Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2018	Apr. 24, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	IEX
Entity Registrant Name	IDEX CORP /DE/
Entity Central Index Key	0000832101
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		76,718,262

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 412,973	$ 375,950
Receivables, less allowance for doubtful accounts of $7,409 at March 31, 2018 and $7,764 at December 31, 2017	328,658	294,166
Inventories	283,876	259,724
Other current assets	43,781	74,203
Total current assets	1,069,288	1,004,043
Property, plant and equipment — net	267,130	258,350
Goodwill	1,722,768	1,704,158
Intangible assets — net	408,188	414,746
Other noncurrent assets	18,085	18,331
Total assets	3,485,459	3,399,628
Current liabilities
Trade accounts payable	157,291	147,067
Accrued expenses	158,156	184,705
Short-term borrowings	835	258
Dividends payable	0	28,945
Total current liabilities	316,282	360,975
Long-term borrowings	859,731	858,788
Deferred income taxes	131,646	137,638
Other noncurrent liabilities	160,915	155,685
Total liabilities	1,468,574	1,513,086
Commitments and contingencies
Preferred stock:
Authorized: 5,000,000 shares, $.01 per share par value; Issued: None	0	0
Common stock:
Authorized: 150,000,000 shares, $.01 per share par value, Issued: 90,124,036 shares at March 31, 2018 and 90,162,211 shares at December 31, 2017	902	902
Additional paid-in capital	722,844	716,906
Retained earnings	2,162,663	2,057,915
Treasury stock at cost: 13,240,743 shares at March 31, 2018 and 13,468,675 shares at December 31, 2017	(803,834)	(799,674)
Accumulated other comprehensive income (loss)	(65,690)	(89,507)
Total shareholders’ equity	2,016,885	1,886,542
Total liabilities and shareholders’ equity	$ 3,485,459	$ 3,399,628

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 7,409	$ 7,764
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock , par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, issued (in shares)	0	0
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued (in shares)	90,124,036	90,162,211
Treasury stock, shares (in shares)	13,240,743	13,468,675

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 612,324	$ 553,552
Cost of sales	335,672	302,611
Gross profit	276,652	250,941
Selling, general and administrative expenses	138,327	130,473
Restructuring expenses	1,642	4,797
Operating income	136,683	115,671
Other (income) expense - net	(4,449)	(308)
Interest expense	11,000	11,552
Income before income taxes	130,132	104,427
Provision for income taxes	31,174	28,528
Net income	$ 98,958	$ 75,899
Basic earnings per common share (in dollars per share)	$ 1.29	$ 0.99
Diluted earnings per common share (in dollars per share)	$ 1.27	$ 0.99
Share data:
Basic weighted average common shares outstanding (in shares)	76,419	76,115
Diluted weighted average common shares outstanding (in shares)	77,739	76,894

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 98,958	$ 75,899
Other comprehensive income (loss):
Reclassification adjustments for derivatives, net of tax	1,261	1,042
Pension and other postretirement adjustments, net of tax	1,413	1,124
Cumulative translation adjustment	27,578	21,050
Other comprehensive income (loss)	30,252	23,216
Comprehensive income	$ 129,210	$ 99,115

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-In Capital	Retained Earnings	Cumulative Translation Adjustment	Retirement Benefits Adjustment	Cumulative Unrealized Gain (Loss) on Derivatives	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adjustment for adoption of ASU \| Accounting Standards Update 2016-16	$ (645)		$ (645)
Adjustment for adoption of ASU \| Accounting Standards Update 2018-02	0		6,435		$ (3,411)	$ (3,024)
Balance, December 31, 2017 at Dec. 31, 2017	1,886,542	$ 717,808	2,057,915	$ (46,306)	(29,154)	(14,047)	$ (799,674)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	98,958		98,958
Cumulative translation adjustment	27,578			27,578
Net change in retirement obligations (net of tax of $505)	1,413				1,413
Net change on derivatives designated as cash flow hedges (net of tax of $371)	1,261					1,261
Issuance of 227,932 shares of common stock from issuance of unvested shares, performance share units and exercise of stock options (net of tax of $2,934)	6,590						6,590
Shares surrendered for tax withholding	(10,750)						(10,750)
Share-based compensation	5,938	5,938
Balance, March 31, 2018 at Mar. 31, 2018	$ 2,016,885	$ 723,746	$ 2,162,663	$ (18,728)	$ (31,152)	$ (15,810)	$ (803,834)

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) shares
Statement of Stockholders' Equity [Abstract]
Pension and other postretirement adjustments, tax	$ 505
Amortization of forward starting swaps, tax	$ 371
Issuance of common stock from performance share units and exercise of stock options (in shares) \| shares	227,932
Issuance of common stock from exercise of stock options and deferred compensation plans, tax amount	$ 2,934

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities
Net income	$ 98,958	$ 75,899
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,183	8,903
Amortization of intangible assets	10,871	11,789
Amortization of debt issuance expenses	332	329
Share-based compensation expense	7,652	6,159
Deferred income taxes	(2,041)	1,293
Non-cash interest expense associated with forward starting swaps	1,632	1,677
Changes in (net of the effect from acquisitions):
Receivables	(30,816)	(20,058)
Inventories	(21,116)	(2,761)
Other current assets	16,881	6,570
Trade accounts payable	8,215	5,188
Accrued expenses	(27,273)	(11,565)
Other — net	(1,749)	1,556
Net cash flows provided by operating activities	71,729	84,979
Cash flows from investing activities
Purchases of property, plant and equipment	(10,009)	(10,162)
Other — net	(184)	546
Net cash flows (used in) investing activities	(10,193)	(9,616)
Cash flows from financing activities
Borrowings under revolving credit facilities	0	13,000
Payments under revolving credit facilities	0	(80,224)
Dividends paid	(28,945)	(26,327)
Proceeds from stock option exercises	6,590	6,074
Purchases of common stock	0	(7,005)
Shares surrendered for tax withholding	(10,750)	(5,647)
Settlement of foreign exchange contracts	6,618	738
Net cash flows (used in) financing activities	(26,487)	(99,391)
Effect of exchange rate changes on cash and cash equivalents	1,974	4,159
Net increase (decrease) in cash	37,023	(19,869)
Cash and cash equivalents at beginning of year	375,950	235,964
Cash and cash equivalents at end of period	412,973	216,095
Cash paid for:
Interest	355	760
Income taxes — net	10,942	5,888
Significant non-cash activities:
Capital expenditures for construction of new leased facility	$ 5,801	$ 0

Basis of Presentation and Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies The Condensed Consolidated Financial Statements of IDEX Corporation (“IDEX,” “we,” “our,” or the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) applicable to interim financial information and the instructions to Form 10-Q under the Securities Exchange Act of 1934, as amended. The statements are unaudited but include all adjustments, consisting only of recurring items, except as noted, that the Company considers necessary for a fair presentation of the information set forth herein. The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results to be expected for the entire year. The Condensed Consolidated Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations set forth in this report should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. Recently Adopted Accounting Standards In February 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which requires an entity to disclose its accounting policy related to releasing income tax effects from accumulated other comprehensive income (loss), whether it has elected to reclassify the stranded tax effects in accumulated other comprehensive income (loss) to retained earnings in the statement of shareholder’s equity and if it has elected to reclassify the stranded tax effects in accumulated other comprehensive income (loss) to retained earnings, what the reclassification encompasses. The Company early adopted this standard on a retrospective basis on January 1, 2018. The adoption resulted in an increase of $6.4 million to Retained earnings and a corresponding change of $6.4 million to Accumulated other comprehensive income (loss) at January 1, 2018. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, which clarifies the definition of a business and assists entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. Under this guidance, when substantially all of the fair value of gross assets acquired is concentrated in a single asset or group of similar assets, the assets acquired would not represent a business. In addition, in order to be considered a business, an acquisition would have to include at a minimum an input and a substantive process that together significantly contribute to the ability to create an output. The amended guidance also narrows the definition of outputs by more closely aligning it with how outputs are described in FASB guidance for revenue recognition. The Company adopted this standard on January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Intra-Entity Transfers of Assets Other Than Inventory, which amends Accounting Standards Codification (“ASC”) 740, Income Taxes. This ASU requires that the income tax consequences of an intra-entity asset transfer other than inventory are recognized at the time of the transfer. An entity will continue to recognize the income tax consequences of an intercompany transfer of inventory when the inventory is sold to a third party. The Company adopted this standard on a modified-retrospective basis on January 1, 2018. The adoption resulted in a decrease of $7.3 million to Other current assets, a decrease of $6.7 million to Deferred income taxes and a decrease of $0.6 million to Retained earnings at January 1, 2018. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force). This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The Company adopted this standard on January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which replaces numerous requirements in U.S. GAAP, including industry-specific requirements, and provides companies with a new five-step model for recognizing revenue from contracts with customers. Under ASU 2014-09, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has also issued the following standards which clarify ASU 2014-09 and have the same effective date as the original standard: ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net); ASU 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing; ASU 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients; and ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. In 2016, we established an implementation team and analyzed the impact of the standard by surveying business units and performing extensive contract reviews to identify potential differences that may result from applying the requirements of the new standard. The contract reviews generally supported the recognition of revenue at a point in time, which is consistent with the current revenue recognition model used by most of our business units. As a result, revenue recognition remains unchanged under the new standard. For our business units that currently recognize revenue under a percentage of completion model, revenue recognition also remains unchanged as the contract reviews supported the recognition of revenue over time. The Company has implemented the appropriate changes to its processes, systems and controls to comply with the new guidance. The Company adopted this standard on January 1, 2018 using the modified retrospective approach applied to contracts that were not completed as of January1, 2018. The adoption of this standard did not have an impact on our condensed consolidated financial statements. The Company elected the following practical expedients: significant financing component, sales tax presentation, contract costs, shipping and handling activities, and disclosures. See Note 4 for further details on revenue. Recently Issued Accounting Standards In February 2016, the FASB issued ASU 2016-02, Leases, which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The standard introduces a new lessee model that will require most leases to be recorded on the balance sheet and eliminates the required use of bright line tests in current U.S. GAAP for determining lease classification. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. This standard is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Companies are permitted to adopt the standard early and a modified retrospective application is permitted. The new guidance requires adoption on a retrospective basis unless it is impracticable to apply, in which case the Company would be required to apply the amendments prospectively as of the earliest date practicable.The Company is currently evaluating the impact of adopting the new guidance on its condensed consolidated financial statements.

Acquisitions and Divestitures	3 Months Ended
Acquisitions and Divestitures	Mar. 31, 2018
Business Combinations and Dispositions [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures All of the Company’s acquisitions have been accounted for under ASC 805, Business Combinations. Accordingly, the accounts of the acquired companies, after adjustments to reflect fair values assigned to assets and liabilities, have been included in the Company’s condensed consolidated financial statements from their respective dates of acquisition. The results of operations of the acquired companies have been included in the Company’s condensed consolidated results since the date of each acquisition. The Company incurred $0.7 million and $0.1 million of acquisition-related transaction costs in the three months ended March 31, 2018 and 2017, respectively. These costs were recorded in Selling, general and administrative expenses and were related to completed transactions, pending transactions and potential transactions, including transactions that ultimately were not completed. 2017 Acquisition On December 8, 2017, the Company acquired the stock of thinXXS Microtechnology AG (“thinXXS”), a leader in the design, manufacture, and sale of microfluidic components serving the point of care, veterinary, and life science markets. The business was acquired to complement our existing CiDRA Precision Services business and expand on our microfluidic and nanofluidic capabilities. Headquartered in Zweibrücken, Germany, thinXXS operates in our Health & Science Technologies segment. thinXXS was acquired for cash consideration of $38.2 million and the assumption of $1.2 million of debt. The purchase price was funded with cash on hand. Goodwill and intangible assets recognized as part of the transaction were $25.0 million and $10.6 million, respectively. The goodwill is not deductible for tax purposes. The Company made an initial allocation of the purchase price for the thinXXS acquisition as of the acquisition date based on its understanding of the fair value of the acquired assets and assumed liabilities. These nonrecurring fair value measurements are classified as Level 3 in the fair value hierarchy. As the Company continues to obtain additional information about these assets and liabilities, and continues to learn more about the newly acquired business, we will refine the estimates of fair value and more accurately allocate the purchase price. Only items identified as of the acquisition date are considered for subsequent adjustment. The Company will make appropriate adjustments to the purchase price allocation prior to the completion of the measurement period, as required. 2017 Divestiture The Company periodically reviews its operations for businesses which may no longer be aligned with its strategic objectives and focuses on core business and customers. Any resulting gain or loss recognized due to divestitures is recorded within Loss (gain) on sale of businesses - net. The Company concluded that the divestiture that took place during the year ended December 31, 2017 did not meet the criteria for reporting discontinued operations. On October 31, 2017, the Company completed the sale of its Faure Herman subsidiary for $21.8 million in cash, resulting in a pre-tax gain on the sale of $9.3 million which was recognized in the fourth quarter of 2017. There was no income tax expense associated with this transaction. The results of Faure Herman were reported within the Fluid & Metering Technologies segment through the date of sale.

Business Segments

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Business Segments

The Company has three reportable business segments: Fluid & Metering Technologies (“FMT”), Health & Science Technologies (“HST”) and Fire & Safety/Diversified Products (“FSDP”).

The Fluid & Metering Technologies segment designs, produces and distributes positive displacement pumps, flow meters, injectors, and other fluid-handling pump modules and systems and provides flow monitoring and other services for the food, chemical, general industrial, water & wastewater, agriculture and energy industries.

The Health & Science Technologies segment designs, produces and distributes a wide range of precision fluidics, rotary lobe pumps, centrifugal and positive displacement pumps, roll compaction and drying systems used in beverage, food processing, pharmaceutical and cosmetics, pneumatic components and sealing solutions, including very high precision, low-flow rate pumping solutions required in analytical instrumentation, clinical diagnostics and drug discovery, high performance molded and extruded sealing components, biocompatible medical devices and implantables, air compressors used in medical, dental and industrial applications, optical components and coatings for applications in the fields of scientific research, defense, biotechnology, aerospace, telecommunications and electronics manufacturing, laboratory and commercial equipment used in the production of micro and nano scale materials, precision photonic solutions used in life sciences, research and defense markets, and precision gear and peristaltic pump technologies that meet exacting original equipment manufacturer specifications.

The Fire & Safety/Diversified Products segment designs, produces and distributes firefighting pumps, valves and controls, rescue tools, lifting bags and other components and systems for the fire and rescue industry, engineered stainless steel banding and clamping devices used in a variety of industrial and commercial applications, and precision equipment for dispensing, metering and mixing colorants and paints used in a variety of retail and commercial businesses around the world.

Information on the Company’s business segments is presented below based on the nature of products and services offered. The Company evaluates performance based on several factors, of which sales, operating income, and operating margin are the primary financial measures. Intersegment sales are accounted for at fair value as if the sales were to third parties.



	Three Months Ended March 31,
	2018			2017
Net sales
Fluid & Metering Technologies
External customers	$	232,261		$	216,655
Intersegment sales	72			115
Total segment sales	232,333			216,770
Health & Science Technologies
External customers	220,967			199,575
Intersegment sales	108			104
Total segment sales	221,075			199,679
Fire & Safety/Diversified Products
External customers	159,096			137,322
Intersegment sales	77			125
Total segment sales	159,173			137,447
Intersegment elimination	(257		)	(344		)
Total net sales	$	612,324		$	553,552
Operating income
Fluid & Metering Technologies	$	66,166		$	57,813
Health & Science Technologies	51,806			42,238
Fire & Safety/Diversified Products	39,554			32,626
Corporate office	(20,843		)	(17,006		)
Total operating income	136,683			115,671
Interest expense	11,000			11,552
Other (income) expense - net	(4,449		)	(308		)
Income before income taxes	$	130,132		$	104,427



	March 31, 2018		December 31, 2017
Assets
Fluid & Metering Technologies	$	1,138,501	$	1,101,580
Health & Science Technologies	1,339,090		1,323,373
Fire & Safety/Diversified Products	771,702		744,515
Corporate office	236,166		230,160
Total assets	$	3,485,459	$	3,399,628

Revenue

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue

IDEX is an applied solutions company specializing in the manufacture of fluid and metering technologies, health and science technologies, and fire, safety and other diversified products built to customers’ specifications. The Company’s products include industrial pumps, compressors, flow meters, injectors and valves, and related controls for use in a wide variety of process applications; precision fluidics solutions, including pumps, valves, degassing equipment, corrective tubing, fittings, and complex manifolds, optical filters and specialty medical equipment and devices for use in life science applications; precision-engineered equipment for dispensing, metering and mixing paints; and engineered products for industrial and commercial markets, including fire and rescue, transportation equipment, oil & gas, electronics and communications. The Company’s revenue is accounted for under ASC 606, Revenue from Contracts with Customers, which we adopted on January 1, 2018 using the modified retrospective method.

Revenue is recognized when control of the promised products or services is transferred to our customers in an amount that reflect the consideration we expect to be entitled to in exchange for transferring those products or providing those services. We account for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. We determine the appropriate revenue recognition for our contracts with customers by analyzing the type, terms and conditions of each contract or arrangement with a customer.

Disaggregation of Revenue

We have a comprehensive offering of products, including technologies, built to customers’ specifications that are sold in niche markets throughout the world. We disaggregate our revenue from contracts with customers by reporting unit and geographical region for each of our segments as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Geographical region is based on the location of the customer. The following tables present our revenue disaggregated by reporting unit and geographical region.

Revenue by reporting unit was as follows:



	Three Months Ended March 31, 2018
Energy	$	38,759
Valves	26,029
Water	58,840
Pumps	80,666
Agriculture	28,039
Intersegment elimination	(72		)
Fluid & Metering Technologies	232,261
Scientific Fluidics & Optics	99,507
Sealing Solutions	53,702
Gast	28,512
Micropump	9,298
Material Processing Technologies	30,056
Intersegment elimination	(108		)
Health & Science Technologies	220,967
Fire & Safety	96,212
Band-It	27,474
Dispensing	35,487
Intersegment elimination	(77		)
Fire & Safety/Diversified Products	159,096
Total net sales	$	612,324

Revenue by geographical region was as follows:



	Three Months Ended March 31, 2018
	FMT			HST			FSDP			IDEX
U.S.	$	133,153		$	93,808		$	72,497		$	299,458
Europe	43,599			73,779			47,119			164,497
Asia	26,398			44,548			24,233			95,179
Rest of world ⁽¹⁾	29,183			8,940			15,324			53,447
Intersegment elimination	(72		)	(108		)	(77		)	(257		)
Total net sales	$	232,261		$	220,967		$	159,096		$	612,324

⁽¹⁾ Rest of world includes: North America excluding U.S., South America, Middle East, Australia and Africa.

Contract Balances

The timing of revenue recognition, billings and cash collections results in customer receivables, advance payments and billings in excess of revenue recognized. Customer receivables include amounts billed and currently due from customers as well as unbilled amounts (contract assets) and are included in Receivables on our Condensed Consolidated Balance Sheets. Amounts are billed in accordance with contractual terms or as work progresses in accordance with contractual terms. Unbilled amounts arise when the timing of billing differs from the timing of revenue recognized, such as when contract provisions require specific milestones to be met before a customer can be billed. Unbilled amounts primarily relate to performance obligations satisfied over time when the cost-to-cost method is utilized and the revenue recognized exceeds the amount billed to the customer as there is not yet a right to payment in accordance with contractual terms. Unbilled amounts are recorded as a contract asset when the revenue associated with the contract is recognized prior to billing and derecognized when billed in accordance with the terms of the contract. Customer receivables are recorded at face amounts less an allowance for doubtful accounts. The Company maintains allowances for doubtful accounts for estimated losses as a result of customers’ inability to make required payments. Management evaluates the aging of the customer receivable balances, the financial condition of its customers, historical trends and the time outstanding of specific balances to estimate the amount of customer receivables that may not be collected in the future and records the appropriate provision.

The composition of Customer receivables was as follows:



	March 31, 2018		January 1, 2018
Billed receivables	$	318,305	$	285,800
Unbilled receivables	13,296		11,996
Total customer receivables	$	331,601	$	297,796

Advance payments and billings in excess of revenue recognized are included in Deferred revenue which is classified as current or noncurrent based on the timing of when we expect to recognize revenue. The current portion is included in Accrued expenses and the noncurrent portion is included in Other noncurrent liabilities on our Condensed Consolidated Balance Sheets. Advance payments and billings in excess of revenue recognized represent contract liabilities and are recorded when customers remit contractual cash payments in advance of us satisfying performance obligations under contractual arrangements, including those with performance obligations satisfied over time. Billings in excess of revenue recognized primarily relate to performance obligations satisfied over time when the cost-to-cost method is utilized and revenue cannot yet be recognized as the Company has not completed the corresponding performance obligation. We generally receive advance payments from customers related to maintenance services which we recognize ratably over the service term. Contract liabilities are derecognized when revenue is recognized and the performance obligation is satisfied.

The composition of Deferred revenue was as follows:



	March 31, 2018		January 1, 2018
Deferred revenue - current	$	12,586	$	11,031
Deferred revenue - noncurrent	3,489		3,297
Total deferred revenue	$	16,075	$	14,328

Performance Obligations

A performance obligation is a promise in a contract to transfer a distinct product or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. For our contracts that require complex design, manufacturing and installation activities that are not separately identifiable from other promises in the contract and, therefore, not distinct, the entire contract is accounted for as a single performance obligation. For our contracts that include distinct products or services that are substantially the same and have the same pattern of transfer to the customer over time, they are recognized as a series of distinct products or services. Certain of our contracts have multiple performance obligations for which we allocate the transaction price to each performance obligation using an estimate of the standalone selling price of each distinct product or service in the contract. For product sales, each product sold to a customer generally represents a distinct performance obligation. In such cases, the observable standalone sales are used to determine the standalone selling price. In certain cases, we may be required to estimate standalone selling price using the expected cost plus margin approach, under which we forecast our expected costs of satisfying a performance obligation and then add an appropriate margin for that distinct product or service.

Our performance obligations are satisfied at a point in time or over time as work progresses. Performance obligations are supported by contracts with customers that provide a framework for the nature of the distinct products, services or bundle of products and services. We define service revenue as revenue from activities that are not associated with the design, development or manufacture of a product or the delivery of a software license.

Revenue from products and services transferred to customers at a point in time represented 95% of our revenue in the first three months of 2018. The revenue recognized at a point in time relates to the sale of the majority of our products. Revenue on these contracts is recognized when obligations under the terms of the contract with our customer are satisfied. Generally, this occurs with the transfer of control of the asset, which is in line with shipping terms.

Revenue from products and services transferred to customers over time represented 5% of our revenue in the first three months of 2018. Revenue earned by certain business units within the Water, Energy, Material Processing Technologies (“MPT”) and Dispensing reporting units is recognized over time because control transfers continuously to our customers. When accounting for over-time contracts, we use an input measure to determine the extent of progress towards completion of the performance obligation. For certain business units within the Water, Energy and MPT reporting units, revenue is recognized over time as work is performed based on the relationship between actual costs incurred to date for each contract and the total estimated costs for such contract at completion of the performance obligation (i.e. the cost-to-cost method). We believe this measure of progress best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Incurred cost represents work performed, which corresponds with the transfer of control to the customer. Contract costs include labor, material and overhead. Contract estimates are based on various assumptions to project the outcome of future events. These assumptions include labor productivity and availability; the complexity of the work to be performed; the cost and availability of materials; the performance of subcontractors; and the availability and timing of funding from the customer. Revenues, including estimated fees or profits, are recorded proportionally as costs are incurred. For certain business units within the Energy and Dispensing reporting units, revenue is recognized ratably over the contract term.

As a significant change in one or more of these estimates could affect the profitability of our contracts, we review and update our estimates regularly. Due to uncertainties inherent in the estimation process, it is reasonably possible that completion costs, including those arising from contract penalty provisions and final contract settlements, will be revised. Such revisions to costs and income are recognized in the period in which the revisions are determined as a cumulative catch-up adjustment. The impact of the adjustment on profit recorded to date on a contract is recognized in the period the adjustment is identified. Revenue and profit in future periods of contract performance are recognized using the adjusted estimate. If at any time the estimate of contract profitability indicates an anticipated loss on the contract, we recognize provisions for estimated losses on uncompleted contracts in the period in which such losses are determined.

The Company records allowances for discounts, product returns and customer incentives at the time of sale as a reduction of revenue as such allowances can be reliably estimated based on historical experience and known trends. The Company also offers product warranties (primarily assurance-type) and accrues its estimated exposure for warranty claims at the time of sale based upon the length of the warranty period, warranty costs incurred and any other related information known to the Company.

Earnings Per Common Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Common Share

Earnings per common share (“EPS”) is computed by dividing net income by the weighted average number of shares of common stock (basic) plus common stock equivalents outstanding (diluted) during the period. Common stock equivalents consist of stock options, which have been included in the calculation of weighted average shares outstanding using the treasury stock method, restricted stock and performance share units.

ASC 260, Earnings Per Share, concludes that all outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends participate in undistributed earnings with common shareholders. If awards are considered participating securities, the Company is required to apply the two-class method of computing basic and diluted earnings per share. The Company has determined that its outstanding shares of restricted stock are participating securities. Accordingly, EPS was computed using the two-class method prescribed by ASC 260.

Basic weighted average shares outstanding reconciles to diluted weighted average shares outstanding as follows:



	Three Months Ended March 31,
	2018	2017
Basic weighted average common shares outstanding	76,419	76,115
Dilutive effect of stock options, restricted stock and performance share units	1,320	779
Diluted weighted average common shares outstanding	77,739	76,894

Options to purchase approximately 0.3 million and 0.3 million shares of common stock for the three months ended March 31, 2018 and 2017, respectively, were not included in the computation of diluted EPS because the effect of their inclusion would have been antidilutive.

Inventories

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

The components of inventories as of March 31, 2018 and December 31, 2017 were:



	March 31, 2018		December 31, 2017
Raw materials and component parts	$	180,440	$	169,676
Work in process	37,149		33,668
Finished goods	66,287		56,380
Total inventories	$	283,876	$	259,724

Inventories are stated at the lower of cost or net realizable value. Cost, which includes material, labor and factory overhead, is determined on a FIFO basis.

Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

The changes in the carrying amount of goodwill for the three months ended March 31, 2018, by reportable business segment, were as follows:



	FMT		HST		FSDP		IDEX
Balance at December 31, 2017	$	586,064	$	740,032	$	378,062	$	1,704,158
Foreign currency translation	3,661		8,879		4,953		17,493
Acquisition adjustments	—		1,117		—		1,117
Balance at March 31, 2018	$	589,725	$	750,028	$	383,015	$	1,722,768

ASC 350, Goodwill and Other Intangible Assets, requires that goodwill be tested for impairment at the reporting unit level on an annual basis and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of the reporting unit below its carrying value. In the first three months of 2018, there were no events or circumstances that would have required an interim impairment test. Annually, on October 31, goodwill and other acquired intangible assets with indefinite lives are tested for impairment. Based on the results of our annual impairment test at October 31, 2017, all reporting units had fair values in excess of their carrying values.

The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at March 31, 2018 and December 31, 2017:



	At March 31, 2018								At December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Amortized intangible assets:
Patents	$	9,644	$	(7,355	)	$	2,289	11	$	9,633	$	(7,143	)	$	2,490
Trade names	118,575		(52,945		)	65,630		16	117,206		(50,604		)	66,602
Customer relationships	308,857		(120,749		)	188,108		13	317,316		(124,566		)	192,750
Unpatented technology	92,759		(31,743		)	61,016		13	91,166		(29,428		)	61,738
Other	700		(455		)	245		10	839		(573		)	266
Total amortized intangible assets	530,535		(213,247		)	317,288			536,160		(212,314		)	323,846
Indefinite-lived intangible assets:
Banjo trade name	62,100		—			62,100			62,100		—			62,100
Akron Brass trade name	28,800		—			28,800			28,800		—			28,800
Total intangible assets	$	621,435	$	(213,247	)	$	408,188		$	627,060	$	(212,314	)	$	414,746

The Banjo trade name and the Akron Brass trade name are indefinite-lived intangible assets which are tested for impairment on an annual basis in accordance with ASC 350 or more frequently if events or changes in circumstances indicate that the assets might be impaired. In the first three months of 2018, there were no events or circumstances that would have required an interim impairment test. The Company uses the relief-from-royalty method, a form of the income approach, to determine the fair value of these trade names. The relief-from-royalty method is dependent on a number of significant management assumptions, including estimates of revenues, royalty rates and discount rates.

Amortization of intangible assets was $10.9 million and $11.8 million for the three months ended March 31, 2018 and 2017, respectively. Based on the intangible asset balances as of March 31, 2018, amortization expense is expected to approximate $28.1 million for the remaining nine months of 2018, $35.8 million in 2019, $35.0 million in 2020, $33.7 million in 2021 and $32.0 million in 2022.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Borrowings

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Borrowings

Borrowings at March 31, 2018 and December 31, 2017 consisted of the following:



	March 31, 2018		December 31, 2017
Revolving Facility	$	11,079	$	10,740
4.5% Senior Notes, due December 2020	300,000		300,000
4.2% Senior Notes, due December 2021	350,000		350,000
3.2% Senior Notes, due June 2023	100,000		100,000
3.37% Senior Notes, due June 2025	100,000		100,000
Other borrowings	2,409		1,446
Total borrowings	863,488		862,186
Less current portion	835		258
Less deferred debt issuance costs	2,052		2,204
Less unaccreted debt discount	870		936
Total long-term borrowings	$	859,731	$	858,788

On June 13, 2016, the Company completed a private placement of $100 million aggregate principal amount of 3.20% Senior Notes due June 13, 2023 and $100 million aggregate principal amount of 3.37% Senior Notes due June 13, 2025 (collectively, the “Notes”) pursuant to a Note Purchase Agreement dated June 13, 2016 (the “Purchase Agreement”). Each series of Notes bears interest at the stated amount per annum, which is payable semi-annually in arrears on each June 13^th and December 13^th. The Notes are unsecured obligations of the Company and rank pari passu in right of payment with all of the Company’s other unsecured, unsubordinated debt. The Company may at any time prepay all, or any portion of the Notes provided that such portion is greater than 5% of the aggregate principal amount of Notes then outstanding. In the event of a prepayment, the Company will pay an amount equal to par plus accrued interest plus a make-whole amount. In addition, the Company may repurchase the Notes by making an offer to all holders of the Notes, subject to certain conditions.

The Purchase Agreement contains certain covenants that restrict the Company’s ability to, among other things, transfer or sell assets, incur indebtedness, create liens, transact with affiliates and engage in certain mergers or consolidations or other change of control transactions. In addition, the Company must comply with a leverage ratio and interest coverage ratio, as further described below, and the Purchase Agreement also limits the outstanding principal amount of priority debt that may be incurred by the Company to 15% of consolidated assets. The Purchase Agreement provides for customary events of default. In the case of an event of default arising from specified events of bankruptcy or insolvency, all of the outstanding Notes will become due and payable immediately without further action or notice. In the case of payment event of default, any holder of the Notes affected thereby may declare all the Notes held by it due and payable immediately. In the case of any other event of default, a majority of the holders of the Notes may declare all of the Notes to be due and payable immediately.

On June 23, 2015, the Company entered into a credit agreement (the “Credit Agreement”) along with certain of its subsidiaries, as borrowers (the “Borrowers”), Bank of America, N.A., as administrative agent, swing line lender and an issuer of letters of credit, with other agents party thereto. The Credit Agreement replaced the Company’s existing five-year, $700 million credit agreement dated as of June 27, 2011, which was due to expire on June 27, 2016.

The Credit Agreement consists of a revolving credit facility (the “Revolving Facility”) in an aggregate principal amount of $700 million, with a final maturity date of June 23, 2020. The maturity date may be extended under certain conditions for an additional one-year term. Up to $75 million of the Revolving Facility is available for the issuance of letters of credit. Additionally, up to $50 million of the Revolving Facility is available to the Company for swing line loans, available on a same-day basis.

Proceeds of the Revolving Facility are available for use by the Borrowers for acquisitions, working capital and other general corporate purposes, including refinancing existing debt of the Company and its subsidiaries. The Company may request increases in the lending commitments under the Credit Agreement, but the aggregate lending commitments pursuant to such increases may not exceed $350 million. The Company has the right, subject to certain conditions set forth in the Credit Agreement, to designate certain foreign subsidiaries of the Company as borrowers under the Credit Agreement. In connection with any such designation,

the Company is required to guarantee the obligations of any such subsidiaries.

Borrowings under the Credit Agreement bear interest at either an alternate base rate or an adjusted LIBOR rate plus, in each case, an applicable margin. Such applicable margin is based on the Company’s senior, unsecured long-term debt rating and can range from .005% to 1.50%. Based on the Company’s credit rating at March 31, 2018, the applicable margin was 1.10%. Given the fact that LIBOR was negative at March 31, 2018, the default interest rate is equal to the applicable margin, resulting in a weighted average interest rate of 1.12% at March 31, 2018. Interest is payable (a) in the case of base rate loans, quarterly, and (b) in the case of LIBOR rate loans, on the maturity date of the borrowing or quarterly from the effective date for borrowings exceeding three months.

The Credit Agreement requires payment to the lenders of a facility fee based upon (a) the amount of the lenders’ commitments under the credit facility from time to time and (b) the applicable corporate credit ratings of the Company. Voluntary prepayments of any loans and voluntary reductions of the unutilized portion of the commitments under the credit facility are permissible without penalty, subject to break funding payments and minimum notice and minimum reduction amount requirements.

The negative covenants include, among other things, limitations (each of which is subject to customary exceptions for financings of this type) on our ability to grant liens; enter into transactions resulting in fundamental changes (such as mergers or sales of all or substantially all of the assets of the Company); restrict subsidiary dividends or other subsidiary distributions; enter into transactions with the Company’s affiliates; and incur certain additional subsidiary debt.

The Credit Agreement also contains customary events of default (subject to grace periods, as appropriate) including among others: nonpayment of principal, interest or fees; breach of the representations or warranties in any material respect; breach of the financial, affirmative or negative covenants; payment default on, or acceleration of, other material indebtedness; bankruptcy or insolvency; material judgments entered against the Company or any of its subsidiaries; certain specified events under the Employee Retirement Income Security Act of 1974, as amended; certain changes in control of the Company; and the invalidity or unenforceability of the Credit Agreement or other documents associated with the Credit Agreement.

At March 31, 2018, $11.1 million was outstanding under the Revolving Facility, with $8.0 million of outstanding letters of credit, resulting in net available borrowing capacity under the Revolving Facility at March 31, 2018 of approximately $680.9 million.

There are two key financial covenants that the Company is required to maintain in connection with the Revolving Facility and the Notes, a minimum interest coverage ratio of 3.0 to 1 and a maximum leverage ratio of 3.50 to 1, which is the ratio of the Company’s consolidated total debt to its consolidated EBITDA. At March 31, 2018, the Company was in compliance with both of these financial covenants. There are no financial covenants relating to the 4.5% Senior Notes or 4.2% Senior Notes; however, both are subject to cross-default provisions.

Derivative Instruments

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

The Company enters into cash flow hedges from time to time to reduce the exposure to variability in certain expected future cash flows. The types of cash flow hedges the Company enters into include foreign currency exchange contracts designed to minimize the earnings impact on certain intercompany loans and interest rate exchange agreements that effectively convert a portion of floating-rate debt to fixed-rate debt and are designed to reduce the impact of interest rate changes on future interest expense.

The effective portion of gains or losses on interest rate exchange agreements is reported in accumulated other comprehensive income (loss) in shareholders’ equity and reclassified into net income in the same period or periods in which the hedged transaction affects net income. The remaining gain or loss in excess of the cumulative change in the present value of future cash flows or the hedged item, if any, is recognized into net income during the period of change. See Note 14 for the amount of loss reclassified into income for interest rate contracts for the three months ended March 31, 2018 and 2017. As of March 31, 2018, the Company did not have any interest rate contracts outstanding.

In 2010 and 2011, the Company entered into two separate forward starting interest rate exchange agreements in anticipation of the issuance of the 4.2% Senior Notes and the 4.5% Senior Notes. The Company cash settled these two interest rate contracts in 2010 and 2011 for a total of $68.9 million, which is being amortized into interest expense over the 10 year term of the debt instruments. Approximately $6.4 million of the pre-tax amount included in accumulated other comprehensive income (loss) in shareholders’ equity at March 31, 2018 will be recognized in net income over the next 12 months as the underlying hedged transactions are realized.

At March 31, 2018, the Company had outstanding foreign currency exchange contracts with a combined notional value of €180 million that have not been designated as hedges for accounting purposes. These contracts are used to minimize the economic impact and reduce the variability on earnings due to foreign currency fluctuations between the Swiss Franc and the Euro associated with certain intercompany loans that were established in conjunction with the SFC Koenig acquisition. The change in the fair value of the foreign currency exchange contracts and the corresponding foreign currency gain or loss on the revaluation of the intercompany loans are both recorded through earnings each period as incurred within Other (income) expense - net in the Condensed Consolidated Statements of Operations.

During the three months ended March 31, 2018 and 2017, the Company recorded gains of $1.2 million and $0.4 million, respectively, within Other (income) expense - net related to these foreign currency exchange contracts. During the three months ended March 31, 2018 and 2017, the Company recorded a foreign currency transaction loss of $1.2 million and $0.4 million, respectively, within Other (income) expense - net related to these intercompany loans.

The foreign currency exchange contracts are settled in cash approximately every 90 days, with the proceeds recorded within Financing Activities on the Condensed Consolidated Statements of Cash Flows. For the three months ended March 31, 2018, the Company received $6.6 million in settlement of the foreign currency exchange contracts. The Company repaid the underlying intercompany loans in April 2018 and thus did not extend the foreign currency exchange contracts when they expired.

Fair values relating to derivative financial instruments reflect the estimated amounts that the Company would receive or pay to sell or buy the contracts based on quoted market prices of comparable contracts at each balance sheet date.

The following table sets forth the fair value amounts of derivative instruments held by the Company as of March 31, 2018 and December 31, 2017:



	Fair Value Assets
	March 31, 2018		December 31, 2017		Balance Sheet Caption
Foreign currency exchange contracts	$	362	$	5,779	Other current assets

Fair Value Measurements

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

ASC 820, Fair Value Measurements and Disclosures, defines fair value, provides guidance for measuring fair value and requires certain disclosures. This standard discusses valuation techniques, such as the market approach (comparable market prices), the income approach (present value of future income or cash flow), and the cost approach (cost to replace the service capacity of an asset or replacement cost). The standard utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels:


•	Level 1: Observable inputs such as quoted prices (unadjusted) in active markets for identical assets or liabilities.


•	Level 2: Inputs, other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.


•	Level 3: Unobservable inputs that reflect the reporting entity’s own assumptions.

The following table summarizes the basis used to measure the Company’s financial assets at fair value on a recurring basis in the balance sheets at March 31, 2018 and December 31, 2017:



	Basis of Fair Value Measurements
	Balance at March 31, 2018		Level 1		Level 2		Level 3
Available for sale securities	$	6,771	$	6,771	$	—	$	—
Foreign currency exchange contracts	362		—		362		—



	Basis of Fair Value Measurements
	Balance at December 31, 2017		Level 1		Level 2		Level 3
Available for sale securities	$	6,742	$	6,742	$	—	$	—
Foreign currency exchange contracts	5,779		—		5,779		—

There were no transfers of assets or liabilities between Level 1 and Level 2 during the three months ended March 31, 2018 or the year ended December 31, 2017.

The carrying values of our cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximates their fair values because of the short term nature of these instruments. At March 31, 2018, the fair value of the outstanding indebtedness under our Revolving Facility, 3.2% Senior Notes, 3.37% Senior Notes, 4.5% Senior Notes and 4.2% Senior Notes, based on quoted market prices and current market rates for debt with similar credit risk and maturity, was approximately $874.2 million compared to the carrying value of $860.6 million. This fair value measurement is classified as Level 2 within the fair value hierarchy since it is determined based upon significant inputs observable in the market, including interest rates on recent financing transactions to entities with a credit rating similar to ours.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Restructuring

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Restructuring

During the first quarter of 2018, the Company recorded restructuring costs of $1.6 million as part of restructuring initiatives that support the implementation of key strategic efforts designed to facilitate long-term, sustainable growth through cost reduction actions, primarily consisting of employee reductions and facility rationalization. The restructuring costs included severance benefits and exit costs. The costs incurred related to these initiatives were included in Restructuring expenses in the Condensed Consolidated Statements of Operations while the related accruals were included in Accrued expenses in the Condensed Consolidated Balance Sheets. Severance costs primarily consisted of severance benefits through payroll continuation, COBRA subsidies, outplacement services, conditional separation costs and employer tax liabilities, while exit costs primarily consisted of asset disposals or impairments and lease exit and contract termination costs.

Pre-tax restructuring expenses by segment for the three months ended March 31, 2018 are as follows:



	Severance Costs		Exit Costs		Total
Fluid & Metering Technologies	$	143	$	—	$	143
Health & Science Technologies	967		92		1,059
Fire & Safety/Diversified Products	100		—		100
Corporate/Other	340		—		340
Total restructuring costs	$	1,550	$	92	$	1,642

Restructuring accruals of $3.4 million and $4.2 million at March 31, 2018 and December 31, 2017, respectively, are recorded in Accrued expenses in the Condensed Consolidated Balance Sheets. Severance benefits are expected to be paid by the end of the year using cash from operations. The changes in the restructuring accrual for the three months ended March 31, 2018 are as follows:



	Restructuring
Balance at January 1, 2018	$	4,180
Restructuring expenses	1,642
Payments, utilization and other	(2,407		)
Balance at March 31, 2018	$	3,415

Other Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Other Comprehensive Income (Loss)

The components of other comprehensive income (loss) are as follows:



	Three Months Ended March 31, 2018							Three Months Ended March 31, 2017
	Pre-tax		Tax			Net of tax		Pre-tax		Tax			Net of tax
Cumulative translation adjustment	$	27,578	$	—		$	27,578	$	21,050	$	—		$	21,050
Pension and other postretirement adjustments	1,918		(505		)	1,413		1,676		(552		)	1,124
Reclassification adjustments for derivatives	1,632		(371		)	1,261		1,677		(635		)	1,042
Total other comprehensive income (loss)	$	31,128	$	(876	)	$	30,252	$	24,403	$	(1,187	)	$	23,216

The following table summarizes the amounts reclassified from accumulated other comprehensive income (loss) to net income during the three months ended March 31, 2018 and 2017:



	Three Months Ended March 31,
	2018			2017
Pension and other postretirement plans:
Amortization of service cost	$	1,918		$	1,676
Total before tax	1,918			1,676
Provision for income taxes	(505		)	(552		)
Total net of tax	$	1,413		$	1,124
Derivatives:
Reclassification adjustments	$	1,632		$	1,677
Total before tax	1,632			1,677
Provision for income taxes	(371		)	(635		)
Total net of tax	$	1,261		$	1,042

The Company recognizes the service cost component in both Selling, general and administrative expenses and Cost of sales in the Condensed Consolidated Statements of Operations, depending on the functional area of the underlying employees included in the plans.

Common and Preferred Stock	3 Months Ended
Common and Preferred Stock	Mar. 31, 2018
Equity [Abstract]
Common and Preferred Stock	Common and Preferred Stock On December 1, 2015, the Company’s Board of Directors approved a $300.0 million increase in the authorized level for repurchases of common stock. Repurchases under the program will be funded with future cash flow generation or borrowings available under the Revolving Facility. During the three months ended March 31, 2017, the Company repurchased a total of 82 thousand shares at a cost of $7.6 million, of which $0.6 million was settled in April 2017. The Company did not repurchase any shares during the three months ended March 31, 2018. As of March 31, 2018, the amount of share repurchase authorization remaining was $550.9 million. At March 31, 2018 and December 31, 2017, the Company had 150 million shares of authorized common stock, with a par value of $.01 per share, and 5 million shares of authorized preferred stock, with a par value of $.01 per share. No preferred stock was outstanding at March 31, 2018 or December 31, 2017.

Share-Based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Stock Options

Weighted average option fair values and assumptions for the periods specified are disclosed below. The fair value of each option grant was estimated on the date of the grant using the Binomial lattice option pricing model.




	Three Months Ended March 31,
	2018	2017
Weighted average fair value of grants	$37.96	$24.11
Dividend yield	1.07%	1.45%
Volatility	28.49%	29.41%
Risk-free interest rate	2.01% - 3.17%	0.82% - 3.04%
Expected life (in years)	5.78	5.83

Total compensation cost for stock options is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	206		$	186
Selling, general and administrative expenses	2,524			2,284
Total expense before income taxes	2,730			2,470
Income tax benefit	(470		)	(747		)
Total expense after income taxes	$	2,260		$	1,723

A summary of the Company’s stock option activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Stock Options	Shares		Weighted Average Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 1, 2018	1,924,683		$	71.07	6.87	$	117,209,218
Granted	300,495		138.12
Exercised	(104,754	)	62.91
Forfeited	(16,746	)	90.72
Outstanding at March 31, 2018	2,103,678		$	80.90	7.12	$	129,612,247
Vested and expected to vest as of March 31, 2018	1,967,982		$	79.10	6.99	$	124,784,752
Exercisable at March 31, 2018	1,149,993		$	63.95	5.77	$	90,343,139

Restricted Stock

Restricted stock awards generally cliff vest after three years for employees and non-employee directors. Unvested restricted stock carries dividend and voting rights and the sale of the shares is restricted prior to the date of vesting. A summary of the Company’s restricted stock activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented as follows:



Restricted Stock	Shares		Weighted-Average Grant Date Fair Value
Unvested at January 1, 2018	182,023		$	83.37
Granted	28,555		138.06
Vested	(52,650	)	78.82
Forfeited	(3,250	)	84.78
Unvested at March 31, 2018	154,678		$	94.98

Dividends are paid on restricted stock awards whose fair value is equal to the market price of the Company’s stock at the date of the grant.

Total compensation cost for restricted shares is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	156		$	152
Selling, general and administrative expenses	1,289			1,253
Total expense before income taxes	1,445			1,405
Income tax benefit	(257		)	(439		)
Total expense after income taxes	$	1,188		$	966

Cash-Settled Restricted Stock

The Company also maintains a cash-settled share based compensation plan for certain employees. Cash-settled restricted stock awards generally cliff vest after three years. A summary of the Company’s unvested cash-settled restricted stock activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Cash-Settled Restricted Stock	Shares		Weighted-Average Fair Value
Unvested at January 1, 2018	94,730		$	131.97
Granted	25,880		138.12
Vested	(24,935	)	136.83
Forfeited	(1,310	)	142.51
Unvested at March 31, 2018	94,365		$	142.51

Dividend equivalents are paid on certain cash-settled restricted stock awards. Total compensation cost for cash-settled restricted stock is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	413		$	248
Selling, general and administrative expenses	1,204			430
Total expense before income taxes	1,617			678
Income tax benefit	(159		)	(142		)
Total expense after income taxes	$	1,458		$	536

Performance Share Units

Weighted average performance share unit fair values and assumptions for the period specified are disclosed below. The performance share units are market condition awards and have been assessed at fair value on the date of grant using a Monte Carlo simulation model.



	Three Months Ended March 31,
	2018	2017
Weighted average fair value of grants	$216.59	$115.74
Dividend yield	—%	—%
Volatility	17.42%	17.36%
Risk-free interest rate	2.40%	1.45%
Expected life (in years)	2.85	2.85

A summary of the Company’s performance share unit activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Performance Share Units	Shares		Weighted-Average Grant Date Fair Value
Unvested at January 1, 2018	136,870		$	113.81
Granted	52,375		216.59
Vested	—		—
Forfeited	(2,385	)	134.85
Unvested at March 31, 2018	186,860		$	142.57

On December 31, 2017, 62,755 performance share units vested. Based on the Company’s relative total shareholder return rank during the three year period ended December 31, 2017, the Company achieved a 239% payout factor and issued 143,897 shares in February 2018.

Total compensation cost for performance share units is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	—		$	—
Selling, general and administrative expenses	1,860			1,606
Total expense before income taxes	1,860			1,606
Income tax benefit	(317		)	(507		)
Total expense after income taxes	$	1,543		$	1,099

The Company’s policy is to recognize compensation cost on a straight-line basis, assuming forfeitures, over the requisite service period for the entire award. Classification of stock compensation cost within the Condensed Consolidated Statements of Operations is consistent with classification of cash compensation for the same employees.

As of March 31, 2018, there was $19.0 million of total unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 1.6 years, $6.5 million of total unrecognized compensation cost related to restricted stock that is expected to be recognized over a weighted-average period of 1.2 years, $5.9 million of total unrecognized compensation cost related to cash-settled restricted shares that is expected to be recognized over a weighted-average period of 1.2 years, and $13.7 million of total unrecognized compensation cost related to performance share units that is expected to be recognized over a weighted-average period of 1.2 years.

Retirement Benefits

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Retirement Benefits

The Company sponsors several qualified and nonqualified defined benefit and defined contribution pension plans and other postretirement plans for its employees. The following tables provide the components of net periodic benefit cost for its major defined benefit plans and its other postretirement plans.



	Pension Benefits
	Three Months Ended March 31,
	2018						2017
	U.S.			Non-U.S.			U.S.			Non-U.S.
Service cost	$	254		$	545		$	254		$	482
Interest cost	653			361			660			308
Expected return on plan assets	(983		)	(290		)	(944		)	(264		)
Net amortization	685			330			642			382
Net periodic benefit cost	$	609		$	946		$	612		$	908



	Other Postretirement Benefits
	Three Months Ended March 31,
	2018			2017
Service cost	$	168		$	152
Interest cost	203			204
Net amortization	(184		)	(198		)
Net periodic benefit cost	$	187		$	158

The Company previously disclosed in its financial statements for the year ended December 31, 2017, that it expected to contribute approximately $5.5 million to its defined benefit plans and $0.1 million to its other postretirement benefit plans in 2018. During the first three months of 2018, the Company contributed a total of $0.7 million to fund these plans and expects to contribute an additional $5.0 million to $20.0 million in the remaining nine months of 2018.

Legal Proceedings	3 Months Ended
Legal Proceedings	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Legal Proceedings The Company and certain of its subsidiaries are involved in pending and threatened legal, regulatory and other proceedings arising in the ordinary course of business. These proceedings may pertain to matters such as product liability or contract disputes, and may also involve governmental inquiries, inspections, audits or investigations relating to issues such as tax matters, intellectual property, environmental, health and safety issues, governmental regulations, employment and other matters. Although the results of such legal proceedings cannot be predicted with certainty, the Company believes that the ultimate disposition of these matters will not have a material adverse effect, individually or in the aggregate, on the Company’s business, financial condition, results of operations or cash flows.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s provision for income taxes is based upon estimated annual tax rates for the year applied to federal, state and foreign income. The provision for income taxes increased to $31.2 million in the three months ended March 31, 2018 from $28.5 million in the same period of 2017. The effective tax rate decreased to 24.0% for the three months ended March 31, 2018 compared to 27.3% in the same period of 2017 due to the enactment of the Tax Cuts and Jobs Act (the “Tax Act”) as well as excess tax benefits related to share-based compensation, partially offset by the new Global Intangible Low-Taxed Income (“GILTI”) provision, discrete income tax expense due to the impact of IRS Revenue Procedure 2018-17 and IRS Notice 2018-26 as well as the mix of global pre-tax income among jurisdictions. Because the changes included in the Tax Act are broad and complex, on December 22, 2017, the SEC issued Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”), which provides guidance on accounting for tax effects of the Tax Act. SAB 118 provides a measurement period that should not extend beyond one year from the Tax Act enactment date for companies to complete the accounting under ASC 740. In accordance with SAB 118, a company must reflect the income tax effects of those aspects of the Tax Act for which the accounting under ASC 740 is complete. To the extent that a company’s accounting for certain income tax effects of the Tax Act is incomplete but it is able to determine a reasonable estimate, it must record a provisional estimate to be included in the financial statements. If a company cannot determine a provisional estimate to be included in the financial statements, it should continue to apply ASC 740 on the basis of the provision of the tax laws that were in effect immediately before the enactment of the Tax Act. While the Company is able to make reasonable estimates of the impact of the reduction in corporate rate and the deemed repatriation transition tax, the final impact of the Tax Act may differ from these estimates, due to, among other things, changes in the Company’s interpretations and assumptions, additional guidance that may be issued by the either the Internal Revenue Service or the U.S. Department of Treasury, and actions the Company may take. The Company is continuing to gather additional information to determine the final impact. While the Company was able to make reasonable estimates of certain impacts (and therefore, recorded provisional adjustments), the Company’s accounting for the following elements of the Tax Act, for the three months ended March 31, 2018, is incomplete as follows: Reduction of U.S. federal corporate tax rate: The Tax Act reduces the corporate tax rate to 21%, effective January 1, 2018. The Company recorded a provisional decrease in its deferred tax liability of $40.6 million, with a corresponding adjustment to deferred income tax benefit of $40.6 million for the year ended December 31, 2017. While the Company is able to make a reasonable estimate of the impact of the reduction in the corporate rate, it may be affected by other analyses related to the Tax Act which are still ongoing, including, but not limited to, the state tax effect of adjustments made to federal temporary differences. For the three months ended March 31, 2018, the Company has not made adjustments to the deferred tax liability and corresponding deferred income tax benefit recorded December 31, 2017. Deemed Repatriation Transition Tax: The Deemed Repatriation Transition Tax (“Transition Tax”) is a tax on previously untaxed accumulated and current earnings and profits of certain foreign subsidiaries. To determine the amount of the Transition Tax, the Company must determine, in addition to other factors, the amount of post-1986 earnings and profits of the relevant subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. The Company was able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax obligation of $30.3 million for the year ended December 31, 2017. During the past quarter, the IRS released Revenue Procedure 2018-17 and Notice 2018-26 which increased the provisional Transition Tax by $0.1 million. Therefore, as of March 31, 2018 the Company had recorded a provisional Transition Tax obligation of $30.4 million. The Company is continuing to gather additional information to more precisely compute the amount of Transition Tax. Removal of permanent reinvestment representation on certain undistributed foreign earnings: As a result of the enactment of the Tax Act, the Company has decided to remove the Permanent Reinvestment Representation with respect to certain of its subsidiaries in Canada, Italy, and Germany, as of December 31, 2017. Under the mandatory repatriation provisions of the Tax Act, post-1986 undistributed earnings were taxed in the U.S. as if they were distributed before December 31, 2017. However, with the removal of the permanent reinvestment representation with respect to select subsidiaries in Canada, Italy, and Germany, the non-creditable withholding taxes and any local country taxes associated with future dividends from these subsidiaries are required to be recorded as deferred tax liabilities as of the end of 2017. The Company recorded a provisional increase in its deferred tax liability of $9.2 million, with a corresponding adjustment to deferred income tax expense of $9.2 million for the year ending December 31, 2017. The Company is considering removal of the permanent reinvestment representation with respect to its remaining subsidiaries, which it estimates would result in an additional $8.2 million increase in its deferred tax liability. For the three months ended March 31, 2018, the Company has not made changes to the provisional amount relating to the permanent reinvestment representations made at December 31, 2017. Global intangible low taxed income: The Tax Act creates a new requirement that certain income (i.e.,GILTI) earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFCs’ U.S. shareholder. GILTI is the excess of the U.S. shareholder’s “net CFC tested income” over the net deemed intangible income return, which is currently defined as the excess of (1) 10% of the aggregate of the U.S. shareholder’s pro rata share of the qualified business asset investment of each CFC with respect to which it is a U.S. shareholder over (2) the amount of certain interest expense taken into account in the determination of net CFC-tested income. In January 2018, FASB released guidance on the accounting for the GILTI tax. The guidance indicates that either accounting for deferred taxes related to GILTI tax inclusions or treating the GILTI tax as a period cost are acceptable methods subject to an accounting policy election. Because of the complexity of the new GILTI tax rules, the Company is continuing to evaluate this provision of the Tax Act and the application of ASC 740. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Due to the potential for resolution of federal, state and foreign examinations, and the expiration of various statutes of limitation, it is reasonably possible that the Company’s gross unrecognized tax benefits balance may change within the next twelve months by a range of zero to $1.5 million.

Basis of Presentation and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Recently Adopted and Issued Accounting Standards	Recently Adopted Accounting Standards In February 2018, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which requires an entity to disclose its accounting policy related to releasing income tax effects from accumulated other comprehensive income (loss), whether it has elected to reclassify the stranded tax effects in accumulated other comprehensive income (loss) to retained earnings in the statement of shareholder’s equity and if it has elected to reclassify the stranded tax effects in accumulated other comprehensive income (loss) to retained earnings, what the reclassification encompasses. The Company early adopted this standard on a retrospective basis on January 1, 2018. The adoption resulted in an increase of $6.4 million to Retained earnings and a corresponding change of $6.4 million to Accumulated other comprehensive income (loss) at January 1, 2018. In January 2017, the FASB issued ASU 2017-01, Clarifying the Definition of a Business, which clarifies the definition of a business and assists entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. Under this guidance, when substantially all of the fair value of gross assets acquired is concentrated in a single asset or group of similar assets, the assets acquired would not represent a business. In addition, in order to be considered a business, an acquisition would have to include at a minimum an input and a substantive process that together significantly contribute to the ability to create an output. The amended guidance also narrows the definition of outputs by more closely aligning it with how outputs are described in FASB guidance for revenue recognition. The Company adopted this standard on January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, Intra-Entity Transfers of Assets Other Than Inventory, which amends Accounting Standards Codification (“ASC”) 740, Income Taxes. This ASU requires that the income tax consequences of an intra-entity asset transfer other than inventory are recognized at the time of the transfer. An entity will continue to recognize the income tax consequences of an intercompany transfer of inventory when the inventory is sold to a third party. The Company adopted this standard on a modified-retrospective basis on January 1, 2018. The adoption resulted in a decrease of $7.3 million to Other current assets, a decrease of $6.7 million to Deferred income taxes and a decrease of $0.6 million to Retained earnings at January 1, 2018. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments (a consensus of the FASB Emerging Issues Task Force). This ASU addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The Company adopted this standard on January 1, 2018. The adoption of this standard did not have a material impact on our condensed consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which replaces numerous requirements in U.S. GAAP, including industry-specific requirements, and provides companies with a new five-step model for recognizing revenue from contracts with customers. Under ASU 2014-09, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The FASB has also issued the following standards which clarify ASU 2014-09 and have the same effective date as the original standard: ASU 2016-08, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net); ASU 2016-10, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing; ASU 2016-12, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients; and ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. In 2016, we established an implementation team and analyzed the impact of the standard by surveying business units and performing extensive contract reviews to identify potential differences that may result from applying the requirements of the new standard. The contract reviews generally supported the recognition of revenue at a point in time, which is consistent with the current revenue recognition model used by most of our business units. As a result, revenue recognition remains unchanged under the new standard. For our business units that currently recognize revenue under a percentage of completion model, revenue recognition also remains unchanged as the contract reviews supported the recognition of revenue over time. The Company has implemented the appropriate changes to its processes, systems and controls to comply with the new guidance. The Company adopted this standard on January 1, 2018 using the modified retrospective approach applied to contracts that were not completed as of January1, 2018. The adoption of this standard did not have an impact on our condensed consolidated financial statements. The Company elected the following practical expedients: significant financing component, sales tax presentation, contract costs, shipping and handling activities, and disclosures. See Note 4 for further details on revenue. Recently Issued Accounting Standards In February 2016, the FASB issued ASU 2016-02, Leases, which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (i.e. lessees and lessors). The standard introduces a new lessee model that will require most leases to be recorded on the balance sheet and eliminates the required use of bright line tests in current U.S. GAAP for determining lease classification. The new standard requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. This standard is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Companies are permitted to adopt the standard early and a modified retrospective application is permitted. The new guidance requires adoption on a retrospective basis unless it is impracticable to apply, in which case the Company would be required to apply the amendments prospectively as of the earliest date practicable.The Company is currently evaluating the impact of adopting the new guidance on its condensed consolidated financial statements.

Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Schedule of Information On Company's Business Segments



	Three Months Ended March 31,
	2018			2017
Net sales
Fluid & Metering Technologies
External customers	$	232,261		$	216,655
Intersegment sales	72			115
Total segment sales	232,333			216,770
Health & Science Technologies
External customers	220,967			199,575
Intersegment sales	108			104
Total segment sales	221,075			199,679
Fire & Safety/Diversified Products
External customers	159,096			137,322
Intersegment sales	77			125
Total segment sales	159,173			137,447
Intersegment elimination	(257		)	(344		)
Total net sales	$	612,324		$	553,552
Operating income
Fluid & Metering Technologies	$	66,166		$	57,813
Health & Science Technologies	51,806			42,238
Fire & Safety/Diversified Products	39,554			32,626
Corporate office	(20,843		)	(17,006		)
Total operating income	136,683			115,671
Interest expense	11,000			11,552
Other (income) expense - net	(4,449		)	(308		)
Income before income taxes	$	130,132		$	104,427



	March 31, 2018		December 31, 2017
Assets
Fluid & Metering Technologies	$	1,138,501	$	1,101,580
Health & Science Technologies	1,339,090		1,323,373
Fire & Safety/Diversified Products	771,702		744,515
Corporate office	236,166		230,160
Total assets	$	3,485,459	$	3,399,628

Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Revenue by reporting unit was as follows:



	Three Months Ended March 31, 2018
Energy	$	38,759
Valves	26,029
Water	58,840
Pumps	80,666
Agriculture	28,039
Intersegment elimination	(72		)
Fluid & Metering Technologies	232,261
Scientific Fluidics & Optics	99,507
Sealing Solutions	53,702
Gast	28,512
Micropump	9,298
Material Processing Technologies	30,056
Intersegment elimination	(108		)
Health & Science Technologies	220,967
Fire & Safety	96,212
Band-It	27,474
Dispensing	35,487
Intersegment elimination	(77		)
Fire & Safety/Diversified Products	159,096
Total net sales	$	612,324

Schedule of External Net Sales Disaggregated by Geography

Revenue by geographical region was as follows:



	Three Months Ended March 31, 2018
	FMT			HST			FSDP			IDEX
U.S.	$	133,153		$	93,808		$	72,497		$	299,458
Europe	43,599			73,779			47,119			164,497
Asia	26,398			44,548			24,233			95,179
Rest of world ⁽¹⁾	29,183			8,940			15,324			53,447
Intersegment elimination	(72		)	(108		)	(77		)	(257		)
Total net sales	$	232,261		$	220,967		$	159,096		$	612,324

⁽¹⁾ Rest of world includes: North America excluding U.S., South America, Middle East, Australia and Africa.

Schedule of Contract with Customer, Asset and Liability

The composition of Customer receivables was as follows:



	March 31, 2018		January 1, 2018
Billed receivables	$	318,305	$	285,800
Unbilled receivables	13,296		11,996
Total customer receivables	$	331,601	$	297,796

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The composition of Deferred revenue was as follows:



	March 31, 2018		January 1, 2018
Deferred revenue - current	$	12,586	$	11,031
Deferred revenue - noncurrent	3,489		3,297
Total deferred revenue	$	16,075	$	14,328

Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Schedule of Basic Weighted Average Shares Reconciles to Diluted Weighted Average Shares

Basic weighted average shares outstanding reconciles to diluted weighted average shares outstanding as follows:



	Three Months Ended March 31,
	2018	2017
Basic weighted average common shares outstanding	76,419	76,115
Dilutive effect of stock options, restricted stock and performance share units	1,320	779
Diluted weighted average common shares outstanding	77,739	76,894

Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories as of March 31, 2018 and December 31, 2017 were:



	March 31, 2018		December 31, 2017
Raw materials and component parts	$	180,440	$	169,676
Work in process	37,149		33,668
Finished goods	66,287		56,380
Total inventories	$	283,876	$	259,724

Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the three months ended March 31, 2018, by reportable business segment, were as follows:



	FMT		HST		FSDP		IDEX
Balance at December 31, 2017	$	586,064	$	740,032	$	378,062	$	1,704,158
Foreign currency translation	3,661		8,879		4,953		17,493
Acquisition adjustments	—		1,117		—		1,117
Balance at March 31, 2018	$	589,725	$	750,028	$	383,015	$	1,722,768

Schedule of Gross Carrying Value and Accumulated Amortization For Each Major Class of Intangible Asset

The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at March 31, 2018 and December 31, 2017:



	At March 31, 2018								At December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net		Weighted Average Life	Gross Carrying Amount		Accumulated Amortization			Net
Amortized intangible assets:
Patents	$	9,644	$	(7,355	)	$	2,289	11	$	9,633	$	(7,143	)	$	2,490
Trade names	118,575		(52,945		)	65,630		16	117,206		(50,604		)	66,602
Customer relationships	308,857		(120,749		)	188,108		13	317,316		(124,566		)	192,750
Unpatented technology	92,759		(31,743		)	61,016		13	91,166		(29,428		)	61,738
Other	700		(455		)	245		10	839		(573		)	266
Total amortized intangible assets	530,535		(213,247		)	317,288			536,160		(212,314		)	323,846
Indefinite-lived intangible assets:
Banjo trade name	62,100		—			62,100			62,100		—			62,100
Akron Brass trade name	28,800		—			28,800			28,800		—			28,800
Total intangible assets	$	621,435	$	(213,247	)	$	408,188		$	627,060	$	(212,314	)	$	414,746

Borrowings (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Borrowings

Borrowings at March 31, 2018 and December 31, 2017 consisted of the following:



	March 31, 2018		December 31, 2017
Revolving Facility	$	11,079	$	10,740
4.5% Senior Notes, due December 2020	300,000		300,000
4.2% Senior Notes, due December 2021	350,000		350,000
3.2% Senior Notes, due June 2023	100,000		100,000
3.37% Senior Notes, due June 2025	100,000		100,000
Other borrowings	2,409		1,446
Total borrowings	863,488		862,186
Less current portion	835		258
Less deferred debt issuance costs	2,052		2,204
Less unaccreted debt discount	870		936
Total long-term borrowings	$	859,731	$	858,788

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Paragraph 8
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

The following table sets forth the fair value amounts of derivative instruments held by the Company as of March 31, 2018 and December 31, 2017:



	Fair Value Assets
	March 31, 2018		December 31, 2017		Balance Sheet Caption
Foreign currency exchange contracts	$	362	$	5,779	Other current assets

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41641-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41678-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579240-113959

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41620-113959

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(n)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Company's Financial Assets and (Liabilities) at Fair Value on Recurring Basis

The following table summarizes the basis used to measure the Company’s financial assets at fair value on a recurring basis in the balance sheets at March 31, 2018 and December 31, 2017:



	Basis of Fair Value Measurements
	Balance at March 31, 2018		Level 1		Level 2		Level 3
Available for sale securities	$	6,771	$	6,771	$	—	$	—
Foreign currency exchange contracts	362		—		362		—



	Basis of Fair Value Measurements
	Balance at December 31, 2017		Level 1		Level 2		Level 3
Available for sale securities	$	6,742	$	6,742	$	—	$	—
Foreign currency exchange contracts	5,779		—		5,779		—

Restructuring (Tables)

3 Months Ended

Mar. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Costs

Pre-tax restructuring expenses by segment for the three months ended March 31, 2018 are as follows:



	Severance Costs		Exit Costs		Total
Fluid & Metering Technologies	$	143	$	—	$	143
Health & Science Technologies	967		92		1,059
Fire & Safety/Diversified Products	100		—		100
Corporate/Other	340		—		340
Total restructuring costs	$	1,550	$	92	$	1,642

Schedule of Restructuring Reserve

The changes in the restructuring accrual for the three months ended March 31, 2018 are as follows:



	Restructuring
Balance at January 1, 2018	$	4,180
Restructuring expenses	1,642
Payments, utilization and other	(2,407		)
Balance at March 31, 2018	$	3,415

Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The components of other comprehensive income (loss) are as follows:



	Three Months Ended March 31, 2018							Three Months Ended March 31, 2017
	Pre-tax		Tax			Net of tax		Pre-tax		Tax			Net of tax
Cumulative translation adjustment	$	27,578	$	—		$	27,578	$	21,050	$	—		$	21,050
Pension and other postretirement adjustments	1,918		(505		)	1,413		1,676		(552		)	1,124
Reclassification adjustments for derivatives	1,632		(371		)	1,261		1,677		(635		)	1,042
Total other comprehensive income (loss)	$	31,128	$	(876	)	$	30,252	$	24,403	$	(1,187	)	$	23,216

Reclassification out of Accumulated Other Comprehensive Income

The following table summarizes the amounts reclassified from accumulated other comprehensive income (loss) to net income during the three months ended March 31, 2018 and 2017:



	Three Months Ended March 31,
	2018			2017
Pension and other postretirement plans:
Amortization of service cost	$	1,918		$	1,676
Total before tax	1,918			1,676
Provision for income taxes	(505		)	(552		)
Total net of tax	$	1,413		$	1,124
Derivatives:
Reclassification adjustments	$	1,632		$	1,677
Total before tax	1,632			1,677
Provision for income taxes	(371		)	(635		)
Total net of tax	$	1,261		$	1,042

Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Weighted Average Option Fair Values and Assumptions




	Three Months Ended March 31,
	2018	2017
Weighted average fair value of grants	$37.96	$24.11
Dividend yield	1.07%	1.45%
Volatility	28.49%	29.41%
Risk-free interest rate	2.01% - 3.17%	0.82% - 3.04%
Expected life (in years)	5.78	5.83

Schedule of Compensation Cost for Stock Options

Total compensation cost for stock options is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	206		$	186
Selling, general and administrative expenses	2,524			2,284
Total expense before income taxes	2,730			2,470
Income tax benefit	(470		)	(747		)
Total expense after income taxes	$	2,260		$	1,723

Schedule of Stock Option Activity

A summary of the Company’s stock option activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Stock Options	Shares		Weighted Average Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 1, 2018	1,924,683		$	71.07	6.87	$	117,209,218
Granted	300,495		138.12
Exercised	(104,754	)	62.91
Forfeited	(16,746	)	90.72
Outstanding at March 31, 2018	2,103,678		$	80.90	7.12	$	129,612,247
Vested and expected to vest as of March 31, 2018	1,967,982		$	79.10	6.99	$	124,784,752
Exercisable at March 31, 2018	1,149,993		$	63.95	5.77	$	90,343,139

Schedule of Restricted Stock Activity

A summary of the Company’s restricted stock activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented as follows:



Restricted Stock	Shares		Weighted-Average Grant Date Fair Value
Unvested at January 1, 2018	182,023		$	83.37
Granted	28,555		138.06
Vested	(52,650	)	78.82
Forfeited	(3,250	)	84.78
Unvested at March 31, 2018	154,678		$	94.98

Schedule of Compensation Cost for Restricted Stock

Total compensation cost for restricted shares is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	156		$	152
Selling, general and administrative expenses	1,289			1,253
Total expense before income taxes	1,445			1,405
Income tax benefit	(257		)	(439		)
Total expense after income taxes	$	1,188		$	966

Schedule of Unvested Cash-settled Restricted Stock Activity

A summary of the Company’s unvested cash-settled restricted stock activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Cash-Settled Restricted Stock	Shares		Weighted-Average Fair Value
Unvested at January 1, 2018	94,730		$	131.97
Granted	25,880		138.12
Vested	(24,935	)	136.83
Forfeited	(1,310	)	142.51
Unvested at March 31, 2018	94,365		$	142.51

Schedule of Compensation Cost for Unvested Cash-settled Restricted Stock

Total compensation cost for cash-settled restricted stock is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	413		$	248
Selling, general and administrative expenses	1,204			430
Total expense before income taxes	1,617			678
Income tax benefit	(159		)	(142		)
Total expense after income taxes	$	1,458		$	536

Schedule of Weighted Average Performance Share Units Fair Values and Assumptions



	Three Months Ended March 31,
	2018	2017
Weighted average fair value of grants	$216.59	$115.74
Dividend yield	—%	—%
Volatility	17.42%	17.36%
Risk-free interest rate	2.40%	1.45%
Expected life (in years)	2.85	2.85

Schedule of Performance Shares Units Activity

A summary of the Company’s performance share unit activity as of March 31, 2018, and changes during the three months ended March 31, 2018, are presented in the following table:



Performance Share Units	Shares		Weighted-Average Grant Date Fair Value
Unvested at January 1, 2018	136,870		$	113.81
Granted	52,375		216.59
Vested	—		—
Forfeited	(2,385	)	134.85
Unvested at March 31, 2018	186,860		$	142.57

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Total compensation cost for performance share units is as follows:



	Three Months Ended March 31,
	2018			2017
Cost of goods sold	$	—		$	—
Selling, general and administrative expenses	1,860			1,606
Total expense before income taxes	1,860			1,606
Income tax benefit	(317		)	(507		)
Total expense after income taxes	$	1,543		$	1,099

Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2018

Pension Benefits

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans

The following tables provide the components of net periodic benefit cost for its major defined benefit plans and its other postretirement plans.



	Pension Benefits
	Three Months Ended March 31,
	2018						2017
	U.S.			Non-U.S.			U.S.			Non-U.S.
Service cost	$	254		$	545		$	254		$	482
Interest cost	653			361			660			308
Expected return on plan assets	(983		)	(290		)	(944		)	(264		)
Net amortization	685			330			642			382
Net periodic benefit cost	$	609		$	946		$	612		$	908

Other Postretirement Benefits

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans



	Other Postretirement Benefits
	Three Months Ended March 31,
	2018			2017
Service cost	$	168		$	152
Interest cost	203			204
Net amortization	(184		)	(198		)
Net periodic benefit cost	$	187		$	158

Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other current assets	$ 43,781		$ 74,203
Deferred income taxes	131,646		137,638
Retained earnings	$ 2,162,663		2,057,915
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			0
Accounting Standards Update 2018-02 \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			6,435
Accounting Standards Update 2016-16
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			(645)
Other current assets		$ (7,300)
Deferred income taxes		6,700
Retained earnings		$ (600)
Accounting Standards Update 2016-16 \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			(645)
Adjustments for New Accounting Pronouncement \| Accounting Standards Update 2018-02 \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			(6,400)
Adjustments for New Accounting Pronouncement \| Accounting Standards Update 2018-02 \| AOCI
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adoption results			$ 6,400

Acquisitions and Divestitures - Acquisitions (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 08, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill		$ 1,722,768		$ 1,704,158
thinXXS Microtechnology AG (thinXXS)
Business Acquisition [Line Items]
Aggregate purchase price, cash paid	$ 38,200
Long-term debt	1,200
Goodwill	25,000
Intangible assets	$ 10,600
Selling, general and administrative expenses
Business Acquisition [Line Items]
Acquisition-related transaction costs		$ 700	$ 100

Acquisitions and Divestitures - Divestitures (Details) - USD ($)		3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense		$ 31,174,000		$ 28,528,000
Faure Herman subsidiary \| Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of business	$ 21,800,000
Gain on sale of businesses - net			$ 9,300,000
Income tax expense			$ 0

Business Segments - Schedule of Information on Company's Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 612,324	$ 553,552
Operating income	136,683	115,671
Interest expense	11,000	11,552
Other (income) expense - net	(4,449)	(308)
Income before income taxes	130,132	104,427
Total assets	3,485,459		$ 3,399,628
Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	(257)	(344)
Corporate office
Segment Reporting Information [Line Items]
Operating income	(20,843)	(17,006)
Total assets	236,166		230,160
Fluid & Metering Technologies
Segment Reporting Information [Line Items]
Net sales	232,261	216,655
Operating income	66,166	57,813
Fluid & Metering Technologies \| Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	(72)	(115)
Fluid & Metering Technologies \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	232,333	216,770
Total assets	1,138,501		1,101,580
Health & Science Technologies
Segment Reporting Information [Line Items]
Net sales	220,967	199,575
Operating income	51,806	42,238
Health & Science Technologies \| Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	(108)	(104)
Health & Science Technologies \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	221,075	199,679
Total assets	1,339,090		1,323,373
Fire & Safety/Diversified Products
Segment Reporting Information [Line Items]
Net sales	159,096	137,322
Operating income	39,554	32,626
Fire & Safety/Diversified Products \| Intersegment elimination
Segment Reporting Information [Line Items]
Net sales	(77)	(125)
Fire & Safety/Diversified Products \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	159,173	$ 137,447
Total assets	$ 771,702		$ 744,515

Revenue Revenue - Revenue by Reporting Unit (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Total net sales	$ 612,324
Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(257)
Fluid & Metering Technologies
Disaggregation of Revenue [Line Items]
Total net sales	232,261
Fluid & Metering Technologies \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	232,261
Fluid & Metering Technologies \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(72)
Fluid & Metering Technologies \| Energy \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	38,759
Fluid & Metering Technologies \| Valves \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	26,029
Fluid & Metering Technologies \| Water \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	58,840
Fluid & Metering Technologies \| Pumps \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	80,666
Fluid & Metering Technologies \| Agriculture \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	28,039
Health & Science Technologies
Disaggregation of Revenue [Line Items]
Total net sales	220,967
Health & Science Technologies \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	220,967
Health & Science Technologies \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(108)
Health & Science Technologies \| Scientific Fluidics & Optics \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	99,507
Health & Science Technologies \| Sealing Solutions \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	53,702
Health & Science Technologies \| Gast \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	28,512
Health & Science Technologies \| Micropump \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	9,298
Health & Science Technologies \| Material Processing Technologies \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	30,056
Fire & Safety/Diversified Products
Disaggregation of Revenue [Line Items]
Total net sales	159,096
Fire & Safety/Diversified Products \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	159,096
Fire & Safety/Diversified Products \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(77)
Fire & Safety/Diversified Products \| Fire & Safety \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	96,212
Fire & Safety/Diversified Products \| Band-It \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	27,474
Fire & Safety/Diversified Products \| Dispensing \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	$ 35,487

Revenue - Revenue by Geography (Details) $ in Thousands	3 Months Ended
Revenue - Revenue by Geography (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Total net sales	$ 612,324
Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(257)
U.S. \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	299,458
Europe \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	164,497
Asia \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	95,179
Rest of world \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	53,447
FMT
Disaggregation of Revenue [Line Items]
Total net sales	232,261
FMT \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	232,261
FMT \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(72)
FMT \| U.S. \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	133,153
FMT \| Europe \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	43,599
FMT \| Asia \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	26,398
FMT \| Rest of world \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	29,183
HST
Disaggregation of Revenue [Line Items]
Total net sales	220,967
HST \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	220,967
HST \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(108)
HST \| U.S. \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	93,808
HST \| Europe \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	73,779
HST \| Asia \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	44,548
HST \| Rest of world \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	8,940
ESDP
Disaggregation of Revenue [Line Items]
Total net sales	159,096
ESDP \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	159,096
ESDP \| Intersegment elimination
Disaggregation of Revenue [Line Items]
Total net sales	(77)
ESDP \| U.S. \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	72,497
ESDP \| Europe \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	47,119
ESDP \| Asia \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	24,233
ESDP \| Rest of world \| Operating Segments
Disaggregation of Revenue [Line Items]
Total net sales	$ 15,324

Revenue - Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total customer receivables	$ 331,601	$ 297,796
Billed receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total customer receivables	318,305	285,800
Unbilled receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total customer receivables	$ 13,296	$ 11,996

Revenue - Deferred Revenue (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Deferred revenue - current	$ 12,586	$ 11,031
Deferred revenue - noncurrent	3,489	3,297
Total deferred revenue	$ 16,075	$ 14,328

Revenue - Additional Information (Details) - Revenue from Contract with Customer - Product Concentration Risk	3 Months Ended
	Mar. 31, 2018
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Revenue from products and services transferred to customers	95.00%
Transferred over Time
Disaggregation of Revenue [Line Items]
Revenue from products and services transferred to customers	5.00%

Earnings Per Common Share - Schedule of Basic Weighted Average Shares Reconciles to Diluted Weighted Average Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding (in shares)	76,419	76,115
Dilutive effect of stock options, restricted stock and performance share units (in shares)	1,320	779
Diluted weighted average common shares outstanding (in shares)	77,739	76,894

Earnings Per Common Share - Narrative (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Option to purchase common stock shares not included in the computation of diluted EPS (in shares)	0.3	0.3

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials and component parts	$ 180,440	$ 169,676
Work in process	37,149	33,668
Finished goods	66,287	56,380
Total inventories	$ 283,876	$ 259,724

Goodwill and Intangible Assets - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2017	$ 1,704,158
Foreign currency translation	17,493
Acquisition adjustments	1,117
Balance at March 31, 2018	1,722,768
FMT
Goodwill [Roll Forward]
Balance at December 31, 2017	586,064
Foreign currency translation	3,661
Acquisition adjustments	0
Balance at March 31, 2018	589,725
HST
Goodwill [Roll Forward]
Balance at December 31, 2017	740,032
Foreign currency translation	8,879
Acquisition adjustments	1,117
Balance at March 31, 2018	750,028
ESDP
Goodwill [Roll Forward]
Balance at December 31, 2017	378,062
Foreign currency translation	4,953
Acquisition adjustments	0
Balance at March 31, 2018	$ 383,015

Goodwill and Intangible Assets - Schedule of Gross Carrying Value and Accumulated Amortization for Each Major Class of Intangible Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 530,535	$ 536,160
Intangible assets - Gross Carrying Amount	621,435	627,060
Amortized intangible assets - Accumulated Amortization	(213,247)	(212,314)
Amortized intangible assets - Net	317,288	323,846
Intangible assets - Net	408,188	414,746
Banjo trade name
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible assets - Net	62,100	62,100
Akron Brass trade name
Goodwill And Intangible Assets [Line Items]
Indefinite lived intangible assets - Net	28,800	28,800
Patents
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	9,644	9,633
Amortized intangible assets - Accumulated Amortization	(7,355)	(7,143)
Amortized intangible assets - Net	$ 2,289	2,490
Amortized intangible assets - Weighted Average Life	11 years
Trade names
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 118,575	117,206
Amortized intangible assets - Accumulated Amortization	(52,945)	(50,604)
Amortized intangible assets - Net	$ 65,630	66,602
Amortized intangible assets - Weighted Average Life	16 years
Customer relationships
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 308,857	317,316
Amortized intangible assets - Accumulated Amortization	(120,749)	(124,566)
Amortized intangible assets - Net	$ 188,108	192,750
Amortized intangible assets - Weighted Average Life	13 years
Unpatented technology
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 92,759	91,166
Amortized intangible assets - Accumulated Amortization	(31,743)	(29,428)
Amortized intangible assets - Net	$ 61,016	61,738
Amortized intangible assets - Weighted Average Life	13 years
Other
Goodwill And Intangible Assets [Line Items]
Amortized intangible assets - Gross Carrying Amount	$ 700	839
Amortized intangible assets - Accumulated Amortization	(455)	(573)
Amortized intangible assets - Net	$ 245	$ 266
Amortized intangible assets - Weighted Average Life	10 years

Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 10,871	$ 11,789
Intangible assets, amortization expense
Remaining of 2018	28,100
2019	35,800
2020	35,000
2021	33,700
2022	$ 32,000

Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Payroll and related items	$ 60,647	$ 75,869
Management incentive compensation	6,637	24,320
Income taxes payable	24,800	28,033
Insurance	9,764	9,424
Warranty	6,239	6,281
Deferred revenue	12,586	11,031
Restructuring	3,415	4,180
Liability for uncertain tax positions	1,484	1,745
Accrued interest	10,440	1,759
Other	22,144	22,063
Total accrued expenses	$ 158,156	$ 184,705

Other Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Pension and retiree medical obligations	$ 100,491	$ 99,646
Transition tax payable	27,877	27,877
Liability for uncertain tax positions	1,047	1,047
Deferred revenue	3,489	3,297
Liability for construction of new leased facility	5,801	0
Other	22,210	23,818
Total other noncurrent liabilities	$ 160,915	$ 155,685

- Definition

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References + Details

Borrowings - Schedule of Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jun. 13, 2016
Debt Instrument [Line Items]
Total borrowings	$ 863,488	$ 862,186
Less current portion	835	258
Less deferred debt issuance costs	2,052	2,204
Less unaccreted debt discount	870	936
Total long-term borrowings	$ 859,731	858,788
4.5% Senior Notes, due December 2020
Debt Instrument [Line Items]
Stated interest rate	4.50%
4.2% Senior Notes, due December 2021
Debt Instrument [Line Items]
Stated interest rate	4.20%
3.2% Senior Notes, due June 2023
Debt Instrument [Line Items]
Stated interest rate	3.20%
3.37% Senior Notes, due June 2025
Debt Instrument [Line Items]
Stated interest rate	3.37%
Revolving Facility
Debt Instrument [Line Items]
Revolving Facility	$ 11,079	10,740
Senior Notes \| 4.5% Senior Notes, due December 2020
Debt Instrument [Line Items]
Total borrowings	300,000	300,000
Senior Notes \| 4.2% Senior Notes, due December 2021
Debt Instrument [Line Items]
Total borrowings	350,000	350,000
Senior Notes \| 3.2% Senior Notes, due June 2023
Debt Instrument [Line Items]
Total borrowings	100,000	100,000
Stated interest rate			3.20%
Senior Notes \| 3.37% Senior Notes, due June 2025
Debt Instrument [Line Items]
Total borrowings	100,000	100,000
Stated interest rate			3.37%
Other borrowings
Debt Instrument [Line Items]
Other borrowings	$ 2,409	$ 1,446

Borrowings - Narrative (Details)		3 Months Ended
Borrowings - Narrative (Details)	Jun. 23, 2015 USD ($)	Mar. 31, 2018 USD ($) covenant	Dec. 31, 2017 USD ($)	Jun. 13, 2016 USD ($)
Credit Agreement
Line of Credit Facility [Line Items]
Debt instrument, term	5 years
Borrowing capacity	$ 700,000,000
Expiration date	Jun. 23, 2020
Extension period	1 year
Aggregate lending commitments	$ 350,000,000
Applicable margin over LIBOR		1.10%
Effective percentage		1.12%
Minimum
Line of Credit Facility [Line Items]
Required percent for prepayment amount of aggregate principal amount				5.00%
Minimum \| Credit Agreement
Line of Credit Facility [Line Items]
Applicable margin over LIBOR		0.005%
Maximum \| Credit Agreement
Line of Credit Facility [Line Items]
Applicable margin over LIBOR		1.50%
3.2% Senior Notes, due June 2023
Line of Credit Facility [Line Items]
Stated interest rate		3.20%
3.37% Senior Notes, due June 2025
Line of Credit Facility [Line Items]
Stated interest rate		3.37%
4.5% Senior Notes, due December 2020
Line of Credit Facility [Line Items]
Stated interest rate		4.50%
4.2% Senior Notes, due December 2021
Line of Credit Facility [Line Items]
Stated interest rate		4.20%
Senior Notes \| Minimum
Line of Credit Facility [Line Items]
Interest coverage ratio		3.0
Senior Notes \| Maximum
Line of Credit Facility [Line Items]
Limitation of outstanding principal of higher preference debt as percent of consolidated assets		15.00%
Leverage ratio		3.50
Senior Notes \| 3.2% Senior Notes, due June 2023
Line of Credit Facility [Line Items]
Face amount of debt				$ 100,000,000
Stated interest rate				3.20%
Senior Notes \| 3.37% Senior Notes, due June 2025
Line of Credit Facility [Line Items]
Face amount of debt				$ 100,000,000
Stated interest rate				3.37%
Letters Of Credit \| Credit Agreement
Line of Credit Facility [Line Items]
Borrowing capacity	75,000,000
Swing line Loans \| Credit Agreement
Line of Credit Facility [Line Items]
Borrowing capacity	$ 50,000,000
Revolving Facility
Line of Credit Facility [Line Items]
Current borrowings under revolving facility		$ 11,079,000	$ 10,740,000
Outstanding letters of credit		8,000,000
Amount available to borrow		$ 680,900,000
Number of financial covenants \| covenant		2

Derivative Instruments - Narrative (Details)	3 Months Ended		24 Months Ended
Derivative Instruments - Narrative (Details)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2011 USD ($) instrument	Mar. 31, 2018 EUR (€)
Derivative [Line Items]
Amortization of interest expense	$ 332,000	$ 329,000
Amount to be recognized from hedged transactions within 12 months, approximate	6,400,000
Other (Income) Expense Net
Derivative [Line Items]
Foreign currency transaction loss	1,200,000	400,000
4.2% Senior Notes, due December 2021
Derivative [Line Items]
Interest rate on senior notes			4.20%
4.5% Senior Notes, due December 2020
Derivative [Line Items]
Interest rate on senior notes			4.50%
Interest Rate Contract
Derivative [Line Items]
Number of instruments held \| instrument			2
Interest Rate Exchange Agreement Expiring 2010 and 2011
Derivative [Line Items]
Amortization of interest expense			$ 68,900,000
Term of amortized interest expense, years			10 years
Foreign currency exchange contracts
Derivative [Line Items]
Notional amount \| €				€ 180,000,000
Cash received from settlement of contracts	6,600,000.0
Foreign currency exchange contracts \| Other (Income) Expense Net
Derivative [Line Items]
Gain on derivatives	$ 1,200,000	$ 400,000

Derivative Instruments - Fair Value Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other current assets \| Foreign currency exchange contracts
Derivative [Line Items]
Fair Value Assets	$ 0	$ 5,779

Fair Value Measurements - Schedule of Company Financial Assets and Liabilities at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 6,771	$ 6,742
Foreign currency exchange contracts	362	5,779
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	6,771	6,742
Foreign currency exchange contracts	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Foreign currency exchange contracts	362	5,779
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Foreign currency exchange contracts	$ 0	$ 0

Fair Value Measurements - Narrative (Details) $ in Millions	Mar. 31, 2018 USD ($)
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 874.2
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 860.6
3.2% Senior Notes, due June 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	3.20%
3.37% Senior Notes, due June 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	3.37%
4.5% Senior Notes, due December 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	4.50%
4.2% Senior Notes, due December 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate	4.20%

Restructuring - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Restructuring and Related Activities [Abstract]
Total restructuring costs	$ 1,642	$ 4,797
Restructuring reserve	$ 3,415		$ 4,180

Restructuring - Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 1,642	$ 4,797
Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	340
Fluid & Metering Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	143
Health & Science Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,059
Fire & Safety/Diversified Products \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	100
Severance Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,550
Severance Costs \| Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	340
Severance Costs \| Fluid & Metering Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	143
Severance Costs \| Health & Science Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	967
Severance Costs \| Fire & Safety/Diversified Products \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	100
Exit Costs
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	92
Exit Costs \| Corporate/Other
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0
Exit Costs \| Fluid & Metering Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	0
Exit Costs \| Health & Science Technologies \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	92
Exit Costs \| Fire & Safety/Diversified Products \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 0

Restructuring - Restructuring Accruals (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Reserve [Roll Forward]
Balance at January 1, 2018	$ 4,180
Restructuring expenses	1,642	$ 4,797
Payments, utilization and other	(2,407)
Balance at March 31, 2018	$ 3,415

Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ 30,252	$ 23,216
AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	31,128	24,403
Total other comprehensive income (loss), Tax	(876)	(1,187)
Other comprehensive income (loss)	30,252	23,216
Cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	27,578	21,050
Total other comprehensive income (loss), Tax	0	0
Other comprehensive income (loss)	27,578	21,050
Pension and other postretirement adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	1,918	1,676
Total other comprehensive income (loss), Tax	(505)	(552)
Other comprehensive income (loss)	1,413	1,124
Reclassification adjustments for derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), Pre-tax	1,632	1,677
Total other comprehensive income (loss), Tax	(371)	(635)
Other comprehensive income (loss)	$ 1,261	$ 1,042

Other Comprehensive Income (Loss) - Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of service cost	$ (4,449)	$ (308)
Reclassification adjustments	11,000	11,552
Income before income taxes	130,132	104,427
Provision for income taxes	31,174	28,528
Net income	(98,958)	(75,899)
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of service cost	1,918	1,676
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before income taxes	(1,918)	(1,676)
Provision for income taxes	(505)	(552)
Net income	1,413	1,124
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustments	1,632	1,677
Income before income taxes	(1,632)	(1,677)
Provision for income taxes	(371)	(635)
Net income	$ 1,261	$ 1,042

Common and Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	Dec. 01, 2015	Apr. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Equity [Abstract]
Increase in share repurchase authorized amount	$ 300,000
Purchase of common stock (in shares)				82,000
Purchase of common shares at cost				$ 7,600
Purchase of common stock		$ 600	$ 0	$ 7,005
Remaining authorized repurchase amount			$ 550,900
Common stock, authorized (in shares)			150,000,000		150,000,000
Common stock, par value (in dollars per share)			$ 0.01		$ 0.01
Preferred stock, authorized (in shares)			5,000,000		5,000,000
Preferred stock, par value (in dollars per share)			$ 0.01		$ 0.01
Preferred stock, shares outstanding (in shares)			0		0

Share-Based Compensation - Schedule of Weighted Average Option Fair Values and Assumptions (Details) - Stock Option - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of grants (in dollars per share)	$ 37.96	$ 24.11
Dividend yield	1.07%	1.45%
Volatility	28.49%	29.41%
Risk-free interest rate, minimum	2.01%	0.82%
Risk-free interest rate, maximum	3.17%	3.04%
Expected life (in years)	5 years 9 months 11 days	5 years 9 months 29 days

Share-Based Compensation - Schedule of Compensation Cost for Stock Options (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 7,652	$ 6,159
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	2,730	2,470
Income tax benefit	(470)	(747)
Total expense after income taxes	2,260	1,723
Stock Option \| Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	206	186
Stock Option \| Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense	$ 2,524	$ 2,284

Share-Based Compensation - Stock Options Activity (Details) - Stock Option - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Shares
Beginning balance (in shares)	1,924,683
Granted (in shares)	300,495
Exercised (in shares)	(104,754)
Forfeited/Expired (in shares)	(16,746)
Ending balance (in shares)	2,103,678	1,924,683
Vested and expected to vest (in shares)	1,967,982
Exercisable (in shares)	1,149,993
Weighted Average Price
Beginning Balance, Weighted Average Price (in dollars per share)	$ 71.07
Granted, Weighted Average Price (in dollars per share)	138.12
Exercised, Weighted Average Price (in dollars per share)	62.91
Forfeited, Weighted Average Price (in dollars per share)	90.72
Ending Balance, Weighted Average Price (in dollars per share)	$ 80.90	$ 71.07
Weighted-Average Remaining Contractual Term
Stock options outstanding, Weighted-Average Remaining Contractual Term	7 years 1 month 13 days	6 years 10 months 13 days
Aggregate Intrinsic Value
Stock options outstanding, Aggregate intrinsic value	$ 129,612,247	$ 117,209,218
Vested and expected to vest , Weighted Average Price (in dollars per share)	$ 79.10
Exercisable, Weighted Average Price (in dollars per share)	$ 63.95
Weighted-Average Remaining Contractual Term, Vested and expected to vest	6 years 11 months 27 days
Weighted-Average Remaining Contractual Term, Exercisable	5 years 9 months 7 days
Aggregate Intrinsic Value, Vested and expected to vest	$ 124,784,752
Aggregate Intrinsic Value, Exercisable	$ 90,343,139

Share Based Compensation - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 28, 2018	Mar. 31, 2018	Dec. 31, 2017
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		28,555
Total unrecognized compensation cost		$ 6.5
Weighted-average period of total unrecognized compensation cost, in years		1 year 2 months 12 days
Restricted Stock \| Employees and Non-employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Cash-settled Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Granted (in shares)		25,880
Total unrecognized compensation cost		$ 5.9
Weighted-average period of total unrecognized compensation cost, in years		1 year 2 months 12 days
Performance Shares Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Granted (in shares)		52,375	62,755
Payout percent			239.00%
Stock issued during period (in shares)	143,897
Total unrecognized compensation cost		$ 13.7
Weighted-average period of total unrecognized compensation cost, in years		1 year 2 months 12 days
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost		$ 19.0
Weighted-average period of total unrecognized compensation cost, in years		1 year 7 months 6 days

Share-Based Compensation - Restricted Stock Units Activity (Details) - Restricted Stock	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Shares
Unvested, Beginning balance (in shares) \| shares	182,023
Granted (in shares) \| shares	28,555
Vested (in shares) \| shares	(52,650)
Forfeited (in shares) \| shares	(3,250)
Unvested, Ending balance (in shares) \| shares	154,678
Weighted-Average Grant Date Fair Value
Unvested, Beginning balance (in dollars per share) \| $ / shares	$ 83.37
Granted (in dollars per share) \| $ / shares	138.06
Vested (in dollars per share) \| $ / shares	78.82
Forfeited (in dollars per share) \| $ / shares	84.78
Unvested, Ending balance (in dollars per share) \| $ / shares	$ 94.98

Share-Based Compensation - Schedule of Compensation Cost for Restricted Stock Units (Details) - Restricted Stock - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,445	$ 1,405
Income tax benefit	(257)	(439)
Total expense after income taxes	1,188	966
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	156	152
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,289	$ 1,253

Share-Based Compensation - Cash-settled Restricted Stock Activity (Details) - Cash-settled Restricted Stock	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Shares
Unvested, Beginning balance (in shares) \| shares	94,730
Granted (in shares) \| shares	25,880
Vested (in shares) \| shares	(24,935)
Forfeited (in shares) \| shares	(1,310)
Unvested, Ending balance (in shares) \| shares	94,365
Weighted-Average Grant Date Fair Value
Unvested, Beginning balance (in dollars per share) \| $ / shares	$ 131.97
Granted (in dollars per share) \| $ / shares	138.12
Vested (in dollars per share) \| $ / shares	136.83
Forfeited (in dollars per share) \| $ / shares	142.51
Unvested, Ending balance (in dollars per share) \| $ / shares	$ 142.51

Share-Based Compensation - Schedule of Compensation Cost for Cash-settled Restricted Stock (Details) - Cash-settled Restricted Stock - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,617	$ 678
Income tax benefit	(159)	(142)
Total expense after income taxes	1,458	536
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	413	248
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,204	$ 430

Share-Based Compensation - Schedule of Weighted Average Performance Share Units Fair Values and Assumptions (Details) - Performance Shares Units - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of grants (in dollars per share)	$ 216.59	$ 115.74
Dividend yield	0.00%	0.00%
Volatility	17.42%	17.36%
Risk-free interest rate	2.40%	1.45%
Expected life (in years)	2 years 10 months 6 days	2 years 10 months 6 days

Share-Based Compensation - Performance Share Unit Activity (Details) - Performance Shares Units - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Shares
Unvested, Beginning balance (in shares)	136,870
Granted (in shares)	52,375	62,755
Vested (in shares)	0
Forfeited (in shares)	(2,385)
Unvested, Ending balance (in shares)	186,860	136,870
Weighted-Average Grant Date Fair Value
Unvested, Beginning balance (in dollars per share)	$ 113.81
Granted (in dollars per share)	216.59
Vested (in dollars per share)	0.00
Forfeited (in dollars per share)	134.85
Unvested, Ending balance (in dollars per share)	$ 142.57	$ 113.81

Share-Based Compensation - Schedule of Compensation Cost for Performance Share Units (Details) - Performance Shares Units - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,860	$ 1,606
Income tax benefit	(317)	(507)
Total expense after income taxes	1,543	1,099
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	0	0
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total expense before income taxes	$ 1,860	$ 1,606

Retirement Benefits - Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 168	$ 152
Interest cost	203	204
Net amortization	(184)	(198)
Net periodic benefit cost	187	158
U.S. \| Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	254	254
Interest cost	653	660
Expected return on plan assets	(983)	(944)
Net amortization	685	642
Net periodic benefit cost	609	612
Non-U.S. \| Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	545	482
Interest cost	361	308
Expected return on plan assets	(290)	(264)
Net amortization	330	382
Net periodic benefit cost	$ 946	$ 908

Retirement Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	$ 0.7
Minimum
Defined Benefit Plan Disclosure [Line Items]
Expected contributions in current fiscal year	5.0
Maximum
Defined Benefit Plan Disclosure [Line Items]
Expected contributions in current fiscal year	$ 20.0
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected contribution for next fiscal year		$ 5.5
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Expected contribution for next fiscal year		$ 0.1

Income Taxes (Details) - USD ($)	3 Months Ended			12 Months Ended
Income Taxes (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 31,174,000		$ 28,528,000
Effective tax rate	24.00%		27.30%
Deferred tax liability, provisional income tax benefit		$ 40,600,000
Accumulated foreign earnings, provisional liability	$ 30,400,000	$ 30,300,000		$ 30,300,000
Transition tax for accumulated foreign earnings, increase (decrease) in provisional income tax expense	100,000
Provisional increase, deferred tax liability, income tax (expense) benefit				9,200,000
Adjustment, deferred income tax expense (benefit)				9,200,000
Permanent reinvestment, deferred tax liability, income tax (expense) benefit				$ 8,200,000
Minimum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Reasonably possible change in unrecognized tax benefits over next 12 months	0
Maximum
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Reasonably possible change in unrecognized tax benefits over next 12 months	$ 1,500,000

Business Segments - Narrative (Details)	3 Months Ended
Business Segments - Narrative (Details)	Mar. 31, 2018 segment
Segment Reporting [Abstract]
Number of reportable business segments	3