AMETEK (AME) 10-K 21 Feb 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2018	Jan. 31, 2019	Jun. 29, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Entity Registrant Name	AMETEK INC/
Entity Central Index Key	1,037,868
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 16.7
Trading Symbol	AME
Entity Common Stock, Shares Outstanding		227,131,830
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net sales	$ 4,845,872	$ 4,300,170	$ 3,840,087
Cost of sales	3,186,310	2,861,370	2,585,499
Selling, general and administrative	584,022	535,180	463,609
Total operating expenses	3,770,332	3,396,550	3,049,108
Operating income	1,075,540	903,620	790,979
Interest expense	(82,180)	(98,029)	(94,304)
Other expense, net	(5,615)	(8,862)	(3,572)
Income before income taxes	987,745	796,729	693,103
Provision for income taxes	209,812	115,259	180,945
Net income	$ 777,933	$ 681,470	$ 512,158
Basic earnings per share	$ 3.37	$ 2.96	$ 2.20
Diluted earnings per share	$ 3.34	$ 2.94	$ 2.19
Weighted average common shares outstanding:
Basic shares	230,823	230,229	232,593
Diluted shares	232,712	231,845	233,730

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 777,933	$ 681,470	$ 512,158
Foreign currency translation:
Translation adjustments	(72,112)	159,507	(68,774)
Change in long-term intercompany notes	(16,569)	36,320	(7,597)
Net investment hedge instruments gain (loss), net of tax of ($12,384), $41,178 and $6,558 in 2018, 2017 and 2016, respectively	38,452	(109,412)	(12,179)
Defined benefit pension plans:
Net actuarial (loss) gain, net of tax of $(18,825), ($8,384) and $17,450 in 2018, 2017 and 2016, respectively	(75,253)	16,518	(55,259)
Amortization of net actuarial loss, net of tax of ($2,716), ($4,680) and ($2,090) in 2018, 2017 and 2016, respectively	9,313	9,910	6,618
Amortization of prior service costs, net of tax of $1,154, $4 and $25 in 2018, 2017 and 2016, respectively	(5,639)	(41)	(79)
Unrealized holding gain (loss) on available-for-sale securities:
Unrealized gain (loss), net of tax of $ -, ($221) and ($275) in 2018, 2017 and 2016, respectively	(104)	411	512
Other comprehensive (loss) income	(121,912)	113,213	(136,758)
Total comprehensive income	$ 656,021	$ 794,683	$ 375,400

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Tax benefit (expense) from investment hedge instruments	$ (12,384)	$ 41,178	$ 6,558
Tax benefit (expense) from change in pension plans	(18,825)	(8,384)	17,450
Tax related to amortization of net actuarial loss	(2,716)	(4,680)	(2,090)
Tax related to amortization of prior service costs	1,154	4	25
Tax benefit (expense) from increase (decrease) on available-for-sale securities	$ 0	$ (221)	$ (275)

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 353,975	$ 646,300
Receivables, net	732,839	668,176
Inventories, net	624,744	540,504
Other current assets	124,586	79,675
Total current assets	1,836,144	1,934,655
Property, plant and equipment, net	554,130	493,296
Goodwill	3,612,033	3,115,619
Other intangibles, net	2,403,771	2,013,365
Investments and other assets	256,210	239,129
Total assets	8,662,288	7,796,064
Current liabilities:
Short-term borrowings and current portion of long-term debt, net	358,876	308,123
Accounts payable	399,571	437,329
Customer advanced payments	137,229	0
Income taxes payable	48,597	34,660
Accrued liabilities	314,431	358,551
Total current liabilities	1,258,704	1,138,663
Long-term debt, net	2,273,837	1,866,166
Deferred income taxes	528,336	512,526
Other long-term liabilities	359,489	251,076
Total liabilities	4,420,366	3,768,431
Stockholders' equity:
Preferred stock, $0.01 par value; authorized 5,000,000 shares; none issued	0	0
Common stock, $0.01 par value; authorized 800,000,000 shares; issued: 2018 – 263,645,489 shares; 2017 – 262,947,829 shares	2,640	2,631
Capital in excess of par value	706,743	660,894
Retained earnings	5,653,811	5,002,419
Accumulated other comprehensive loss	(551,088)	(429,176)
Treasury stock: 2018 – 36,534,802 shares; 2017 – 31,754,106 shares	(1,570,184)	(1,209,135)
Total stockholders' equity	4,241,922	4,027,633
Total liabilities and stockholders' equity	$ 8,662,288	$ 7,796,064

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	800,000,000	800,000,000
Common stock, shares issued	263,645,489	262,947,829
Treasury stock, shares	36,534,802	31,754,106

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Capital Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Foreign Currency Items and Other [Member]	Defined Benefit Pension Plans [Member]	Unrealized Holding Gain (Loss) on Available-for-Sale securities [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]
Balance at the beginning of the year at Dec. 31, 2015		$ 2,608	$ 568,286	$ 3,974,793	$ (249,774)	$ (155,038)	$ (819)		$ (885,430)
Issuance of common stock under employee stock plans			8,484						10,031
Net income	$ 512,158			512,158
Translation adjustments	(68,774)				(68,774)
Net actuarial gain (loss), net of tax of ($8,384), $17,450 and $12,870 in 2017, 2016 and 2015, respectively	(55,259)					(55,259)
Shares issued		7
Increase (decrease) during the year, net of tax	512						512
Share-based compensation costs			22,030
Cash dividends paid				(83,267)
Change in long-term intercompany notes	(7,597)				(7,597)
Amortization of net actuarial loss, net of tax of ($4,680), ($2,090) and ($3,247) in 2017, 2016 and 2015, respectively	6,618					6,618
Purchase of treasury stock									(336,140)
Excess tax benefits from exercise of stock options			5,343
Other				(1)
Amortization of net actuarial loss, net of tax of ($2,716), ($4,680) and ($2,090) in 2018, 2017 and 2016, respectively	(12,179)				(12,179)
Amortization of prior service costs, net of tax of $1,154, $4 and $25 in 2018, 2017 and 2016, respectively	(79)					(79)
Balance at the end of the year at Dec. 31, 2016	3,256,513	2,615	604,143	4,403,683	(338,324)	(203,758)	(307)	$ (542,389)	(1,211,539)
Issuance of common stock under employee stock plans			31,660						9,271
Net income	681,470			681,470
Translation adjustments	159,507				159,507
Net actuarial gain (loss), net of tax of ($8,384), $17,450 and $12,870 in 2017, 2016 and 2015, respectively	16,518					16,518
Shares issued		16
Increase (decrease) during the year, net of tax	411						411
Share-based compensation costs			25,091
Cash dividends paid				(82,735)
Change in long-term intercompany notes	36,320				36,320
Amortization of net actuarial loss, net of tax of ($4,680), ($2,090) and ($3,247) in 2017, 2016 and 2015, respectively	9,910					9,910
Purchase of treasury stock	(6,900)								(6,867)
Excess tax benefits from exercise of stock options
Other				1
Amortization of net actuarial loss, net of tax of ($2,716), ($4,680) and ($2,090) in 2018, 2017 and 2016, respectively	(109,412)				(109,412)
Amortization of prior service costs, net of tax of $1,154, $4 and $25 in 2018, 2017 and 2016, respectively	(41)					(41)
Balance at the end of the year at Dec. 31, 2017	4,027,633	2,631	660,894	5,002,419	(251,909)	(177,371)	104	(429,176)	(1,209,135)
Issuance of common stock under employee stock plans			18,534						6,629
Net income	777,933			777,933
Translation adjustments	(72,112)				(72,112)
Net actuarial gain (loss), net of tax of ($8,384), $17,450 and $12,870 in 2017, 2016 and 2015, respectively	(75,253)					(75,253)
Shares issued		9
Increase (decrease) during the year, net of tax	(104)						(104)
Share-based compensation costs			27,315
Cash dividends paid				(128,911)
Change in long-term intercompany notes	(16,569)				(16,569)
Amortization of net actuarial loss, net of tax of ($4,680), ($2,090) and ($3,247) in 2017, 2016 and 2015, respectively	9,313					9,313
Purchase of treasury stock	(367,700)								(367,678)
Excess tax benefits from exercise of stock options
Other				2,370
Amortization of net actuarial loss, net of tax of ($2,716), ($4,680) and ($2,090) in 2018, 2017 and 2016, respectively	38,452				38,452
Amortization of prior service costs, net of tax of $1,154, $4 and $25 in 2018, 2017 and 2016, respectively	(5,639)					(5,639)
Balance at the end of the year at Dec. 31, 2018	$ 4,241,922	$ 2,640	$ 706,743	$ 5,653,811	$ (302,138)	$ (248,950)	$ 0	$ (551,088)	$ (1,570,184)

Consolidated Statement of Sto_2

Consolidated Statement of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Tax benefit (expense) from investment hedge instruments	$ (12,384)	$ 41,178	$ 6,558
Tax benefit (expense) from change in pension plans	(18,825)	(8,384)	17,450
Tax related to amortization of net actuarial loss	(2,716)	(4,680)	(2,090)
Tax related to amortization of prior service costs	$ 1,154	$ 4	$ 25

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Net income	$ 777,933	$ 681,470	$ 512,158
Adjustments to reconcile net income to total operating activities:
Depreciation and amortization	199,490	183,227	179,716
Deferred income taxes	(73,682)	(91,205)	(5,632)
Share-based compensation expense	27,315	25,091	22,030
Loss (gain) on sale of facilities	127	(1,213)	(743)
Changes in assets and liabilities, net of acquisitions:
Decrease (increase) in receivables	(13,383)	(24,581)	14,773
(Increase) decrease in inventories and other current assets	(59,472)	(6,087)	38,666
Increase in payables, accruals and income taxes	36,547	124,399	2,657
Increase (decrease) in other long-term liabilities	42,814	2,787	(4,298)
Pension contributions	(5,063)	(54,796)	(6,775)
Other, net	(7,108)	(5,833)	4,283
Total operating activities	925,518	833,259	756,835
Investing activities:
Additions to property, plant and equipment	(82,076)	(75,074)	(63,280)
Purchases of businesses, net of cash acquired	(1,129,305)	(556,634)	(391,419)
Proceeds from sale of facilities	2,570	6,290	1,832
Other, net	(1,233)	(399)	500
Total investing activities	(1,210,044)	(625,817)	(452,367)
Financing activities:
Net change in short-term borrowings	258,349	(9,616)	(315,674)
Proceeds from long-term borrowings	560,050	0	820,900
Repayments of long-term borrowings	(305,000)	(270,000)	(48,724)
Repurchases of common stock	(367,678)	(6,867)	(336,140)
Cash dividends paid	(128,911)	(82,735)	(83,267)
Acquisition contingent consideration	(25,500)
Excess tax benefits from share-based payments	0	0	5,343
Proceeds from stock option exercises	30,021	40,047	17,622
Other, net	(8,291)	0	(3,006)
Total financing activities	13,040	(329,171)	57,054
Effect of exchange rate changes on cash and cash equivalents	(20,839)	50,770	(25,268)
(Decrease) increase in cash and cash equivalents	(292,325)	(70,959)	336,254
Cash and cash equivalents:
Beginning of year	646,300	717,259	381,005
End of year	$ 353,975	$ 646,300	$ 717,259

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	1. Significant Accounting Policies Basis of Consolidation The accompanying consolidated financial statements reflect the results of operations, financial position and cash flows of AMETEK, Inc. (the “Company”), and include the accounts of the Company and subsidiaries, after elimination of all intercompany transactions in the consolidation. Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates and assumptions. Prior Period Reclassifications Certain reclassifications and disclosures of prior period amounts have been made to conform to the current year presentation. See Note . Cash Equivalents, Securities and Other Investments All highly liquid investments with maturities of three months or less Accounts Receivable The Company maintains allowances for estimated losses resulting from the inability of specific customers to meet their financial obligations to the Company. A specific allowance for doubtful accounts is recorded against the amount due from these customers. For all other customers, the Company recognizes allowance for doubtful accounts based on the length of time specific receivables are past due based on its historical experience. The allowance for doubtful accounts was $9.3 million and $10.4 million at December 31, 2018 and 2017, respectively. See Note 8. Inventories The Company uses the first-in, first-out (“FIFO”) method of accounting, which approximates current replacement cost, for approximately 85% of its inventories at December 31, 2018. The last-in, first-out (“LIFO”) method of accounting is used to determine cost for the remaining 15% of the Company’s inventory at December 31, 2018. For inventories where cost is determined by the LIFO method, the FIFO value would have been $28.4 million and $22.9 million higher than the LIFO value reported in the consolidated balance sheet at December 31, 2018 and 2017, respectively. The Company provides estimated inventory reserves for slow-moving and obsolete inventory based on current assessments about future demand, market conditions, customers who may be experiencing financial difficulties and related management initiatives. See Note 8. Business Combinations The Company allocates the purchase price of an acquired company, including when applicable, the acquisition date fair value of contingent consideration between tangible and intangible assets acquired and liabilities assumed from the acquired business based on their estimated fair values, with the residual of the purchase price recorded as goodwill. The results of operations of the acquired business are included in the Company’s operating results from the date of acquisition. See Note 6. Property, Plant and Equipment Property, plant and equipment are stated at cost. Expenditures for additions to plant facilities, or that extend their useful lives, are capitalized. The cost of minor tools, jigs and dies, and maintenance and repairs is charged to expense as incurred. Depreciation of plant and equipment is calculated principally on a straight-line basis over the estimated useful lives of the related assets. The range of lives for depreciable assets is generally three to ten years for machinery and equipment, five to 27 years for leasehold improvements and 25 to 50 years for buildings. Depreciation expense was $85.4 million, $82.0 million and $74.8 million for the years ended December 31, 2018, 2017 and 2016, respectively. See Note 8. Goodwill and Other Intangible Assets Goodwill and other intangible assets with indefinite lives, primarily trademarks and trade names, are not amortized; rather, they are tested for impairment at least annually. The Company identifies its reporting units at the component level, which is one level below its operating segments. Generally, goodwill arises from acquisitions of specific operating companies and is assigned to the reporting unit in which a particular operating company resides. The Company’s reporting units are divisions that are one level below its operating segments and for which discrete financial information is prepared and regularly reviewed by segment management. The Company principally relies on a discounted cash flow analysis to determine the fair value of each reporting unit, which considers forecasted cash flows discounted at an appropriate discount rate. The Company believes that market participants would use a discounted cash flow analysis to determine the fair value of its reporting units in a sale transaction. The annual goodwill impairment test requires the Company to make a number of assumptions and estimates concerning future levels of revenue growth, operating margins, depreciation, amortization and working capital requirements, which are based on the Company’s long-range plan and are considered level 3 inputs. The Company’s long-range plan is updated as part of its annual planning process and is reviewed and approved by management. The discount rate is an estimate of the overall after-tax rate of return required by a market participant whose weighted average cost of capital includes both equity and debt, including a risk premium. While the Company uses the best available information to prepare its cash flow and discount rate assumptions, actual future cash flows or market conditions could differ significantly resulting in future impairment charges related to recorded goodwill balances. The impairment test for indefinite-lived intangibles other than goodwill (primarily trademarks and trade names) consists of a comparison of the fair value of the indefinite-lived intangible asset to the carrying value of the asset as of the impairment testing date. The Company estimates the fair value of its indefinite-lived intangibles using the relief from royalty method using level 3 inputs. The fair value derived from the relief from royalty method is measured as the discounted cash flow savings realized from owning such trademarks and trade names and not having to pay a royalty for their use. The Company completed its required annual impairment tests in the fourth quarter of 2018, 2017 and 2016 and determined that the carrying values of the Company’s goodwill were not impaired. The Company completed its required annual impairment tests in the fourth quarter of 2018 and 2017 and determined that the carrying values of the Company’s other intangible assets with indefinite lives were not impaired. The Company completed its required annual impairment tests in the fourth quarter of 2016 and determined that the carrying values of certain of the Company’s trademarks and trade names with indefinite lives were impaired. During 2016, the Company recorded a $13.9 million non-cash impairment charge related to certain of the Company’s trade names. Other intangible assets with finite lives are evaluated for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. The carrying value of other intangible assets with finite lives is considered impaired when the total projected undiscounted cash flows from the asset group are less than the carrying value. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of those assets. Fair value is determined primarily using present value techniques based on projected cash flows from the asset group. Intangible assets, other than goodwill, with definite lives are amortized over their estimated useful lives. Patents and technology are being amortized over useful lives of five to 20 years, with a weighted average life of 16 years. Customer relationships are being amortized over a period of five to 20 years, with a weighted average life of 19 years. Miscellaneous other intangible assets are being amortized over a period of two to 20 years. On a quarterly basis, the Company evaluates the reasonableness of the estimated useful lives of these intangible assets. See Note 7. Financial Instruments and Foreign Currency Translation Assets and liabilities of foreign operations are translated using exchange rates in effect at the balance sheet date and their results of operations are translated using average exchange rates for the year. Certain transactions of the Company and its subsidiaries are denominated in currencies other than their functional currency. Exchange gains and losses from those transactions are included in operating results for the year. The Company makes infrequent use of derivative financial instruments. Forward contracts are entered into from time to time to hedge certain inventory purchases, export sales, debt or foreign currency transactions, thereby minimizing the Company’s exposure to raw material commodity price or foreign currency fluctuation. In instances where transactions are designated as hedges of an underlying item, the gains and losses on those transactions are included in accumulated other comprehensive income within stockholders’ equity to the extent they are effective as hedges. An evaluation of hedge effectiveness is performed by the Company on an ongoing basis and any changes in the hedge are made as appropriate. See Note 5. Revenue Recognition Revenue is derived from sales of products and services. The Company’s products and services are marketed and sold worldwide through two operating groups: EIG and EMG. See Note 15 Descriptive Information about Reportable Segments . See Note 3 for the Company’s revenue recognition policy under ASC 606, adopted January 1, 2018. Related to revenue recognition in 2017 and 2016, the majority of the Company’s revenues on product sales were recognized at a point in time when the customer obtains control of the product. The transfer in control of the product to the customer was typically evidenced by one or more of the following: the customer having legal title to the product, the Company’s present right to payment, the customer’s physical possession of the product, the customer accepting the product, or the customer having the benefits of ownership or risk of loss. For a small percentage of sales where title and risk of loss transfers at the point of delivery, the Company recognized revenue upon delivery to the customer, which is the point that control transferred, assuming all other criteria for revenue recognition were met. Research and Development Research and development costs Shipping and Handling Costs Shipping and handling costs are included in Cost of sales and were $62.7 million in 2018, $53.1 million in 2017 and $47.9 million in 2016. Share-Based Compensation The Company expenses the fair value of share-based awards made under its share-based plans in the consolidated financial statements over their requisite service period of the grants. See Note 11. Income Taxes The Company’s process of providing for income taxes and determining the related balance sheet accounts requires management to assess uncertainties, make judgments regarding outcomes and utilize estimates. The Company conducts a broad range of operations around the world and is therefore subject to complex tax regulations in numerous international taxing jurisdictions, resulting at times in tax audits, disputes and potential litigation, the outcome of which is uncertain. Management must make judgments currently about such uncertainties and determine estimates of the Company’s tax assets and liabilities. To the extent the final outcome differs, future adjustments to the Company’s tax assets and liabilities may be necessary. The Company recognizes interest and penalties accrued related to uncertain tax positions in income tax expense. The Company assesses the realizability of its deferred tax assets, taking into consideration the Company’s forecast of future taxable income, available net operating loss carryforwards and available tax planning strategies that could be implemented to realize the deferred tax assets. Based on this assessment, management must evaluate the need for, and amount of, valuation allowances against the Company’s deferred tax assets. To the extent facts and circumstances change in the future, adjustments to the valuation allowances may be required. See Note 9. Pensions The Company has U.S. and foreign defined benefit and defined contribution pension plans. The most significant elements in determining the Company’s pension income or expense are the assumed pension liability discount rate and the expected return on plan assets. All unrecognized prior service costs, remaining transition obligations or assets and actuarial gains and losses have been recognized, net of tax effects, as a charge to accumulated other comprehensive income in stockholders’ equity and will be amortized as a component of net periodic pension cost. The Company uses a measurement date of December 31 (its fiscal year end) for its U.S. and foreign defined benefit plans. See Note 12. Earnings Per Share The calculation of basic earnings per share is based on the weighted average number of common shares considered outstanding during the periods. The calculation of diluted earnings per share reflects the effect of all potentially dilutive securities (principally outstanding stock options and restricted stock grants). The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows for the years ended December 31: 2018 2017 2016 (In thousands) Weighted average shares: Basic shares 230,823 230,229 232,593 Equity-based compensation plans 1,889 1,616 1,137 Diluted shares 232,712 231,845 233,730

Recent Accounting Pronouncement

Recent Accounting Pronouncements	12 Months Ended
	Dec. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	2. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09 (Topic 606), Revenue from Contracts with Customers (“ASU 2014-09”) and modified the standard thereafter within Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”). ASU 2014-09 established a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and superseded most of the existing revenue recognition guidance. The Company adopted ASU 2014-09 effective January 1, 2018 using the modified retrospective method. The adoption of ASU 2014-09 did not have a significant impact on the Company’s consolidated results of operations, financial position and cash flows. See Note 3. In February 2016, the FASB issued ASU No. 2016-02, Leases (“ASU 2016-02”) and modified the standard in July 2018 with ASU No. 2018-11, Leases (“ASU 2018-11”). The new standard establishes a right-of-use model that requires a lessee to record a right-of-use asset and a lease liability on the balance sheet for all leases. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018. The Company adopted ASU 2016-02 on January 1, 2019. ASU 2016-02 and ASU 2018-11 include transitional guidance, that allows for a modified retrospective approach with “optional transition relief”, which the Company expects to elect. The Company expects the adoption of ASU 2016-02 to have a material effect on our balance sheet. The adoption of ASU 2016-02 is not expected to have a significant impact on the Company’s consolidated results of operations or cash flows. The Company is primarily a lessee. While we continue to design internal controls and assess all the effects of adoption, the Company currently believes the most significant effects to be the recognition of new right-of-use assets and lease liabilities on our balance sheet related to real estate, machinery and equipment operating leases and providing significant new disclosures about our leasing activities. In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business In March 2017, the FASB issued ASU 2017-07, which changes how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. ASU 2017-07 requires employers to present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs. All other components of the net periodic benefit cost are presented outside of operating income. The Company retrospectively adopted ASU 2017-07 effective January 1, 2018. For twelve months ended December 31, 2017 and 2016, the consolidated statement of income was restated to increase Cost of sales by $9.9 million and $10.3 million, increase Selling, general and administrative expenses by $1.5 million and $0.6 million, and decrease Other expense, net by $11.5 million and $10.9 million, respectively, for net periodic benefit income components other than service cost. For the twelve months ended December 31, 2017 and 2016, the $11.5 million and $10.9 million, respectively, of net periodic benefit income components other than service cost were originally reported in operating income as follows: $5.8 million and $6.6 million in Electronic Instruments (“EIG”), $4.1 million and $3.6 million in Electromechanical (“EMG”), and $1.5 million and $0.6 million in Corporate administrative expense, respectively. The adoption of ASU 2017-07 did not have a significant impact on the Company’s consolidated results of operations, financial position, cash flows and financial statement disclosures. In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting In February 2018, the FASB issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (“ASU 2018-13”), which changes the fair value measurement disclosure requirements of ASC Topic 820, Fair Value Measurement (“ASC 820”), by eliminating, modifying and adding to those requirements. ASU 2018-13 also modifies the disclosure objective paragraphs of ASC 820 to eliminate (1) “at a minimum” from the phrase “an entity shall disclose at a minimum” and (2) other similar “open ended” disclosure requirements to promote the appropriate exercise of discretion by entities. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods therein. Early adoption is permitted. The Company has not determined the impact ASU 2018-13 may have on the Company’s consolidated financial statement disclosures. In August 2018, the FASB issued ASU No. 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (“ASU 2018-14”), which changes the disclosure requirements of ASC Topic 715, Compensation – Retirement Benefits , by eliminating, modifying and adding to those requirements. ASU 2018-14 is effective for fiscal years beginning after December 15, 2020. Early adoption is permitted and the amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company has not determined the impact ASU 2018-14 may have on the Company’s consolidated financial statement disclosures. In August 2018, the FASB issued ASU No. 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (“ASU 2018-15”), that requires implementation costs incurred by customers in cloud computing arrangements to be deferred and recognized over the term of the arrangement, if those costs would be capitalized by the customer in a software licensing arrangement under the internal-use software guidance in ASC Topic 350, Intangibles – Goodwill and Other . ASU 2018-15 requires a customer to disclose the nature of its hosting arrangements that are service contracts and provide disclosures as if the deferred implementation costs were a separate, major depreciable asset class. ASU 2018-15 is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted. The Company has not determined the impact ASU 2018-15 may have on the Company’s consolidated results of operations, financial position, cash flows and financial statement disclosures.

Revenues

Revenues	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	3. Revenues As discussed in Note 2, the Company adopted ASC 606 as of January 1, 2018 using the modified retrospective method. The cumulative adjustment made to the January 1, 2018 consolidated balance sheet for the adoption of ASC 606 was to increase Retained earnings by $4.2 million, increase Total assets by $7.9 million and increase Total liabilities by $3.7 million. For the year ended December 31, 2018, the effect of the changes in all financial statement line items impacted by ASC 606 was immaterial from the amount that would have been reported under the previous guidance. Under ASC 606, the Company determined that revenues from certain of its customer contracts met the criteria of satisfying its performance obligations over time, primarily in the areas of the manufacture of custom-made equipment and for service repairs of customer-owned equipment. Prior to the adoption of the new standard, these revenues were recorded upon shipment or, in the case of those sales where title and risk of loss passes at the point of delivery, the Company recognized revenue upon delivery to the customer. Recognizing revenue over time for custom-manufactured equipment is based on the Company’s judgment that, in certain contracts, the product does not have an alternative use and the Company has an enforceable right to payment for performance completed to date. This change in revenue recognition accelerated the revenue recognition and costs on the impacted contracts. Applying the practical expedient available under ASC 606, the Company recognizes incremental cost of obtaining contracts as an expense when incurred if the amortization period of the contract cost assets that the Company would have otherwise recognized is one year or less. These costs are included in Selling, general and administrative expenses in the consolidated statement of income. Revenues associated with repairs of customer-owned assets were previously recorded upon completion and shipment of the repaired equipment to the customer. Under ASC 606, if the Company’s performance enhances an asset that the customer controls as the asset is enhanced, revenue must be recognized over time. The revenue associated with the repair of a customer-owned asset meets this criterion. The determination of the revenue to be recognized in each period for performance obligations satisfied over time is based on the input method. The Company recognizes revenue over time as it performs on these contracts because the transfer of control to the customer occurs over time. Revenue is recognized based on the extent of progress towards completion of the performance obligation. The Company generally uses the total cost-to-cost input method of progress because it best depicts the transfer of control to the customer that occurs as costs are incurred. Under the cost-to-cost method, the extent of progress towards completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. On certain contracts, labor hours are used as the measure of progress when it is determined to be a better depiction of the transfer of control to the customer due to the timing and pattern of labor hours incurred. Performance obligations also include post-delivery service, software as a service, managed services, installation and training. Post-delivery service revenues are recognized over the contract term. Installation and training revenues are recognized over the period the service is provided. Warranty terms in customer contracts can also be considered separate performance obligations if the warranty provides services beyond assurance that a product complies with agreed-upon specification or if a warranty can be purchased separately. The Company does not incur significant obligations for customer returns and refunds. The Company has certain contracts with variable consideration in the form of volume discounts, rebates and early payment options, which may affect the transaction price used as the basis for revenue recognition. In these contracts, the amount of the variable consideration is allocated among the various performance obligations in the customer contract based on the relative standalone selling price of each performance obligation to the total standalone value of all the performance obligations. Payment terms generally begin upon shipment of the product. The Company does have contracts with multiple billing terms that are all due within one year from when the product is delivered. No significant financing component exists. Payment terms are generally 30-60 days from the time of shipment or customer acceptance, but terms can be shorter or longer, not exceeding one year. For customer contracts that have revenue recognized over time, revenue is generally recognized prior to a payment being due from the customer. In such cases, the Company recognizes a contract asset at the time the revenue is recognized. When payment becomes due based on the contract terms, the Company reduces the contract asset and records a receivable. In contracts with billing milestones or in other instances with a long production cycle or concerns about credit, customer advance payments are received. The Company may receive a payment in excess of revenue recognized to that date. In these circumstances, a contract liability is recorded. Contract liabilities are derecognized when the performance obligations are satisfied and revenue is recognized. The outstanding contract asset and (liability) accounts were as follows: 2018 (In thousands) Contract assets – January 1, 2018 $ 32,658 Contract assets – December 31, 2018 58,266 Change in contract assets – increase (decrease) 25,608 Contract liabilities – January 1, 2018 117,058 Contract liabilities – December 31, 2018 146,162 Change in contract liabilities – (increase) decrease (29,104 ) Net Change $ (3,496 ) The net change was primarily driven by higher acquired contract assets compared to acquired contract liabilities related to the 2018 acquisitions. In 2018, the Company recognized revenue of $97 million that was previously included in the beginning balance of contract liabilities. Contract assets are reported as a component of Other current assets in the consolidated balance sheet. At December 31, 2018, $8.9 million of Customer advanced payments (contract liabilities) were recorded in Other long-term liabilities in the consolidated balance sheet. In conjunction with the January 1, 2018 adoption of ASC 606, in the consolidated balance sheet, approximately $14 million was reclassified to contract assets that was previously reported in Other current assets at December 31, 2017. Also, at January 1, 2018, in the consolidated balance sheet, approximately $114 million was reclassified to Customer advanced payments that was previously reported in Accounts payable of approximately $76 million, Accrued liabilities of approximately $26 million and other of approximately $12 million at December 31, 2017. The Company applied the practical expedient to not disclose the value of remaining performance obligations for contracts with an original expected term of one year or less. Remaining performance obligations exceeding one year as of December 31, 2018 were $187.2 million. Remaining performance obligations represent the transaction price of firm, noncancelable orders, with expected delivery dates to customers greater than one year from December 31, 2018, for which the performance obligation is unsatisfied or partially unsatisfied. These performance obligations will be substantially satisfied within two to three years. Geographic Areas Information about the Company’s operations in different geographic areas for the year ended December 31, 2018 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2018 EIG EMG Total (In thousands) United States $ 1,446,974 $ 950,358 $ 2,397,332 International (1) United Kingdom 61,513 135,077 196,590 European Union countries 389,032 399,547 788,579 Asia 780,135 205,047 985,182 Other foreign countries 351,305 126,884 478,189 Total international 1,581,985 866,555 2,448,540 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872 (1) Includes U.S. export sales of $1,269.4 million. Information about the Company’s operations in different geographic areas for the year ended December 31, 2017 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2017 EIG EMG Total (In thousands) United States $ 1,284,570 $ 801,610 $ 2,086,180 International (1) United Kingdom 59,319 127,215 186,534 European Union countries 327,970 364,146 692,116 Asia 685,070 194,356 879,426 Other foreign countries 333,625 122,289 455,914 Total international 1,405,984 808,006 2,213,990 Consolidated net sales $ 2,690,554 $ 1,609,616 $ 4,300,170 (1) Includes U.S. export sales of $1,142.3 million. Information about the Company’s operations in different geographic areas for the year ended December 31, 2016 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2016 EIG EMG Total (In thousands) United States $ 1,110,795 $ 718,546 $ 1,829,341 International (1) United Kingdom 50,880 137,820 188,700 European Union countries 287,391 331,747 619,138 Asia 611,819 174,049 785,868 Other foreign countries 299,396 117,644 417,040 Total international 1,249,486 761,260 2,010,746 Consolidated net sales $ 2,360,281 $ 1,479,806 $ 3,840,087 (1) Includes U.S. export sales of $1,036.0 million Major Products and Services The Company’s major products and services in the reportable segments were as follows for the year ended December 31: 2018 EIG EMG Total (In thousands) Process and analytical instrumentation $ 2,120,448 $ — $ 2,120,448 Aerospace and power 908,511 456,517 1,365,028 Automation and engineered solutions — 1,360,396 1,360,396 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872 Timing of Revenue Recognition The Company’s timing of revenue recognition was as follows for the year ended December 31: 2018 EIG EMG Total (In thousands) Products transferred at a point in time $ 2,533,718 $ 1,690,124 $ 4,223,842 Products and services transferred over time 495,241 126,789 622,030 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872 Product Warranties The Company provides limited warranties in connection with the sale of its products. The warranty periods for products sold vary among the Company’s operations, but the majority do not exceed one year. The Company calculates its warranty expense provision based on its historical warranty experience and adjustments are made periodically to reflect actual warranty expenses. Product warranty obligations are reported as a component of Accrued liabilities in the consolidated balance sheet. Changes in the accrued product warranty obligation were as follows: 2018 2017 2016 (In thousands) Balance at the beginning of the year $ 22,872 $ 22,007 $ 22,761 Accruals for warranties issued during the year 13,897 15,951 16,046 Settlements made during the year (14,509 ) (17,854 ) (17,732 ) Warranty accruals related to acquired businesses and other during the year 1,222 2,768 932 Balance at the end of the year $ 23,482 $ 22,872 $ 22,007

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. See Note 6 for discussion of acquisition date fair value of contingent payment liability. The Company utilizes a valuation hierarchy for disclosure of the inputs to the valuations used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s own assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The following table provides the Company’s assets that are measured at fair value on a recurring basis, consistent with the fair value hierarchy, at December 31: 2018 2017 Fair Value Fair Value (In thousands) Fixed-income investments $ 7,655 $ 8,060 The fair value of fixed-income investments, which are valued as level 1 investments, was based on quoted market prices. The fixed-income investments are shown as a component of long-term assets in the consolidated balance sheet. For the years ended December 31, 2018 and 2017, gains and losses on the investments noted above were not significant. No transfers between level 1 and level 2 investments occurred during the years ended December 31, 2018 and 2017. Financial Instruments Cash, cash equivalents and fixed-income investments are recorded at fair value at December 31, 2018 and 2017 in the accompanying consolidated balance sheet. The following table provides the estimated fair values of the Company’s financial instrument liabilities, for which fair value is measured for disclosure purposes only, compared to the recorded amounts at December : 2018 2017 Recorded Amount Fair Value Recorded Amount Fair Value (In thousands) Long-term debt, net (including current portion) $ (2,378,809 ) $ (2,368,676 ) $ (2,174,289 ) $ (2,210,466 ) The fair value of short-term borrowings, net approximates the carrying value. Short-term borrowings, net are valued as level 2 liabilities as they are corroborated by observable market data. The Company’s long-term debt, net is all privately held with no public market for this debt, therefore, the fair value of long-term debt, net was computed based on comparable current market data for similar debt instruments and is considered to be a level 3 liability. See Note 10 for long-term debt principal amounts, interest rates and maturities. Foreign Currency At December 31, 2018, the Company had a Canadian dollar forward contract for a total notional value of 30.0 million Canadian dollars ($1.0 million fair value unrealized loss at December 31, 2018) outstanding. At December 31, 2017, the Company had a Canadian dollar forward contract for a total notional value of 83.0 million Canadian dollars ($1.5 million fair value unrealized gain at December 31, 2017) which settled in first quarter of 2018. For the year ended December 31, 2018 and 2017, realized gains and losses on foreign currency forward contracts were not significant. The Company does not typically designate its foreign currency forward contracts as accounting hedges.

Hedging Activities

Hedging Activities	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedging Activities	5. Hedging Activities The Company has designated certain foreign-currency-denominated long-term borrowings as hedges of the net investment in certain foreign operations. As of December 31, 2018 and 2017, these net investment hedges included British-pound- and Euro-denominated long-term debt. These borrowings were designed to create net investment hedges in each of the designated foreign subsidiaries. The Company designated the British-pound- and Euro-denominated loans referred to above as hedging instruments to offset translation gains or losses on the net investment due to changes in the British pound and Euro exchange rates. These net investment hedges are evidenced by management’s contemporaneous documentation supporting the hedge designation. Any gain or loss on the hedging instruments (the debt) following hedge designation is reported in accumulated other comprehensive income in the same manner as the translation adjustment on the hedged investment based on changes in the spot rate, which is used to measure hedge effectiveness. At December 31, 2018 and 2017, the Company had $389.2 million and $412.4 million, respectively, of British-pound-denominated loans, which were designated as a hedge against the net investment in British pound functional currency foreign subsidiaries. At December 31, 2018 and 2017, the Company had $658.7 million and $601.0 million, respectively, in Euro-denominated loans, which were designated as a hedge against the net investment in Euro functional currency foreign subsidiaries. As a result of the British-pound- and Euro-denominated loans being designated and 100% effective as net investment hedges, $50.8 million of pre-tax currency remeasurement gains and $109.4 million of pre-tax currency remeasurement losses have been included in the foreign currency translation component of other comprehensive income for the years ended December 31, 2018 and 2017, respectively.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions	6. Acquisitions The Company spent $ 1,129.3 The following table represents the allocation of the aggregate purchase price for the net assets of the 2018 acquisitions based on their estimated fair values at acquisition (in millions): Telular Other Total Property, plant and equipment $ 54.7 $ 19.9 $ 74.6 Goodwill 214.7 320.5 535.2 Other intangible assets 265.2 257.6 522.8 Long-term liabilities — (7.9 ) (7.9 ) Deferred income taxes (28.0 ) (42.0 ) (70.0 ) Net working capital and other (1) 16.1 58.5 74.6 Total cash paid $ 522.7 $ 606.6 $ 1,129.3 (1) Includes $51.0 million in accounts receivable, whose fair value, contractual cash flows and expected cash flows are approximately equal. The amount allocated to goodwill is reflective of the benefits the Company expects to realize from the 2018 acquisitions as follows: FMH’s products and solutions further broaden the Company’s differentiated product offerings in the aerospace and defense markets. SoundCom expands Rauland’s presence in the healthcare and education markets in the Midwest while providing customers with expanded value-added solutions and services. Motec’s vision systems complement the Company’s existing instrumentation businesses by expanding its portfolio of solutions to its customers. Forza provides the Vision Research business with custom sensor design and production capability, allowing for accelerated development of next generation sensor technology for use across the Company’s market leading, high-speed cameras. Telular’s end-to-end solutions include purpose-built hardware, proprietary software and wireless connectivity services to enhance the efficiency and safety of critical assets. The combination of Telular’s IoT capabilities and the Company’s highly differentiated measurement technology provides additional growth opportunities for its businesses. Spectro Scientific’s differentiated solutions serve an increasing need for predictive maintenance in a broad and growing set of end markets, including military and defense, process, power generation and transportation. Spectro Scientific expands the Company’s strategy to integrate instrumentation data with cloud-based software and analytics. The Company expects approximately $94 million of the goodwill recorded relating to the 2018 acquisitions will be tax deductible in future years. At December 31, 2018, the purchase price allocated to other intangible assets of $522.8 million consists of $82.3 million of indefinite-lived intangible trade names, which are not subject to amortization. The remaining $440.5 million of other intangible assets consists of $359.8 million customer relationships, which are being amortized over a period of 10 to 20 years and $80.7 million of purchased technology, which is being amortized over a period of nine to 18 years. Amortization expense for each of the next five years for the 2018 acquisitions is expected to approximate $26.9 million per year. The Company is in the process of finalizing the measurement of certain tangible and intangible assets and liabilities for its fourth quarter of 2018 acquisitions of Forza, Telular and Spectro Scientific including inventory, property, plant and equipment, goodwill, trade names, customer relationships and purchased technology and the accounting for income taxes. The Company is in the process of finalizing the accounting for income taxes for its April 2018 acquisition of SoundCom and its June 2018 acquisition of Motec. The 2018 acquisitions had an immaterial impact on reported net sales, net income and diluted earnings per share for the year ended December 31, 2018. Had the 2018 acquisitions been made at the beginning of 2018 or 2017, unaudited pro forma net sales, net income and diluted earnings per share for the years ended December 31, 2018 and 2017, respectively, would not have been materially different than the amounts reported. In 2017, the Company spent $ 556.6 The Rauland acquisition included a potential $30 million contingent payment due upon Rauland achieving a certain cumulative revenue target over the period October 1, 2016 to September 30, 2018. At the acquisition date, the estimated fair value of the contingent payment liability was $25.5 million, which was based on a probabilistic approach using level 3 inputs. At September 30, 2018, Rauland achieved the target. The $30.0 million contingent payment was made in the fourth quarter of 2018. In 2016, the Company spent $ 391.4

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	7. Goodwill and Other Intangible Assets The changes in the carrying amounts of goodwill by segment were as follows: EIG EMG Total (In millions) Balance at December 31, 2016 $ 1,817.0 $ 1,002.0 $ 2,819.0 Goodwill acquired 225.6 — 225.6 Purchase price allocation adjustments and other 0.5 0.6 1.1 Foreign currency translation adjustments 33.9 36.0 69.9 Balance at December 31, 2017 2,077.0 1,038.6 3,115.6 Goodwill acquired 396.2 139.0 535.2 Purchase price allocation adjustments and other (1.6 ) — (1.6 ) Foreign currency translation adjustments (19.6 ) (17.6 ) (37.2 ) Balance at December 31, 2018 $ 2,452.0 $ 1,160.0 $ 3,612.0 Other intangible assets were as follows at December 31: 2018 2017 (In thousands) Definite-lived intangible assets (subject to amortization): Patents $ 51,348 $ 52,548 Purchased technology 405,204 328,301 Customer lists 1,966,709 1,621,652 2,423,261 2,002,501 Accumulated amortization: Patents (37,768 ) (36,998 ) Purchased technology (127,363 ) (110,298 ) Customer lists (538,504 ) (450,814 ) (703,635 ) (598,110 ) Net intangible assets subject to amortization 1,719,626 1,404,391 Indefinite-lived intangible assets (not subject to amortization): Trademarks and trade names 684,145 608,974 $ 2,403,771 $ 2,013,365 In the fourth quarter of 2016, the Company completed its required annual impairment tests and determined that the carrying values of certain of the Company’s trademarks and trade names with indefinite lives were impaired. During 2016, the Company recorded, in Cost of sales, a $13.9 million non-cash impairment charge related to certain of the Company’s trade names, of which $9.2 million impacted EIG and $4.7 million impacted EMG. See Note 1 for further descriptions of the Company’s impairment testing. Amortization expense was $114.1 million, $101.2 million and $104.9 million (including impairment of $13.9 million) for the years ended December 31, 2018, 2017 and 2016, respectively. Amortization expense for each of the next five years is expected to approximate $ 133

Other Consolidated Balance Shee

Other Consolidated Balance Sheet Information	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Other Consolidated Balance Sheet Information	8. Other Consolidated Balance Sheet Information December 31, 2018 2017 (In thousands) INVENTORIES, NET Finished goods and parts $ 107,289 $ 84,789 Work in process 117,899 107,362 Raw materials and purchased parts 399,556 348,353 $ 624,744 $ 540,504 PROPERTY, PLANT AND EQUIPMENT, NET Land $ 41,751 $ 42,851 Buildings 315,250 295,023 Machinery and equipment 1,022,362 923,394 1,379,363 1,261,268 Less: Accumulated depreciation (825,233 ) (767,972 ) $ 554,130 $ 493,296 ACCRUED LIABILITIES Employee compensation and benefits $ 150,006 $ 151,435 Product warranty obligation 23,482 22,872 Restructuring 24,149 30,046 Contingent purchase price 3,000 25,500 Other 113,794 128,698 $ 314,431 $ 358,551 2018 2017 2016 (In thousands) ALLOWANCES FOR POSSIBLE LOSSES ON ACCOUNTS RECEIVABLE Balance at the beginning of the year $ 10,401 $ 10,257 $ 8,555 Additions charged to expense 1,667 2,800 4,124 Write-offs (2,335 ) (3,208 ) (2,304 ) Foreign currency translation adjustments and other (463 ) 552 (118 ) Balance at the end of the year $ 9,270 $ 10,401 $ 10,257

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	9. Income Taxes The components of income before income taxes and the details of the provision for income taxes were as follows for the years ended December 31: 2018 2017 2016 (In thousands) Income before income taxes: Domestic $ 555,077 $ 447,853 $ 397,215 Foreign 432,668 348,876 295,888 Total $ 987,745 $ 796,729 $ 693,103 Provision for income taxes: Current: Federal $ 204,712 $ 127,874 $ 116,898 Foreign 51,686 71,846 63,170 State 27,096 6,744 6,509 Total current 283,494 206,464 186,577 Deferred: Federal (62,095 ) (97,465 ) 5,273 Foreign (3,872 ) 6,204 (8,434 ) State (7,715 ) 56 (2,471 ) Total deferred (73,682 ) (91,205 ) (5,632 ) Total provision $ 209,812 $ 115,259 $ 180,945 Significant components of the deferred tax (asset) liability were as follows at December 31: 2018 2017 (In thousands) Noncurrent deferred tax (asset) liability: Differences in basis of property and accelerated depreciation $ 46,103 $ 39,816 Reserves not currently deductible (41,159 ) (42,966 ) Pensions 29,624 11,452 Differences in basis of intangible assets and accelerated amortization 554,597 455,690 Net operating loss carryforwards (52,142 ) (10,376 ) Share-based compensation (15,399 ) (13,434 ) Unremitted earnings 12,598 84,356 Other (24,492 ) (23,176 ) 509,730 501,362 Less: Valuation allowance 8,634 3,100 518,364 504,462 Portion included in noncurrent assets 9,972 8,064 Gross noncurrent deferred tax liability 528,336 512,526 Net deferred tax liability $ 528,336 $ 512,526 The Company’s effective tax rate reconciles to the U.S. Federal statutory rate as follows for the years ended December 31: 2018 2017 2016 U.S. Federal statutory rate 21.0 % 35.0 % 35.0 % State income taxes, net of federal income tax benefit 1.2 0.4 0.6 Foreign operations, net (0.1 ) (6.8 ) (7.1 ) U.S. Benefits for Manufacturing, Export and credits (1.8 ) (1.8 ) (2.4 ) Uncertain Tax Items 1.7 0.4 (0.4 ) Stock compensation (0.5 ) (1.5 ) 0.2 Net deferred tax revaluation (0.1 ) (23.3 ) — US Tax on Foreign Earnings (0.1 ) 11.9 — Other (0.1 ) 0.2 0.2 Consolidated effective tax rate 21.2 % 14.5 % 26.1 % On December 22, 2017, the U.S. enacted the Tax Cuts and Jobs Act (the “Tax Act”). The Tax Act, which is also commonly referred to as “U.S. tax reform,” significantly changes U.S. corporate income tax laws by, among other things, reducing the U.S. corporate income tax rate to 21% starting in 2018 and creating a territorial tax system with a one-time mandatory tax on previously deferred foreign earnings of U.S. subsidiaries. As a result, in the fourth quarter of 2017, the Company recorded a net benefit of $91.6 million in the consolidated statement of income as a component of Provision for income taxes. The $91.6 million net benefit consisted of a $185.8 million benefit resulting from the remeasurement of the Company’s net deferred tax liabilities in the U.S. based on the new lower corporate income tax rate and $94.2 million expense mostly relating to the one-time mandatory tax on previously deferred earnings of certain non-U.S. subsidiaries that are owned either wholly or partially by a U.S. subsidiary of the Company as discussed further below. During 2018 the Company finalized the calculations of the Tax Act transitional tax items and reported a favorable $11.8 million tax benefit of which $10.4 million relates to the one-time mandatory deemed repatriation tax and $1.4 million relates to the remeasurement of the net deferred tax liabilities in the U.S. for the impact of the lower tax rates. The Company elected to pay the cash tax cost of the one-time mandatory tax on previously deferred earnings of non-U.S. subsidiaries over an eight-year period. As of December 31, 2018, the Company has a remaining cash tax obligation of $66.8 million of which $5.9 million is payable within the next twelve months. The Company has evaluated the impact of the global intangible low-taxed income (“GILTI”) section of the Tax Act and has made a tax accounting policy election to record the annual tax cost of GILTI as a current period expense when incurred and, as such, will not be measuring an impact of GILTI in its determination of deferred taxes. As a result of the one-time mandatory deemed repatriation and the taxable inclusions under the GILTI provisions of the Tax Act, the Company has approximately $555 million in previously taxed income (“PTI”) as of December 31, 2018 which can be repatriated without incremental U.S. Federal tax. The Company intends to reinvest its earnings indefinitely in operations outside the United States except to the extent of the PTI. As of December, 31 2018 and 2017, the Company recorded deferred income taxes totaling $12.6 million and $13.3 million respectively in state income and foreign withholding taxes expected to be incurred when the cash amounts related to the mandatory tax are ultimately repatriated to the U.S. The Company is acquisitive and at times acquires entities with tax attributes (net operating losses or tax credits) that carry over to post-acquisition tax periods of the Company. At December 31, 2018, the Company had tax effected benefits of $52.1 million related to net operating loss carryforwards, which will be available to offset future income taxes payable, subject to certain annual or other limitations based on foreign and U.S. tax laws. This amount includes net operating loss carryforwards of $34.4 million for federal income tax purposes with no valuation allowance, $16.6 million for state income tax purposes with a valuation allowance of $0.9 and $1.1 million for foreign income tax purposes with a valuation allowance of $1.1 million. These net operating loss carryforwards, if not used, will expire between 2019 and 2038. At December 31, 2018, the Company had tax effected benefits of $7.9 million related to tax credit carryforwards, which will be available to offset future income taxes payable, subject to certain annual or other limitations based on foreign and U.S. tax laws. This amount includes tax credit carryforwards of $2.1 million for federal income tax purposes with a valuation allowance of $1.6 million, $5.8 million for state income tax purposes with a valuation allowance of $1.5 million, and no remaining credit carryforwards for foreign income tax purposes. These tax credit carryforwards, if not used, will expire between 2019 and 2038. The Company maintains a valuation allowance to reduce certain deferred tax assets to amounts that are more likely than not to be realized. This allowance primarily relates to the deferred tax assets established for state and foreign net operating loss carryforwards and tax credits. In 2018, the Company recorded an increase of $5.5 million in the valuation allowance of which $2.0 million relates to acquired state loss and credit carryforwards that are not expected to be utilized and $3.5 million for non-deductible interest expense in states that conform to the Tax Act. There are no material uncertainties related to the realization of any deferred tax assets and their realization does not materially depend on specific tax planning strategies being implemented or changes in future levels of expected profits. At December 31, 2018, the Company had gross unrecognized tax benefits of $119.3 million, of which $73.1 million, if recognized, would impact the effective tax rate. At December 31, 2017, the Company had gross unrecognized tax benefits of $60.3 million, of which $51.7 million, if recognized, would impact the effective tax rate. At December 31, 2018 and 2017, the Company reported $14.0 million and $9.7 million, respectively, related to interest and penalty exposure as accrued income tax expense in the consolidated balance sheet. During 2018 and 2017, the Company recognized a net expense of $8.9 million and $0.9 million, and during 2016, the Company recognized a net benefit of $1.8 million, respectively, for interest and penalties related to uncertain tax positions in the consolidated statement of income as a component of income tax expense. Approximately 60% of the Company’s overall tax liability is incurred in the United States. The Company files income tax returns in various other state and foreign tax jurisdictions, in some cases for multiple legal entities per jurisdiction. Generally, the Company has open tax years subject to tax audit on average of between three and six years in these jurisdictions. At December 31, 2018, there were no tax years currently under examination by the Internal Revenue Service (“IRS”) related to the U.S. consolidated tax group, although a separate examination of a pre-acquisition net operating loss is ongoing related to a recently acquired company for which no material liability is expected. The Company has not materially extended any other statutes of limitation for any significant location and has reviewed and accrued for, where necessary, tax liabilities for open periods including state and foreign jurisdictions that remain subject to examination. There have been no penalties asserted or imposed by the IRS related to substantial understatement of income, gross valuation misstatement or failure to disclose a listed or reportable transaction. During 2018, the Company added $81.6 million of tax, interest and penalties related to identified uncertain tax positions and reversed $18.4 million of tax and interest related to statute expirations and settlement of prior uncertain positions. During 2017, the Company added $15.4 million of tax, interest and penalties to identified uncertain tax positions and reversed $12.1 million of tax and interest related to statute expirations. The following is a reconciliation of the liability for uncertain tax positions at December : 2018 2017 2016 (In millions) Balance at the beginning of the year $ 60.3 $ 57.9 $ 63.8 Additions for tax positions related to the current year 21.8 10.0 5.5 Additions for tax positions of prior years 53.5 3.1 1.5 Reductions for tax positions of prior years (3.9 ) (2.8 ) (3.6 ) Reductions related to settlements with taxing authorities — — (3.4 ) Reductions due to statute expirations (12.4 ) (7.9 ) (5.9 ) Balance at the end of the year $ 119.3 $ 60.3 $ 57.9 In 2018, the additions above primarily reflect the increase in tax liabilities for uncertain tax positions related to certain higher transfer pricing risks for hard to value intangible assets that may more likely be asserted following U.S. tax reform as taxpayers react and adapt to new tax planning initiatives; the reductions above primarily relate to statute expirations. At December 31, 2018, tax, interest and penalties of $131.7 million were classified as a noncurrent liability. The net change in uncertain tax positions for the year ended December 31, 2018 resulted in an increase to income tax expense of $23.8 million, which reflects the increase of $59 million in gross uncertain tax positions less offsetting benefits reported as decreases to deferred tax liabilities or increases in long-term taxes receivable.

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	10. Debt Long-term debt, net consisted of the following at December 31: 2018 2017 (In thousands) U.S. dollar 6.35% senior notes due July 2018 $ — $ 80,000 U.S. dollar 7.08% senior notes due September 2018 — 160,000 U.S. dollar 7.18% senior notes due December 2018 — 65,000 U.S. dollar 6.30% senior notes due December 2019 100,000 100,000 U.S. dollar 3.73% senior notes due September 2024 300,000 300,000 U.S. dollar 3.91% senior notes due June 2025 50,000 50,000 U.S. dollar 3.96% senior notes due August 2025 100,000 100,000 U.S. dollar 4.18% senior notes due December 2025 275,000 — U.S. dollar 3.83% senior notes due September 2026 100,000 100,000 U.S. dollar 4.32% senior notes due December 2027 150,000 — U.S. dollar 4.37% senior notes due December 2028 50,000 — U.S. dollar 3.98% senior notes due September 2029 100,000 100,000 U.S. dollar 4.45% senior notes due August 2035 50,000 50,000 British pound 4.68% senior note due September 2020 102,082 108,180 British pound 2.59% senior note due November 2028 191,405 202,840 British pound 2.70% senior note due November 2031 95,700 101,420 Euro 1.34% senior notes due October 2026 343,666 360,620 Euro 1.71% senior notes due December 2027 85,916 — Euro 1.53% senior notes due October 2028 229,108 240,414 Swiss franc 2.44% senior note due December 2021 55,932 56,452 Revolving credit facility borrowings 260,000 — Other, principally foreign 2,278 4,589 Less: Debt issuance costs (8,374 ) (5,226 ) Total debt, net 2,632,713 2,174,289 Less: Current portion, net (358,876 ) (308,123 ) Total long-term debt, net $ 2,273,837 $ 1,866,166 Maturities of long-term debt borrowings outstanding at December 31, 2018 were as follows: $102.1 million in 2020; $55.9 million in 2021; none in 2022; none in 2023; $300.0 million in 2024; and $1,815.8 million in 2025 and thereafter. In the fourth quarter of 2018, the Company paid in full, at maturity, $65 million in aggregate principal amount of 7.18% private placement senior notes. In the third quarter of 2018, the Company paid in full, at maturity, $80 million in aggregate principal amount of 6.35% private placement senior notes and $160 million in aggregate principal amount of 7.08% private placement senior notes. In the fourth quarter of 2017, the Company paid in full, at maturity, $270 million in aggregate principal amount of 6.20% private placement senior notes. In December 2018, the Company completed a private placement agreement to sell $575 million and 75 million Euros in senior notes to a group of institutional investors (the “2018 Private Placement”). There are two funding dates under the 2018 Private Placement. The first funding occurred in December 2018 for $475 million and 75 million Euros ($85.1 million). The second funding was in January 2019 for $100 million. The 2018 Private Placement senior notes carry a weighted average interest rate of 3.93% and are subject to certain customary covenants, including financial covenants that, among other things, require the Company to maintain certain debt-to-EBITDA (earnings before interest, income taxes, depreciation and amortization) and interest coverage ratios. The proceeds from the first funding of the 2018 Private Placement were used to pay down domestic borrowings under the Company’s revolving credit facility. The proceeds from the second funding of the 2018 Private Placement will provide the Company with additional financial flexibility to support its growth plans, including its acquisition strategy. In December 2007, the Company issued $100 million in aggregate principal amount of 6.30% private placement senior notes due December 2019. In July 2008, the Company issued $80 million in aggregate principal amount of 6.35% private placement senior notes due July 2018 (paid in full, at maturity, as previously noted). In September 2008, the Company issued $160 million in aggregate principal amount of 7.08% private placement senior notes due September 2018 (paid in full, at maturity, as previously noted). In December 2008, the Company issued $65 million in aggregate principal amount of 7.18% private placement senior notes due December 2018 (paid in full, at maturity, as previously noted). In September 2014, the Company issued $300 million in aggregate principal amount of 3.73% senior notes due September 2024, $100 million in aggregate principal amount of 3.83% senior notes due September 2026 and $100 million in aggregate principal amount of 3.98% senior notes due September 2029. In June 2015, the Company issued $50 million in aggregate principal amount of 3.91% senior notes due June 2025. In August 2015, the Company issued $100 million in aggregate principal amount of 3.96% senior notes due August 2025 and $50 million in aggregate principal amount of 4.45% senior notes due August 2035. In September 2010, the Company issued an 80 million British pound ($102.1 million at December 31, 2018) 4.68% senior note due September 2020. In December 2011, the Company issued a 55 million Swiss franc ($55.9 million at December 31, 2018) 2.44% senior note due December 2021. In October 2016, the Company issued 300 million Euros ($343.7 million at December 31, 2018) in aggregate principal amount of 1.34% senior notes due October 2026 and 200 million Euros ($229.1 million at December 31, 2018) in aggregate principal amount of 1.53% senior notes due October 2028. In November 2016, the Company issued 150 million British pounds ($191.4 million at December 31, 2018) in aggregate principal amount of 2.59% senior notes due November 2028 and 75 million British pounds ($95.7 million at December 31, 2018) in aggregate principal amount of 2.70% senior notes due November 2031. In October 2018, the Company along with certain of its foreign subsidiaries amended and restated its credit agreement dated as of September 22, 2011, as amended and restated as of March 10, 2016 (the “Credit Agreement”). The Credit Agreement amends and restates the Company’s existing $850 million revolving credit facility, which was due to expire in March 2021. The Credit Agreement consists of a five-year revolving credit facility in an aggregate principal amount of $1.5 billion with a final maturity date in October 2023. The revolving credit facility total borrowing capacity excludes an accordion feature that permits the Company to request up to an additional $500 million in revolving credit commitments at any time during the life of the Credit Agreement under certain conditions. The revolving credit facility provides the Company with additional financial flexibility to support its growth plans, including its acquisition strategy. At December 31, 2018, the Company had available borrowing capacity of $1,705.1 million under its revolving credit facility, including the $500 million accordion feature. Interest rates on outstanding borrowings under the revolving credit facility are at the applicable benchmark rate plus a negotiated spread or at the U.S. prime rate. At December 31, 2018 the Company had $260.0 million of borrowings outstanding under the revolving credit facility. At December 31, 2017, the Company did not have any borrowings outstanding under the revolving credit facility. The weighted average interest rate on the revolving credit facility for the years ended December 31, 2018 and 2017 was 1.40% and 1.61%, respectively. The Company had outstanding letters of credit primarily under the revolving credit facility totaling $35.1 million and $42.1 million at December 31, 2018 and 2017, respectively. The private placements, the senior notes and the revolving credit facility are subject to certain customary covenants, including financial covenants that, among other things, require the Company to maintain certain debt-to-EBITDA and interest coverage ratios. The Company was in compliance with all provisions of the debt arrangements at December 31, 2018. Foreign subsidiaries of the Company had available credit facilities with local foreign lenders of $49.1 million and $45.4 million at December 31, 2018 and 2017, respectively. At December 31, 2018, foreign subsidiaries had debt borrowings outstanding totaling $2.3 million, which was reported in short-term borrowings. At December 31, 2017, foreign subsidiaries had debt borrowings outstanding totaling $4.6 million, which was reported in short-term borrowings. The weighted average interest rate on total debt borrowings outstanding at December 31, 2018 and 2017 was 3.7% and 4.2%, respectively.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	11. Share-Based Compensation Under the terms of the Company’s stockholder-approved share-based plans, performance restricted stock units (“PRSUs”), incentive and non-qualified stock options and restricted stock have been, and may be, issued to the Company’s officers, management-level employees and members of its Board of Directors. Stock options granted prior to 2018 generally vest at a rate of one-fourth on each of the first four anniversaries of the grant date and have a maximum contractual term of seven years. Beginning in 2018, stock options granted generally vest at a rate of one-third on each of the first three anniversaries of the grant date and have a maximum contractual term of ten years. Restricted stock granted to employees prior to 2018 generally vests four years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days. Restricted stock granted to non-employee directors generally vests two years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days. In March 2018, the Company granted PRSUs to officers and certain key management-level employees an aggregate target award of approximately 52,000 shares of its common stock. The PRSUs vest three years from the grant date based on continuous service, with the number of shares earned (0% to 200% of the target award) depending upon the extent to which the Company achieves certain financial and market performance targets measured over the period from January 1, 2018 through December 31, 2020. Half of the PRSUs were valued in a manner similar to restricted stock as the financial targets are based on the Company’s operating results. The grant date fair value of these PRSUs are recognized as compensation expense over the vesting period based on the number of awards expected to vest at each reporting date. The other half of the PRSUs were valued using a Monte Carlo model as the performance target is related to the Company’s total shareholder return compared to a group of peer companies. The Company recognizes the grant date fair value of these awards as compensation expense ratably over the vesting period. The Company issues previously unissued shares when stock options are exercised and shares are issued from treasury stock upon the award of restricted stock. The Company measures and records compensation expense related to all stock awards by recognizing the grant date fair value of the awards over their requisite service periods in the financial statements. For grants under any of the Company’s plans that are subject to graded vesting over a service period, the Company recognizes expense on a straight-line basis over the requisite service period for the entire award. Total share-based compensation expense was as follows for the years ended December 31: 2018 2017 2016 (In thousands) Stock option expense $ 11,390 $ 9,895 $ 9,984 Restricted stock expense 14,400 15,196 12,046 PRSU expense 1,525 — — Total pre-tax expense $ 27,315 $ 25,091 $ 22,030 Pre-tax share-based compensation expense is included in the consolidated statement of income in either Cost of sales or Selling, general and administrative expenses, depending on where the recipient’s cash compensation is reported. The year ended December 31, 2017 includes a second quarter of 2017 $2.5 million pre-tax charge in corporate administrative expenses related to the accelerated vesting of restricted stock grants in association with the retirement of the Company’s Executive Chairman of the Board of Directors. The fair value of each stock option grant is estimated on the date of grant using a Black-Scholes-Merton option pricing model. The following weighted average assumptions were used in the Black-Scholes-Merton model to estimate the fair values of stock options granted during the years indicated: 2018 2017 2016 Expected volatility 17.3 % 18.0 % 21.8 % Expected term (years) 5.0 5.0 5.0 Risk-free interest rate 2.81 % 1.94 % 1.23 % Expected dividend yield 0.76 % 0.60 % 0.77 % Black-Scholes-Merton fair value per stock option granted $ 14.12 $ 11.05 $ 9.14 Expected volatility is based on the historical volatility of the Company’s stock over the stock options’ expected term. The Company used historical exercise data to estimate the stock options’ expected term, which represents the period of time that the stock options granted are expected to be outstanding. Management anticipates that the future stock option holding periods will be similar to the historical stock option holding periods. The risk-free interest rate for periods within the expected term of the stock option is based on the U.S. Treasury yield curve at the time of grant. The expected dividend yield is calculated by dividing the Company’s annual dividend, based on the most recent quarterly dividend rate, by the Company’s closing common stock price on the grant date. Compensation expense recognized for all share-based awards is net of estimated forfeitures. The Company’s estimated forfeiture rates are based on its historical experience. The following is a summary of the Company’s stock option activity and related information for the year ended December , : Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life Aggregate Intrinsic Value (In thousands) (Years) (In millions) Outstanding at the beginning of the year 5,583 $ 48.99 Granted 885 73.45 Exercised (698 ) 42.35 Forfeited (140 ) 56.55 Expired (1 ) 42.98 Outstanding at the end of the year 5,629 $ 53.46 4.2 $ 85.2 Exercisable at the end of the year 3,135 $ 47.19 2.6 $ 64.3 The aggregate intrinsic value of stock options exercised during 2018, 2017 and 2016 was $23.9 million, $41.3 million and $16.2 million, respectively. The total fair value of stock options vested during 2018, 2017 and 2016 was $10.1 million, $12.4 million and $10.8 million, respectively. The following is a summary of the Company’s nonvested stock option activity and related information for the year ended December 31, 2018: Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested stock options outstanding at the beginning of the year 2,699 $ 10.47 Granted 885 14.12 Vested (950 ) 10.61 Forfeited (140 ) 10.81 Nonvested stock options outstanding at the end of the year 2,494 $ 11.69 As of December 31, 2018, there was approximately $20 million of expected future pre-tax compensation expense related to the 2.5 million nonvested stock options outstanding, which is expected to be recognized over a weighted average period of approximately two years. The fair value of restricted shares under the Company’s restricted stock arrangement is determined by the product of the number of shares granted and the Company’s closing common stock price on the grant date. Upon the grant of restricted stock, the fair value of the restricted shares (unearned compensation) at the grant date is charged as a reduction of capital in excess of par value in the Company’s consolidated balance sheet and is amortized to expense on a straight-line basis over the vesting period, which is the same as the calculated derived service period as determined on the grant date. The following is a summary of the Company’s restricted stock activity and related information for the year ended December , : Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested restricted stock outstanding at the beginning of the year 932 $ 53.53 Granted 238 73.66 Vested (221 ) 52.74 Forfeited (58 ) 55.84 Nonvested restricted stock outstanding at the end of the year 891 $ 58.98 The total fair value of restricted stock vested during 2018, 2017 and 2016 was $11.6 million, $15.8 million and $11.1 million, respectively. The weighted average fair value of restricted stock granted per share during 2018 and 2017 was $73.66 and $60.35, respectively. As of December 31, 2018, there was approximately $28 million of expected future pre-tax compensation expense related to the 0.9 million nonvested restricted shares outstanding, which is expected to be recognized over a weighted average period of less than two years.

Retirement Plans and Other Post

Retirement Plans and Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Retirement Plans and Other Postretirement Benefits	12. Retirement Plans and Other Postretirement Benefits Retirement and Pension Plans The Company sponsors several retirement and pension plans covering eligible salaried and hourly employees. The plans generally provide benefits based on participants’ years of service and/or compensation. The following is a brief description of the Company’s retirement and pension plans. The Company maintains contributory and noncontributory defined benefit pension plans. Benefits for eligible salaried and hourly employees under all defined benefit plans are funded through trusts established in conjunction with the plans. The Company’s funding policy with respect to its defined benefit plans is to contribute amounts that provide for benefits based on actuarial calculations and the applicable requirements of U.S. federal and local foreign laws. The Company estimates that it will make both required and discretionary cash contributions of approximately $2 million to $6 million to its worldwide defined benefit pension plans in 2019. The Company uses a measurement date of December 31 (its fiscal year end) for its U.S. and foreign defined benefit pension plans. The Company sponsors a 401(k) retirement and savings plan for eligible U.S. employees. Participants in the retirement and savings plan may contribute a specified portion of their compensation on a pre-tax basis, which varies by location. The Company matches employee contributions ranging from 20% to 100%, up to a maximum percentage ranging from 1% to 8% of eligible compensation or up to a maximum of $1,200 per participant in some locations. The Company’s retirement and savings plan has a defined contribution retirement feature principally to cover U.S. salaried employees joining the Company after December 31, 1996. Under the retirement feature, the Company makes contributions for eligible employees based on a pre-established percentage of the covered employee’s salary subject to pre-established vesting. Employees of certain of the Company’s foreign operations participate in various local defined contribution plans. The Company has nonqualified unfunded retirement plans for its Directors and certain retired employees. It also provides supplemental retirement benefits, through contractual arrangements and/or a Supplemental Executive Retirement Plan (“SERP”) covering certain current and former executives of the Company. These supplemental benefits are designed to compensate the executive for retirement benefits that would have been provided under the Company’s primary retirement plan, except for statutory limitations on compensation that must be taken into account under those plans. The projected benefit obligations of the SERP and the contracts will primarily be funded by a grant of shares of the Company’s common stock upon retirement or termination of the executive. The Company is providing for these obligations by charges to earnings over the applicable periods. The following tables set forth the changes in net projected benefit obligation and the fair value of plan assets for the funded and unfunded defined benefit plans for the years ended December 31: U.S. Defined Benefit Pension Plans: 2018 2017 (In thousands) Change in projected benefit obligation: Net projected benefit obligation at the beginning of the year $ 520,376 $ 498,850 Service cost 3,777 3,538 Interest cost 19,183 20,693 Actuarial (gains) losses (43,163 ) 26,922 Gross benefits paid (30,127 ) (29,627 ) Acquisition 1,460 — Net projected benefit obligation at the end of the year $ 471,506 $ 520,376 Change in plan assets: Fair value of plan assets at the beginning of the year $ 619,993 $ 517,073 Actual return on plan assets (39,022 ) 92,058 Employer contributions 541 40,489 Gross benefits paid (30,127 ) (29,627 ) Acquisition 802 — Fair value of plan assets at the end of the year $ 552,187 $ 619,993 Foreign Defined Benefit Pension Plans: 2018 2017 (In thousands) Change in projected benefit obligation: Net projected benefit obligation at the beginning of the year $ 284,178 $ 258,297 Service cost 3,102 3,600 Interest cost 6,495 6,732 Foreign currency translation adjustments (15,568 ) 26,457 Employee contributions 108 228 Actuarial gains (4,674 ) (1,563 ) Expenses paid from assets (572 ) (608 ) Gross benefits paid (11,114 ) (8,964 ) Plan amendments 6,808 (1 ) Net projected benefit obligation at the end of the year $ 268,763 $ 284,178 Change in plan assets: Fair value of plan assets at the beginning of the year $ 226,968 $ 188,935 Actual return on plan assets (11,171 ) 13,869 Employer contributions 4,521 14,307 Employee contributions 108 228 Foreign currency translation adjustments (11,939 ) 19,201 Expenses paid from assets (572 ) (608 ) Gross benefits paid (11,114 ) (8,964 ) Fair value of plan assets at the end of the year $ 196,801 $ 226,968 The accumulated benefit obligation consisted of the following at December 31: U.S. Defined Benefit Pension Plans: 2018 2017 (In thousands) Funded plans $ 456,319 $ 503,309 Unfunded plans 5,453 6,046 Total $ 461,772 $ 509,355 Foreign Defined Benefit Pension Plans: 2018 2017 (In thousands) Funded plans $ 220,842 $ 235,787 Unfunded plans 39,459 39,531 Total $ 260,301 $ 275,318 Weighted average assumptions used to determine benefit obligations at December 31: 2018 2017 U.S. Defined Benefit Pension Plans: Discount rate 4.40 % 3.75 % Rate of compensation increase (where applicable) 3.75 % 3.75 % Foreign Defined Benefit Pension Plans: Discount rate 2.59 % 2.39 % Rate of compensation increase (where applicable) 2.50 % 2.50 % The following is a summary of the fair value of plan assets for U.S. plans at December 31: 2018 2017 Asset Class Total Level 1 Level 2 Total Level 1 Level 2 (In thousands) Corporate debt instruments $ 2,440 $ — $ 2,440 $ 1,757 $ — $ 1,757 Corporate debt instruments – Preferred 10,967 — 10,967 12,574 — 12,574 Corporate stocks – Common 115,013 115,013 — 137,693 137,693 — Municipal bonds 488 — 488 565 — 565 Registered investment companies 279,006 279,006 — 289,693 289,693 — U.S. Government securities 362 — 362 246 — 246 Total investments 408,276 394,019 14,257 442,528 427,386 15,142 Investments measured at net asset value 143,911 — — 177,465 — — Total investments $ 552,187 $ 394,019 $ 14,257 $ 619,993 $ 427,386 $ 15,142 U.S. equity securities and global equity securities categorized as level 1 are traded on national and international exchanges and are valued at their closing prices on the last trading day of the year. For U.S. equity securities and global equity securities not traded on an active exchange, or if the closing price is not available, the trustee obtains indicative quotes from a pricing vendor, broker or investment manager. These securities are categorized as level 2 if the custodian obtains corroborated quotes from a pricing vendor. Additionally, some U.S. equity securities and global equity securities are public investment vehicles valued using the Net Asset Value (“NAV”) provided by the fund manager. The NAV is the total value of the fund divided by the number of shares outstanding. Fixed income securities categorized as level 1 are traded on national and international exchanges and are valued at their closing prices on the last trading day of the year and categorized as level 2 if valued by the trustee using pricing models that use verifiable observable market data, bids provided by brokers or dealers or quoted prices of securities with similar characteristics. The expected long-term rate of return on these plan assets was 7.50% in 2018 and 2017. Equity securities included 512,565 shares of AMETEK, Inc. common stock with a market value of $34.7 million (6.3% of total plan investment assets) at December 31, 2018 and 512,565 shares of AMETEK, Inc. common stock with a market value of $37.1 million (6.0% of total plan investment assets) at December 31, 2017. The objectives of the Company’s U.S. defined benefit plans’ investment strategy are to maximize the plans’ funded status and minimize Company contributions and plan expense. Because the goal is to optimize returns over the long term, an investment policy that favors equity holdings has been established. Since there may be periods of time where both equity and fixed-income markets provide poor returns, an allocation to alternative assets may be made to improve the overall portfolio’s diversification and return potential. The Company periodically reviews its asset allocation, taking into consideration plan liabilities, plan benefit payment streams and the investment strategy of the pension plans. The actual asset allocation is monitored frequently relative to the established targets and ranges and is rebalanced when necessary. The target allocations for the U.S. defined benefits plans are approximately 50% equity securities, 20% fixed-income securities and 30% other securities and/or cash. The equity portfolio is diversified by market capitalization and style. The equity portfolio also includes international components. The objective of the fixed-income portion of the pension assets is to provide interest rate sensitivity for a portion of the assets and to provide diversification. The fixed-income portfolio is diversified within certain quality and maturity guidelines in an attempt to minimize the adverse effects of interest rate fluctuations. Other than for investments in alternative assets, certain investments are prohibited. Prohibited investments include venture capital, private placements, unregistered or restricted stock, margin trading, commodities, short selling and rights and warrants. Foreign currency futures, options and forward contracts may be used to manage foreign currency exposure. The following is a summary of the fair value of plan assets for foreign defined benefit pension plans at December 31: 2018 2017 Asset Class Total Level 3 Total Level 3 (In thousands) Life insurance $ 18,685 $ 18,685 $ 21,294 $ 21,294 Total investments 18,685 18,685 21,294 21,294 Investments measured at net asset value 178,116 — 205,674 — Total investments $ 196,801 $ 18,685 $ 226,968 $ 21,294 Life insurance assets are considered level 3 investments as their values are determined by the sponsor using unobservable market data. Alternative investments categorized as level 3 are valued based on unobservable inputs and cannot be corroborated using verifiable observable market data. Investments in level 3 funds are redeemable, however, cash reimbursement may be delayed or a portion held back until asset finalization. The following is a summary of the changes in the fair value of the foreign plans’ level investments (fair value determined using significant unobservable inputs): Life Insurance (In thousands) Balance, December 31, 2016 $ 18,147 Actual return on assets: Unrealized gains relating to instruments still held at the end of the year 3,147 Realized gains (losses) relating to assets sold during the year — Purchases, sales, issuances and settlements, net — Balance, December 31, 2017 21,294 Actual return on assets: Unrealized losses relating to instruments still held at the end of the year (2,609 ) Realized gains (losses) relating to assets sold during the year — Purchases, sales, issuances and settlements, net — Balance, December 31, 2018 $ 18,685 The objective of the Company’s foreign defined benefit plans’ investment strategy is to maximize the long-term rate of return on plan investments, subject to a reasonable level of risk. Liability studies are also performed on a regular basis to provide guidance in setting investment goals with an objective to balance risks against the current and future needs of the plans. The trustees consider the risk associated with the different asset classes, relative to the plans’ liabilities and how this can be affected by diversification, and the relative returns available on equities, fixed-income investments, real estate and cash. Also, the likely volatility of those returns and the cash flow requirements of the plans are considered. It is expected that equities will outperform fixed-income investments over the long term. However, the trustees recognize the fact that fixed-income investments may better match the liabilities for pensioners. Because of the relatively young active employee group covered by the plans and the immature nature of the plans, the trustees have chosen to adopt an asset allocation strategy more heavily weighted toward equity investments. This asset allocation strategy will be reviewed, from time to time, in view of changes in market conditions and in the plans’ liability profile. The target allocations for the foreign defined benefit plans are approximately 70% equity securities, 15% fixed-income securities and 15% other securities, insurance or cash. The assumption for the expected return on plan assets was developed based on a review of historical investment returns for the investment categories for the defined benefit pension assets. This review also considered current capital market conditions and projected future investment returns. The estimates of future capital market The projected benefit obligation, accumulated benefit obligation and fair value of plan assets for pension plans with a projected benefit obligation in excess of plan assets and pension plans with an accumulated benefit obligation in excess of plan assets were as follows at December : U.S. Defined Benefit Pension Plans: Projected Benefit Obligation Exceeds Fair Value of Assets Accumulated Benefit Obligation Exceeds Fair Value of Assets 2018 2017 2018 2017 (In thousands) Benefit obligation $ 6,928 $ 6,046 $ 6,928 $ 6,046 Fair value of plan assets 809 — 809 — Foreign Defined Benefit Pension Plans: Projected Benefit Obligation Exceeds Fair Value of Assets Accumulated Benefit Obligation Exceeds Fair Value of Assets 2018 2017 2018 2017 (In thousands) Benefit obligation $ 268,763 $ 186,756 $ 260,301 $ 180,779 Fair value of plan assets 196,801 127,170 196,801 127,170 The following table provides the amounts recognized in the consolidated balance sheet at December 31: 2018 2017 (In thousands) Funded status asset (liability): Fair value of plan assets $ 748,988 $ 846,961 Projected benefit obligation (740,269 ) (804,553 ) Funded status at the end of the year $ 8,719 $ 42,408 Amounts recognized in the consolidated balance sheet consisted of: Noncurrent asset for pension benefits (other assets) $ 86,799 $ 108,039 Current liabilities for pension benefits (1,905 ) (1,901 ) Noncurrent liability for pension benefits (76,175 ) (63,730 ) Net amount recognized at the end of the year $ 8,719 $ 42,408 The following table provides the amounts recognized in accumulated other comprehensive income, net of taxes, at December 31: Net amounts recognized: 2018 2017 (In thousands) Net actuarial loss $ 244,511 $ 178,466 Prior service costs 4,432 (1,102 ) Transition asset 7 7 Total recognized $ 248,950 $ 177,371 The following table provides the components of net periodic pension benefit expense (income) for the years ended December 31: 2018 2017 2016 (In thousands) Defined benefit plans: Service cost $ 6,879 $ 7,138 $ 6,622 Interest cost 25,678 27,424 30,049 Expected return on plan assets (59,325 ) (53,442 ) (51,140 ) Amortization of: Net actuarial loss 12,092 14,591 10,224 Prior service costs (49 ) (47 ) (52 ) Transition asset 1 1 1 Total net periodic benefit income (14,724 ) (4,335 ) (4,296 ) Other plans: Defined contribution plans 28,829 24,280 23,881 Foreign plans and other 6,185 5,866 5,694 Total other plans 35,014 30,146 29,575 Total net pension expense $ 20,290 $ 25,811 $ 25,279 The total net periodic benefit expense (income) is included in Cost of sales, General and administrative expense and Other income and expense in the consolidated statement of income. The estimated amount that will be amortized from accumulated other comprehensive income into net periodic pension benefit expense in 2019 for the net actuarial losses and prior service costs is expected to be approximately $16 million. The following weighted average assumptions were used to determine the above net periodic pension benefit expense for the years ended December 31: 2018 2017 2016 U.S. Defined Benefit Pension Plans: Discount rate 4.40 % 4.25 % 4.80 % Expected return on plan assets 7.50 % 7.50 % 7.75 % Rate of compensation increase (where applicable) 3.75 % 3.75 % 3.75 % Foreign Defined Benefit Pension Plans: Discount rate 2.59 % 2.56 % 3.62 % Expected return on plan assets 6.52 % 6.79 % 6.95 % Rate of compensation increase (where applicable) 2.50 % 2.50 % 2.88 % Estimated Future Benefit Payments The estimated future benefit payments for U.S. and foreign plans are as follows: 2019 – $39.7 million; 2020 –$40.4 million; 2021 – $41.4 million; 2022 – $41.9 million; 2023 – $43.5 million; 2024 to 2028 – $220.3 million. Future benefit payments primarily represent amounts to be paid from pension trust assets. Amounts included that are to be paid from the Company’s assets are not significant in any individual year. Postretirement Plans and Postemployment Benefits The Company provides limited postretirement benefits other than pensions for certain retirees and a small number of former employees. Benefits under these arrangements are not funded and are not significant. The Company also provides limited postemployment benefits for certain former or inactive employees after employment but before retirement. Those benefits are not significant in amount. The Company has a deferred compensation plan, which allows employees whose compensation exceeds the statutory IRS limit for retirement benefits to defer a portion of earned bonus compensation. The plan permits deferred amounts to be deemed invested in either, or a combination of, (a) an interest-bearing account, benefits from which are payable out of the general assets of the Company, or (b) the equivalent of a fund which invests in shares of the Company’s common stock on behalf of the employee. The amount deferred under the plan, including income earned, was $14.4 million and $25.4 million at December 31, 2018 and 2017, respectively. Administrative expense for the deferred compensation plan is borne by the Company and is not significant.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingencies	13. Contingencies Indemnifications In conjunction with certain acquisition and divestiture transactions, the Company may agree to make payments to compensate or indemnify other parties for possible future unfavorable financial consequences resulting from specified events (e.g., breaches of contract obligations or retention of previously existing environmental, tax or employee liabilities) whose terms range in duration and often are not explicitly defined. Where appropriate, the obligation for such indemnifications is recorded as a liability. Because the amount of these types of indemnifications generally is not specifically stated, the overall maximum amount of the obligation under such indemnifications cannot be reasonably estimated. Further, the Company indemnifies its directors and officers for claims against them in connection with their positions with the Company. Historically, any such costs incurred to settle claims related to these indemnifications have been minimal for the Company. The Company believes that future payments, if any, under all existing indemnification agreements would not have a material impact on its consolidated results of operations, financial position or cash flows. Asbestos Litigation The Company (including its subsidiaries) has been named as a defendant in a number of asbestos-related lawsuits. Certain of these lawsuits relate to a business which was acquired by the Company and do not involve products which were manufactured or sold by the Company. In connection with these lawsuits, the seller of such business has agreed to indemnify the Company against these claims (the “Indemnified Claims”). The Indemnified Claims have been tendered to, and are being defended by, such seller. The seller has met its obligations, in all respects, and the Company does not have any reason to believe such party would fail to fulfill its obligations in the future. To date, no judgments have been rendered against the Company as a result of any asbestos-related lawsuit. The Company believes that it has good and valid defenses to each of these claims and intends to defend them vigorously. Environmental Matters Certain historic processes in the manufacture of products have resulted in environmentally hazardous waste by-products as defined by federal and state laws and regulations. At December 31, 2018, the Company is named a Potentially Responsible Party (“PRP”) at 13 non-AMETEK-owned former waste disposal or treatment sites (the “non-owned” sites). The Company is identified as a “de minimis” party in 12 of these sites based on the low volume of waste attributed to the Company relative to the amounts attributed to other named PRPs. In eight of these sites, the Company has reached a tentative agreement on the cost of the de minimis settlement to satisfy its obligation and is awaiting executed agreements. The tentatively agreed-to settlement amounts are fully reserved. In the other four sites, the Company is continuing to investigate the accuracy of the alleged volume attributed to the Company as estimated by the parties primarily responsible for remedial activity at the sites to establish an appropriate settlement amount. At the remaining site where the Company is a non-de minimis PRP, the Company is participating in the investigation and/or related required remediation as part of a PRP Group and reserves have been established sufficient to satisfy the Company’s expected obligations. The Company historically has resolved these issues within established reserve levels and reasonably expects this result will continue. In addition to these non-owned sites, the Company has an ongoing practice of providing reserves for probable remediation activities at certain of its current or previously owned manufacturing locations (the “owned” sites). For claims and proceedings against the Company with respect to other environmental matters, reserves are established once the Company has determined that a loss is probable and estimable. This estimate is refined as the Company moves through the various stages of investigation, risk assessment, feasibility study and corrective action processes. In certain instances, the Company has developed a range of estimates for such costs and has recorded a liability based on the best estimate. It is reasonably possible that the actual cost of remediation of the individual sites could vary from the current estimates and the amounts accrued in the consolidated financial statements; however, the amounts of such variances are not expected to result in a material change to the consolidated financial statements. In estimating the Company’s liability for remediation, the Company also considers the likely proportionate share of the anticipated remediation expense and the ability of the other PRPs to fulfill their obligations. Total environmental reserves at December 31, 2018 and 2017 were $27.8 million and $30.1 million, respectively, for both non-owned and owned sites. In 2018, the Company recorded $4.5 million in reserves. Additionally, in 2018 the Company spent $6.6 million on environmental matters and the reserve decreased $0.2 million due to foreign currency translation . The Company’s reserves for environmental liabilities at December 31, 2018 and 2017 included reserves of $9.6 million and $11.6 million, respectively, for an owned site acquired in connection with the 2005 acquisition of HCC Industries (“HCC”). The Company is the designated performing party for the performance of remedial activities for one of several operating units making up a Superfund site in the San Gabriel Valley of California. The Company has obtained indemnifications and other financial assurances from the former owners of HCC related to the costs of the required remedial activities. At December 31, 2018, the Company had $12.1 million in receivables related to HCC for probable recoveries from third-party escrow funds and other committed third-party funds to support the required remediation. Also, the Company is indemnified by HCC’s former owners for approximately $19 million of additional costs. The Company has agreements with other former owners of certain of its acquired businesses, as well as new owners of previously owned businesses. Under certain of the agreements, the former or new owners retained, or assumed and agreed to indemnify the Company against, certain environmental and other liabilities under certain circumstances. The Company and some of these other parties also carry insurance coverage for some environmental matters. To date, these parties have met their obligations in all material respects. The Company believes it has established reserves for the environmental matters described above, which are sufficient to perform all known responsibilities under existing claims and consent orders. The Company has no reason to believe that other third parties would fail to perform their obligations in the future. In the opinion of management, based on presently available information and the Company’s historical experience related to such matters, an adequate provision for probable costs has been made and the ultimate cost resulting from these actions is not expected to materially affect the consolidated results of operations, financial position or cash flows of the Company. The Company has been remediating groundwater contamination for several contaminants, including trichloroethylene (“TCE”), at a formerly owned site in El Cajon, California. Several lawsuits have been filed against the Company alleging damages resulting from the groundwater contamination, including property damages and personal injury, and seeking compensatory and punitive damages. The Company believes that it has good and valid defenses to each of these claims and intends to defend them vigorously. The Company believes it has established reserves for these lawsuits that are sufficient to satisfy its expected exposure. The Company does not expect the outcome of these matters, either individually or in the aggregate, to materially affect the consolidated results of operations, financial position or cash flows of the Company.

Leases and Other Commitments

Leases and Other Commitments	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Leases and Other Commitments	14. Leases and Other Commitments Minimum aggregate rental commitments under noncancellable leases in effect at December 31, 2018 (principally for production and administrative facilities and equipment) amounted to $200.0 million, consisting of payments of $43.1 million in 2019, $35.7 million in 2020, $29.0 million in 2021, $23.3 million in 2022, $18.9 million in 2023 and $50 million thereafter. The leases expire over a range of years from 2019 to 2082, with renewal or purchase options, subject to various terms and conditions, contained in most of the leases. Rental expense was $52.5 million in 2018, $49.7 million in 2017 and $46.3 million in 2016. As of December 31, 2018 and 2017, the Company had $470.2 million and $390.6 million, respectively, in purchase obligations outstanding, which primarily consisted of contractual commitments to purchase certain inventories at fixed prices. The Company does not provide significant guarantees on a routine basis. The Company primarily issues guarantees, stand-by letters of credit and surety bonds in the ordinary course of its business to provide financial or performance assurance to third parties on behalf of its consolidated subsidiaries to support or enhance the subsidiary’s stand-alone creditworthiness. The amounts subject to certain of these agreements vary depending on the covered contracts actually outstanding at any particular point in time. At December 31, 2018, the maximum amount of future payment obligations relative to these various guarantees was $94.5 million and the outstanding liability under certain of those guarantees was $2.3 million.

Reportable Segments and Geograp

Reportable Segments and Geographic Areas Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Reportable Segments and Geographic Areas Information	15. Reportable Segments and Geographic Areas Information Descriptive Information about Reportable Segments The Company has two reportable segments, EIG and EMG. The Company’s operating segments are identified based on the existence of segment managers. Certain of the Company’s operating segments have been aggregated for segment reporting purposes primarily on the basis of product type, production processes, distribution methods and similarity of economic characteristics. EIG manufactures advanced instruments for the process, power and industrial, and aerospace markets. It provides process and analytical instruments for the oil and gas, petrochemical, pharmaceutical, semiconductor, automation, and food and beverage industries. EIG also provides instruments to the laboratory equipment, ultraprecision manufacturing, medical, and test and measurement markets. It makes power quality monitoring and metering devices, uninterruptible power supplies, programmable power equipment, electromagnetic compatibility test equipment and gas turbines sensors. EIG also provides dashboard instruments for heavy trucks and other vehicles, as well as instrumentation and controls for the food and beverage industries. It supplies the aerospace industry with aircraft and engine sensors, monitoring systems, power supplies, fuel and fluid measurement systems, and data acquisition systems. EMG is a differentiated supplier of automation solutions, thermal management systems, specialty metals and electrical interconnects. It manufactures highly engineered electrical connectors and electronic packaging used to protect sensitive electronic devices. EMG also makes precision motion control products for data storage, medical devices, business equipment, automation and other applications. It supplies high-purity powdered metals, strip and foil, specialty clad metals and metal matrix composites. EMG also manufactures motors used in commercial appliances, fitness equipment, food and beverage machines, hydraulic pumps and industrial blowers. It produces motor-blower systems and heat exchangers used in thermal management and other applications on a variety of military and commercial aircraft and military ground vehicles. EMG also operates a global network of aviation maintenance, repair and overhaul facilities. Measurement of Segment Results Segment operating income represents net sales less all direct costs and expenses (including certain administrative and other expenses) applicable to each segment, but does not include interest expense. Net sales by segment are reported after elimination of intra- and intersegment sales and profits, which are insignificant in amount. Reported segment assets include allocations directly related to the segment’s operations. Corporate assets consist primarily of investments, prepaid pensions, insurance deposits and deferred taxes. Reportable Segment Financial Information For sales by segment, see Note 3. 2018 2017 2016 (In thousands) Operating income and income before income taxes: Segment operating income (1)(2) Electronic Instruments $ 782,144 $ 671,646 $ 571,077 Electromechanical 363,765 306,779 274,234 Total segment operating income 1,145,909 978,425 845,311 Corporate administrative expenses (70,369 ) (74,805 ) (54,332 ) Consolidated operating income 1,075,540 903,620 790,979 Interest and other expenses, net (87,795 ) (106,891 ) (97,876 ) Consolidated income before income taxes $ 987,745 $ 796,729 $ 693,103 Assets: Electronic Instruments $ 5,625,303 $ 4,803,575 Electromechanical 2,685,674 2,535,503 Total segment assets 8,310,977 7,339,078 Corporate 351,311 456,986 Consolidated assets $ 8,662,288 $ 7,796,064 Additions to property, plant and equipment (3) Electronic Instruments $ 110,858 $ 54,321 $ 45,091 Electromechanical 42,461 36,829 39,340 Total segment additions to property, plant and equipment 153,319 91,150 84,431 Corporate 3,496 3,002 1,914 Consolidated additions to property, plant and equipment $ 156,815 $ 94,152 $ 86,345 Depreciation and amortization: Electronic Instruments $ 121,709 $ 108,053 $ 104,284 Electromechanical 75,801 73,222 73,767 Total segment depreciation and amortization 197,510 181,275 178,051 Corporate 1,980 1,952 1,665 Consolidated depreciation and amortization $ 199,490 $ 183,227 $ 179,716 (1) Segment operating income represents net sales less all direct costs and expenses (including certain administrative and other expenses) applicable to each segment, but does not include interest expense. (2) Effective January 1, 2018, the Company retrospectively adopted ASU 2017-07. See Note 2. (3) Includes $74.6 million in 2018, $19.1 million in 2017 and $23.1 million in 2016 from acquired businesses. Geographic Areas Information about the Company’s operations in different geographic areas for the years ended December 31, 2018 and 2017 is shown below. For sales by geography, see Note 3. 2018 2017 (In thousands) Long-lived assets from continuing operations (excluding intangible assets): United States $ 380,855 $ 325,908 International (1) United Kingdom 55,527 62,643 European Union countries 78,524 65,204 Asia 11,846 12,073 Other foreign countries 27,378 27,468 Total international 173,275 167,388 Total consolidated $ 554,130 $ 493,296 (1) Represents long-lived assets of foreign-based operations only.

Additional Consolidated Income

Additional Consolidated Income Statement and Cash Flow Information	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Additional Consolidated Income Statement and Cash Flow Information	16. Additional Consolidated Income Statement and Cash Flow Information Included in other income are interest and other investment income of $2.0 million, $2.1 million and $1.2 million for 2018, 2017 and 2016, respectively. Income taxes paid in 2018, 2017 and 2016 were $195.2 million, $176.6 million and $180.8 million, respectively. Cash paid for interest was $83.6 million, $96.1 million and $91.8 million in 2018, 2017 and 2016, respectively.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Stockholders' Equity	17. Stockholders’ Equity In 2017, the Company repurchased approximately 114,000 shares of its common stock for $6.9 million in cash under its share repurchase authorization. At December 31, 2017, $368.7 million was available under the Company’s Board of Directors authorization for future share repurchases. Effective February 1, 2018, the Company’s Board of Directors approved a 56 At December 31, 2018, the Company held 36.5 million shares in its treasury at a cost of $ 1,570.2 1,209.1

Restructuring Charges

Restructuring Charges	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring Charges	18. Restructuring Charges During the fourth quarter of 2016, the Company recorded pre-tax restructuring charges totaling $25.6 million, which had the effect of reducing net income by $17.0 million. The restructuring charges were reported in the consolidated statement of income as follows: $24.0 million in Cost of sales and $1.6 million in Selling, general and administrative expenses. The restructuring charges were reported in operating income as follows: $12.4 million in EIG, $11.6 million in EMG and $1.6 million in corporate administrative expenses. The restructuring actions primarily related to $19.3 million in severance costs for a reduction in workforce and $6.2 million of asset write-downs in response to the impact of a weak global economy on certain of the Company’s businesses and the effects of a continued strong U.S. dollar. The restructuring activities have been broadly implemented across the Company’s various businesses with most actions expected to be completed in 2019. During the fourth quarter of 2015, the Company recorded pre-tax restructuring charges totaling $20.7 million, which had the effect of reducing net income by $13.9 million. The restructuring charges were reported in the consolidated statement of income as follows: $20.0 million in Cost of sales and $0.7 million in Selling, general and administrative expenses. The restructuring charges were reported in operating income as follows: $9.3 million in EIG, $10.8 million in EMG and $0.7 million in corporate administrative expenses. The restructuring actions primarily related to a reduction in workforce in response to the impact of a weak global economy on certain of the Company’s businesses and the effects of a continued strong U.S. dollar. The restructuring activities have been broadly implemented across the Company’s various businesses with all actions expected to be completed in 2019. Accrued liabilities in the Company’s consolidated balance sheet included amounts related to the fourth quarters of 2016 and 2015 restructuring charges as follows (in millions): Fourth Quarter of 2016 Restructuring Fourth Quarter of 2015 Restructuring Balance at December 31, 2016 $ 19.2 $ 9.2 Utilization (6.4 ) (2.4 ) Foreign currency translation adjustments and other — (0.1 ) Balance at December 31, 2017 12.8 6.7 Utilization (5.5 ) (1.0 ) Foreign currency translation adjustments and other (2.1 ) (0.8 ) Balance at December 31, 2018 $ 5.2 $ 4.9

Quarterly Financial Data

Quarterly Financial Data	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	19. Quarterly Financial Data (Unaudited) First Quarter Second Quarter Third Quarter Fourth Quarter Total Year (In thousands, except per share amounts) 2018 Net sales (1) $ 1,172,647 $ 1,208,935 $ 1,192,962 $ 1,271,328 $ 4,845,872 Operating income $ 258,168 $ 270,086 $ 265,266 $ 282,020 $ 1,075,540 Net income (2) $ 181,340 $ 193,860 $ 191,213 $ 211,520 $ 777,933 Basic earnings per share (2)(3) $ 0.79 $ 0.84 $ 0.83 $ 0.92 $ 3.37 Diluted earnings per share (2)(3) $ 0.78 $ 0.83 $ 0.82 $ 0.91 $ 3.34 Dividends paid per share $ 0.14 $ 0.14 $ 0.14 $ 0.14 $ 0.56 2017 Net sales $ 1,007,682 $ 1,064,604 $ 1,084,799 $ 1,143,085 $ 4,300,170 Operating income (4)(5) $ 217,447 $ 229,549 $ 230,038 $ 226,586 $ 903,620 Net income (5)(6) $ 138,926 $ 150,481 $ 153,531 $ 238,532 $ 681,470 Basic earnings per share (3)(5)(6) $ 0.61 $ 0.65 $ 0.67 $ 1.03 $ 2.96 Diluted earnings per share (3)(5)(6) $ 0.60 $ 0.65 $ 0.66 $ 1.03 $ 2.94 Dividends paid per share $ 0.09 $ 0.09 $ 0.09 $ 0.09 $ 0.36 (1) Effective January 1, 2018, the Company adopted ASC 606. See Note 3. (2) During 2018, the Company recorded a net benefit of $ 11.8 11.8 (3) The sum of quarterly earnings per share may not equal total year earnings per share due to rounding of earnings per share amounts, and differences in weighted average shares and equivalent shares outstanding for each of the periods presented. (4) Quarter and year ending 2017 operating income amounts were restated in accordance with the retrospective adoption of ASU 2017-07. See Note 2. (5) During 2017, the Company recorded pre-tax restructuring charges totaling $10.8 million, recorded in the fourth quarter of 2017. The restructuring charges had the effect of reducing net income for 2017 by $9.1 million. (6) During 2017, the Company recorded a net benefit of $ 91.6 91.6

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Consolidation	Basis of Consolidation The accompanying consolidated financial statements reflect the results of operations, financial position and cash flows of AMETEK, Inc. (the “Company”), and include the accounts of the Company and subsidiaries, after elimination of all intercompany transactions in the consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates and assumptions.
Prior Period Reclassifications	Prior Period Reclassifications Certain reclassifications and disclosures of prior period amounts have been made to conform to the current year presentation. See Note .
Cash Equivalents, Securities and Other Investments	Cash Equivalents, Securities and Other Investments All highly liquid investments with maturities of three months or less
Accounts Receivable	Accounts Receivable The Company maintains allowances for estimated losses resulting from the inability of specific customers to meet their financial obligations to the Company. A specific allowance for doubtful accounts is recorded against the amount due from these customers. For all other customers, the Company recognizes allowance for doubtful accounts based on the length of time specific receivables are past due based on its historical experience. The allowance for doubtful accounts was $9.3 million and $10.4 million at December 31, 2018 and 2017, respectively. See Note 8.
Inventories	Inventories The Company uses the first-in, first-out (“FIFO”) method of accounting, which approximates current replacement cost, for approximately 85% of its inventories at December 31, 2018. The last-in, first-out (“LIFO”) method of accounting is used to determine cost for the remaining 15% of the Company’s inventory at December 31, 2018. For inventories where cost is determined by the LIFO method, the FIFO value would have been $28.4 million and $22.9 million higher than the LIFO value reported in the consolidated balance sheet at December 31, 2018 and 2017, respectively. The Company provides estimated inventory reserves for slow-moving and obsolete inventory based on current assessments about future demand, market conditions, customers who may be experiencing financial difficulties and related management initiatives. See Note 8.
Business Combinations	Business Combinations The Company allocates the purchase price of an acquired company, including when applicable, the acquisition date fair value of contingent consideration between tangible and intangible assets acquired and liabilities assumed from the acquired business based on their estimated fair values, with the residual of the purchase price recorded as goodwill. The results of operations of the acquired business are included in the Company’s operating results from the date of acquisition. See Note 6.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost. Expenditures for additions to plant facilities, or that extend their useful lives, are capitalized. The cost of minor tools, jigs and dies, and maintenance and repairs is charged to expense as incurred. Depreciation of plant and equipment is calculated principally on a straight-line basis over the estimated useful lives of the related assets. The range of lives for depreciable assets is generally three to ten years for machinery and equipment, five to 27 years for leasehold improvements and 25 to 50 years for buildings. Depreciation expense was $85.4 million, $82.0 million and $74.8 million for the years ended December 31, 2018, 2017 and 2016, respectively. See Note 8.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and other intangible assets with indefinite lives, primarily trademarks and trade names, are not amortized; rather, they are tested for impairment at least annually. The Company identifies its reporting units at the component level, which is one level below its operating segments. Generally, goodwill arises from acquisitions of specific operating companies and is assigned to the reporting unit in which a particular operating company resides. The Company’s reporting units are divisions that are one level below its operating segments and for which discrete financial information is prepared and regularly reviewed by segment management. The Company principally relies on a discounted cash flow analysis to determine the fair value of each reporting unit, which considers forecasted cash flows discounted at an appropriate discount rate. The Company believes that market participants would use a discounted cash flow analysis to determine the fair value of its reporting units in a sale transaction. The annual goodwill impairment test requires the Company to make a number of assumptions and estimates concerning future levels of revenue growth, operating margins, depreciation, amortization and working capital requirements, which are based on the Company’s long-range plan and are considered level 3 inputs. The Company’s long-range plan is updated as part of its annual planning process and is reviewed and approved by management. The discount rate is an estimate of the overall after-tax rate of return required by a market participant whose weighted average cost of capital includes both equity and debt, including a risk premium. While the Company uses the best available information to prepare its cash flow and discount rate assumptions, actual future cash flows or market conditions could differ significantly resulting in future impairment charges related to recorded goodwill balances. The impairment test for indefinite-lived intangibles other than goodwill (primarily trademarks and trade names) consists of a comparison of the fair value of the indefinite-lived intangible asset to the carrying value of the asset as of the impairment testing date. The Company estimates the fair value of its indefinite-lived intangibles using the relief from royalty method using level 3 inputs. The fair value derived from the relief from royalty method is measured as the discounted cash flow savings realized from owning such trademarks and trade names and not having to pay a royalty for their use. The Company completed its required annual impairment tests in the fourth quarter of 2018, 2017 and 2016 and determined that the carrying values of the Company’s goodwill were not impaired. The Company completed its required annual impairment tests in the fourth quarter of 2018 and 2017 and determined that the carrying values of the Company’s other intangible assets with indefinite lives were not impaired. The Company completed its required annual impairment tests in the fourth quarter of 2016 and determined that the carrying values of certain of the Company’s trademarks and trade names with indefinite lives were impaired. During 2016, the Company recorded a $13.9 million non-cash impairment charge related to certain of the Company’s trade names. Other intangible assets with finite lives are evaluated for impairment when events or changes in circumstances indicate the carrying value may not be recoverable. The carrying value of other intangible assets with finite lives is considered impaired when the total projected undiscounted cash flows from the asset group are less than the carrying value. In that event, a loss is recognized based on the amount by which the carrying value exceeds the fair value of those assets. Fair value is determined primarily using present value techniques based on projected cash flows from the asset group. Intangible assets, other than goodwill, with definite lives are amortized over their estimated useful lives. Patents and technology are being amortized over useful lives of five to 20 years, with a weighted average life of 16 years. Customer relationships are being amortized over a period of five to 20 years, with a weighted average life of 19 years. Miscellaneous other intangible assets are being amortized over a period of two to 20 years. On a quarterly basis, the Company evaluates the reasonableness of the estimated useful lives of these intangible assets. See Note 7. In August 2018, the FASB issued ASU No. 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (“ASU 2018-15”), that requires implementation costs incurred by customers in cloud computing arrangements to be deferred and recognized over the term of the arrangement, if those costs would be capitalized by the customer in a software licensing arrangement under the internal-use software guidance in ASC Topic 350, Intangibles – Goodwill and Other . ASU 2018-15 requires a customer to disclose the nature of its hosting arrangements that are service contracts and provide disclosures as if the deferred implementation costs were a separate, major depreciable asset class. ASU 2018-15 is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted. The Company has not determined the impact ASU 2018-15 may have on the Company’s consolidated results of operations, financial position, cash flows and financial statement disclosures.
Financial Instruments and Foreign Currency Translation	Financial Instruments and Foreign Currency Translation Assets and liabilities of foreign operations are translated using exchange rates in effect at the balance sheet date and their results of operations are translated using average exchange rates for the year. Certain transactions of the Company and its subsidiaries are denominated in currencies other than their functional currency. Exchange gains and losses from those transactions are included in operating results for the year. The Company makes infrequent use of derivative financial instruments. Forward contracts are entered into from time to time to hedge certain inventory purchases, export sales, debt or foreign currency transactions, thereby minimizing the Company’s exposure to raw material commodity price or foreign currency fluctuation. In instances where transactions are designated as hedges of an underlying item, the gains and losses on those transactions are included in accumulated other comprehensive income within stockholders’ equity to the extent they are effective as hedges. An evaluation of hedge effectiveness is performed by the Company on an ongoing basis and any changes in the hedge are made as appropriate. See Note 5.
Revenue Recognition	Revenue Recognition Revenue is derived from sales of products and services. The Company’s products and services are marketed and sold worldwide through two operating groups: EIG and EMG. See Note 15 Descriptive Information about Reportable Segments . See Note 3 for the Company’s revenue recognition policy under ASC 606, adopted January 1, 2018. Related to revenue recognition in 2017 and 2016, the majority of the Company’s revenues on product sales were recognized at a point in time when the customer obtains control of the product. The transfer in control of the product to the customer was typically evidenced by one or more of the following: the customer having legal title to the product, the Company’s present right to payment, the customer’s physical possession of the product, the customer accepting the product, or the customer having the benefits of ownership or risk of loss. For a small percentage of sales where title and risk of loss transfers at the point of delivery, the Company recognized revenue upon delivery to the customer, which is the point that control transferred, assuming all other criteria for revenue recognition were met.
Research and Development	Research and Development Research and development costs
Shipping and Handling Costs	Shipping and Handling Costs Shipping and handling costs are included in Cost of sales and were $62.7 million in 2018, $53.1 million in 2017 and $47.9 million in 2016.
Share-Based Compensation	Share-Based Compensation The Company expenses the fair value of share-based awards made under its share-based plans in the consolidated financial statements over their requisite service period of the grants. See Note 11. In August 2018, the FASB issued ASU No. 2018-14, Compensation – Retirement Benefits – Defined Benefit Plans – General (“ASU 2018-14”), which changes the disclosure requirements of ASC Topic 715, Compensation – Retirement Benefits , by eliminating, modifying and adding to those requirements. ASU 2018-14 is effective for fiscal years beginning after December 15, 2020. Early adoption is permitted and the amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company has not determined the impact ASU 2018-14 may have on the Company’s consolidated financial statement disclosures.
Income Taxes	Income Taxes The Company’s process of providing for income taxes and determining the related balance sheet accounts requires management to assess uncertainties, make judgments regarding outcomes and utilize estimates. The Company conducts a broad range of operations around the world and is therefore subject to complex tax regulations in numerous international taxing jurisdictions, resulting at times in tax audits, disputes and potential litigation, the outcome of which is uncertain. Management must make judgments currently about such uncertainties and determine estimates of the Company’s tax assets and liabilities. To the extent the final outcome differs, future adjustments to the Company’s tax assets and liabilities may be necessary. The Company recognizes interest and penalties accrued related to uncertain tax positions in income tax expense. The Company assesses the realizability of its deferred tax assets, taking into consideration the Company’s forecast of future taxable income, available net operating loss carryforwards and available tax planning strategies that could be implemented to realize the deferred tax assets. Based on this assessment, management must evaluate the need for, and amount of, valuation allowances against the Company’s deferred tax assets. To the extent facts and circumstances change in the future, adjustments to the valuation allowances may be required. See Note 9.
Pensions	Pensions The Company has U.S. and foreign defined benefit and defined contribution pension plans. The most significant elements in determining the Company’s pension income or expense are the assumed pension liability discount rate and the expected return on plan assets. All unrecognized prior service costs, remaining transition obligations or assets and actuarial gains and losses have been recognized, net of tax effects, as a charge to accumulated other comprehensive income in stockholders’ equity and will be amortized as a component of net periodic pension cost. The Company uses a measurement date of December 31 (its fiscal year end) for its U.S. and foreign defined benefit plans. See Note 12.
Earnings Per Share	Earnings Per Share The calculation of basic earnings per share is based on the weighted average number of common shares considered outstanding during the periods. The calculation of diluted earnings per share reflects the effect of all potentially dilutive securities (principally outstanding stock options and restricted stock grants). The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows for the years ended December 31: 2018 2017 2016 (In thousands) Weighted average shares: Basic shares 230,823 230,229 232,593 Equity-based compensation plans 1,889 1,616 1,137 Diluted shares 232,712 231,845 233,730
Revenue from Contracts with Customers	In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09 (Topic 606), Revenue from Contracts with Customers (“ASU 2014-09”) and modified the standard thereafter within Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”). ASU 2014-09 established a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and superseded most of the existing revenue recognition guidance. The Company adopted ASU 2014-09 effective January 1, 2018 using the modified retrospective method. The adoption of ASU 2014-09 did not have a significant impact on the Company’s consolidated results of operations, financial position and cash flows. See Note 3.
Leases	In February 2016, the FASB issued ASU No. 2016-02, Leases (“ASU 2016-02”) and modified the standard in July 2018 with ASU No. 2018-11, Leases (“ASU 2018-11”). The new standard establishes a right-of-use model that requires a lessee to record a right-of-use asset and a lease liability on the balance sheet for all leases. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. ASU 2016-02 is effective for interim and annual reporting periods beginning after December 15, 2018. The Company adopted ASU 2016-02 on January 1, 2019. ASU 2016-02 and ASU 2018-11 include transitional guidance, that allows for a modified retrospective approach with “optional transition relief”, which the Company expects to elect. The Company expects the adoption of ASU 2016-02 to have a material effect on our balance sheet. The adoption of ASU 2016-02 is not expected to have a significant impact on the Company’s consolidated results of operations or cash flows. The Company is primarily a lessee. While we continue to design internal controls and assess all the effects of adoption, the Company currently believes the most significant effects to be the recognition of new right-of-use assets and lease liabilities on our balance sheet related to real estate, machinery and equipment operating leases and providing significant new disclosures about our leasing activities.
Clarifying the Definition of a Business	In January 2017, the FASB issued ASU No. 2017-01, Clarifying the Definition of a Business
Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost	In March 2017, the FASB issued ASU 2017-07, which changes how employers that sponsor defined benefit pension and/or other postretirement benefit plans present the net periodic benefit cost in the income statement. ASU 2017-07 requires employers to present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs. All other components of the net periodic benefit cost are presented outside of operating income. The Company retrospectively adopted ASU 2017-07 effective January 1, 2018. For twelve months ended December 31, 2017 and 2016, the consolidated statement of income was restated to increase Cost of sales by $9.9 million and $10.3 million, increase Selling, general and administrative expenses by $1.5 million and $0.6 million, and decrease Other expense, net by $11.5 million and $10.9 million, respectively, for net periodic benefit income components other than service cost. For the twelve months ended December 31, 2017 and 2016, the $11.5 million and $10.9 million, respectively, of net periodic benefit income components other than service cost were originally reported in operating income as follows: $5.8 million and $6.6 million in Electronic Instruments (“EIG”), $4.1 million and $3.6 million in Electromechanical (“EMG”), and $1.5 million and $0.6 million in Corporate administrative expense, respectively. The adoption of ASU 2017-07 did not have a significant impact on the Company’s consolidated results of operations, financial position, cash flows and financial statement disclosures.
Scope of Modification Accounting	In May 2017, the FASB issued ASU No. 2017-09, Scope of Modification Accounting
Reporting Comprehensive Income, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income	In February 2018, the FASB issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
Fair Value Measurement	In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (“ASU 2018-13”), which changes the fair value measurement disclosure requirements of ASC Topic 820, Fair Value Measurement (“ASC 820”), by eliminating, modifying and adding to those requirements. ASU 2018-13 also modifies the disclosure objective paragraphs of ASC 820 to eliminate (1) “at a minimum” from the phrase “an entity shall disclose at a minimum” and (2) other similar “open ended” disclosure requirements to promote the appropriate exercise of discretion by entities. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, including interim periods therein. Early adoption is permitted. The Company has not determined the impact ASU 2018-13 may have on the Company’s consolidated financial statement disclosures.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Number of Weighted Average Shares	The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows for the years ended December 31: 2018 2017 2016 (In thousands) Weighted average shares: Basic shares 230,823 230,229 232,593 Equity-based compensation plans 1,889 1,616 1,137 Diluted shares 232,712 231,845 233,730

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	The outstanding contract asset and (liability) accounts were as follows: 2018 (In thousands) Contract assets – January 1, 2018 $ 32,658 Contract assets – December 31, 2018 58,266 Change in contract assets – increase (decrease) 25,608 Contract liabilities – January 1, 2018 117,058 Contract liabilities – December 31, 2018 146,162 Change in contract liabilities – (increase) decrease (29,104 ) Net Change $ (3,496 )
Revenue from External Customers by Geographic Areas [Table Text Block]	Information about the Company’s operations in different geographic areas for the year ended December 31, 2018 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2018 EIG EMG Total (In thousands) United States $ 1,446,974 $ 950,358 $ 2,397,332 International (1) United Kingdom 61,513 135,077 196,590 European Union countries 389,032 399,547 788,579 Asia 780,135 205,047 985,182 Other foreign countries 351,305 126,884 478,189 Total international 1,581,985 866,555 2,448,540 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872 (1) Includes U.S. export sales of $1,269.4 million. Information about the Company’s operations in different geographic areas for the year ended December 31, 2017 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2017 EIG EMG Total (In thousands) United States $ 1,284,570 $ 801,610 $ 2,086,180 International (1) United Kingdom 59,319 127,215 186,534 European Union countries 327,970 364,146 692,116 Asia 685,070 194,356 879,426 Other foreign countries 333,625 122,289 455,914 Total international 1,405,984 808,006 2,213,990 Consolidated net sales $ 2,690,554 $ 1,609,616 $ 4,300,170 (1) Includes U.S. export sales of $1,142.3 million. Information about the Company’s operations in different geographic areas for the year ended December 31, 2016 is shown below. Net sales were attributed to geographic areas based on the location of the customer. 2016 EIG EMG Total (In thousands) United States $ 1,110,795 $ 718,546 $ 1,829,341 International (1) United Kingdom 50,880 137,820 188,700 European Union countries 287,391 331,747 619,138 Asia 611,819 174,049 785,868 Other foreign countries 299,396 117,644 417,040 Total international 1,249,486 761,260 2,010,746 Consolidated net sales $ 2,360,281 $ 1,479,806 $ 3,840,087 (1) Includes U.S. export sales of $1,036.0 million
Revenue from External Customers by Products and Services [Table Text Block]	The Company’s major products and services in the reportable segments were as follows for the year ended December 31: 2018 EIG EMG Total (In thousands) Process and analytical instrumentation $ 2,120,448 $ — $ 2,120,448 Aerospace and power 908,511 456,517 1,365,028 Automation and engineered solutions — 1,360,396 1,360,396 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872
Disaggregation of Revenue [Table Text Block]	The Company’s timing of revenue recognition was as follows for the year ended December 31: 2018 EIG EMG Total (In thousands) Products transferred at a point in time $ 2,533,718 $ 1,690,124 $ 4,223,842 Products and services transferred over time 495,241 126,789 622,030 Consolidated net sales $ 3,028,959 $ 1,816,913 $ 4,845,872
Schedule of Product Warranty Liability [Table Text Block]	Changes in the accrued product warranty obligation were as follows: 2018 2017 2016 (In thousands) Balance at the beginning of the year $ 22,872 $ 22,007 $ 22,761 Accruals for warranties issued during the year 13,897 15,951 16,046 Settlements made during the year (14,509 ) (17,854 ) (17,732 ) Warranty accruals related to acquired businesses and other during the year 1,222 2,768 932 Balance at the end of the year $ 23,482 $ 22,872 $ 22,007

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Assets Measured on Recurring Basis	The following table provides the Company’s assets that are measured at fair value on a recurring basis, consistent with the fair value hierarchy, at December 31: 2018 2017 Fair Value Fair Value (In thousands) Fixed-income investments $ 7,655 $ 8,060
Fair Value Disclosures of Financial Instrument Liabilities	The following table provides the estimated fair values of the Company’s financial instrument liabilities, for which fair value is measured for disclosure purposes only, compared to the recorded amounts at December : 2018 2017 Recorded Amount Fair Value Recorded Amount Fair Value (In thousands) Long-term debt, net (including current portion) $ (2,378,809 ) $ (2,368,676 ) $ (2,174,289 ) $ (2,210,466 )

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Allocation of Aggregate Purchase Price of Acquired Net Assets	The following table represents the allocation of the aggregate purchase price for the net assets of the 2018 acquisitions based on their estimated fair values at acquisition (in millions): Telular Other Total Property, plant and equipment $ 54.7 $ 19.9 $ 74.6 Goodwill 214.7 320.5 535.2 Other intangible assets 265.2 257.6 522.8 Long-term liabilities — (7.9 ) (7.9 ) Deferred income taxes (28.0 ) (42.0 ) (70.0 ) Net working capital and other (1) 16.1 58.5 74.6 Total cash paid $ 522.7 $ 606.6 $ 1,129.3 (1) Includes $51.0 million in accounts receivable, whose fair value, contractual cash flows and expected cash flows are approximately equal.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amounts of Goodwill by Segment	The changes in the carrying amounts of goodwill by segment were as follows: EIG EMG Total (In millions) Balance at December 31, 2016 $ 1,817.0 $ 1,002.0 $ 2,819.0 Goodwill acquired 225.6 — 225.6 Purchase price allocation adjustments and other 0.5 0.6 1.1 Foreign currency translation adjustments 33.9 36.0 69.9 Balance at December 31, 2017 2,077.0 1,038.6 3,115.6 Goodwill acquired 396.2 139.0 535.2 Purchase price allocation adjustments and other (1.6 ) — (1.6 ) Foreign currency translation adjustments (19.6 ) (17.6 ) (37.2 ) Balance at December 31, 2018 $ 2,452.0 $ 1,160.0 $ 3,612.0
Other Intangible Assets	Other intangible assets were as follows at December 31: 2018 2017 (In thousands) Definite-lived intangible assets (subject to amortization): Patents $ 51,348 $ 52,548 Purchased technology 405,204 328,301 Customer lists 1,966,709 1,621,652 2,423,261 2,002,501 Accumulated amortization: Patents (37,768 ) (36,998 ) Purchased technology (127,363 ) (110,298 ) Customer lists (538,504 ) (450,814 ) (703,635 ) (598,110 ) Net intangible assets subject to amortization 1,719,626 1,404,391 Indefinite-lived intangible assets (not subject to amortization): Trademarks and trade names 684,145 608,974 $ 2,403,771 $ 2,013,365

Other Consolidated Balance Sh_2

Other Consolidated Balance Sheet Information (Tables)	12 Months Ended
	Dec. 31, 2018
Text Block [Abstract]
Other Consolidated Balance Sheet Information	December 31, 2018 2017 (In thousands) INVENTORIES, NET Finished goods and parts $ 107,289 $ 84,789 Work in process 117,899 107,362 Raw materials and purchased parts 399,556 348,353 $ 624,744 $ 540,504 PROPERTY, PLANT AND EQUIPMENT, NET Land $ 41,751 $ 42,851 Buildings 315,250 295,023 Machinery and equipment 1,022,362 923,394 1,379,363 1,261,268 Less: Accumulated depreciation (825,233 ) (767,972 ) $ 554,130 $ 493,296 ACCRUED LIABILITIES Employee compensation and benefits $ 150,006 $ 151,435 Product warranty obligation 23,482 22,872 Restructuring 24,149 30,046 Contingent purchase price 3,000 25,500 Other 113,794 128,698 $ 314,431 $ 358,551 2018 2017 2016 (In thousands) ALLOWANCES FOR POSSIBLE LOSSES ON ACCOUNTS RECEIVABLE Balance at the beginning of the year $ 10,401 $ 10,257 $ 8,555 Additions charged to expense 1,667 2,800 4,124 Write-offs (2,335 ) (3,208 ) (2,304 ) Foreign currency translation adjustments and other (463 ) 552 (118 ) Balance at the end of the year $ 9,270 $ 10,401 $ 10,257

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Components of Income before Income Taxes and Details of Provision for Income Taxes	The components of income before income taxes and the details of the provision for income taxes were as follows for the years ended December 31: 2018 2017 2016 (In thousands) Income before income taxes: Domestic $ 555,077 $ 447,853 $ 397,215 Foreign 432,668 348,876 295,888 Total $ 987,745 $ 796,729 $ 693,103 Provision for income taxes: Current: Federal $ 204,712 $ 127,874 $ 116,898 Foreign 51,686 71,846 63,170 State 27,096 6,744 6,509 Total current 283,494 206,464 186,577 Deferred: Federal (62,095 ) (97,465 ) 5,273 Foreign (3,872 ) 6,204 (8,434 ) State (7,715 ) 56 (2,471 ) Total deferred (73,682 ) (91,205 ) (5,632 ) Total provision $ 209,812 $ 115,259 $ 180,945
Components of Deferred Tax (Asset) Liability	Significant components of the deferred tax (asset) liability were as follows at December 31: 2018 2017 (In thousands) Noncurrent deferred tax (asset) liability: Differences in basis of property and accelerated depreciation $ 46,103 $ 39,816 Reserves not currently deductible (41,159 ) (42,966 ) Pensions 29,624 11,452 Differences in basis of intangible assets and accelerated amortization 554,597 455,690 Net operating loss carryforwards (52,142 ) (10,376 ) Share-based compensation (15,399 ) (13,434 ) Unremitted earnings 12,598 84,356 Other (24,492 ) (23,176 ) 509,730 501,362 Less: Valuation allowance 8,634 3,100 518,364 504,462 Portion included in noncurrent assets 9,972 8,064 Gross noncurrent deferred tax liability 528,336 512,526 Net deferred tax liability $ 528,336 $ 512,526
Reconciliation of Effective Tax Rate to U.S. Federal Statutory Rate	The Company’s effective tax rate reconciles to the U.S. Federal statutory rate as follows for the years ended December 31: 2018 2017 2016 U.S. Federal statutory rate 21.0 % 35.0 % 35.0 % State income taxes, net of federal income tax benefit 1.2 0.4 0.6 Foreign operations, net (0.1 ) (6.8 ) (7.1 ) U.S. Benefits for Manufacturing, Export and credits (1.8 ) (1.8 ) (2.4 ) Uncertain Tax Items 1.7 0.4 (0.4 ) Stock compensation (0.5 ) (1.5 ) 0.2 Net deferred tax revaluation (0.1 ) (23.3 ) — US Tax on Foreign Earnings (0.1 ) 11.9 — Other (0.1 ) 0.2 0.2 Consolidated effective tax rate 21.2 % 14.5 % 26.1 %
Reconciliation of Liability for Uncertain Tax Positions	The following is a reconciliation of the liability for uncertain tax positions at December : 2018 2017 2016 (In millions) Balance at the beginning of the year $ 60.3 $ 57.9 $ 63.8 Additions for tax positions related to the current year 21.8 10.0 5.5 Additions for tax positions of prior years 53.5 3.1 1.5 Reductions for tax positions of prior years (3.9 ) (2.8 ) (3.6 ) Reductions related to settlements with taxing authorities — — (3.4 ) Reductions due to statute expirations (12.4 ) (7.9 ) (5.9 ) Balance at the end of the year $ 119.3 $ 60.3 $ 57.9

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Long-term Debt	Long-term debt, net consisted of the following at December 31: 2018 2017 (In thousands) U.S. dollar 6.35% senior notes due July 2018 $ — $ 80,000 U.S. dollar 7.08% senior notes due September 2018 — 160,000 U.S. dollar 7.18% senior notes due December 2018 — 65,000 U.S. dollar 6.30% senior notes due December 2019 100,000 100,000 U.S. dollar 3.73% senior notes due September 2024 300,000 300,000 U.S. dollar 3.91% senior notes due June 2025 50,000 50,000 U.S. dollar 3.96% senior notes due August 2025 100,000 100,000 U.S. dollar 4.18% senior notes due December 2025 275,000 — U.S. dollar 3.83% senior notes due September 2026 100,000 100,000 U.S. dollar 4.32% senior notes due December 2027 150,000 — U.S. dollar 4.37% senior notes due December 2028 50,000 — U.S. dollar 3.98% senior notes due September 2029 100,000 100,000 U.S. dollar 4.45% senior notes due August 2035 50,000 50,000 British pound 4.68% senior note due September 2020 102,082 108,180 British pound 2.59% senior note due November 2028 191,405 202,840 British pound 2.70% senior note due November 2031 95,700 101,420 Euro 1.34% senior notes due October 2026 343,666 360,620 Euro 1.71% senior notes due December 2027 85,916 — Euro 1.53% senior notes due October 2028 229,108 240,414 Swiss franc 2.44% senior note due December 2021 55,932 56,452 Revolving credit facility borrowings 260,000 — Other, principally foreign 2,278 4,589 Less: Debt issuance costs (8,374 ) (5,226 ) Total debt, net 2,632,713 2,174,289 Less: Current portion, net (358,876 ) (308,123 ) Total long-term debt, net $ 2,273,837 $ 1,866,166

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Total Share-Based Compensation Expense	Total share-based compensation expense was as follows for the years ended December 31: 2018 2017 2016 (In thousands) Stock option expense $ 11,390 $ 9,895 $ 9,984 Restricted stock expense 14,400 15,196 12,046 PRSU expense 1,525 — — Total pre-tax expense $ 27,315 $ 25,091 $ 22,030
Weighted Average Assumptions Used for Estimating Fair Values of Stock Options Granted	The following weighted average assumptions were used in the Black-Scholes-Merton model to estimate the fair values of stock options granted during the years indicated: 2018 2017 2016 Expected volatility 17.3 % 18.0 % 21.8 % Expected term (years) 5.0 5.0 5.0 Risk-free interest rate 2.81 % 1.94 % 1.23 % Expected dividend yield 0.76 % 0.60 % 0.77 % Black-Scholes-Merton fair value per stock option granted $ 14.12 $ 11.05 $ 9.14
Summary of Stock Option Activity and Related Information	The following is a summary of the Company’s stock option activity and related information for the year ended December , : Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life Aggregate Intrinsic Value (In thousands) (Years) (In millions) Outstanding at the beginning of the year 5,583 $ 48.99 Granted 885 73.45 Exercised (698 ) 42.35 Forfeited (140 ) 56.55 Expired (1 ) 42.98 Outstanding at the end of the year 5,629 $ 53.46 4.2 $ 85.2 Exercisable at the end of the year 3,135 $ 47.19 2.6 $ 64.3
Summary of Nonvested Stock Option Activity and Related Information	The following is a summary of the Company’s nonvested stock option activity and related information for the year ended December 31, 2018: Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested stock options outstanding at the beginning of the year 2,699 $ 10.47 Granted 885 14.12 Vested (950 ) 10.61 Forfeited (140 ) 10.81 Nonvested stock options outstanding at the end of the year 2,494 $ 11.69
Summary of Nonvested Restricted Stock Activity and Related Information	The following is a summary of the Company’s restricted stock activity and related information for the year ended December , : Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested restricted stock outstanding at the beginning of the year 932 $ 53.53 Granted 238 73.66 Vested (221 ) 52.74 Forfeited (58 ) 55.84 Nonvested restricted stock outstanding at the end of the year 891 $ 58.98

Retirement Plans and Other Po_2

Retirement Plans and Other Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2018
Net Projected Benefit Obligation and Fair Value of Plan Assets for Funded and Unfunded Defined Benefit Plans	The following tables set forth the changes in net projected benefit obligation and the fair value of plan assets for the funded and unfunded defined benefit plans for the years ended December 31: U.S. Defined Benefit Pension Plans: 2018 2017 (In thousands) Change in projected benefit obligation: Net projected benefit obligation at the beginning of the year $ 520,376 $ 498,850 Service cost 3,777 3,538 Interest cost 19,183 20,693 Actuarial (gains) losses (43,163 ) 26,922 Gross benefits paid (30,127 ) (29,627 ) Acquisition 1,460 — Net projected benefit obligation at the end of the year $ 471,506 $ 520,376 Change in plan assets: Fair value of plan assets at the beginning of the year $ 619,993 $ 517,073 Actual return on plan assets (39,022 ) 92,058 Employer contributions 541 40,489 Gross benefits paid (30,127 ) (29,627 ) Acquisition 802 — Fair value of plan assets at the end of the year $ 552,187 $ 619,993 Foreign Defined Benefit Pension Plans: 2018 2017 (In thousands) Change in projected benefit obligation: Net projected benefit obligation at the beginning of the year $ 284,178 $ 258,297 Service cost 3,102 3,600 Interest cost 6,495 6,732 Foreign currency translation adjustments (15,568 ) 26,457 Employee contributions 108 228 Actuarial gains (4,674 ) (1,563 ) Expenses paid from assets (572 ) (608 ) Gross benefits paid (11,114 ) (8,964 ) Plan amendments 6,808 (1 ) Net projected benefit obligation at the end of the year $ 268,763 $ 284,178 Change in plan assets: Fair value of plan assets at the beginning of the year $ 226,968 $ 188,935 Actual return on plan assets (11,171 ) 13,869 Employer contributions 4,521 14,307 Employee contributions 108 228 Foreign currency translation adjustments (11,939 ) 19,201 Expenses paid from assets (572 ) (608 ) Gross benefits paid (11,114 ) (8,964 ) Fair value of plan assets at the end of the year $ 196,801 $ 226,968
Accumulated Benefit Obligation ("ABO")	The accumulated benefit obligation consisted of the following at December 31: U.S. Defined Benefit Pension Plans: 2018 2017 (In thousands) Funded plans $ 456,319 $ 503,309 Unfunded plans 5,453 6,046 Total $ 461,772 $ 509,355 Foreign Defined Benefit Pension Plans: 2018 2017 (In thousands) Funded plans $ 220,842 $ 235,787 Unfunded plans 39,459 39,531 Total $ 260,301 $ 275,318
Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets	The projected benefit obligation, accumulated benefit obligation and fair value of plan assets for pension plans with a projected benefit obligation in excess of plan assets and pension plans with an accumulated benefit obligation in excess of plan assets were as follows at December : U.S. Defined Benefit Pension Plans: Projected Benefit Obligation Exceeds Fair Value of Assets Accumulated Benefit Obligation Exceeds Fair Value of Assets 2018 2017 2018 2017 (In thousands) Benefit obligation $ 6,928 $ 6,046 $ 6,928 $ 6,046 Fair value of plan assets 809 — 809 — Foreign Defined Benefit Pension Plans: Projected Benefit Obligation Exceeds Fair Value of Assets Accumulated Benefit Obligation Exceeds Fair Value of Assets 2018 2017 2018 2017 (In thousands) Benefit obligation $ 268,763 $ 186,756 $ 260,301 $ 180,779 Fair value of plan assets 196,801 127,170 196,801 127,170
Funded Status of Plan and Amounts Recognized in Balance Sheet	The following table provides the amounts recognized in the consolidated balance sheet at December 31: 2018 2017 (In thousands) Funded status asset (liability): Fair value of plan assets $ 748,988 $ 846,961 Projected benefit obligation (740,269 ) (804,553 ) Funded status at the end of the year $ 8,719 $ 42,408 Amounts recognized in the consolidated balance sheet consisted of: Noncurrent asset for pension benefits (other assets) $ 86,799 $ 108,039 Current liabilities for pension benefits (1,905 ) (1,901 ) Noncurrent liability for pension benefits (76,175 ) (63,730 ) Net amount recognized at the end of the year $ 8,719 $ 42,408
Amounts Recognized in Accumulated Other Comprehensive Income, Net of Taxes	The following table provides the amounts recognized in accumulated other comprehensive income, net of taxes, at December 31: Net amounts recognized: 2018 2017 (In thousands) Net actuarial loss $ 244,511 $ 178,466 Prior service costs 4,432 (1,102 ) Transition asset 7 7 Total recognized $ 248,950 $ 177,371
Components of Net Periodic Pension Benefit Expense (Income)	The following table provides the components of net periodic pension benefit expense (income) for the years ended December 31: 2018 2017 2016 (In thousands) Defined benefit plans: Service cost $ 6,879 $ 7,138 $ 6,622 Interest cost 25,678 27,424 30,049 Expected return on plan assets (59,325 ) (53,442 ) (51,140 ) Amortization of: Net actuarial loss 12,092 14,591 10,224 Prior service costs (49 ) (47 ) (52 ) Transition asset 1 1 1 Total net periodic benefit income (14,724 ) (4,335 ) (4,296 ) Other plans: Defined contribution plans 28,829 24,280 23,881 Foreign plans and other 6,185 5,866 5,694 Total other plans 35,014 30,146 29,575 Total net pension expense $ 20,290 $ 25,811 $ 25,279
United States Pension Plan of US Entity [Member]
Weighted Average Assumptions Used to Determine Benefit Obligations	Weighted average assumptions used to determine benefit obligations at December 31: 2018 2017 U.S. Defined Benefit Pension Plans: Discount rate 4.40 % 3.75 % Rate of compensation increase (where applicable) 3.75 % 3.75 % Foreign Defined Benefit Pension Plans: Discount rate 2.59 % 2.39 % Rate of compensation increase (where applicable) 2.50 % 2.50 %
Fair Value of Plan Assets	The following is a summary of the fair value of plan assets for U.S. plans at December 31: 2018 2017 Asset Class Total Level 1 Level 2 Total Level 1 Level 2 (In thousands) Corporate debt instruments $ 2,440 $ — $ 2,440 $ 1,757 $ — $ 1,757 Corporate debt instruments – Preferred 10,967 — 10,967 12,574 — 12,574 Corporate stocks – Common 115,013 115,013 — 137,693 137,693 — Municipal bonds 488 — 488 565 — 565 Registered investment companies 279,006 279,006 — 289,693 289,693 — U.S. Government securities 362 — 362 246 — 246 Total investments 408,276 394,019 14,257 442,528 427,386 15,142 Investments measured at net asset value 143,911 — — 177,465 — — Total investments $ 552,187 $ 394,019 $ 14,257 $ 619,993 $ 427,386 $ 15,142
Foreign Defined Benefit Pension Plans [Member]
Fair Value of Plan Assets	The following is a summary of the fair value of plan assets for foreign defined benefit pension plans at December 31: 2018 2017 Asset Class Total Level 3 Total Level 3 (In thousands) Life insurance $ 18,685 $ 18,685 $ 21,294 $ 21,294 Total investments 18,685 18,685 21,294 21,294 Investments measured at net asset value 178,116 — 205,674 — Total investments $ 196,801 $ 18,685 $ 226,968 $ 21,294
Summary of Changes in Fair Value of U.S. Plans' Investments Using Significant Unobservable Inputs	The following is a summary of the changes in the fair value of the foreign plans’ level investments (fair value determined using significant unobservable inputs): Life Insurance (In thousands) Balance, December 31, 2016 $ 18,147 Actual return on assets: Unrealized gains relating to instruments still held at the end of the year 3,147 Realized gains (losses) relating to assets sold during the year — Purchases, sales, issuances and settlements, net — Balance, December 31, 2017 21,294 Actual return on assets: Unrealized losses relating to instruments still held at the end of the year (2,609 ) Realized gains (losses) relating to assets sold during the year — Purchases, sales, issuances and settlements, net — Balance, December 31, 2018 $ 18,685
Net Periodic Pension Benefit Expense [Member]
Weighted Average Assumptions Used to Determine Benefit Obligations	The following weighted average assumptions were used to determine the above net periodic pension benefit expense for the years ended December 31: 2018 2017 2016 U.S. Defined Benefit Pension Plans: Discount rate 4.40 % 4.25 % 4.80 % Expected return on plan assets 7.50 % 7.50 % 7.75 % Rate of compensation increase (where applicable) 3.75 % 3.75 % 3.75 % Foreign Defined Benefit Pension Plans: Discount rate 2.59 % 2.56 % 3.62 % Expected return on plan assets 6.52 % 6.79 % 6.95 % Rate of compensation increase (where applicable) 2.50 % 2.50 % 2.88 %

Reportable Segments and Geogr_2

Reportable Segments and Geographic Areas Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Reportable Segment Financial Information	Reportable Segment Financial Information For sales by segment, see Note 3. 2018 2017 2016 (In thousands) Operating income and income before income taxes: Segment operating income (1)(2) Electronic Instruments $ 782,144 $ 671,646 $ 571,077 Electromechanical 363,765 306,779 274,234 Total segment operating income 1,145,909 978,425 845,311 Corporate administrative expenses (70,369 ) (74,805 ) (54,332 ) Consolidated operating income 1,075,540 903,620 790,979 Interest and other expenses, net (87,795 ) (106,891 ) (97,876 ) Consolidated income before income taxes $ 987,745 $ 796,729 $ 693,103 Assets: Electronic Instruments $ 5,625,303 $ 4,803,575 Electromechanical 2,685,674 2,535,503 Total segment assets 8,310,977 7,339,078 Corporate 351,311 456,986 Consolidated assets $ 8,662,288 $ 7,796,064 Additions to property, plant and equipment (3) Electronic Instruments $ 110,858 $ 54,321 $ 45,091 Electromechanical 42,461 36,829 39,340 Total segment additions to property, plant and equipment 153,319 91,150 84,431 Corporate 3,496 3,002 1,914 Consolidated additions to property, plant and equipment $ 156,815 $ 94,152 $ 86,345 Depreciation and amortization: Electronic Instruments $ 121,709 $ 108,053 $ 104,284 Electromechanical 75,801 73,222 73,767 Total segment depreciation and amortization 197,510 181,275 178,051 Corporate 1,980 1,952 1,665 Consolidated depreciation and amortization $ 199,490 $ 183,227 $ 179,716 (1) Segment operating income represents net sales less all direct costs and expenses (including certain administrative and other expenses) applicable to each segment, but does not include interest expense. (2) Effective January 1, 2018, the Company retrospectively adopted ASU 2017-07. See Note 2. (3) Includes $74.6 million in 2018, $19.1 million in 2017 and $23.1 million in 2016 from acquired businesses.
Information about Company's Operations in Different Geographic Areas	Information about the Company’s operations in different geographic areas for the years ended December 31, 2018 and 2017 is shown below. For sales by geography, see Note 3. 2018 2017 (In thousands) Long-lived assets from continuing operations (excluding intangible assets): United States $ 380,855 $ 325,908 International (1) United Kingdom 55,527 62,643 European Union countries 78,524 65,204 Asia 11,846 12,073 Other foreign countries 27,378 27,468 Total international 173,275 167,388 Total consolidated $ 554,130 $ 493,296 (1) Represents long-lived assets of foreign-based operations only.

Restructuring Charges (Tables)

Restructuring Charges (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Schedule of Accrued Liabilities in Company's Consolidated Balance Sheet Included Amounts Related to Restructuring Charges	Accrued liabilities in the Company’s consolidated balance sheet included amounts related to the fourth quarters of 2016 and 2015 restructuring charges as follows (in millions): Fourth Quarter of 2016 Restructuring Fourth Quarter of 2015 Restructuring Balance at December 31, 2016 $ 19.2 $ 9.2 Utilization (6.4 ) (2.4 ) Foreign currency translation adjustments and other — (0.1 ) Balance at December 31, 2017 12.8 6.7 Utilization (5.5 ) (1.0 ) Foreign currency translation adjustments and other (2.1 ) (0.8 ) Balance at December 31, 2018 $ 5.2 $ 4.9

Quarterly Financial Data (Table

Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data	First Quarter Second Quarter Third Quarter Fourth Quarter Total Year (In thousands, except per share amounts) 2018 Net sales (1) $ 1,172,647 $ 1,208,935 $ 1,192,962 $ 1,271,328 $ 4,845,872 Operating income $ 258,168 $ 270,086 $ 265,266 $ 282,020 $ 1,075,540 Net income (2) $ 181,340 $ 193,860 $ 191,213 $ 211,520 $ 777,933 Basic earnings per share (2)(3) $ 0.79 $ 0.84 $ 0.83 $ 0.92 $ 3.37 Diluted earnings per share (2)(3) $ 0.78 $ 0.83 $ 0.82 $ 0.91 $ 3.34 Dividends paid per share $ 0.14 $ 0.14 $ 0.14 $ 0.14 $ 0.56 2017 Net sales $ 1,007,682 $ 1,064,604 $ 1,084,799 $ 1,143,085 $ 4,300,170 Operating income (4)(5) $ 217,447 $ 229,549 $ 230,038 $ 226,586 $ 903,620 Net income (5)(6) $ 138,926 $ 150,481 $ 153,531 $ 238,532 $ 681,470 Basic earnings per share (3)(5)(6) $ 0.61 $ 0.65 $ 0.67 $ 1.03 $ 2.96 Diluted earnings per share (3)(5)(6) $ 0.60 $ 0.65 $ 0.66 $ 1.03 $ 2.94 Dividends paid per share $ 0.09 $ 0.09 $ 0.09 $ 0.09 $ 0.36 (1) Effective January 1, 2018, the Company adopted ASC 606. See Note 3. (2) During 2018, the Company recorded a net benefit of $ 11.8 11.8 (3) The sum of quarterly earnings per share may not equal total year earnings per share due to rounding of earnings per share amounts, and differences in weighted average shares and equivalent shares outstanding for each of the periods presented. (4) Quarter and year ending 2017 operating income amounts were restated in accordance with the retrospective adoption of ASU 2017-07. See Note 2. (5) During 2017, the Company recorded pre-tax restructuring charges totaling $10.8 million, recorded in the fourth quarter of 2017. The restructuring charges had the effect of reducing net income for 2017 by $9.1 million. (6) During 2017, the Company recorded a net benefit of $ 91.6 91.6

Significant Accounting Polici_4

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Significant Accounting Policies [Line Items]
Maturity period of liquid investments	three months or less
Aggregate fair value of fixed-income mutual fund	$ 7,700	$ 8,100
Amortized cost of investment	8,500	8,200
Allowance for possible losses on receivables	$ 9,270	10,401	$ 10,257	$ 8,555
Percentage of FIFO method of inventory in total inventory	85.00%
Percentage of LIFO method of inventory in total inventory	15.00%
Excess of the FIFO value over the LIFO value	$ 28,400	22,900
Depreciation expense	85,400	82,000	74,800
Non-cash impairment charge related to intangible assets			13,900	$ 13,900
Research and development costs	141,000	130,400	112,000
Shipping and handling costs	3,186,310	2,861,370	2,585,499
Shipping and Handling [Member]
Significant Accounting Policies [Line Items]
Shipping and handling costs	$ 62,700	$ 53,100	$ 47,900
Patents and Technology [Member]
Significant Accounting Policies [Line Items]
Weighted average life	16 years
Patents and Technology [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	5 years
Patents and Technology [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	20 years
Customer Relationship [Member]
Significant Accounting Policies [Line Items]
Weighted average life	19 years
Customer Relationship [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	5 years
Customer Relationship [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	20 years
Other Acquired Intangibles [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	2 years
Other Acquired Intangibles [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Useful life, maximum	20 years
Machinery and Equipment [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	3 years
Machinery and Equipment [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	10 years
Leasehold Improvements [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	5 years
Leasehold Improvements [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	27 years
Building [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	25 years
Building [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Range of lives for depreciable assets, maximum	50 years

Significant Accounting Polici_5

Significant Accounting Policies - Number of Weighted Average Shares (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Weighted average shares:
Basic shares	230,823	230,229	232,593
Equity-based compensation plans	1,889	1,616	1,137
Diluted shares	232,712	231,845	233,730

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements - Additional Information (Detail) - Accounting Standards Update 2017-07 [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Other Expense, Net [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	$ (11.5)	$ (10.9)
Corporate Administrative Expenses [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	1.5	0.6
Cost of Sales [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	9.9	10.3
Selling, General and Administrative Expenses [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	1.5	0.6
Electronic Instruments Group [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	5.8	6.6
Electromechanical Group [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit restatement adjustments	$ 4.1	$ 3.6

Revenues - Outstanding Contract

Revenues - Outstanding Contract Asset and (Liability) Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Contract with Customer, Asset and Liability [Abstract]
Contract assets	$ 58,266	$ 32,658
Change in contract assets – increase (decrease)	25,608
Contract liabilities	146,162	$ 117,058
Change in contract liabilities – (increase) decrease	(29,104)
Net Change	$ (3,496)

Revenues - Additional Informati

Revenues - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Operations	Jan. 01, 2018USD ($)	Dec. 31, 2017USD ($)
Number of operating groups | Operations	2
Customer advanced payments	$ 137,229	$ 114,000	$ 0
Revenue, remaining performance obligation	$ 187,200
Product warranty description	<tr><td></td></tr></table>" id="sjs-B6">The Company provides limited warranties in connection with the sale of its products. The warranty periods for products sold vary among the Company&#8217;s operations, but the majority do not exceed one year.&lt;table border="0" style="width:100%; table-layout:fixed;" cellspacing="0" cellpadding="0">&lt;tr>&lt;td>&lt;/td>&lt;/tr>&lt;/table>
Product warranty period	1 year
Revenue Recognised Contract Liabilities	$ 97,000
Other Current Assets [Member]
Contract assets	14,000
Accounts Payable [Member]
Customer advanced payments	76,000
Accrued Liabilities [Member]
Customer advanced payments	26,000
Other Noncurrent Liabilities [Member]
Customer advanced payments	8,900
Other [Member]
Customer advanced payments	12,000
ASC 606 [Member] | Total Assets [Member]
Cumulative effect of adoption of ASC 606	7,900
ASC 606 [Member] | Total Liabilities [Member]
Cumulative effect of adoption of ASC 606	3,700
ASC 606 [Member] | Retained Earnings [Member]
Cumulative effect of adoption of ASC 606	$ 4,200

Revenues - Information about Op

Revenues - Information about Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2017

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Segment Reporting Information [Line Items]

Net sales

$ 1,271,328

$ 1,192,962

$ 1,208,935

$ 1,172,647

$ 1,143,085

$ 1,084,799

$ 1,064,604

$ 1,007,682

$ 4,845,872

$ 4,300,170

$ 3,840,087

United States [Member]

Segment Reporting Information [Line Items]

Net sales

2,397,332

2,086,180

1,829,341

United Kingdom [Member]

Segment Reporting Information [Line Items]

Net sales

196,590

[1]

186,534

[2]

188,700

[3]

European Union countries [Member]

Segment Reporting Information [Line Items]

Net sales

788,579

[1]

692,116

[2]

619,138

[3]

Asia [Member]

Segment Reporting Information [Line Items]

Net sales

985,182

[1]

879,426

[2]

785,868

[3]

Other foreign countries [Member]

Segment Reporting Information [Line Items]

Net sales

478,189

[1]

455,914

[2]

417,040

[3]

International [Member]

Segment Reporting Information [Line Items]

Net sales

2,448,540

[1]

2,213,990

[2]

2,010,746

[3]

Electronic Instruments Group [Member]

Segment Reporting Information [Line Items]

Net sales

3,028,959

2,690,554

2,360,281

Electronic Instruments Group [Member] | United States [Member]

Segment Reporting Information [Line Items]

Net sales

1,446,974

1,284,570

1,110,795

Electronic Instruments Group [Member] | United Kingdom [Member]

Segment Reporting Information [Line Items]

Net sales

61,513

[1]

59,319

[2]

50,880

[3]

Electronic Instruments Group [Member] | European Union countries [Member]

Segment Reporting Information [Line Items]

Net sales

389,032

[1]

327,970

[2]

287,391

[3]

Electronic Instruments Group [Member] | Asia [Member]

Segment Reporting Information [Line Items]

Net sales

780,135

[1]

685,070

[2]

611,819

[3]

Electronic Instruments Group [Member] | Other foreign countries [Member]

Segment Reporting Information [Line Items]

Net sales

351,305

[1]

333,625

[2]

299,396

[3]

Electronic Instruments Group [Member] | International [Member]

Segment Reporting Information [Line Items]

Net sales

1,581,985

[1]

1,405,984

[2]

1,249,486

[3]

Electromechanical Group [Member]

Segment Reporting Information [Line Items]

Net sales

1,816,913

1,609,616

1,479,806

Electromechanical Group [Member] | United States [Member]

Segment Reporting Information [Line Items]

Net sales

950,358

801,610

718,546

Electromechanical Group [Member] | United Kingdom [Member]

Segment Reporting Information [Line Items]

Net sales

135,077

[1]

127,215

[2]

137,820

[3]

Electromechanical Group [Member] | European Union countries [Member]

Segment Reporting Information [Line Items]

Net sales

399,547

[1]

364,146

[2]

331,747

[3]

Electromechanical Group [Member] | Asia [Member]

Segment Reporting Information [Line Items]

Net sales

205,047

[1]

194,356

[2]

174,049

[3]

Electromechanical Group [Member] | Other foreign countries [Member]

Segment Reporting Information [Line Items]

Net sales

126,884

[1]

122,289

[2]

117,644

[3]

Electromechanical Group [Member] | International [Member]

Segment Reporting Information [Line Items]

Net sales

$ 866,555

[1]

$ 808,006

[2]

$ 761,260

[3]

[1]

Includes U.S. export sales of $1,269.4 million.

[2]

Includes U.S. export sales of $1,142.3 million.

[3]

Includes U.S. export sales of $1,036.0 million.

Revenues - Major Products and S

Revenues - Major Products and Services in Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 1,271,328	$ 1,192,962	$ 1,208,935	$ 1,172,647	$ 1,143,085	$ 1,084,799	$ 1,064,604	$ 1,007,682	$ 4,845,872	$ 4,300,170	$ 3,840,087
Process And Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales									2,120,448
Aerospace and Power [Member]
Disaggregation of Revenue [Line Items]
Net sales									1,365,028
Automation and engineered solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales									1,360,396
Electronic Instruments Group [Member]
Disaggregation of Revenue [Line Items]
Net sales									3,028,959	2,690,554	2,360,281
Electronic Instruments Group [Member] | Process And Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales									2,120,448
Electronic Instruments Group [Member] | Aerospace and Power [Member]
Disaggregation of Revenue [Line Items]
Net sales									908,511
Electronic Instruments Group [Member] | Automation and engineered solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales									0
Electromechanical Group [Member]
Disaggregation of Revenue [Line Items]
Net sales									1,816,913	$ 1,609,616	$ 1,479,806
Electromechanical Group [Member] | Process And Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales									0
Electromechanical Group [Member] | Aerospace and Power [Member]
Disaggregation of Revenue [Line Items]
Net sales									456,517
Electromechanical Group [Member] | Automation and engineered solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales									$ 1,360,396

Revenues - Timing of Revenue Re

Revenues - Timing of Revenue Recognition (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue Recognition, Milestone Method [Line Items]
Net sales	$ 1,271,328	$ 1,192,962	$ 1,208,935	$ 1,172,647	$ 1,143,085	$ 1,084,799	$ 1,064,604	$ 1,007,682	$ 4,845,872	$ 4,300,170	$ 3,840,087
Products Transferred at a Point in Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									4,223,842
Products and Services Transferred over Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									622,030
Electronic Instruments Group [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									3,028,959	2,690,554	2,360,281
Electronic Instruments Group [Member] | Products Transferred at a Point in Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									2,533,718
Electronic Instruments Group [Member] | Products and Services Transferred over Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									495,241
Electromechanical Group [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									1,816,913	$ 1,609,616	$ 1,479,806
Electromechanical Group [Member] | Products Transferred at a Point in Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									1,690,124
Electromechanical Group [Member] | Products and Services Transferred over Time [Member]
Revenue Recognition, Milestone Method [Line Items]
Net sales									$ 126,789

Revenues - Changes in Accrued P

Revenues - Changes in Accrued Product Warranty Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance at the beginning of the year	$ 22,872	$ 22,007	$ 22,761
Accruals for warranties issued during the year	13,897	15,951	16,046
Settlements made during the year	(14,509)	(17,854)	(17,732)
Warranty accruals related to acquired businesses and other during the year	1,222	2,768	932
Balance at the end of the year	$ 23,482	$ 22,872	$ 22,007

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Assets Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed-income investments	$ 7,655	$ 8,060

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)Contract	Dec. 31, 2017USD ($)	Dec. 31, 2018CAD ($)Contract	Dec. 31, 2017CAD ($)
Derivative [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0	$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	$ 0	0
Number of forward contracts outstanding | Contract	0		0
Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, notional amount			$ 30	$ 83
Fair value unrealized gain	$ 1,000,000	$ 1,500,000

Fair Value Measurements - Fai_2

Fair Value Measurements - Fair Value Disclosures of Financial Instrument Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Recorded Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, net (including current portion)	$ (2,378,809)	$ (2,174,289)
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, net (including current portion)	$ (2,368,676)	$ (2,210,466)

Hedging Activities - Additional

Hedging Activities - Additional Information (Detail) - Foreign Exchange Contract [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Percentage of effectiveness on net investment hedges	100.00%
Currency remeasuresment gains (losses)	$ 50.8	$ (109.4)
British-Pound-Denominated Loans [Member]
Derivative [Line Items]
Hedge against net investment in foreign subsidiaries	389.2	412.4
Euro Loan [Member]
Derivative [Line Items]
Hedge against net investment in foreign subsidiaries	$ 658.7	$ 601

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Purchases of businesses, net of cash acquired	$ 1,129,305	$ 556,634	$ 391,419
Business Combination, Contingent Consideration, Liability	30,000
Rauland-Borg [Member]
Business Acquisition [Line Items]
Maximum contingent payment for acquisition	30,000
Rauland-Borg [Member] | Fair Value, Inputs, Level 3 [Member]
Business Acquisition [Line Items]
Contingent payment liability	25,500
Rauland, MOCON and Arizona Instrument [Member]
Business Acquisition [Line Items]
Purchases of businesses, net of cash acquired		$ 556,600
Brookfield Engineering Laboratories and ESP/SurgeX, HS Foils and Nu Instruments and Laserage Technology Corporation [Member]
Business Acquisition [Line Items]
Purchases of businesses, net of cash acquired			$ 391,400
2018 Consolidated Acquisition [Member]
Business Acquisition [Line Items]
Purchases of businesses, net of cash acquired	1,129,300
Business acquisition, goodwill, expected tax deductible amount	94,000
Total other intangible assets acquired	522,800
Finite-lived intangible assets acquired	440,500
Future amortization expense, year one	26,900
Future amortization expense, year two	26,900
Future amortization expense, year three	26,900
Future amortization expense, year four	26,900
Future amortization expense, year five	26,900
2018 Consolidated Acquisition [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Indefinite-lived intangible trade names acquired	82,300
2018 Consolidated Acquisition [Member] | Customer Relationship [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 359,800
2018 Consolidated Acquisition [Member] | Customer Relationship [Member] | Minimum [Member]
Business Acquisition [Line Items]
Amortization period for finite-lived intangible asset	18 years
2018 Consolidated Acquisition [Member] | Purchased Technology [Member]
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 80,700
2018 Consolidated Acquisition [Member] | Purchased Technology [Member] | Minimum [Member]
Business Acquisition [Line Items]
Amortization period for finite-lived intangible asset	10 years
2018 Consolidated Acquisition [Member] | Purchased Technology [Member] | Maximum [Member]
Business Acquisition [Line Items]
Amortization period for finite-lived intangible asset	20 years

Acquisitions - Allocation of Ag

Acquisitions - Allocation of Aggregate Purchase Price of Acquired Net Assets (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 3,612,033	$ 3,115,619	$ 2,819,000
Total cash paid		1,129,305	$ 556,634	$ 391,419
2018 Consolidated Acquisition [Member]
Business Acquisition [Line Items]
Property, plant and equipment		74,600
Goodwill		535,200
Other intangible assets		522,800
Long-term liabilities		(7,900)
Deferred income taxes		(70,000)
Net working capital and other	[1]	74,600
Total cash paid		1,129,300
2018 Consolidated Acquisition [Member] | Telular Acquisition [Member]
Business Acquisition [Line Items]
Property, plant and equipment		54,700
Goodwill		214,700
Other intangible assets		265,200
Long-term liabilities		0
Deferred income taxes		(28,000)
Net working capital and other	[1]	16,100
Total cash paid		522,700
2018 Consolidated Acquisition [Member] | Other Acquisition [Member]
Business Acquisition [Line Items]
Property, plant and equipment		19,900
Goodwill		320,500
Other intangible assets		257,600
Long-term liabilities		(7,900)
Deferred income taxes		(42,000)
Net working capital and other	[1]	58,500
Total cash paid		$ 606,600
[1]	Includes $51.0 million in accounts receivable, whose fair value, contractual cash flows and expected cash flows are approximately equal.

Acquisitions - Allocation of _2

Acquisitions - Allocation of Aggregate Purchase Price of Acquired Net Assets (Parenthetical) (Detail) $ in Millions	Dec. 31, 2018USD ($)
2018 Consolidated Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable included in purchase price	$ 51

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in Carrying Amounts of Goodwill by Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill, beginning balance	$ 3,115,619	$ 2,819,000
Goodwill acquired	535,200	225,600
Purchase price allocation adjustments and other	(1,600)	1,100
Foreign currency translation adjustments	(37,200)	69,900
Goodwill, ending balance	3,612,033	3,115,619
Electronic Instruments Group [Member]
Goodwill [Line Items]
Goodwill, beginning balance	2,077,000	1,817,000
Goodwill acquired	396,200	225,600
Purchase price allocation adjustments and other	(1,600)	500
Foreign currency translation adjustments	(19,600)	33,900
Goodwill, ending balance	2,452,000	2,077,000
Electromechanical Group [Member]
Goodwill [Line Items]
Goodwill, beginning balance	1,038,600	1,002,000
Goodwill acquired	139,000	0
Purchase price allocation adjustments and other	0	600
Foreign currency translation adjustments	(17,600)	36,000
Goodwill, ending balance	$ 1,160,000	$ 1,038,600

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	$ 2,423,261	$ 2,002,501
Accumulated amortization	(703,635)	(598,110)
Net intangible assets subject to amortization	1,719,626	1,404,391
Total	2,403,771	2,013,365
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (not subject to amortization)	684,145	608,974
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	51,348	52,548
Accumulated amortization	(37,768)	(36,998)
Purchased Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	405,204	328,301
Accumulated amortization	(127,363)	(110,298)
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets (subject to amortization)	1,966,709	1,621,652
Accumulated amortization	$ (538,504)	$ (450,814)

Goodwill and Intangible Assets

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Non-cash impairment charge related to intangible assets			$ 13.9	$ 13.9
Amortization expense	$ 114.1	$ 101.2	104.9
Future amortization expense, 2019	133
Future amortization expense, 2020	133
Future amortization expense, 2021	133
Future amortization expense, 2022	133
Future amortization expense, 2023	$ 133
Cost of Sales, Excluding Depreciation [Member] | Trade Names [Member]
Goodwill [Line Items]
Non-cash impairment charge related to intangible assets			13.9
Cost of Sales, Excluding Depreciation [Member] | Trade Names [Member] | Electronic Instruments Group [Member]
Goodwill [Line Items]
Non-cash impairment charge related to intangible assets			9.2
Cost of Sales, Excluding Depreciation [Member] | Trade Names [Member] | Electromechanical Group [Member]
Goodwill [Line Items]
Non-cash impairment charge related to intangible assets			$ 4.7

Other Consolidated Balance Sh_3

Other Consolidated Balance Sheet Information - Other Consolidated Balance Sheet Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INVENTORIES, NET
Finished goods and parts	$ 107,289	$ 84,789
Work in process	117,899	107,362
Raw materials and purchased parts	399,556	348,353
Total inventories	624,744	540,504
PROPERTY, PLANT AND EQUIPMENT, NET
Land	41,751	42,851
Buildings	315,250	295,023
Machinery and equipment	1,022,362	923,394
Property, plant and equipment, gross	1,379,363	1,261,268
Less: Accumulated depreciation	(825,233)	(767,972)
Property, plant and equipment, Net	554,130	493,296
ACCRUED LIABILITIES
Employee compensation and benefits	150,006	151,435
Product warranty obligation	23,482	22,872	$ 22,007	$ 22,761
Restructuring	24,149	30,046
Contingent purchase price	3,000	25,500
Other	113,794	128,698
Total accrued liabilities	314,431	358,551
ALLOWANCES FOR POSSIBLE LOSSES ON ACCOUNTS
Balance at the beginning of the year	10,401	10,257	8,555
Additions charged to expense	1,667	2,800	4,124
Write-offs	(2,335)	(3,208)	(2,304)
Foreign currency translation adjustments and other	(463)	552	(118)
Balance at the end of the year	$ 9,270	$ 10,401	$ 10,257

Income Taxes - Components of In

Income Taxes - Components of Income before Income Taxes and Details of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income before income taxes:
Domestic	$ 555,077	$ 447,853	$ 397,215
Foreign	432,668	348,876	295,888
Income before income taxes	987,745	796,729	693,103
Current:
Federal	204,712	127,874	116,898
Foreign	51,686	71,846	63,170
State	27,096	6,744	6,509
Total current	283,494	206,464	186,577
Deferred:
Federal	(62,095)	(97,465)	5,273
Foreign	(3,872)	6,204	(8,434)
State	(7,715)	56	(2,471)
Total deferred	(73,682)	(91,205)	(5,632)
Total provision	$ 209,812	$ 115,259	$ 180,945

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax (Asset) Liability (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Noncurrent deferred tax asset liability
Net operating loss carryforwards	$ (52,100)
Noncurrent deferred tax (asset) liability	509,730	$ 501,362
Less: Valuation allowance	8,634	3,100
Gross noncurrent deferred tax liability	518,364	504,462
Net noncurrent deferred tax liability	528,336	512,526
Net deferred tax liability	528,336	512,526
Noncurrent Assets [Member]
Noncurrent deferred tax asset liability
Gross noncurrent deferred tax liability	9,972	8,064
Non Current [Member]
Noncurrent deferred tax asset liability
Differences in basis of property and accelerated depreciation	46,103	39,816
Reserves not currently deductible	(41,159)	(42,966)
Pensions	29,624	11,452
Differences in basis of intangible assets and accelerated amortization	554,597	455,690
Net operating loss carryforwards	(52,142)	(10,376)
Share-based compensation	(15,399)	(13,434)
Unremitted earnings	12,598	84,356
Other	$ (24,492)	$ (23,176)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate to U.S. Federal Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S. Federal statutory rate	21.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit	1.20%	0.40%	0.60%
Foreign operations, net	(0.10%)	(6.80%)	(7.10%)
U.S. Benefits for Manufacturing, Export and credits	(1.80%)	(1.80%)	(2.40%)
Uncertain Tax Items	1.70%	0.40%	(0.40%)
Stock compensation	(0.50%)	(1.50%)	0.20%
Net deferred tax revaluation	(0.10%)	(23.30%)
US Tax on Foreign Earnings	(0.10%)	11.90%
Other	(0.10%)	0.20%	0.20%
Consolidated effective tax rate	21.20%	14.50%	26.10%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
U.S. corporate income tax			21.00%	35.00%	35.00%
Income tax benefit	$ 11,800	$ 91,600	$ 11,800	$ 91,600
Income tax benefit from remeasurement of net deferred tax liabilities			1,400
Tax liability		94,200
Net operating loss carryforwards	52,100		52,100
Operating loss carryforwards	34,400		34,400
Tax benefits related to tax credit carryforwards	7,900		7,900
Valuation allowance			5,500
Gross unrecognized tax benefits	119,300	60,300	119,300	60,300	$ 57,900	$ 63,800
The total amount of unrecognized tax benefits that would impact tax rate, if recognized	73,100	51,700	73,100	51,700
Interest and penalties accrued related to uncertain tax positions	14,000	9,700	14,000	9,700
Expense (Benefit) of interest and penalties			$ 8,900	900	1,800
Period between open tax years subject to tax audit			three and six years
Portion of tax liability incurred in domestic country			60.00%
Additions of tax, interest and penalties related to uncertain tax positions	81,600	15,400	$ 81,600	15,400
Tax and interest related to statute expirations and settlement of prior uncertain positions reversed	18,400	12,100	18,400	12,100
Amount of tax, interest and penalties classified as a noncurrent liability	131,700		131,700
Increase of income tax expense			23,800
Repatriated amount			555,000
Acquired Loss And Carry Forwards	2,000		2,000
Provision for income tax			209,812	115,259	$ 180,945
Repatriation of foreign earnings			10,400
Deferred Tax liability			1,400
cash tax obligation	66,800		66,800
Tax payable	48,597	34,660	48,597	34,660
Increase Decrease In Deferred Liabilities			59,000
Federal [Member]
Income Tax Contingency [Line Items]
Income tax benefit from remeasurement of net deferred tax liabilities		185,800
Tax credit carryforwards	2,100		2,100
Tax credit carryforwards valuation allowance	1,600		1,600
Deferred Tax liability		185,800
Foreign [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	1,100		1,100
Operating loss carryforwards valuation allowance	1,100		1,100
Deferred Income Tax Assets Net		$ 13,300		$ 13,300
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards	16,600		16,600
Tax credit carryforwards	5,800		5,800
Tax credit carryforwards valuation allowance	1,500		1,500
Valuation allowance			900
Deferred Income Tax Assets Net	$ 12,600		12,600
Non deductible interest expense			$ 3,500

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Liability for Uncertain Tax Positions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Balance at the beginning of the year	$ 60.3	$ 57.9	$ 63.8
Additions for tax positions related to the current year	21.8	10	5.5
Additions for tax positions of prior years	53.5	3.1	1.5
Reductions for tax positions of prior years	(3.9)	(2.8)	(3.6)
Reductions related to settlements with taxing authorities			(3.4)
Reductions due to statute expirations	(12.4)	(7.9)	(5.9)
Balance at the end of the year	$ 119.3	$ 60.3	$ 57.9

Debt - Long-term Debt (Detail)

Debt - Long-term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Less: Debt issuance costs	$ (8,374)	$ (5,226)
Total debt, net	2,632,713	2,174,289
Less: Current portion, net	(358,876)	(308,123)
Total long-term debt, net	2,273,837	1,866,166
6.35% Senior Notes Due July 2018 [Member]
Debt Instrument [Line Items]
Total debt, gross		80,000
7.08% Senior Notes Due September 2018 [Member]
Debt Instrument [Line Items]
Total debt, gross		160,000
7.18% Senior Notes Due December 2018 [Member]
Debt Instrument [Line Items]
Total debt, gross		65,000
6.30% Senior Notes Due December 2019 [Member]
Debt Instrument [Line Items]
Total debt, gross	100,000	100,000
3.73% Senior Notes Due September 2024 [Member]
Debt Instrument [Line Items]
Total debt, gross	300,000	300,000
3.91% Senior Notes Due June 2025 [Member]
Debt Instrument [Line Items]
Total debt, gross	50,000	50,000
3.96% Senior Notes Due August 2025 [Member]
Debt Instrument [Line Items]
Total debt, gross	100,000	100,000
4.18% senior notes due December 2025 [Member]
Debt Instrument [Line Items]
Total debt, gross	275,000
3.83% Senior Notes Due September 2026 [Member]
Debt Instrument [Line Items]
Total debt, gross	100,000	100,000
4.32% senior notes due December 2027 [Member]
Debt Instrument [Line Items]
Total debt, gross	150,000
4.37% senior notes due December 2028 [Member]
Debt Instrument [Line Items]
Total debt, gross	50,000
3.98% Senior Notes Due September 2029 [Member]
Debt Instrument [Line Items]
Total debt, gross	100,000	100,000
4.45% Senior Notes Due August 2035 [Member]
Debt Instrument [Line Items]
Total debt, gross	50,000	50,000
British Pound 4.68% Senior Note Due September 2020 [Member]
Debt Instrument [Line Items]
Total debt, gross	102,082	108,180
British Pound 2.59% Senior Note Due November 2028 [Member]
Debt Instrument [Line Items]
Total debt, gross	191,405	202,840
British Pound 2.70% Senior Note Due November 2031 [Member]
Debt Instrument [Line Items]
Total debt, gross	95,700	101,420
Euro 1.34% Senior Notes Due October 2026 [Member]
Debt Instrument [Line Items]
Total debt, gross	343,666	360,620
Euro 1.71% senior notes due December 2027
Debt Instrument [Line Items]
Total debt, gross	85,916
Euro 1.53% senior notes due October 2028 [Member]
Debt Instrument [Line Items]
Total debt, gross	229,108	240,414
Swiss Franc 2.44% Senior Note Due December 2021 [Member]
Debt Instrument [Line Items]
Total debt, gross	55,932	56,452
Revolving credit facility borrowings [Member]
Debt Instrument [Line Items]
Total debt, gross	260,000
Other Principally Foreign [Member]
Debt Instrument [Line Items]
Total debt, gross	$ 2,278	$ 4,589

Debt - Long-term Debt (Parenthe

Debt - Long-term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Aug. 31, 2015	Jun. 30, 2015	Sep. 30, 2014	Dec. 31, 2011	Sep. 30, 2010	Dec. 31, 2008	Sep. 30, 2008	Jul. 31, 2008	Dec. 31, 2007
6.35% Senior Notes Due July 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.35%									6.35%
Maturity date of senior notes	Jul. 31, 2018
7.08% Senior Notes Due September 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.08%	7.08%							7.08%
Maturity date of senior notes	Sep. 30, 2018
7.18% Senior Notes Due December 2018 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	7.18%							7.18%
Maturity date of senior notes	Dec. 31, 2018
6.30% Senior Notes Due December 2019 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	6.30%										6.30%
Maturity date of senior notes	Dec. 31, 2019
3.73% Senior Notes Due September 2024 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.73%				3.73%
Maturity date of senior notes	Sep. 30, 2024
3.91% Senior Notes Due June 2025 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.91%			3.91%
Maturity date of senior notes	Jun. 30, 2025
3.96% Senior Notes Due August 2025 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.96%		3.96%
Maturity date of senior notes	Aug. 31, 2025
4.18% senior notes due December 2025 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.18%
Maturity date of senior notes	Dec. 31, 2025
3.83% Senior Notes Due September 2026 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.83%				3.83%
Maturity date of senior notes	Sep. 30, 2026
4.32% senior notes due December 2027 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.32%
Maturity date of senior notes	Dec. 31, 2027
4.37% senior notes due December 2028 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.37%
Maturity date of senior notes	Dec. 31, 2028
3.98% Senior Notes Due September 2029 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	3.98%				3.98%
Maturity date of senior notes	Sep. 30, 2029
4.45% Senior Notes Due August 2035 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.45%		4.45%
Maturity date of senior notes	Aug. 31, 2035
British Pound 4.68% Senior Note Due September 2020 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	4.68%						4.68%
Maturity date of senior notes	Sep. 30, 2020
British Pound 2.59% Senior Note Due November 2028 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	2.59%
Maturity date of senior notes	Nov. 30, 2028
British Pound 2.70% Senior Note Due November 2031 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	2.70%
Maturity date of senior notes	Nov. 30, 2031
Euro 1.34% Senior Notes Due October 2026 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	1.34%
Maturity date of senior notes	Oct. 31, 2026
Euro 1.71% senior notes due December 2027
Debt Instrument [Line Items]
Interest rate on senior notes	1.71%
Maturity date of senior notes	Dec. 31, 2027
Euro 1.53% senior notes due October 2028 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	1.53%
Maturity date of senior notes	Oct. 31, 2028
Swiss Franc 2.44% Senior Note Due December 2021 [Member]
Debt Instrument [Line Items]
Interest rate on senior notes	2.44%					2.44%
Maturity date of senior notes	Dec. 31, 2021

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2008	Sep. 30, 2008
Debt Instrument [Line Items]
Maturities of long-term debt outstanding in 2020	$ 102,100,000
Maturities of long-term debt outstanding in 2021	55,900,000
Maturities of long-term debt outstanding in 2022	0
Maturities of long-term debt outstanding in 2023	0
Maturities of long-term debt outstanding in 2024	300,000,000
Maturities of long-term debt outstanding in 2025 and thereafter	1,815,800,000
7.18% Senior Notes Due December 2018 [Member]
Debt Instrument [Line Items]
Total debt, net	$ 65,000,000			$ 65,000,000
Interest rate on senior notes	7.18%			7.18%
6.35% Senior Notes Due September 2018 [Member]
Debt Instrument [Line Items]
Total debt, net		$ 80,000,000
Interest rate on senior notes		6.35%
7.08% Senior Notes Due September 2018 [Member]
Debt Instrument [Line Items]
Total debt, net		$ 160,000,000			$ 160,000,000
Interest rate on senior notes	7.08%	7.08%			7.08%
6.20% Senior Notes Due December 2017 [Member]
Debt Instrument [Line Items]
Total debt, net			$ 270,000,000
Interest rate on senior notes			6.20%

Debt - Additional Information 1

Debt - Additional Information 1 (Detail)

12 Months Ended

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2018EUR (€)

Sep. 30, 2018USD ($)

Nov. 30, 2016GBP (£)

Oct. 31, 2016EUR (€)

Aug. 31, 2015USD ($)

Jun. 30, 2015USD ($)

Sep. 30, 2014USD ($)

Dec. 31, 2011CHF (SFr)

Sep. 30, 2010GBP (£)

Dec. 31, 2008USD ($)

Sep. 30, 2008USD ($)

Jul. 31, 2008USD ($)

Dec. 31, 2007USD ($)

6.20% Senior Notes Due December 2017 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 270,000,000

Interest rate on senior notes

6.20%

Maturity date of senior notes

Dec. 31, 2017

6.30% Senior Notes Due December 2019 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 100,000,000

Interest rate on senior notes

6.30%

6.30%

6.30%

Maturity date of senior notes

Dec. 31, 2019

6.35% Senior Notes Due July 2018 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 80,000,000

Interest rate on senior notes

6.35%

6.35%

6.35%

Maturity date of senior notes

Jul. 31, 2018

7.08% Senior Notes Due September 2018 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 160,000,000

$ 160,000,000

Interest rate on senior notes

7.08%

7.08%

7.08%

7.08%

Maturity date of senior notes

Sep. 30, 2018

7.18% Senior Notes Due December 2018 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 65,000,000

$ 65,000,000

Interest rate on senior notes

7.18%

7.18%

7.18%

Maturity date of senior notes

Dec. 31, 2018

3.73% Senior Notes Due September 2024 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 300,000,000

Interest rate on senior notes

3.73%

3.73%

3.73%

Maturity date of senior notes

Sep. 30, 2024

3.83% Senior Notes Due September 2026 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 100,000,000

Interest rate on senior notes

3.83%

3.83%

3.83%

Maturity date of senior notes

Sep. 30, 2026

3.98% Senior Notes Due September 2029 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 100,000,000

Interest rate on senior notes

3.98%

3.98%

3.98%

Maturity date of senior notes

Sep. 30, 2029

3.91% Senior Notes Due June 2025 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 50,000,000

Interest rate on senior notes

3.91%

3.91%

3.91%

Maturity date of senior notes

Jun. 30, 2025

3.96% Senior Notes Due August 2025 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 100,000,000

Interest rate on senior notes

3.96%

3.96%

3.96%

Maturity date of senior notes

Aug. 31, 2025

4.45% Senior Notes Due August 2035 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 50,000,000

Interest rate on senior notes

4.45%

4.45%

4.45%

Maturity date of senior notes

Aug. 31, 2035

British Pound 4.68% Senior Note Due September 2020 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 102,100,000

£ 80,000,000

Interest rate on senior notes

4.68%

4.68%

4.68%

Maturity date of senior notes

Sep. 30, 2020

Swiss Franc 2.44% Senior Note Due December 2021 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 55,900,000

SFr 55,000,000

Interest rate on senior notes

2.44%

2.44%

2.44%

Maturity date of senior notes

Dec. 31, 2021

Senior Notes [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 575,000,000

€ 75,000,000

Interest rate on senior notes

3.93%

3.93%

Senior Notes [Member] | 1.34% Due October 2026 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 343,700,000

€ 300,000,000

Interest rate on senior notes

1.34%

Maturity date of senior notes

Oct. 31, 2026

Senior Notes [Member] | 1.53% Due October 2028 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 229,100,000

€ 200,000,000

Interest rate on senior notes

1.53%

Maturity date of senior notes

Oct. 31, 2028

Senior Notes [Member] | 2.59% Due November 2028 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 191,400,000

£ 150,000,000

Interest rate on senior notes

2.59%

Maturity date of senior notes

Nov. 30, 2028

Senior Notes [Member] | 2.70% Due November 2031 [Member]

Debt Instrument [Line Items]

Aggregate principal amount of senior notes

$ 95,700,000

£ 75,000,000

Interest rate on senior notes

2.70%

Maturity date of senior notes

Nov. 30, 2031

Debt - Additional Information 2

Debt - Additional Information 2 (Detail) € in Millions, $ in Millions	1 Months Ended	12 Months Ended
	Jan. 21, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018EUR (€)	Dec. 31, 2017USD ($)	Dec. 31, 2018EUR (€)
Debt Instrument [Line Items]
Total borrowing capacity under revolving credit facility		$ 850
Weighted average interest rate on total debt borrowings outstanding		3.70%		4.20%	3.70%
Senior Notes [Member]
Debt Instrument [Line Items]
total debt amount		$ 575			€ 75
proceeds from funding		$ 475	€ 75	$ 85.1
rate of interest		3.93%			3.93%
Senior Notes [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
proceeds from funding	$ 100
Foreign Subsidiaries [Member]
Debt Instrument [Line Items]
Available borrowing capacity under revolving credit facility		$ 49.1		45.4
Borrowings outstanding		$ 2.3		$ 4.6
Revolving Credit Facility Borrowings [Member]
Debt Instrument [Line Items]
Revolving credit facility expiration period		5 years	5 years
Total borrowing capacity under revolving credit facility		$ 1,500
Revolving credit facility expiration date		Mar. 31, 2021	Mar. 31, 2021
Additional borrowing capacity under revolving credit facility		$ 500
Available borrowing capacity under revolving credit facility		1,705.1
Borrowings outstanding		$ 260
Percentage of weighted average interest rate on revolving credit facility		1.40%		1.61%	1.40%
Revolving Credit Facility Borrowings [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Borrowings outstanding		$ 35.1		$ 42.1

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of stock options exercised			$ 23.9	$ 41.3	$ 16.2
Total fair value of stock options vested			10.1	$ 12.4	10.8
Expected future pre-tax compensation expense, nonvested stock options			$ 20
Nonvested stock options outstanding			2,494,000	2,699,000
Weighted average period to recognize expected future pre-tax compensation expense (in years)			2 years
Stock Options Granted Prior Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			7 years
Beginning in 2018 Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			10 years
Restricted Stock Granted Prior Date [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			4 years
Non Employee Directors Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of stock options			2 years
Executive Chairman of the Board of Directors [Member] | Corporate Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax share-based compensation expense		$ 2.5
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested stock options outstanding			900,000
Weighted average period to recognize expected future pre-tax compensation expense (in years)			2 years
Vesting period			Restricted stock granted to non-employee directors generally vests two years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days.
Total fair value of vested restricted stock			$ 11.6	$ 15.8	$ 11.1
Expected future pre-tax compensation expense, nonvested restricted shares			$ 28
Weighted average fair value, per share			$ 73.66	$ 60.35
Awards granted, shares			238,000
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			Restricted stock granted to employees prior to 2018 generally vests four years after the grant date (cliff vesting) and is subject to accelerated vesting due to certain events, including doubling of the grant price of the Company’s common stock as of the close of business during any five consecutive trading days.
Performance Restricted Stock Units [Member] | Officers And Key Management Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting period	3 years
Awards granted, shares	52,000
Maximum [Member] | Performance Restricted Stock Units [Member] | Officers And Key Management Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	200.00%
Minimum [Member] | Performance Restricted Stock Units [Member] | Officers And Key Management Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting rate	0.00%

Share-Based Compensation - Tota

Share-Based Compensation - Total Share-Based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock option expense	$ 11,390	$ 9,895	$ 9,984
Restricted stock expense	14,400	15,196	12,046
PRSU expense	1,525
Total pre-tax expense	$ 27,315	$ 25,091	$ 22,030

Share-Based Compensation - Weig

Share-Based Compensation - Weighted Average Assumptions Used for Estimating Fair Values of Stock Options Granted (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility	17.30%	18.00%	21.80%
Expected term (years)	5 years	5 years	5 years
Risk-free interest rate	2.81%	1.94%	1.23%
Expected dividend yield	0.76%	0.60%	0.77%
Black-Scholes-Merton fair value per stock option granted	$ 14.12	$ 11.05	$ 9.14

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Stock Option Activity and Related Information (Detail) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Beginning balance, Outstanding, Shares | shares | shares	5,583
Granted, Shares | shares | shares	885
Exercised, Shares | shares | shares	(698)
Forfeited, Shares | shares | shares	(140)
Expired, Shares | shares | shares	(1)
Ending balance, Outstanding, Shares | shares | shares	5,629
Ending balance, Exercisable, Shares | shares | shares	3,135
Beginning balance, Outstanding, Weighted Average Exercise Price | $ / shares | $ / shares	$ 48.99
Granted, Weighted Average Exercise Price | $ / shares | $ / shares	73.45
Exercised, Weighted Average Exercise Price | $ / shares | $ / shares	42.35
Forfeited, Weighted Average Exercise Price | $ / shares | $ / shares	56.55
Expired, Weighted Average Exercise Price | $ / shares | $ / shares	42.98
Ending balance, Outstanding, Weighted Average Exercise Price | $ / shares | $ / shares	53.46
Ending balance, Exercisable, Weighted Average Exercise Price | $ / shares | $ / shares	$ 47.19
Ending balance, Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 2 months 12 days
Ending balance, Exercisable, Weighted Average Remaining Contractual Life (Years)	2 years 7 months 6 days
Ending balance, Outstanding, Aggregate Intrinsic Value | $ | $	$ 85.2
Ending balance, Exercisable, Aggregate Intrinsic Value | $ | $	$ 64.3

Share-Based Compensation - Su_2

Share-Based Compensation - Summary of Nonvested Stock Option Activity and Related Information (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Beginning balance, Nonvested, Shares	2,699
Nonvested stock options Granted, Shares	885
Nonvested stock options Vested, Shares	(950)
Nonvested stock options Forfeited, Shares	(140)
Ending balance, Nonvested, Shares	2,494	2,699
Beginning balance, Nonvested, Weighted Average Grant Date Fair Value	$ 10.47
Granted, Weighted Average Grant Date Fair Value	14.12	$ 11.05	$ 9.14
Vested, Weighted Average Grant Date Fair Value	10.61
Forfeited, Weighted Average Grant Date Fair Value	10.81
Ending balance, Nonvested, Weighted Average Grant Date Fair Value	$ 11.69	$ 10.47

Share-Based Compensation - Su_3

Share-Based Compensation - Summary of Nonvested Restricted Stock Activity and Related Information (Detail) - Restricted Shares [Member] - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Nonvested restricted stock outstanding, Shares | shares	932
Granted, Shares | shares	238
Vested, Shares | shares	(221)
Forfeited, Shares | shares	(58)
Ending balance, Nonvested restricted stock outstanding, Shares | shares	891	932
Beginning balance, Nonvested restricted stock outstanding, Weighted Average Grant Date Fair Value | $ / shares	$ 53.53
Granted, Weighted Average Grant Date Fair Value | $ / shares	73.66	$ 60.35
Vested, Weighted Average Grant Date Fair Value | $ / shares	52.74
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	55.84
Ending balance, Nonvested restricted stock outstanding, Weighted Average Grant Date Fair Value | $ / shares	$ 58.98	$ 53.53

Retirement Plans and Other Po_3

Retirement Plans and Other Postretirement Benefits - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Percentage of minimum employee contributions	20.00%
Percentage of maximum employee contributions	100.00%
Percentage of employee contributions for eligible compensation, Minimum	1.00%
Percentage of employee contributions for eligible compensation, Maximum	8.00%
Defined benefit plan contributions by employer employee match	$ 1,200
Percentage of equity securities in company common stock included in plan assets	6.30%	6.00%
Expected amount of amortization related to net actuarial losses and prior service costs	$ 16,000,000
Estimated future benefit payments, 2019	39,700,000
Estimated future benefit payments, 2020	40,400,000
Estimated future benefit payments, 2021	41,400,000
Estimated future benefit payments, 2022	41,900,000
Estimated future benefit payments, 2023	43,500,000
Estimated future benefit payments, 2024-2028	220,300,000
Amount deferred under the compensation plan, including income earned	$ 14,400,000	$ 25,400,000
Market Share of Treasury Stock Held	512,565	512,565
Market Value of Treasury Stock Held	$ 34,700,000	$ 37,100,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated future employer contributions in next fiscal year	2,000,000
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan estimated future employer contributions in next fiscal year	$ 6,000,000
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	7.50%	7.50%	7.75%
Assumed rate of return next year	7.50%
United States Pension Plan of US Entity [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	50.00%
United States Pension Plan of US Entity [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	20.00%
United States Pension Plan of US Entity [Member] | Other Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	30.00%
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term return on plan assets	6.52%	6.79%	6.95%
Assumed rate of return next year	6.52%
Foreign Defined Benefit Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	70.00%
Foreign Defined Benefit Pension Plans [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	15.00%
Foreign Defined Benefit Pension Plans [Member] | Other Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target allocations for the U.S. and foreign benefits plans	15.00%

Retirement Plans and Other Po_4

Retirement Plans and Other Postretirement Benefits - Net Projected Benefit Obligation and Fair Value of Plan Assets for Funded and Unfunded Defined Benefit Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in projected benefit obligation:
Net projected benefit obligation at the beginning of the year	$ 804,553
Service cost	6,879	$ 7,138	$ 6,622
Interest cost	25,678	27,424	30,049
Net projected benefit obligation at the end of the year	740,269	804,553
Change in plan assets:
Fair value of plan assets at the beginning of the year	846,961
Fair value of plan assets at the end of the year	748,988	846,961
United States Pension Plan of US Entity [Member]
Change in projected benefit obligation:
Net projected benefit obligation at the beginning of the year	520,376	498,850
Service cost	3,777	3,538
Interest cost	19,183	20,693
Actuarial (gains) losses	(43,163)	26,922
Gross benefits paid	(30,127)	(29,627)
Acquisition	1,460
Net projected benefit obligation at the end of the year	471,506	520,376	498,850
Change in plan assets:
Fair value of plan assets at the beginning of the year	619,993	517,073
Actual return on plan assets	(39,022)	92,058
Employer contributions	541	40,489
Gross benefits paid	(30,127)	(29,627)
Acquisition	802
Fair value of plan assets at the end of the year	552,187	619,993	517,073
Foreign Defined Benefit Pension Plans [Member]
Change in projected benefit obligation:
Net projected benefit obligation at the beginning of the year	284,178	258,297
Service cost	3,102	3,600
Interest cost	6,495	6,732
Foreign currency translation adjustments	(15,568)	26,457
Employee contributions	108	228
Actuarial (gains) losses	(4,674)	(1,563)
Expenses paid from assets	(572)	(608)
Gross benefits paid	(11,114)	(8,964)
Plan amendments	6,808	(1)
Net projected benefit obligation at the end of the year	268,763	284,178	258,297
Change in plan assets:
Fair value of plan assets at the beginning of the year	226,968	188,935
Actual return on plan assets	(11,171)	13,869
Employer contributions	4,521	14,307
Employee contributions	108	228
Foreign currency translation adjustments	(11,939)	19,201
Expenses paid from assets	(572)	(608)
Gross benefits paid	(11,114)	(8,964)
Fair value of plan assets at the end of the year	$ 196,801	$ 226,968	$ 188,935

Retirement Plans and Other Po_5

Retirement Plans and Other Postretirement Benefits - Accumulated Benefit Obligation ("ABO") (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2007
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 461,772	$ 509,355
United States Pension Plan of US Entity [Member] | Funded Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	456,319	503,309
United States Pension Plan of US Entity [Member] | Unfunded Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	5,453	6,046
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	260,301	275,318
Foreign Defined Benefit Pension Plans [Member] | Funded Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	220,842	235,787
Foreign Defined Benefit Pension Plans [Member] | Unfunded Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 39,459	$ 39,531

Retirement Plans and Other Po_6

Retirement Plans and Other Postretirement Benefits - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	Dec. 31, 2018	Dec. 31, 2017
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.40%	3.75%
Rate of compensation increase (where applicable)	3.75%	3.75%
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.59%	2.39%
Rate of compensation increase (where applicable)	2.50%	2.50%

Retirement Plans and Other Po_7

Retirement Plans and Other Postretirement Benefits - Fair Value of Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 748,988	$ 846,961
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	552,187	619,993
United States Pension Plan of US Entity [Member] | Municipal Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	488	565
United States Pension Plan of US Entity [Member] | Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,440	1,757
United States Pension Plan of US Entity [Member] | Corporate Debt Instruments - Preferred [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,967	12,574
United States Pension Plan of US Entity [Member] | Corporate Stocks - Common [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	115,013	137,693
United States Pension Plan of US Entity [Member] | Registered Investment Companies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	279,006	289,693
United States Pension Plan of US Entity [Member] | U.S. Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	362	246
United States Pension Plan of US Entity [Member] | Total Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	408,276	442,528
United States Pension Plan of US Entity [Member] | Investments Measured at Net Asset Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	143,911	177,465
Level 1 [Member] | United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	394,019	427,386
Level 1 [Member] | United States Pension Plan of US Entity [Member] | Corporate Stocks - Common [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	115,013	137,693
Level 1 [Member] | United States Pension Plan of US Entity [Member] | Registered Investment Companies [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	279,006	289,693
Level 1 [Member] | United States Pension Plan of US Entity [Member] | Total Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	394,019	427,386
Level 2 [Member] | United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14,257	15,142
Level 2 [Member] | United States Pension Plan of US Entity [Member] | Municipal Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	488	565
Level 2 [Member] | United States Pension Plan of US Entity [Member] | Corporate Debt Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,440	1,757
Level 2 [Member] | United States Pension Plan of US Entity [Member] | Corporate Debt Instruments - Preferred [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10,967	12,574
Level 2 [Member] | United States Pension Plan of US Entity [Member] | U.S. Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	362	246
Level 2 [Member] | United States Pension Plan of US Entity [Member] | Total Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 14,257	$ 15,142

Retirement Plans and Other Po_8

Retirement Plans and Other Postretirement Benefits - Fair Value of Plan Assets for Foreign Defined Benefit Pension Plans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 748,988	$ 846,961
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	196,801	226,968	$ 188,935
Foreign Defined Benefit Pension Plans [Member] | Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,685	21,294
Foreign Defined Benefit Pension Plans [Member] | Total Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,685	21,294
Foreign Defined Benefit Pension Plans [Member] | Investments Measured at Net Asset Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	178,116	205,674
Fair Value, Inputs, Level 3 [Member] | Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,685	21,294
Fair Value, Inputs, Level 3 [Member] | Foreign Defined Benefit Pension Plans [Member] | Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18,685	21,294	$ 18,147
Fair Value, Inputs, Level 3 [Member] | Foreign Defined Benefit Pension Plans [Member] | Total Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 18,685	$ 21,294

Retirement Plans and Other Po_9

Retirement Plans and Other Postretirement Benefits - Summary of Changes of Fair Value of Foreign Plans' Investments Using Significant Unobservable Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the year	$ 846,961
Actual return on assets:
Fair value of plan assets at the end of the year	748,988	$ 846,961
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the year	226,968	188,935
Actual return on assets:
Fair value of plan assets at the end of the year	196,801	226,968
Foreign Defined Benefit Pension Plans [Member] | Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the year	21,294
Actual return on assets:
Fair value of plan assets at the end of the year	18,685	21,294
Fair Value, Inputs, Level 3 [Member] | Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the year	21,294
Actual return on assets:
Fair value of plan assets at the end of the year	18,685	21,294
Fair Value, Inputs, Level 3 [Member] | Foreign Defined Benefit Pension Plans [Member] | Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at the beginning of the year	21,294	18,147
Actual return on assets:
Unrealized (losses) gains relating to instruments still held at the end of the year	(2,609)	3,147
Realized gains (losses) relating to assets sold during the year	0	0
Purchases, sales, issuances and settlements, net	0	0
Fair value of plan assets at the end of the year	$ 18,685	$ 21,294

Retirement Plans and Other P_10

Retirement Plans and Other Postretirement Benefits - Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation Exceeds Fair Value of Assets, Projected Benefit Obligation	$ 6,928	$ 6,046
Projected Benefit Obligation Exceeds Fair Value of Assets, Fair Value of Plan Assets	809
Accumulated Benefit Obligation Exceeds Fair Value of Assets, Projected Benefit Obligation	6,928	6,046
Accumulated Benefit Obligation Exceeds Fair Value of Assets, Fair Value of Plan Assets	809
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected Benefit Obligation Exceeds Fair Value of Assets, Projected Benefit Obligation	268,763	186,756
Projected Benefit Obligation Exceeds Fair Value of Assets, Fair Value of Plan Assets	196,801	127,170
Accumulated Benefit Obligation Exceeds Fair Value of Assets, Projected Benefit Obligation	260,301	180,779
Accumulated Benefit Obligation Exceeds Fair Value of Assets, Fair Value of Plan Assets	$ 196,801	$ 127,170

Retirement Plans and Other P_11

Retirement Plans and Other Postretirement Benefits - Funded Status of Plan and Amounts Recognized in Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Funded status asset (liability):
Fair value of plan assets	$ 748,988	$ 846,961
Projected benefit obligation	(740,269)	(804,553)
Funded status at the end of the year	8,719	42,408
Amounts recognized in the consolidated balance sheet consisted of:
Noncurrent asset for pension benefits (other assets)	86,799	108,039
Current liabilities for pension benefits	(1,905)	(1,901)
Noncurrent liability for pension benefits	(76,175)	(63,730)
Net amount recognized at the end of the year	$ 8,719	$ 42,408

Retirement Plans and Other P_12

Retirement Plans and Other Postretirement Benefits - Amounts Recognized in Accumulated Other Comprehensive Income, Net of Taxes (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Total recognized	$ 248,950	$ 177,371
Net Actuarial Loss [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recognized	244,511	178,466
Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recognized	4,432	(1,102)
Transition Asset [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recognized	$ 7	$ 7

Retirement Plans and Other P_13

Retirement Plans and Other Postretirement Benefits - Components of Net Periodic Pension Benefit Expense (Income) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined benefit plans:
Service cost	$ 6,879	$ 7,138	$ 6,622
Interest cost	25,678	27,424	30,049
Expected return on plan assets	(59,325)	(53,442)	(51,140)
Amortization of:
Net actuarial loss	12,092	14,591	10,224
Prior service costs	(49)	(47)	(52)
Transition asset	1	1	1
Total net periodic benefit income	(14,724)	(4,335)	(4,296)
Other plans:
Defined contribution plans	28,829	24,280	23,881
Foreign plans and other	6,185	5,866	5,694
Total other plans	35,014	30,146	29,575
Total net pension expense	$ 20,290	$ 25,811	$ 25,279

Retirement Plans and Other P_14

Retirement Plans and Other Postretirement Benefits - Weighted Average Assumptions Used to Determine Net Periodic Pension Benefit Expense (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States Pension Plan of US Entity [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.40%	4.25%	4.80%
Expected return on plan assets	7.50%	7.50%	7.75%
Rate of compensation increase (where applicable)	3.75%	3.75%	3.75%
Foreign Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.59%	2.56%	3.62%
Expected return on plan assets	6.52%	6.79%	6.95%
Rate of compensation increase (where applicable)	2.50%	2.50%	2.88%

Contingencies - Additional Info

Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)Site	Dec. 31, 2017USD ($)
Site Contingency [Line Items]
Number of non-owned sites Company is named Potentially Responsible Party | Site	13
Number of non-owned sites the Company is identified as a de minimis party | Site	12
Total environmental reserves	$ 27.8	$ 30.1
Increase (decrease) in environmental reserves	4.5
Total expenses related to environmental matters	6.6
Foreign currency translation	0.2
HCC Industries [Member]
Site Contingency [Line Items]
Reserves related to an owned site acquired	9.6	$ 11.6
Receivables related to HCC for probable recoveries from third-party funds	12.1
Amount for which the Company is indemnified by HCC's former owners	$ 19

Leases and Other Commitments -

Leases and Other Commitments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Leased Assets [Line Items]
Minimum aggregate rental commitments under noncancellable leases	$ 200
Future minimum rental payments in 2019	43.1
Future minimum rental payments in 2020	35.7
Future minimum rental payments in 2021	29
Future minimum rental payments in 2022	23.3
Future minimum rental payments in 2023	18.9
Future minimum rental payments thereafter	50
Rental expenses under non-cancelable leases	52.5	$ 49.7	$ 46.3
Purchase obligations outstanding	470.2	$ 390.6
future payment obligations	94.5
future payment obligations,guarantees	$ 2.3
Minimum [Member]
Operating Leased Assets [Line Items]
Leases expiration	2,019
Maximum [Member]
Operating Leased Assets [Line Items]
Leases expiration	2,082

Reportable Segments and Geogr_3

Reportable Segments and Geographic Areas Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018Segment
Segment Reporting [Abstract]
Number of reportable segments	2

Reportable Segments and Geogr_4

Reportable Segments and Geographic Areas Information - Reportable Segment Financial Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment operating income:
Operating income	$ 282,020	$ 265,266	$ 270,086	$ 258,168	$ 226,586	$ 230,038	$ 229,549	$ 217,447	$ 1,075,540	$ 903,620	$ 790,979
Interest and other expenses, net									(87,795)	(106,891)	(97,876)
Income before income taxes									987,745	796,729	693,103
Assets:
Assets	8,662,288				7,796,064				8,662,288	7,796,064
Additions to property, plant and equipment:
Additions to property, plant and equipment									156,815	94,152	86,345
Depreciation and amortization:
Depreciation and amortization									199,490	183,227	179,716
Operating Segments [Member]
Segment operating income:
Operating income									1,145,909	978,425	845,311
Assets:
Assets	8,310,977				7,339,078				8,310,977	7,339,078
Additions to property, plant and equipment:
Additions to property, plant and equipment									153,319	91,150	84,431
Depreciation and amortization:
Depreciation and amortization									197,510	181,275	178,051
Operating Segments [Member] | Electronic Instruments Group [Member]
Segment operating income:
Operating income									782,144	671,646	571,077
Assets:
Assets	5,625,303				4,803,575				5,625,303	4,803,575
Additions to property, plant and equipment:
Additions to property, plant and equipment									110,858	54,321	45,091
Depreciation and amortization:
Depreciation and amortization									121,709	108,053	104,284
Operating Segments [Member] | Electromechanical Group [Member]
Segment operating income:
Operating income									363,765	306,779	274,234
Assets:
Assets	2,685,674				2,535,503				2,685,674	2,535,503
Additions to property, plant and equipment:
Additions to property, plant and equipment									42,461	36,829	39,340
Depreciation and amortization:
Depreciation and amortization									75,801	73,222	73,767
Corporate [Member]
Segment operating income:
Corporate administrative expenses									(70,369)	(74,805)	(54,332)
Assets:
Assets	$ 351,311				$ 456,986				351,311	456,986
Additions to property, plant and equipment:
Additions to property, plant and equipment									3,496	3,002	1,914
Depreciation and amortization:
Depreciation and amortization									$ 1,980	$ 1,952	$ 1,665

Reportable Segments and Geogr_5

Reportable Segments and Geographic Areas Information - Reportable Segment Financial Information (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Additions to property, plant and equipment from acquired business	$ 74.6	$ 19.1	$ 23.1

Reportable Segments and Geogr_6

Reportable Segments and Geographic Areas Information - Information about Company's Operations in Different Geographic Areas (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	$ 554,130	$ 493,296
United States [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	380,855	325,908
United Kingdom [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	55,527	62,643
European Union Countries [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	78,524	65,204
Asia [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	11,846	12,073
Other Foreign Countries [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	27,378	27,468
Total International [Member]
Long-lived assets from continuing operations (excluding intangible assets):
Long-lived assets from continuing operations (excluding intangible assets)	$ 173,275	$ 167,388

Additional Consolidated Incom_2

Additional Consolidated Income Statement and Cash Flow Information - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Consolidating Financial Information [Abstract]
Interest and other investment income	$ 2	$ 2.1	$ 1.2
Income taxes paid	195.2	176.6	180.8
Cash paid for interest	$ 83.6	$ 96.1	$ 91.8

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Feb. 01, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Feb. 12, 2019
Shareholders Equity [Line Items]
Repurchase of common stock			5,079,000	114,000
Repurchase of common stock under share repurchase authorization			$ 367,700,000	$ 6,900,000
Remaining authorization for future share repurchases		$ 368,700,000	$ 1,000,000	$ 368,700,000
Treasury stock, shares		31,754,106	36,534,802	31,754,106
Treasury stock, cost		$ 1,209,135,000	$ 1,570,184,000	$ 1,209,135,000
Number of shares outstanding		231,200,000	227,100,000	231,200,000
Dividend declared per share	$ 0.14	$ 0.09
Increase in dividend rate, percentage	56.00%
shares repurchased			5,079,000	114,000
shares repurchased value			$ 367,700,000	$ 6,900,000
Subsequent Event [Member]
Shareholders Equity [Line Items]
shares repurchased value					$ 500,000,000

Restructuring Charges - Additio

Restructuring Charges - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Reduction in net income due to restructuring charges	$ 9.1	$ 17	$ 13.9
Restructuring charges	$ 10.8	25.6	20.7
Severance cost		19.3
Asset write-downs		6.2
Electronic Instruments Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		12.4	9.3
Electromechanical Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		11.6	10.8
Cost of Sales, Excluding Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		24	20
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1.6	0.7
Corporate Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1.6	$ 0.7

Restructuring Charges - Schedul

Restructuring Charges - Schedule of Accrued Liabilities in Company's Consolidated Balance Sheet Included Amounts Related to Restructuring Charges (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fourth Quarter of 2016 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance	$ 12.8	$ 19.2
Utilization	(5.5)	(6.4)
Foreign currency translation adjustments and other	(2.1)
Restructuring reserve, ending balance	5.2	12.8
Fourth Quarter of 2015 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance	6.7	9.2
Utilization	(1)	(2.4)
Foreign currency translation adjustments and other	(0.8)	(0.1)
Restructuring reserve, ending balance	$ 4.9	$ 6.7

Quarterly Financial Data - Quar

Quarterly Financial Data - Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,271,328	$ 1,192,962	$ 1,208,935	$ 1,172,647	$ 1,143,085	$ 1,084,799	$ 1,064,604	$ 1,007,682	$ 4,845,872	$ 4,300,170	$ 3,840,087
Operating income	282,020	265,266	270,086	258,168	226,586	230,038	229,549	217,447	1,075,540	903,620	790,979
Net income	$ 211,520	$ 191,213	$ 193,860	$ 181,340	$ 238,532	$ 153,531	$ 150,481	$ 138,926	$ 777,933	$ 681,470	$ 512,158
Basic earnings per share	$ 0.92	$ 0.83	$ 0.84	$ 0.79	$ 1.03	$ 0.67	$ 0.65	$ 0.61	$ 3.37	$ 2.96	$ 2.20
Diluted earnings per share	0.91	0.82	0.83	0.78	1.03	0.66	0.65	0.60	3.34	2.94	$ 2.19
Dividends paid per share	$ 0.14	$ 0.14	$ 0.14	$ 0.14	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.56	$ 0.36

Quarterly Financial Data - Qu_2

Quarterly Financial Data - Quarterly Financial Data (Parenthetical) (Detail) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Reduction in net income due to restructuring charges		$ 9.1	$ 17	$ 13.9
Restructuring charges		10.8	$ 25.6	$ 20.7
Income tax benefit	$ 11.8	$ 91.6			$ 11.8	$ 91.6

Revenues - Information about _2

Revenues - Information about Operations in Different Geographic Areas (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 1,271,328	$ 1,192,962	$ 1,208,935	$ 1,172,647	$ 1,143,085	$ 1,084,799	$ 1,064,604	$ 1,007,682	$ 4,845,872	$ 4,300,170	$ 3,840,087
Non-US [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax									$ 1,269,400	$ 1,142,300	$ 1,036,000