Sensata Technologies Holding (ST) 10-K 6 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. 15, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	Sensata Technologies Holding plc
Entity Central Index Key	1,477,294
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		164,158,929
Entity Public Float			$ 8.1
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 729,833	$ 753,089
Accounts receivable, net of allowances of $13,762 and $12,947 as of December 31, 2018 and 2017, respectively	581,769	556,541
Inventories	492,319	446,129
Prepaid expenses and other current assets	113,234	92,532
Total current assets	1,917,155	1,848,291
Property, plant and equipment, net	787,178	750,049
Goodwill	3,081,302	3,005,464
Other intangible assets, net	897,191	920,124
Deferred income tax assets	27,971	33,003
Other assets	86,890	84,594
Total assets	6,797,687	6,641,525
Current liabilities:
Current portion of long-term debt, capital lease and other financing obligations	14,561	15,720
Accounts payable	379,824	322,671
Income taxes payable	27,429	31,544
Accrued expenses and other current liabilities	218,130	259,560
Total current liabilities	639,944	629,495
Deferred income tax liabilities	225,694	338,228
Pension and other post-retirement benefit obligations	33,958	40,055
Capital lease and other financing obligations, less current portion	30,618	28,739
Long-term debt, net	3,219,762	3,225,810
Other long-term liabilities	39,277	33,572
Total liabilities	4,189,253	4,295,899
Commitments and contingencies (Note 15)
Shareholders’ equity:
Ordinary shares, €0.01 nominal value per share, 177,069 and 400,000 shares authorized and 171,719 and 178,437 shares issued as of December 31, 2018 and 2017, respectively	2,203	2,289
Treasury shares, at cost, 7,571 and 7,076 shares as of December 31, 2018 and 2017, respectively	(399,417)	(288,478)
Additional paid-in capital	1,691,190	1,663,367
Retained earnings	1,340,636	1,031,612
Accumulated other comprehensive loss	(26,178)	(63,164)
Total shareholders’ equity	2,608,434	2,345,626
Total liabilities and shareholders’ equity	$ 6,797,687	$ 6,641,525

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) $ in Thousands	Dec. 31, 2018USD ($)shares	Dec. 31, 2018€ / shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2017€ / shares
Assets, Current [Abstract]
Allowance for doubtful accounts receivable, current | $	$ 13,762		$ 12,947
Stockholders' Equity Attributable to Parent [Abstract]
Ordinary shares nominal value per share (in euros per share) | € / shares		€ 0.01		€ 0.01
Ordinary shares authorized (in shares)	177,069,000		400,000,000
Ordinary shares issued (in shares)	171,719,000		178,437,000
Treasury shares (in shares)	7,571,000		7,076,000

Consolidated Statements of Oper

Consolidated Statements of Operations - 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
Income Statement [Abstract]
Net revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Operating costs and expenses:
Cost of revenue									2,266,863	2,138,898	2,084,159
Research and development									147,279	130,127	126,656
Selling, general and administrative									305,558	301,896	293,506
Amortization of intangible assets									139,326	161,050	201,498
Restructuring and other charges, net									(47,818)	18,975	4,113
Total operating costs and expenses									2,811,208	2,750,946	2,709,932
Profit from operations									710,419	555,787	492,356
Interest expense, net									(153,679)	(159,761)	(165,818)
Other, net									(30,365)	6,415	(5,093)
Income before taxes									526,375	402,441	321,445
(Benefit from)/provision for income taxes									(72,620)	(5,916)	59,011
Net income	$ 254,099	$ 149,118	$ 105,288	$ 90,490	$ 169,129	$ 88,035	$ 79,457	$ 71,736	$ 598,995	$ 408,357	$ 262,434
Basic net income per share (in dollars per share)	$ 1.55	$ 0.89	$ 0.61	$ 0.53	$ 0.99	$ 0.51	$ 0.46	$ 0.42	$ 3.55	$ 2.39	$ 1.54
Diluted net income per share (in dollars per share)	$ 1.54	$ 0.88	$ 0.61	$ 0.52	$ 0.98	$ 0.51	$ 0.46	$ 0.42	$ 3.53	$ 2.37	$ 1.53

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income	$ 598,995	$ 408,357	$ 262,434
Other comprehensive income/(loss), net of tax:
Cash flow hedges	37,363	(28,202)	(3,829)
Defined benefit and retiree healthcare plans	(377)	(895)	(4,248)
Other comprehensive income/(loss)	36,986	(29,097)	(8,077)
Comprehensive income	$ 635,981	$ 379,260	$ 254,357

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 598,995	$ 408,357	$ 262,434
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	106,014	109,321	106,903
Amortization of debt issuance costs	7,317	7,241	7,334
Gain on sale of business	(64,423)	0	0
Share-based compensation	23,825	19,819	17,425
Loss on debt financing	2,350	2,670	0
Amortization of intangible assets	139,326	161,050	201,498
Deferred income taxes	(144,068)	(56,757)	8,344
Unrealized loss on hedges and other	18,176	781	11,517
Changes in operating assets and liabilities, net of the effects of acquisitions and divestitures:
Accounts receivable, net	(34,877)	(56,330)	(33,013)
Inventories	(55,445)	(57,119)	(37,500)
Prepaid expenses and other current assets	(11,891)	(12,412)	6,956
Accounts payable and accrued expenses	48,371	23,841	(21,432)
Income taxes payable	(353)	7,655	(1,938)
Other	(12,754)	(471)	(7,003)
Net cash provided by operating activities	620,563	557,646	521,525
Cash flows from investing activities:
Acquisitions, net of cash received	(228,307)	0	4,688
Additions to property, plant and equipment and capitalized software	(159,787)	(144,584)	(130,217)
Investment in equity securities	0	0	(50,000)
Proceeds from sale of business, net of cash sold	149,777	0	0
Other	711	3,862	751
Net cash used in investing activities	(237,606)	(140,722)	(174,778)
Cash flows from financing activities:
Proceeds from exercise of stock options and issuance of ordinary shares	6,093	7,450	3,944
Payment of employee restricted stock tax withholdings	(3,674)	(2,910)	(4,752)
Proceeds from issuance of debt	0	927,794	0
Payments on debt	(15,653)	(943,554)	(336,256)
Payments to repurchase ordinary shares	(399,417)	0	0
Payments of debt and equity issuance costs	(9,931)	(4,043)	(518)
Other	16,369	0	0
Net cash used in financing activities	(406,213)	(15,263)	(337,582)
Net change in cash and cash equivalents	(23,256)	401,661	9,165
Cash and cash equivalents, beginning of year	753,089	351,428	342,263
Cash and cash equivalents, end of year	729,833	753,089	351,428
Supplemental cash flow items:
Cash paid for interest	163,478	164,370	155,925
Cash paid for income taxes	$ 72,924	$ 48,482	$ 43,152

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Ordinary Shares	Treasury Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance (shares) at Dec. 31, 2015		178,437,000	(8,038,000)
Stockholders equity, beginning of period at Dec. 31, 2015	$ 1,668,576	$ 2,289	$ (324,994)	$ 1,626,024	$ 391,247	$ (25,990)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Surrender of shares for tax withholding (in shares)			(62,000)
Surrender of shares for tax withholding	$ (2,295)		$ (2,295)
Stock options exercised (in shares)	358,000		358,000
Stock options exercised	$ 3,944		$ 13,698	0	(9,754)
Vesting of restricted securities (in shares)			185,000
Vesting of restricted securities			$ 7,086		(7,086)
Share-based compensation	17,425			17,425
Net income	262,434				262,434
Other comprehensive (loss)/income	(8,077)					(8,077)
Balance (shares) at Dec. 31, 2016		178,437,000	(7,557,000)
Stockholders equity, end of period at Dec. 31, 2016	1,942,007	$ 2,289	$ (306,505)	1,643,449	636,841	(34,067)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Surrender of shares for tax withholding (in shares)			(67,000)
Surrender of shares for tax withholding	$ (2,910)		$ (2,910)
Stock options exercised (in shares)	326,000		326,000
Stock options exercised	$ 7,450		$ 12,465	99	(5,114)
Vesting of restricted securities (in shares)			222,000
Vesting of restricted securities			$ 8,472		(8,472)
Share-based compensation	19,819			19,819
Net income	408,357				408,357
Other comprehensive (loss)/income	(29,097)					(29,097)
Balance (shares) at Dec. 31, 2017		178,437,000	(7,076,000)
Stockholders equity, end of period at Dec. 31, 2017	2,345,626	$ 2,289	$ (288,478)	1,663,367	1,031,612	(63,164)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Surrender of shares for tax withholding (in shares)			(71,000)
Surrender of shares for tax withholding	$ (3,674)		$ (3,674)
Stock options exercised (in shares)	172,000	114,000	58,000
Stock options exercised	$ 6,093	$ 1	$ 2,250	3,998	(156)
Vesting of restricted securities (in shares)		257,000	0
Vesting of restricted securities		$ 3	$ 0		(3)
Retirement of treasury shares due to Merger (in shares)		(7,018,000)	7,018,000
Retirement of treasury shares due to Merger		$ (89)	$ 286,228		(286,139)
Repurchase of ordinary shares (in shares)	7,571		(7,571,000)
Repurchase of ordinary shares	$ (399,417)		$ (399,417)
Other retirements of treasury shares (in shares)		(71,000)	71,000
Other retirements of treasury shares		$ (1)	$ 3,674		(3,673)
Share-based compensation	23,825			23,825
Net income	598,995				598,995
Other comprehensive (loss)/income	36,986					36,986
Balance (shares) at Dec. 31, 2018		171,719,000	(7,571,000)
Stockholders equity, end of period at Dec. 31, 2018	$ 2,608,434	$ 2,203	$ (399,417)	$ 1,691,190	$ 1,340,636	$ (26,178)

Business Description and Basis

Business Description and Basis of Presentation	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business Description and Basis of Presentation	Business Description and Basis of Presentation Description of Business The accompanying consolidated financial statements reflect the financial position, results of operations, comprehensive income, cash flows, and changes in shareholders' equity of Sensata Technologies Holding plc ("Sensata plc"), the successor issuer to Sensata Technologies Holding N.V. ("Sensata N.V."), and its wholly-owned subsidiaries, collectively referred to as the "Company," "Sensata," "we," "our," or "us." On September 28, 2017, the Board of Directors of Sensata N.V. unanimously approved a plan to change our location of incorporation from the Netherlands to the United Kingdom (the "U.K."). To effect this change, on February 16, 2018 the shareholders of Sensata N.V. approved a cross-border merger between Sensata N.V. and Sensata plc, a newly formed, public limited company incorporated under the laws of England and Wales, with Sensata plc being the surviving entity (the "Merger"). We received approval of the Merger by the U.K. High Court of Justice, and the Merger was completed, on March 28, 2018. As a result thereof, Sensata plc became the publicly-traded parent of the subsidiary companies that were previously controlled by Sensata N.V., with no changes made to the business being conducted by us prior to the Merger. Due to the fact that the Merger was a business combination between entities under common control, the assets and liabilities exchanged were accounted for at their carrying values. Sensata, a global industrial technology company, develops, manufactures, and sells a wide range of customized sensors and controls that address increasingly complex engineering requirements for specific customer applications and systems such as air conditioning, braking, exhaust, fuel oil, tire, operator controls, and transmission in automotive and heavy vehicle and off-road ("HVOR") systems, and temperature and electrical protection and control in numerous industrial applications, including aircraft, refrigeration, material handling, telecommunications, and heating, ventilation, and air conditioning ("HVAC") systems. Our sensors are devices that translate a physical phenomenon, such as pressure, temperature, or position, into electronic signals that microprocessors or computer-based control systems can act upon. Our controls are devices embedded within systems to protect them from excessive heat or current. We conduct our operations through subsidiary companies that operate business and product development centers primarily in Belgium, Bulgaria, China, Germany, Japan, the Netherlands, South Korea, the U.K., and the United States (the "U.S."); and manufacturing operations primarily in Bulgaria, China, Germany, Malaysia, Mexico, the U.K., and the U.S. We organize our business into two segments, Performance Sensing and Sensing Solutions. Refer to Note 20, "Segment Reporting," for a general description of each of our segments. Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). The accompanying consolidated financial statements present separately our financial position, results of operations, comprehensive income, cash flows, and changes in shareholders’ equity. All intercompany balances and transactions have been eliminated. All U.S. dollar and share amounts presented, except per share amounts, are stated in thousands, unless otherwise indicated. Certain reclassifications have been made to prior periods to conform to current period presentation.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires us to exercise our judgment in the process of applying our accounting policies. It also requires that we make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies at the date of the financial statements and the reported amounts of net revenue and expense during the reporting periods. Estimates are used when accounting for certain items such as allowances for doubtful accounts and sales returns, depreciation and amortization, inventory obsolescence, asset impairments (including goodwill and other intangible assets), contingencies, the value of share-based compensation, the determination of accrued expenses, certain asset valuations including deferred tax asset valuations, the useful lives of plant and equipment, post-retirement obligations, and business combinations. The accounting estimates used in the preparation of the consolidated financial statements will change as new events occur, as more experience is acquired, as additional information is obtained, and as the operating environment changes. Actual results could differ from those estimates. Revenue Recognition On January 1, 2018, we adopted FASB ASC Topic 606, Revenue from Contracts with Customers . This standard replaced previous revenue recognition rules with a comprehensive revenue measurement and recognition standard and expanded disclosure requirements. Upon adoption, we applied the pertinent transition provisions to contracts that were not completed as of January 1, 2018 using the modified retrospective method. Accordingly, periods presented prior to January 1, 2018 are presented under the previous revenue recognition guidance (i.e., FASB ASC Topic 605, Revenue Recognition ). We recognize revenue to depict the transfer of promised goods to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods. In order to achieve this, we use the five step model outlined in FASB ASC Topic 606. Specifically, we (1) identify the contract with the customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) we satisfy a performance obligation. The vast majority of our contracts (as defined in FASB ASC Topic 606) are customer purchase orders ("P.O.s"), which explicitly require that we transfer a specified quantity of products to our customers, for which performance is generally satisfied in a short amount of time. We do not consider there to be a significant financing component of our contracts, as our terms generally provide for payment in a short time (that is, less than a year) after shipment to the customer. Our performance obligations are satisfied when control of the product is transferred to the customer (at a point in time), which is generally when the product is shipped from our warehouse or, in limited instances, when it is received by the customer, depending on the specific terms of the arrangement. Many of our products are designed and engineered to meet customer specifications. These activities, and the testing of our products to determine compliance with those specifications, occur prior to any revenue being recognized. Products are then manufactured and sold to customers. However, in certain cases, pre-production activities are a performance obligation in a customer P.O., and revenue is recognized when the performance obligation is satisfied. Customer arrangements do not involve post-installation or post-sale testing and acceptance. In determining the transaction price related to a contract, we determine whether the amount promised in a contract includes a variable amount (variable consideration). Variable consideration may be specified in the customer P.O., in another agreement that identifies terms and conditions of the transaction, or based on our customary practices. We have identified certain types of variable consideration that are included in the transaction price related to our contracts, including sales returns (which generally include a right of return for defective or non-conforming product) and trade discounts (including retrospective volume discounts and early payment incentives). Such variable consideration has not historically been material in relation to our net revenue and have been within our estimates. The transaction price excludes value-added tax and similar taxes. Amounts billed to our customers for shipping and handling are recognized as revenue, and the related costs that we incur are presented in cost of revenue. We do not provide separately priced warranties to our customers. Our standard terms of sale provide our customers with a warranty against faulty workmanship and the use of defective materials, which is not considered a distinct performance obligation in accordance with FASB ASC Topic 606. Refer to Note 3, "Revenue Recognition," for additional information on our net revenue recognized in the consolidated statements of operations. Share-Based Compensation FASB ASC Topic 718, Compensation—Stock Compensation, requires that a company measure at fair value any new or modified share-based compensation arrangements with employees, such as stock options and restricted securities, and recognize as compensation expense that fair value over the requisite service period. Share-based compensation cost is generally recognized as a component of selling, general and administrative ("SG&A") expense, which is consistent with where the related employee costs are presented, however, such cost, or a portion thereof, may be capitalized provided certain criteria are met. Share-based awards may be subject to either cliff vesting (i.e., the entire award vests on a particular date) or graded vesting (i.e., portions of the award vest at different points in time). In accordance with FASB ASC Topic 718, compensation cost associated with share-based awards subject to cliff vesting must be recognized on a straight-line basis. However, for awards subject to graded vesting, companies have the option to recognize compensation cost on either a straight–line or accelerated basis. We have elected to recognize compensation costs for these awards using the straight-line method. We estimate the fair value of options on the grant date using the Black-Scholes-Merton option-pricing model. Key inputs and assumptions used in this model are as follows: • The fair value of the underlying ordinary shares. This is determined as the closing price of our ordinary shares on the New York Stock Exchange (the "NYSE") on the grant date. • The expected term. This is determined based upon our own historical average term of exercised and outstanding options. • Expected volatility. We consider our own historical volatility, as well as the historical and implied volatilities of publicly-traded companies within our industry, in estimating expected volatility for options. Implied volatility provides a forward-looking indication and may offer insight into expected industry volatility. • Risk-free interest rate. The risk-free interest rate is based on the yield for a U.S. Treasury security having a maturity similar to the expected term of the related option grant. • Expected dividend yield. The dividend yield of 0% is based on our history of having never declared or paid any dividends on our ordinary shares, and our current intention of not declaring any such dividends in the foreseeable future. See Item 5, "Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities," included elsewhere in this Report for further discussion of limitations on our ability to pay dividends. Restricted securities are valued using the closing price of our ordinary shares on the NYSE on the grant date. Certain of our restricted securities include performance conditions that require us to estimate the probable outcome of the performance condition. Compensation cost is recorded if it is probable that the performance condition will be achieved. Under the fair value recognition provisions of FASB ASC Topic 718, we recognize share-based compensation net of estimated forfeitures. Accordingly, we only recognize compensation cost for those awards expected to vest over the requisite service period. Compensation expense recognized for each award ultimately reflects the number of units that actually vest. Refer to Note 4, "Share-Based Payment Plans," for additional information on share-based compensation. Financial Instruments Our financial instruments include derivative instruments, debt instruments, equity investments, and trade accounts receivable. Derivative financial instruments: We account for our derivative financial instruments in accordance with FASB ASC Topic 820, Fair Value Measurements and Disclosures and FASB ASC Topic 815, Derivatives and Hedging . In accordance with FASB ASC Topic 815, we recognize all derivatives on the balance sheet at fair value. The fair value of our derivative financial instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. These analyses utilize observable market-based inputs, including foreign currency exchange rates and commodity forward curves, and reflect the contractual terms of these instruments, including the period to maturity. Derivative instruments that are designated and qualify as hedges of the exposure to changes in the fair value of an asset, liability, or commitment, and that are attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments that are designated and qualify as hedges of the exposure to variability in expected future cash flows are considered cash flow hedges. Derivative instruments may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. Currently, our derivative instruments that are designated as accounting hedges are all cash flow hedges. We also hold derivative instruments that are not designated as accounting hedges. The accounting for changes in the fair value of our cash flow hedges depends on whether we have elected to designate the derivative as a hedging instrument for accounting purposes and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. In accordance with FASB ASC Topic 815, the effective portion of changes in the fair value of cash flow hedges is recognized in accumulated other comprehensive loss and is subsequently reclassified into earnings in the period in which the hedged forecasted transaction affects earnings. The ineffective portion of changes in the fair value of cash flow hedges is immediately recognized in earnings. Changes in the fair value of derivative instruments that are not designated as accounting hedges are recognized immediately in other, net. We present the cash flows arising from our derivative financial instruments in a manner consistent with the presentation of cash flows that relate to the underlying hedged items. We incorporate credit valuation adjustments to appropriately reflect both our own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of non-performance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. We do not offset the fair value amounts recognized for derivative instruments against fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral. We maintain derivative instruments with major financial institutions of investment grade credit rating and monitor the amount of credit exposure to any one issuer. We believe there are no significant concentrations of risk associated with our derivative instruments. Refer to Note 19, "Derivative Instruments and Hedging Activities," for further discussion of our derivative instruments. Debt Instruments: A premium or discount on a debt instrument is recognized on the balance sheet as an adjustment to the carrying amount of the debt liability. In general, amounts paid to creditors are considered a reduction in the proceeds received from the issuance of the debt and are accounted for as a component of the premium or discount on the issuance, not as an issuance cost. Direct and incremental costs associated with the issuance of debt instruments such as legal fees, printing costs, and underwriters' fees, among others, paid to parties other than creditors, are also reported and presented as a reduction of debt on the consolidated balance sheets. Debt issuance costs and premiums or discounts are amortized over the term of the respective financing arrangement using the effective interest method. Amortization of these amounts is included as a component of interest expense, net in the consolidated statements of operations. In accounting for debt refinancing transactions, we apply the provisions of FASB ASC Subtopic 470-50, Modifications and Extinguishments . Our evaluation of the accounting under FASB ASC Subtopic 470-50 is done on a creditor by creditor basis in order to determine if the terms of the debt are substantially different and, as a result, whether to apply modification or extinguishment accounting. In the event that an individual holder of existing debt did not invest in new debt, we apply extinguishment accounting. Borrowings associated with individual holders of new debt that are not holders of existing debt are accounted for as new issuances. Refer to Note 14, "Debt," for further details of our debt instruments and transactions. Equity Investments: On January 1, 2018, we adopted FASB Accounting Standards Update ("ASU") No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities . In accordance with this guidance, we measure equity investments (other than those accounted for under the equity method, those that result in consolidation of the investee, and certain other investments) either at fair value, with changes to fair value recognized in net income, or in certain instances, by use of a measurement alternative. Under the measurement alternative, such investments are measured at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Refer to Note 18, "Fair Value Measures," for further discussion of our measurement of financial instruments. Trade accounts receivable: Trade accounts receivable are recognized at invoiced amounts and do not bear interest. Trade accounts receivable are reduced by an allowance for losses on receivables, as described elsewhere in this Note 2. Concentrations of risk with respect to trade accounts receivable are generally limited due to the large number of customers in various industries and their dispersion across several geographic areas. Although we do not foresee that credit risk associated with these receivables will deviate from historical experience, repayment is dependent upon the financial stability of these individual customers. Our largest customer accounted for approximately 8% of our net revenue for the year ended December 31, 2018 . Allowance for Losses on Receivables The allowance for losses on receivables is used to present accounts receivable, net at an amount that represents our estimate of the related transaction price recognized as revenue in accordance with FASB ASC Topic 606. The allowance represents an estimate of probable but unconfirmed losses in the receivable portfolio. We estimate the allowance on the basis of specifically identified receivables that are evaluated individually for impairment and a statistical analysis of the remaining receivables determined by reference to past default experience. Customers are generally not required to provide collateral for purchases. The allowance for losses on receivables also includes an allowance for sales returns (variable consideration). Management judgments are used to determine when to charge off uncollectible trade accounts receivable. We base these judgments on the age of the receivable, credit quality of the customer, current economic conditions, and other factors that may affect a customer’s ability and intent to pay. Losses on receivables have not historically been significant. Goodwill and Other Intangible Assets Businesses acquired are recorded at their fair value on the date of acquisition, with the excess of the purchase price over the fair value of identifiable assets acquired and liabilities assumed recognized as goodwill. Intangible assets acquired may include either definite-lived or indefinite-lived intangible assets, or both. In accordance with the requirements of FASB ASC Topic 350, Intangibles—Goodwill and Other , goodwill and intangible assets determined to have an indefinite useful life are not amortized. Instead these assets are evaluated for impairment on an annual basis, and whenever events or business conditions change that could indicate that the asset is impaired. We evaluate goodwill and indefinite-lived intangible assets for impairment in the fourth quarter of each fiscal year, unless events occur which trigger the need for an earlier impairment review. Goodwill: We have identified six reporting units: Performance Sensing, Electrical Protection, Industrial Sensing, Aerospace, Power Management, and Interconnection. These reporting units have been identified based on the definitions and guidance provided in FASB ASC Topic 350. We periodically review these reporting units to ensure that they continue to reflect the manner in which the business is operated. Certain assets and liabilities relate to the operations of multiple reporting units. We allocate these assets and liabilities to the related reporting units based on methods that we believe are reasonable and supportable, and we apply that allocation method on a consistent basis from year to year. Other assets and liabilities, such as cash and cash equivalents, property, plant and equipment associated with our corporate offices, and debt, we view as being corporate in nature. Accordingly, we do not assign these assets and liabilities to our reporting units. In the event we reorganize our business, we reassign the assets and liabilities among the affected reporting units using a reasonable and supportable methodology. As businesses are acquired, we assign assets acquired and liabilities assumed to a new or existing reporting unit as of the date of the acquisition. Goodwill generated by the acquisition of GIGAVAC, LLC ("GIGAVAC") in October 2018 has been allocated between our Performance Sensing and Industrial Sensing reporting units as of December 31, 2018, subject to changes prior to the end of the measurement period. Refer to Note 11, "Goodwill and Other Intangible Assets, Net," and Note 17, "Acquisitions and Divestitures," for additional information regarding the acquisition of GIGAVAC. In the event a disposal group meets the definition of a business, goodwill is allocated to the disposal group based on the relative fair value of the disposal group to the retained portion of the related reporting unit. We have the option to first assess qualitative factors to determine whether a quantitative analysis must be performed. The objective of a qualitative analysis is to determine whether it is more likely than not that the fair value of a reporting unit is less than its net book value. If we elect not to use this option, or if we determine that it is more likely than not that the fair value of a reporting unit is less than its net book value, then we perform the first step of the quantitative analysis prescribed by FASB ASC Topic 350. In this step we compare the estimated fair values of our reporting units to their respective net book values, including goodwill, to determine whether there is an indicator of potential impairment. If the net book value of a reporting unit exceeds its estimated fair value, we conduct a second step in which we calculate the implied fair value of goodwill. If the carrying value of the reporting unit’s goodwill exceeds its calculated implied fair value, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination. That is, the fair value of the reporting unit is allocated to all of its identifiable assets and liabilities as if the reporting unit had been acquired in a business combination at the date of assessment, and the fair value of the reporting unit was the purchase price paid to acquire the reporting unit. The excess of the fair value of the reporting unit over the sum of the fair values of each of its identifiable assets and liabilities is the implied fair value of goodwill. The fair value measurements of our reporting units are categorized in level 3 of the fair value hierarchy. Indefinite-lived intangible assets: Similar to goodwill, we perform an annual impairment review of our indefinite-lived intangible assets in the fourth quarter of each fiscal year, unless events occur that trigger the need for an earlier impairment review. We have the option to first assess qualitative factors in determining whether it is more likely than not that an indefinite-lived intangible asset is impaired. If we elect not to use this option, or we determine that it is more likely than not that the asset is impaired, we perform a quantitative impairment review that requires us to estimate the fair value of the indefinite-lived intangible asset and compare that amount to its carrying value. We estimate the fair value by using the relief-from-royalty method, which requires us to make assumptions about future conditions impacting the value of the indefinite-lived intangible assets, including projected growth rates, cost of capital, effective tax rates, and royalty rates. Impairment, if any, is based on the excess of the carrying value over the fair value of these assets. Definite-lived intangible assets: Definite-lived, acquisition-related intangible assets are amortized on an economic-benefit basis according to the useful lives of the assets, or on a straight-line basis if a pattern of economic benefits cannot be reliably determined. Capitalized software and capitalized software licenses are presented on the consolidated balance sheets as intangible assets. Capitalized software licenses are amortized on a straight-line basis over the lesser of the term of the license or the estimated useful life of the software. Capitalized software is amortized on a straight-line basis over its estimated useful life. Reviews are regularly performed to determine whether facts or circumstances exist that indicate that the carrying values of our definite-lived intangible assets are impaired. If we determine that such facts or circumstances exist, we estimate the recoverability of these assets by comparing the projected undiscounted net cash flows associated with these assets to their respective carrying values. If the sum of the projected undiscounted net cash flows is less than the carrying value of an asset, the impairment charge is measured as the excess of the carrying value over the fair value of that asset. We determine fair value by using the appropriate income approach valuation methodology, depending on the nature of the intangible asset. Refer to Note 11, "Goodwill and Other Intangible Assets, Net," for further details of our goodwill and other intangible assets. Income Taxes We estimate our provision for income taxes in each of the jurisdictions in which we operate. The provision for income taxes includes both our current and deferred tax exposure. Our deferred tax exposure is measured using the asset and liability method, under which deferred income taxes are recorded to reflect the future tax consequences of differences between the tax bases of assets and liabilities and their financial reporting amounts at each balance sheet date, based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to reverse or settle. The effect on deferred tax assets and liabilities of a change in statutory tax rates is recognized in the consolidated statements of operations as an adjustment to income tax expense in the period that includes the enactment date. In measuring our deferred tax assets, we consider all available evidence, both positive and negative, to determine whether, based on the weight of that evidence, a valuation allowance is needed for all or some portion of the deferred tax assets. If it is determined that it is more likely than not that future tax benefits associated with a deferred tax asset will not be realized, a valuation allowance is provided. As a result, we maintain valuation allowances against the deferred tax assets in jurisdictions that have incurred losses in recent periods and in which it is more likely than not that such deferred tax assets will not be utilized in the foreseeable future. The U.S. Tax Reform Act includes two new U.S. tax base erosion provisions, the global intangible low-taxed income ("GILTI") provisions and the base-erosion and anti-abuse tax ("BEAT") provisions. The GILTI provisions require our U.S. operations to include in our U.S. income tax return, earnings of subsidiaries held by our U.S. group to the extent that these subsidiaries have earnings in excess of an allowable return on their tangible assets. We have elected to account for GILTI in the period in which it is incurred, and therefore have not adjusted our deferred tax assets for any future impacts this provision may have. The Act subjects a U.S. taxpayer to pay a BEAT if it is greater than the taxpayer's regular tax liability. The BEAT provision eliminates the deduction of certain payments made to foreign affiliates (referred to as base erosion payments) but applies a lower tax rate on the resulting BEAT income. The FASB Staff Q&A, Topic 740, No. 4, Accounting for the Base Erosion Anti-Abuse Tax , states that the incremental effect of BEAT should be recognized in the year the BEAT is incurred as a period expense only, and an entity would not need to evaluate the effect of potentially paying the BEAT in future years on the realization of deferred tax assets recognized under the regular tax system, because the realization of the deferred tax asset would reduce its regular tax liability, even when an incremental BEAT liability would be owed in that period. We have followed this guidance in our current tax calculation and evaluation of the realizability of our deferred tax assets. In accordance with FASB ASC Topic 740, Income Taxes , penalties and interest related to unrecognized tax benefits may be classified as either income taxes or another expense line item in the consolidated statements of operations. We classify interest and penalties related to unrecognized tax benefits within the (benefit from)/provision for income taxes line of the consolidated statements of operations. Refer to Note 7, "Income Taxes," for further details on our income taxes. Pension and Other Post-Retirement Benefits We sponsor various pension and other post-retirement benefit plans covering our current and former employees in several countries. The funded status of pension and other post-retirement benefit plans, recognized on our consolidated balance sheets as an asset, current liability, or long-term liability, is measured as the difference between the fair value of plan assets and the benefit obligation at the measurement date. In general, the measurement date coincides with our fiscal year end, however, certain significant events, such as (1) plan amendments, (2) business combinations, (3) settlements or curtailments, or (4) plan mergers, may trigger the need for an interim measurement of both the plan assets and benefit obligations. Benefit obligations represent the actuarial present value of all benefits attributed by the pension formula as of the measurement date to employee service rendered before that date. The value of benefit obligations takes into consideration various financial assumptions, including assumed discount rate and the rate of increase in healthcare costs, and demographic assumptions, including compensation rate increases, retirement patterns, employee turnover rates, and mortality rates. We review these assumptions annually. Our review of demographic assumptions includes analyzing historical patterns and/or referencing industry standard tables, combined with our expectations around future compensation and staffing strategies. The difference between these assumptions and our actual experience results in the recognition of an actuarial gain or loss. Actuarial gains and losses are recorded directly to other comprehensive income or loss. If the total net actuarial gain or loss included in accumulated other comprehensive loss exceeds a threshold of 10% of the greater of the projected benefit obligation or the market related value of plan assets, it is subject to amortization and recorded as a component of net periodic pension cost over the average remaining service lives of the employees participating in the pension or post-retirement benefit plan. The discount rate reflects the current rate at which the pension and other post-retirement liabilities could be effectively settled, considering the timing of expected payments for plan participants. It is used to discount the estimated future obligations of the plans to the present value of the liability reflected in the financial statements. In estimating this rate in countries that have a market of high-quality, fixed-income investments, we consider rates of return on these investments included in various bond indices, adjusted to eliminate the effects of call provisions and differences in the timing and amounts of cash outflows related to the bonds. In other countries where a market of high-quality, fixed-income investments does not exist, we estimate the discount rate using government bond yields or long-term inflation rates. The expected return on plan assets reflects the average rate of earnings expected on the funds invested to provide for the benefits included in the projected benefit obligation. To determine the expected return on plan assets, we use the fair value of plan assets and consider the historical returns earned by similarly invested assets, the rates of return expected on plan assets in the future, and our investment strategy and asset mix with respect to the plans’ funds. Changes to benefit obligations may also be initiated by a settlement or curtailment. A settlement of a defined benefit obligation is an irrevocable transaction that relieves us (or the plan) of primary responsibility for the defined benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. The settlement of all or more than a minor portion of the pension obligation constitutes an event that requires recognition of all or part of the net actuarial gains (or) losses deferred in accumulated other comprehensive loss. Our policy is to apply settlement accounting to the extent our year-to date settlements for a given plan exceed the sum of our forecasted full year service cost and interest cost for that particular plan. A curtailment is an event that significantly reduces the expected years of service of active employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future service. The curtailment accounting provisions are applied on a plan-by-plan basis. The total gain or loss resulting from a curtailment is the sum of two distinct elements: (1) prior service cost write-off (see discussion in "amortization of net prior service cost/credit" above) and (2) curtailment gain or loss. Our policy is that a curtailment event represents one for which we expect a 10% (or greater) reduction in future years of service or an elimination of the accrual of defined benefits for some or all of the future services of 10% (or greater) of the plan's participants. Contributions made to p

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	Revenue Recognition We adopted FASB ASC Topic 606 on January 1, 2018, and we applied the pertinent transition provisions to contracts that were not completed as of January 1, 2018 using the modified retrospective method. Accordingly, periods presented prior to January 1, 2018 are presented under the previous revenue recognition guidance, including FASB ASC Topic 605. Refer to Note 2, "Significant Accounting Policies," for detailed discussion of the accounting policies related to revenue recognition. Because (1) the vast majority of our revenue is derived from the sale of tangible products for which we recognize revenue at a point in time and (2) the contracts that relate to these product shipments are purchase orders that have firm purchase commitments (generally over a short period of time), the adoption of FASB ASC Topic 606 did not have a material effect on our financial statements or results of operations, and no cumulative catch-up adjustment was required. We are electing to apply certain practical expedients that allow for more limited disclosures than those that would otherwise be required by FASB ASC Topic 606, including (1) the disclosure of transaction price allocated to the remaining unsatisfied performance obligations at the end of the period and (2) an explanation of when we expect to recognize the related revenue. We believe that our end markets are the categories that best depict how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The following table presents net revenue disaggregated by segment and end market for the years ended December 31, 2018, 2017, and 2016: Performance Sensing Sensing Solutions Total For the year ended December 31, For the year ended December 31, For the year ended December 31, 2018 2017 2016 2018 2017 2016 2018 2017 2016 Net revenue: Automotive $ 2,076,834 $ 1,989,152 $ 1,973,264 $ 49,961 $ 50,463 $ 47,972 $ 2,126,795 $ 2,039,615 $ 2,021,236 HVOR 550,817 471,448 412,116 — — — 550,817 471,448 412,116 Industrial — — — 336,617 312,137 289,045 336,617 312,137 289,045 Appliance and HVAC — — — 208,482 209,958 187,815 208,482 209,958 187,815 Aerospace — — — 164,294 150,782 151,802 164,294 150,782 151,802 Other — — — 134,622 122,793 140,274 134,622 122,793 140,274 Net revenue $ 2,627,651 $ 2,460,600 $ 2,385,380 $ 893,976 $ 846,133 $ 816,908 $ 3,521,627 $ 3,306,733 $ 3,202,288 In addition, refer to Note 20, "Segment Reporting," for a presentation of net revenue disaggregated by product category and geographic region. Performance Obligations Our net revenue and related cost of revenue are primarily the result of promises to transfer products to our customers. Revenue is recognized when control of the product is transferred to the customer, which is generally when the product is shipped from our warehouse or, in limited instances, when it is received by the customer, depending on the specific terms of the arrangement. Payment for products is generally due a short time (that is, less than a year) after shipment to the customer. Sales to customers generally include a right of return for defective or non-conforming product. Sales returns have not historically been significant in relation to our net revenue and have been within our estimates. Product sales are recorded net of variable consideration, such as sales returns and trade discounts (including volume and early payment incentives), as well as value-added tax and similar taxes. Amounts billed to our customers for shipping and handling are recorded in net revenue. Shipping and handling costs are included in cost of revenue. Warranties Our standard terms of sale provide our customers with a warranty against faulty workmanship and the use of defective materials, which, depending on the product, generally exists for a period of twelve to eighteen months after the date we ship the product to our customer or for a period of twelve months after the date the customer resells our product, whichever comes first. Our liability associated with this warranty is, at our option, to repair the product, replace the product, or provide the customer with a credit. We do not offer separately priced extended warranty or product maintenance contracts. We also sell products to customers under negotiated agreements or where we have accepted the customer’s terms of purchase. In these instances, we may provide additional warranties for longer durations, consistent with differing end market practices, and where our liability is not limited. In addition, many sales take place in situations where commercial or civil codes, or other laws, would imply various warranties and restrict limitations on liability. Contract Assets and Liabilities Our contract assets consist of accounts receivable. Contract liabilities, whereby we receive payment from customers related to our promise to satisfy performance obligations in the future, are not material.

Share-Based Payment Plans

Share-Based Payment Plans	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Payment Plans	Share-Based Payment Plans In connection with the Merger we adopted the Sensata Technologies Holding plc First Amended and Restated 2010 Equity Incentive Plan (the "2010 Equity Incentive Plan"). The purpose of the 2010 Equity Incentive Plan is to promote long-term growth and profitability by providing our present and future eligible directors, officers, and employees with incentives to contribute to, and participate in, our success. There are 10.0 million ordinary shares authorized for grants of awards under the 2010 Equity Incentive Plan, of which 3.3 million were available as of December 31, 2018 . Refer to Note 2, "Significant Accounting Policies," for detailed discussion of the accounting policies related to share-based compensation. Share-Based Compensation Awards We grant option, restricted stock unit ("RSU"), and performance restricted stock unit ("PRSU") awards under the 2010 Equity Incentive Plan. For option and RSU awards vesting is typically subject only to continued employment and the passage of time. For PRSU awards vesting is also subject to continued employment and the passage of time, however the number of awarded units that ultimately vest also depends on the attainment of certain predefined performance criteria. Throughout this Annual Report on Form 10–K RSU and PRSU awards are often referred to collectively as "restricted securities." Options A summary of stock option activity for the years ended December 31, 2018 , 2017 , and 2016 is presented in the table below (amounts have been calculated based on unrounded shares): Number of Options (thousands) Weighted-Average Exercise Price Per Option Weighted-Average Remaining Contractual Term (years) Aggregate Intrinsic Value Balance as of December 31, 2015 3,361 $ 32.89 6.2 $ 47,967 Granted (1) 654 $ 37.89 Forfeited or expired (111 ) $ 43.95 Exercised (358 ) $ 11.05 $ 9,501 Balance as of December 31, 2016 3,546 $ 35.67 6.3 $ 19,844 Granted 387 $ 43.67 Forfeited or expired (1 ) $ 32.03 Exercised (326 ) $ 22.86 $ 7,175 Balance as of December 31, 2017 3,606 $ 37.69 6.0 $ 50,130 Granted 307 $ 51.83 Forfeited or expired (39 ) $ 45.59 Exercised (172 ) $ 35.31 $ 3,143 Balance as of December 31, 2018 3,702 $ 38.89 5.3 $ 27,846 Options vested and exercisable as of December 31, 2018 2,625 $ 36.75 4.2 $ 24,224 Vested and expected to vest as of December 31, 2018 3,556 $ 38.65 5.2 $ 27,407 __________________________________________ (1) Includes 257 performance-based options. A summary of the status of our unvested options as of December 31, 2018 , and of the changes during the year then ended, is presented in the table below (amounts have been calculated based on unrounded shares): Number of Options (thousands) Weighted-Average Grant-Date Fair Value Balance as of December 31, 2017 1,184 $ 13.72 Granted during the year 307 $ 15.70 Vested during the year (383 ) $ 14.49 Forfeited or expired during the year (31 ) $ 14.26 Balance as of December 31, 2018 1,077 $ 13.98 The fair value of stock options that vested during the years ended December 31, 2018 , 2017 , and 2016 was $5.5 million , $5.6 million , and $7.1 million , respectively. Option awards granted to employees under the 2010 Equity Incentive Plan generally vest 25% per year over four years from the grant date. We recognize compensation expense for options on a straight-line basis over the requisite service period, which is generally the same as the vesting period. The options expire ten years from the date of grant. Except as otherwise provided in specific option award agreements, if a participant ceases to be employed by us, options not yet vested expire and are forfeited at the termination date, and options that are fully vested expire 60 days after termination of the participant’s employment for any reason other than termination for cause (in which case the options expire on the participant’s termination date) or due to death or disability (in which case the options expire six months after the participant’s termination date). The weighted-average grant-date fair value per option granted during the years ended December 31, 2018 , 2017 , and 2016 was $15.70 , $14.50 , and $12.08 , respectively. The fair value of options was estimated on the date of grant using the Black-Scholes-Merton option-pricing model. The weighted-average key assumptions used in estimating the grant-date fair value of options for the years ended December 31, 2018, 2017, and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Expected dividend yield 0.00 % 0.00 % 0.00 % Expected volatility 25.00 % 30.00 % 30.00 % Risk-free interest rate 2.62 % 2.08 % 1.48 % Expected term (years) 6.0 6.0 6.0 Fair value per share of underlying ordinary shares $ 51.83 $ 43.67 $ 37.89 Restricted Securities We grant RSU awards that cliff vest between one and three years from the grant date, and we grant PRSU awards that cliff vest three years after the grant date. For PRSU awards, the number of units that ultimately vest depends on the extent to which certain performance criteria are met, as described in the table below. A summary of restricted securities granted in the years ended December 31, 2018, 2017, and 2016 is presented below: Percentage Range of Units That May Vest (1) 0.0% to 150.0% 0.0% to 172.5% 0.0% to 200.0% (Awards in thousands) RSU Awards Granted Weighted-Average PRSU Awards Granted Weighted-Average Grant-Date Fair Value PRSU Awards Granted Weighted-Average Grant-Date Fair Value PRSU Awards Granted Weighted-Average Grant-Date Fair Value 2018 218 $ 51.05 63 $ 51.83 118 $ 51.83 — $ — 2017 182 $ 43.24 — $ — 183 $ 43.67 53 $ 43.33 2016 319 $ 38.33 — $ — 180 $ 38.96 — $ — __________________________________________ (1) Represents the percentage range of PRSU award units granted that may vest according to the terms of the awards, The amounts presented within this table do not reflect our current assessment of the probable outcome of vesting based on the achievement or expected achievement of performance conditions. Compensation cost for the year ended December 31, 2018 reflects our estimate of the probable outcome of the performance conditions associated with the PRSU awards granted in fiscal years 2018, 2017, and 2016. A summary of activity related to outstanding restricted securities for fiscal years 2018 , 2017 , and 2016 is presented in the table below (amounts have been calculated based on unrounded shares): Restricted Securities (thousands) Weighted-Average Grant-Date Fair Value Balance as of December 31, 2015 654 $ 45.87 Granted 499 $ 38.56 Forfeited (48 ) $ 47.01 Vested (185 ) $ 33.41 Balance as of December 31, 2016 920 $ 44.35 Granted 418 $ 43.44 Forfeited (35 ) $ 43.94 Vested (222 ) $ 42.24 Balance as of December 31, 2017 1,081 $ 44.43 Granted 399 $ 51.40 Forfeited (121 ) $ 48.28 Vested (240 ) $ 53.01 Balance as of December 31, 2018 1,119 $ 44.66 Aggregate intrinsic value information for restricted securities as of December 31, 2018 , 2017 , and 2016 is presented below: As of December 31, 2018 2017 2016 Outstanding $ 50,161 $ 55,271 $ 35,845 Expected to vest $ 44,203 $ 42,106 $ 26,937 The weighted-average remaining periods over which the restrictions will lapse as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, (Amounts in years) 2018 2017 2016 Outstanding 1.2 1.3 1.5 Expected to vest 1.2 1.4 1.5 The expected to vest restricted securities are calculated based on the application of a forfeiture rate assumption to all outstanding restricted securities as well as our assessment of the probability of meeting the required performance conditions that pertain to the PRSU awards. Share-Based Compensation Expense The table below presents non-cash compensation expense related to our equity awards, which is recorded within SG&A expense in the consolidated statements of operations, during the identified periods: For the year ended December 31, 2018 2017 2016 Options $ 5,739 $ 6,046 $ 7,094 Restricted securities 18,086 13,773 10,331 Total share-based compensation expense $ 23,825 $ 19,819 $ 17,425 In 2018, we recognized a $3.0 million income tax benefit associated with share-based compensation expense. We recognized no such tax benefit in either fiscal year 2017 or 2016. The table below presents unrecognized compensation expense at December 31, 2018 for each class of award, and the remaining expected term for this expense to be recognized: Unrecognized Compensation Expense Expected Recognition (years) Options $ 9,329 2.1 Restricted securities 23,168 1.6 Total unrecognized compensation expense $ 32,497

Restructuring and Other Charges

Restructuring and Other Charges, Net	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges, Net	Restructuring and Other Charges, Net Restructuring and other charges, net for the years ended December 31, 2018, 2017, and 2016 were as follows: For the year ended December 31, 2018 2017 2016 Severance costs, net (1) $ 7,566 $ 11,125 $ 813 Facility and other exit costs (2) 877 7,850 3,300 Gain on sale of Valves Business (3) (64,423 ) — — Other (4) 8,162 — — Restructuring and other charges, net $ (47,818 ) $ 18,975 $ 4,113 __________________________________________ (1) Severance costs for the year ended December 31, 2018 were primarily related to limited workforce reductions of manufacturing, engineering, and administrative positions as well as the elimination of certain positions related to site consolidations. Severance costs, net recognized during the year ended December 31, 2017 included $8.4 million of charges related to the closure of our facility in Minden, Germany, a site we obtained in connection with the acquisition of certain subsidiaries of Custom Sensors & Technologies Ltd. ("CST"). Severance costs for the year ended December 31, 2016 primarily related to charges recorded in connection with acquired businesses and the termination of a limited number of employees in various locations throughout the world. (2) Facility and other exit costs for the year ended December 31, 2017 included $3.2 million of costs related to the closure of our facility in Minden, Germany and the transfer of equipment to alternate operating sites as well as $3.1 million of costs associated with the consolidation of two other manufacturing sites in Europe. Facility and other exit costs for the year ended December 31, 2016 primarily related to the relocation of manufacturing lines from our facility in the Dominican Republic to a manufacturing facility in Mexico. (3) In fiscal year 2018 we completed the sale of the the capital stock of Schrader Bridgeport International, Inc. and August France Holding Company SAS (collectively, the "Valves Business"). The gain on this sale is included in restructuring and other charges, net. Refer to Note 17, "Acquisitions and Divestitures," for further discussion of the sale of the Valves Business. (4) In the year ended December 31, 2018, we incurred $5.9 million of incremental direct costs in order to transact the sale of the Valves Business and $2.2 million of deferred compensation incurred in connection with the acquisition of GIGAVAC. Refer to Note 17, "Acquisitions and Divestitures," for further discussion. Changes to our severance liability during the years ended December 31, 2018 and 2017 were as follows: Severance Balance as of December 31, 2016 $ 17,350 Charges, net of reversals 11,125 Payments (22,511 ) Foreign currency remeasurement 1,619 Balance as of December 31, 2017 7,583 Charges, net of reversals 7,566 Payments (8,341 ) Foreign currency remeasurement (217 ) Balance as of December 31, 2018 $ 6,591 The following table outlines the current and long-term components of our severance liability recognized in the consolidated balance sheets as of December 31, 2018 and 2017 . As of December 31, 2018 2017 Accrued expenses and other current liabilities $ 6,591 $ 4,184 Other long-term liabilities — 3,399 Total severance liability $ 6,591 $ 7,583

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Effective April 27, 2006 (inception), and concurrent with the completion of the acquisition of the Sensors & Controls business ("S&C") of Texas Instruments Incorporated ("TI") (the "2006 Acquisition"), we commenced filing tax returns in the Netherlands as a stand-alone entity. On March 28, 2018, the Company reincorporated its headquarters in the U.K. Several of our Dutch resident subsidiaries continue to be taxable entities in the Netherlands and file tax returns under Dutch fiscal unity (i.e., consolidation). Prior to April 30, 2008, we filed one consolidated tax return in the U.S. On April 30, 2008, our U.S. subsidiaries executed a separation and distribution agreement that divided our U.S. businesses, resulting in two separate U.S. consolidated federal income tax returns. On January 1, 2016, our U.S. subsidiaries resumed filing one consolidated tax return. Our remaining subsidiaries will file income tax returns in the countries in which they are incorporated and/or operate, including Belgium, Bulgaria, China, France, Germany, Japan, Malaysia, Mexico, the Netherlands, South Korea, and the U.K. The 2006 Acquisition purchase accounting and the related debt and equity capitalization of the various subsidiaries of the consolidated company, and the realignment of the functions performed and risks assumed by the various subsidiaries, are of significant consequence to the determination of future book and taxable income of the respective subsidiaries and Sensata as a whole. Refer to Note 2, "Significant Accounting Policies," for detailed discussion of the accounting policies related to income taxes. Effects of the Tax Cuts and Jobs Act On December 22, 2017, the Tax Cuts and Jobs Act of 2017 ("Tax Reform" or "the Act") was signed into law. The Act reduced the U.S. federal corporate tax rate from 35% to 21%, required companies to pay a one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred, and created new taxes on certain foreign sourced earnings. Given the significance of the legislation, the U.S. Securities and Exchange Commission staff issued Staff Accounting Bulletin No. 118 ("SAB 118"). In fiscal year 2017 and the first nine months of 2018, we recorded provisional amounts for certain enactment-date effects of the Act by applying the guidance in SAB 118 because we had not yet completed our enactment-date accounting for these effects. In fiscal years 2018 and 2017 we recorded tax expense related to the enactment-date effects of the Act that included recording the one-time transition tax liability related to undistributed earnings of certain foreign subsidiaries which were not previously taxed, and adjusting deferred tax assets and liabilities. We applied the guidance in SAB 118 when accounting for the enactment-date effects of the Act in 2017 and throughout 2018. At December 31, 2017, we had not completed our accounting for all of the enactment-date income tax effects of the Act under FASB ASC Topic 740 for the following aspects: impact on assessment on the measurement of deferred tax assets and liabilities, including the potential impact of the tax on global intangible low-taxed income, and the one-time transition tax. As of December 31, 2018, we have completed our accounting for all of the enactment-date income tax effects of the Act. As further discussed below, during fiscal year 2018 we did not record an adjustment to the provisional amounts recorded as of December 31, 2017. Deferred tax assets and liabilities In the year ended December 31, 2017, we remeasured certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is generally 21% , by recording a tax benefit of $73.7 million , which was principally associated with indefinite lived intangible assets. Absent this deferred tax liability, we would have been in a net deferred tax asset position that was offset by a valuation allowance at December 31, 2017. Upon further analysis of certain aspects of the Act and refinement of our calculations during the year ended December 31, 2018, we determined that no further adjustment was necessary. One-time transition tax The one-time transition tax is based on our total post-1986 earnings and profits (E&P) of subsidiaries held by our U.S. companies that we previously deferred from U.S. income taxes. Due to tax attributes available, which had a full valuation allowance, to offset the anticipated transition tax, we provisionally did not record an income tax expense related to this tax at December 31, 2017. Upon further analyses of the Act and Notices and regulations issued and proposed by the U.S. Department of the Treasury and the Internal Revenue Service, we finalized our calculations of the transition tax liability during 2018. The transition tax was fully offset by tax losses incurred in 2017, resulting in no additional tax liability. Global intangible low-taxed income (GILTI) The Act subjects a U.S. shareholder to tax on global intangible low-taxed income (GILTI) earned by certain foreign subsidiaries. The FASB Staff Q&A, Topic 740, No. 5, Accounting for Global Intangible Low-Taxed Income , states that an entity can make an accounting policy election to either recognize deferred taxes for temporary basis differences expected to reverse as GILTI in future years or to provide for the tax expense related to GILTI in the year the tax is incurred as a period expense only. We have elected to account for GILTI in the year the tax is incurred. Income before taxes Income/(loss) before taxes for the years ended December 31, 2018 , 2017 , and 2016 was categorized by jurisdiction as follows: U.S. Non-U.S. Total 2018 $ 68,027 $ 458,348 $ 526,375 2017 $ (11,425 ) $ 413,866 $ 402,441 2016 $ (43,842 ) $ 365,287 $ 321,445 (Benefit from)/provision for income taxes (Benefit from)/provision for income taxes for the years ended December 31, 2018 , 2017 , and 2016 was categorized by jurisdiction as follows: U.S. Federal Non-U.S. U.S. State Total 2018 Current $ 5,700 $ 64,666 $ 1,082 $ 71,448 Deferred (109,663 ) (18,770 ) (15,635 ) (144,068 ) Total $ (103,963 ) $ 45,896 $ (14,553 ) $ (72,620 ) 2017 Current $ — $ 50,601 $ 240 $ 50,841 Deferred (56,956 ) (1,104 ) 1,303 (56,757 ) Total $ (56,956 ) $ 49,497 $ 1,543 $ (5,916 ) 2016 Current $ 464 $ 49,977 $ 226 $ 50,667 Deferred 10,036 2,010 (3,702 ) 8,344 Total $ 10,500 $ 51,987 $ (3,476 ) $ 59,011 Effective tax rate reconciliation The principal reconciling items from income tax computed at the U.S. statutory tax rate for the years ended December 31, 2018 , 2017 , and 2016 were as follows: For the year ended December 31, 2018 2017 2016 Tax computed at statutory rate of 21% in 2018 and 35% in 2017 and 2016 $ 110,539 $ 140,854 $ 112,506 Change in valuation allowances (123,426 ) (3,368 ) 30,565 Foreign tax rate differential (41,200 ) (111,990 ) (86,339 ) Change in tax laws or rates (22,264 ) 3,912 2,542 Research and development incentives (19,475 ) (5,922 ) (10,961 ) U.S. state taxes, net of federal benefit (11,499 ) 1,087 (2,166 ) Unrealized foreign exchange losses, net 11,346 830 3,829 Reserve for tax exposure 10,775 38,013 11,227 Withholding taxes not creditable 8,734 3,896 6,014 U.S. Tax Reform impact — (73,668 ) — Other 3,850 440 (8,206 ) (Benefit from)/provision for income taxes $ (72,620 ) $ (5,916 ) $ 59,011 Change in valuation allowances During the years ended December 31, 2018, 2017, and 2016 we released a portion of our valuation allowance, recognizing a deferred tax benefit. Refer to the discussion below related to the release of the valuation allowance. U.S. Tax Reform Impact As a result of Tax Reform, the U.S. statutory tax rate was lowered from 35% to 21%, effective on January 1, 2018. We were required to remeasure our U.S. deferred tax assets and liabilities to the new tax rate. For the year ended December 31, 2017 we recorded $73.7 million of income tax benefit for the remeasurement of the deferred tax liabilities associated with indefinite-lived intangible assets that will reverse at the new 21% rate. Absent this deferred tax liability, the U.S. operation was in a net deferred tax asset position that was offset by a full valuation allowance at December 31, 2017. We reduced our net deferred tax assets excluding the indefinite-lived intangible assets and the corresponding valuation allowance by $120.0 million . Foreign tax rate differential We operate in locations outside the U.S., including Bermuda, Bulgaria, China, Malaysia, the Netherlands, South Korea, and the U.K., that historically have had statutory tax rates different than the U.S. statutory rate. This can result in a foreign tax rate differential that may reflect a tax benefit or detriment. This foreign rate differential can change from year to year based upon the jurisdictional mix of earnings and changes in current and future enacted tax rates. Certain of our subsidiaries are currently eligible, or have been eligible, for tax exemptions or holidays in their respective jurisdictions. From 2016 through 2018, a subsidiary in Changzhou, China was eligible for a reduced tax rate of 15% . The impact on current tax expense of the tax holidays and exemptions is included in the foreign tax rate differential line in the reconciliation of the statutory rate to effective rate. The remeasurement of the deferred tax assets and liabilities is included in the change in tax laws or rates line. Research and development incentives Certain income of our U.K. subsidiaries is eligible for lower tax rates under the "patent box" regime, resulting in certain of our intellectual property income being taxed at a rate lower than the U.K. statutory tax rate. Certain R&D expenses are eligible for a bonus deduction under China’s R&D super deduction regime. In 2018, we substantially completed an assessment of our ability to claim an R&D credit in the U.S. As a result of this assessment, we recorded a tax benefit of $10.0 million . Annually, we expect our R&D credit to result in a net benefit of approximately $2.5 million per year. Prior to fiscal year 2018, the deferred tax asset related to these R&D credits would have been offset by the valuation allowance. Withholding taxes not creditable Withholding taxes may apply to intercompany interest, royalty, management fees, and certain payments to third parties. Such taxes are expensed if they cannot be credited against the recipient’s tax liability in its country of residence. Additional consideration also has been given to the withholding taxes associated with the remittance of presently unremitted earnings and the recipient's ability to obtain a tax credit for such taxes. Earnings are not considered to be indefinitely reinvested in the jurisdictions in which they were earned. In certain jurisdictions we record withholding and other taxes on intercompany payments including dividends. Deferred income tax assets and liabilities The primary components of deferred income tax assets and liabilities as of December 31, 2018 and 2017 were as follows: As of December 31, 2018 2017 Deferred tax assets: Inventories and related reserves $ 14,171 $ 17,287 Prepaid and accrued expenses 71,004 25,920 Property, plant and equipment 14,571 13,396 Intangible assets 27,122 22,050 Unrealized exchange loss 4,255 12,265 Net operating loss, interest expense, and other carryforwards 296,255 349,244 Pension liability and other 8,701 8,880 Share-based compensation 11,332 12,195 Other 10,151 7,028 Total deferred tax assets 457,562 468,265 Valuation allowance (157,043 ) (277,315 ) Net deferred tax asset 300,519 190,950 Deferred tax liabilities: Property, plant and equipment (15,795 ) (23,222 ) Intangible assets and goodwill (440,348 ) (428,028 ) Unrealized exchange gain (6,912 ) (6,031 ) Tax on undistributed earnings of subsidiaries (35,187 ) (38,894 ) Total deferred tax liabilities (498,242 ) (496,175 ) Net deferred tax liability $ (197,723 ) $ (305,225 ) Valuation allowance and net operating loss carryforwards In measuring our deferred tax assets, we consider all available evidence, both positive and negative, to determine whether, based on the weight of that evidence, a valuation allowance is needed for all or some portion of the deferred tax assets. Significant judgment is required in considering the relative impact of the negative and positive evidence, and weight given to each category of evidence is commensurate with the extent to which it can be objectively verified. The more negative evidence that exists, the more positive evidence is necessary, and the more difficult it is to support a conclusion that a valuation allowance is not needed. Additionally, we utilize the "more likely than not" criteria established in FASB ASC Topic 740 to determine whether the future tax benefit from the deferred tax assets should be recognized. As a result, we have established valuation allowances on the deferred tax assets in jurisdictions that have incurred net operating losses and in which it is more likely than not that such losses will not be utilized in the foreseeable future. As of each reporting date, we consider new evidence, both positive and negative, that could impact our view with regard to future realization of deferred tax assets. In the fourth quarter of 2018, based on reversals of existing taxable differences, projections of future taxable income, and taxable income in the current year, we have determined that sufficient positive evidence exists as of December 31, 2018, to conclude that it is more likely than not the additional deferred taxes of $122.1 million are realizable, and therefore, reduced the valuation allowance accordingly. One of the provisions of the Tax Act limits the deduction for net interest expense incurred by U.S. corporations to 30% of adjusted taxable income. As a result of this provision, we have determined that certain of our interest carryforwards may be subject to limitation, and as result, determined that it was appropriate to retain the valuation allowance on a significant portion of these carryforwards. For tax purposes, certain goodwill and indefinite-lived intangible assets are generally amortizable over 6 to 20 years. For book purposes, goodwill and indefinite-lived intangible assets are not amortized, but are tested for impairment annually. The tax amortization of goodwill and indefinite-lived intangible assets will result in a taxable temporary difference, which will not reverse unless the related book goodwill or intangible asset is impaired or written off. This liability may not be used to support deductible temporary differences, such as net operating loss carryforwards, which may expire within a definite period. The total valuation allowance for the years ended December 31, 2018 and 2017 decreased $120.3 million and $22.4 million , respectively. Subsequently reported tax benefits relating to the valuation allowance for deferred tax assets as of December 31, 2018 will be allocated to income tax benefit recognized in the consolidated statements of operations. As of December 31, 2018 , we have U.S. federal net operating loss carryforwards of $416.0 million and suspended interest expense carryforwards of $460.2 million . U.S. federal net operating loss carryforwards will expire from 2027 to 2037, state net operating loss carryforwards will expire from 2019 to 2037, and the interest carryovers have an unlimited life. It is more likely than not that these net operating losses will not be utilized in the foreseeable future. We also have non-U.S. net operating loss carryforwards of $238.0 million , which will begin to expire in 2019. Unrecognized tax benefits A reconciliation of the amount of unrecognized tax benefits is as follows: Balance as of December 31, 2015 $ 38,057 Increases related to prior year tax positions 6,390 Increases related to current year tax positions 8,462 Decreases related to lapse of applicable statute of limitations (256 ) Decreases related to settlements with tax authorities (6,755 ) Balance as of December 31, 2016 45,898 Increases related to prior year tax positions 7,968 Increases related to current year tax positions 14,585 Decreases related to lapse of applicable statute of limitations (1,356 ) Decreases related to settlements with tax authorities (7,211 ) Balance as of December 31, 2017 59,884 Increases related to prior year tax positions 14,609 Increases related to current year tax positions 15,676 Increases related to business combination 1,000 Decreases related to prior year tax positions (1,144 ) Decreases related to foreign currency exchange rate fluctuations (416 ) Balance as of December 31, 2018 $ 89,609 We record interest and penalties related to unrecognized tax benefits in the consolidated statements of operations and the consolidated balance sheets. The table that follows presents the (income)/expense related to such interest and penalties recognized in the consolidated statements of operations during the years ended December 31, 2018 , 2017, and 2016, and the amount of interest and penalties recorded on the consolidated balance sheets as of December 31, 2018 and 2017: Statements of Operations Balance Sheets For the year ended December 31, As of December 31, (Dollars in millions) 2018 2017 2016 2018 2017 Interest $ (0.2 ) $ 0.2 $ 0.1 $ 0.4 $ 0.7 Penalties $ (0.2 ) $ (0.1 ) $ 0.1 $ 0.4 $ 0.5 The liability for unrecognized tax benefits generally relates to the allocation of taxable income to the various jurisdictions where we are subject to tax. At December 31, 2018 , we anticipate that the liability for unrecognized tax benefits could decrease by up to $0.5 million within the next twelve months due to the expiration of certain statutes of limitation or the settlement of examinations or issues with tax authorities. The amount of unrecognized tax benefits as of December 31, 2018 and 2017 that if recognized, would impact our effective tax rate are $11.5 million and $5.4 million , respectively. Our major tax jurisdictions include Belgium, Bulgaria, China, France, Germany, Japan, Malaysia, Mexico, the Netherlands, South Korea, the U.K., and the U.S. These jurisdictions generally remain open to examination by the relevant tax authority for the tax years 2006 through 2018. Indemnifications We have various indemnification provisions in place with parties including TI, Honeywell, William Blair, Tomkins Limited, and Custom Sensors & Technologies Ltd. These provisions provide for the reimbursement of future tax liabilities paid by us that relate to the pre-acquisition periods of the acquired businesses including S&C, First Technology Automotive and Special Products, Airpax Holdings, Inc., August Cayman Company, Inc. ("Schrader"), CST, and GIGAVAC.

Other, Net

Other, Net	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Other, Net	Other, Net Other, net consisted of the following for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Currency remeasurement (loss)/gain on net monetary assets (1) $ (18,905 ) $ 18,041 $ (10,621 ) Gain/(loss) on foreign currency forward contracts (2) 2,070 (15,618 ) (1,850 ) (Loss)/gain on commodity forward contracts (2) (8,481 ) 9,989 7,399 Loss on debt financing (3) (2,350 ) (2,670 ) — Net periodic benefit cost, excluding service cost (4) (3,585 ) (3,402 ) (192 ) Other 886 75 171 Other, net $ (30,365 ) $ 6,415 $ (5,093 ) __________________________________________ (1) Relates to the remeasurement of non-U.S. dollar denominated net monetary assets and liabilities into U.S. dollars. Refer to the Foreign Currency section of Note 2, "Significant Accounting Policies," for discussion. (2) Relates to changes in the fair value of derivative financial instruments not designated as cash flow hedges. Refer to Note 19, "Derivative Instruments and Hedging Activities," for a more detailed discussion. (3) Refer to Note 14, "Debt," for a more detailed discussion of our debt financing transactions. (4) On January 1, 2018, we adopted FASB ASU No. 2017-07, which requires the non-service cost components to be presented apart from the service cost component and outside of profit from operations. Refer to the Pension and Other Post-Retirement Benefits section of Note 2, "Significant Accounting Policies," and Note 13, "Pension and Other Post-Retirement Benefits," for additional details.

Net Income Per Share

Net Income Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Net Income Per Share	Net Income per Share Basic and diluted net income per share are calculated by dividing net income by the number of basic and diluted weighted-average ordinary shares outstanding during the period. For the years ended December 31, 2018 , 2017 , and 2016 , the weighted-average ordinary shares outstanding used to calculate basic and diluted net income per share were as follows: For the year ended December 31, (Shares in thousands) 2018 2017 2016 Basic weighted-average ordinary shares outstanding 168,570 171,165 170,709 Dilutive effect of stock options 822 616 489 Dilutive effect of unvested restricted securities 467 388 262 Diluted weighted-average ordinary shares outstanding 169,859 172,169 171,460 Net income and net income per share are presented in the consolidated statements of operations. Certain potential ordinary shares were excluded from our calculation of diluted weighted-average ordinary shares outstanding because either they would have had an anti-dilutive effect on net income per share or they related to equity awards that were contingently issuable for which the contingency had not been satisfied. Refer to Note 4, "Share-Based Payment Plans," for further discussion of our equity awards. These potential ordinary shares are as follows: For the year ended December 31, (Shares in thousands) 2018 2017 2016 Anti-dilutive shares excluded 930 1,410 1,401 Contingently issuable shares excluded 687 871 606

Inventories

Inventories	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories The components of inventories as of December 31, 2018 and 2017 were as follows: As of December 31, 2018 2017 Finished goods $ 187,095 $ 195,089 Work-in-process 104,405 92,678 Raw materials 200,819 158,362 Inventories $ 492,319 $ 446,129 Refer to Note 2, "Significant Accounting Policies," for a discussion of our accounting policies related to inventories.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net PP&E, net as of December 31, 2018 and 2017 consisted of the following: As of December 31, 2018 2017 Land $ 22,021 $ 23,077 Buildings and improvements 259,182 250,475 Machinery and equipment 1,220,285 1,132,461 Total PP&E 1,501,488 1,406,013 Accumulated depreciation (714,310 ) (655,964 ) PP&E, net $ 787,178 $ 750,049 Depreciation expense for PP&E, including amortization of leasehold improvements and depreciation of assets under capital leases, totaled $106.0 million , $109.3 million , and $106.9 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. PP&E, net as of December 31, 2018 and 2017 included the following assets under capital leases: As of December 31, 2018 2017 Assets under capital leases in PP&E $ 49,714 $ 45,249 Accumulated depreciation (22,508 ) (20,631 ) Assets under capital leases in PP&E, net $ 27,206 $ 24,618 Refer to Note 2, "Significant Accounting Policies," for a discussion of our accounting policies related to PP&E, net.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets, Net	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets, Net	Goodwill and Other Intangible Assets, Net The following table outlines the changes in goodwill by segment for the year ended December 31, 2018. There were no acquisitions or other changes to goodwill during the year ended December 31, 2017. Performance Sensing Sensing Solutions Total Gross Accumulated Net Gross Accumulated Net Gross Accumulated Net Balance as of December 31, 2016 and 2017 $ 2,148,135 $ — $ 2,148,135 $ 875,795 $ (18,466 ) $ 857,329 $ 3,023,930 $ (18,466 ) $ 3,005,464 Divestiture of Valves Business (38,800 ) — (38,800 ) — — — (38,800 ) — (38,800 ) Acquisition of GIGAVAC 46,298 — 46,298 68,340 — 68,340 114,638 — 114,638 Balance as of December 31, 2018 $ 2,155,633 $ — $ 2,155,633 $ 944,135 $ (18,466 ) $ 925,669 $ 3,099,768 $ (18,466 ) $ 3,081,302 Goodwill attributed to the acquisition of GIGAVAC reflects our allocation of purchase price to the estimated fair value of certain assets acquired and liabilities assumed. Preliminary goodwill attributed to the acquisition of GIGAVAC has been assigned to our segments in the above table based on a methodology using anticipated future earnings of the components of business. The allocation is preliminary and is subject to change prior to the end of the measurement period. Goodwill attributed to the sale of the Valves Business is based on the relative fair value of the Valves Business to the Performance Sensing reporting unit. Refer to Note 17, "Acquisitions and Divestitures," for further discussion of the acquisition of GIGAVAC and the sale of the Valves Business. In connection with the sale of the Valves Business, as required by FASB ASC Topic 350, we evaluated the goodwill of the retained portion of the Performance Sensing reporting unit for impairment using the quantitative method and determined that it was not impaired. In addition, we evaluated our goodwill for impairment as of October 1, 2018 using a combination of the qualitative and quantitative methods. Refer to Note 2, "Significant Accounting Policies," for discussion of these methods. Based on these analyses, we have determined that, for the Performance Sensing reporting unit, which was subject to the qualitative method, it was more likely than not that its fair value was greater than its carrying value at that date, and the Electrical Protection, Industrial Sensing, Aerospace, Power Management, and Interconnection reporting units, which were subject to the quantitative method, that their fair values exceeded their carrying values at that date. We evaluated our other indefinite-lived intangible assets for impairment as of October 1, 2018 , using the quantitative method, and we determined that the fair value of each indefinite–lived intangible asset exceeded its respective carrying value on that date. The following table outlines the components of definite-lived intangible assets as of December 31, 2018 and 2017 : As of December 31, Weighted- 2018 2017 Gross Accumulated Accumulated Net Gross Accumulated Accumulated Net Completed technologies 14 $ 759,008 $ (475,295 ) $ (2,430 ) $ 281,283 $ 727,968 $ (418,987 ) $ (2,430 ) $ 306,551 Customer relationships 11 1,825,698 (1,352,189 ) (12,144 ) 461,365 1,771,198 (1,287,581 ) (12,144 ) 471,473 Non-compete agreements 8 23,400 (23,400 ) — — 23,400 (23,400 ) — — Tradenames 21 66,154 (13,468 ) — 52,686 50,754 (11,094 ) — 39,660 Capitalized software and other (1) 7 65,896 (32,509 ) — 33,387 59,909 (25,939 ) — 33,970 Total 12 $ 2,740,156 $ (1,896,861 ) $ (14,574 ) $ 828,721 $ 2,633,229 $ (1,767,001 ) $ (14,574 ) $ 851,654 __________________________________________ (1) During the years ended December 31, 2018 and 2017, we wrote-off approximately $0.2 million and $1.1 million , respectively, of fully-amortized capitalized software that was not in use. Refer to Note 17, "Acquisitions and Divestitures," for details of definite-lived intangible assets recognized as a result of the acquisition of GIGAVAC. The following table outlines amortization of intangible assets for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Acquisition-related definite-lived intangible assets $ 132,235 $ 153,729 $ 194,208 Capitalized software 7,091 7,321 7,290 Amortization of intangible assets $ 139,326 $ 161,050 $ 201,498 The table below presents estimated amortization of intangible assets for each of the next five years: For the year ended December 31, 2019 $ 142,198 2020 $ 127,046 2021 $ 110,203 2022 $ 95,029 2023 $ 81,055 In addition to the above, we own the Klixon ® and Airpax ® tradenames, which are indefinite-lived intangible assets, as they have each been in continuous use for over 65 years , and we have no plans to discontinue using them. We have recorded $59.1 million and $9.4 million , respectively, on the consolidated balance sheets related to these tradenames.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2018
Accrued expenses and other current liabilities [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities as of December 31, 2018 and 2017 consisted of the following: As of December 31, 2018 2017 Accrued compensation and benefits $ 68,936 $ 89,816 Accrued interest 40,550 36,919 Foreign currency and commodity forward contracts 7,710 35,094 Accrued severance 6,591 4,184 Current portion of pension and post-retirement benefit obligations 3,176 3,342 Other accrued expenses and current liabilities 91,167 90,205 Accrued expenses and other current liabilities $ 218,130 $ 259,560

Pension and Other Post-Retireme

Pension and Other Post-Retirement Benefits	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Pension and Other Post-Retirement Benefits	Pension and Other Post-Retirement Benefits We provide various pension and other post-retirement plans for current and former employees, including defined benefit, defined contribution, and retiree healthcare benefit plans. Refer to Note 2, "Significant Accounting Policies," for a detailed discussion of the accounting policies related to our pension and other post-retirement benefit plans. U.S. Benefit Plans The principal retirement plans in the U.S. include a qualified defined benefit pension plan and a defined contribution plan. In addition, we provide post-retirement medical coverage and non-qualified benefits to certain employees. Defined Benefit Pension Plans The benefits under the qualified defined benefit pension plan are determined using a formula based upon years of service and the highest five consecutive years of compensation. TI closed the qualified defined benefit pension plan to participants hired after November 1997. In addition, participants eligible to retire under the TI plan as of April 26, 2006 were given the option of continuing to participate in the qualified defined benefit pension plan or retiring under the qualified defined benefit pension plan and thereafter participating in an enhanced defined contribution plan. We intend to contribute amounts to the qualified defined benefit pension plan in order to meet the minimum funding requirements of federal laws and regulations, plus such additional amounts as we deem appropriate. During the year ended December 31, 2018, we contributed $4.0 million to the qualified defined benefit plan. We do not expect to contribute to the qualified defined benefit pension plan in fiscal year 2019. We also sponsor a non-qualified defined benefit pension plan, which is closed to new participants and is unfunded. Effective January 31, 2012, we froze the defined benefit pension plans and eliminated future benefit accruals. Defined Contribution Plans As of 2018, we have one defined contribution plan for U.S. employees, which provides for an employer matching contribution of up to 4% of the employee's annual eligible earnings. The aggregate expense related to the defined contribution plan was $5.7 million , $5.9 million , and $5.8 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. Retiree Healthcare Benefit Plan We offer access to group medical coverage during retirement to some of our U.S. employees. We make contributions toward the cost of those retiree medical benefits for certain retirees. The contribution rates are based upon varying factors, the most important of which are an employee’s date of hire, date of retirement, years of service, and eligibility for Medicare benefits. The balance of the cost is borne by the participants in the plan. For the year ended December 31, 2018 , we did not, and do not expect to, receive any amount of Medicare Part D Federal subsidy. Our projected benefit obligation as of December 31, 2018 and 2017 did not include an assumption for a Federal subsidy. In the fourth quarter of 2013, we amended the retiree healthcare benefit plan to eliminate supplemental medical coverage offered to Medicare eligible retirees, effective January 1, 2014. As a result of the amendment, we recognized a gain of $7.2 million that was recorded in other comprehensive income/(loss) in the fourth quarter of 2013, which is being amortized as a component of net periodic benefit cost over a period of approximately 5 years from the date of recognition, which represents the remaining average service period to the full eligibility dates of the active plan participants. Non-U.S. Benefit Plans Retirement coverage for non-U.S. employees is provided through separate defined benefit and defined contribution plans. Retirement benefits are generally based on an employee’s years of service and compensation. Funding requirements are determined on an individual country and plan basis and are subject to local country practices and market circumstances. We do not expect to contribute to the non-U.S. defined benefit plans during 2019. Impact on Financial Statements The components of net periodic benefit cost/(credit) associated with our defined benefit and retiree healthcare plans for the years ended December 31, 2018 , 2017 , and 2016 were as follows: For the year ended December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Service cost $ — $ 50 $ 3,122 $ — $ 74 $ 2,582 $ — $ 83 $ 2,716 Interest cost 1,473 272 1,310 1,604 325 1,053 1,461 364 1,179 Expected return on plan assets (1,710 ) — (929 ) (2,151 ) — (905 ) (2,684 ) — (952 ) Amortization of net loss 1,080 5 407 1,149 54 287 707 143 488 Amortization of net prior service (credit)/cost — (1,728 ) 6 — (1,335 ) (4 ) — (1,335 ) (20 ) Loss on settlement 1,047 — 1,461 3,225 — 100 1,293 — 34 Loss/(gain) on curtailment — — 891 — — — — — (486 ) Net periodic benefit cost/(credit) $ 1,890 $ (1,401 ) $ 6,268 $ 3,827 $ (882 ) $ 3,113 $ 777 $ (745 ) $ 2,959 On January 1, 2018 we adopted the guidance in FASB ASU No. 2017-07, which requires that entities present the non–service components of net periodic benefit cost separately from the financial statement line item(s) that include service cost, outside of operating income. As a result of this adoption, the components of net periodic benefit cost, excluding service cost, were reclassified in our consolidated statements of operations from various operating cost and expense line items to other, net for the years ended December 31, 2017 and 2016 . The table below presents the effects of this adjustment. For the year ended December 31, 2017 2016 As Reported Adjustment As Adjusted As Reported Adjustment As Adjusted Net revenue $ 3,306,733 $ — $ 3,306,733 $ 3,202,288 $ — $ 3,202,288 Operating costs and expenses: Cost of revenue 2,141,308 (2,410 ) 2,138,898 2,084,261 (102 ) 2,084,159 Research and development 130,204 (77 ) 130,127 126,665 (9 ) 126,656 Selling, general and administrative 302,811 (915 ) 301,896 293,587 (81 ) 293,506 Amortization of intangible assets 161,050 — 161,050 201,498 — 201,498 Restructuring and other charges, net 18,975 — 18,975 4,113 — 4,113 Total operating costs and expenses 2,754,348 (3,402 ) 2,750,946 2,710,124 (192 ) 2,709,932 Profit from operations 552,385 3,402 555,787 492,164 192 492,356 Interest expense, net (159,761 ) — (159,761 ) (165,818 ) — (165,818 ) Other, net 9,817 (3,402 ) 6,415 (4,901 ) (192 ) (5,093 ) Income before taxes $ 402,441 $ — $ 402,441 $ 321,445 $ — $ 321,445 The following table outlines the rollforward of the benefit obligation and plan assets for the defined benefit and retiree healthcare benefit plans for the years ended December 31, 2018 and 2017 : For the year ended December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Change in benefit obligation: Beginning balance $ 48,615 $ 9,692 $ 67,413 $ 57,679 $ 10,296 $ 59,056 Service cost — 50 3,122 — 74 2,582 Interest cost 1,473 272 1,310 1,604 325 1,053 Plan participants’ contributions — 475 60 — 519 120 Plan amendment — (3,243 ) — — — (6 ) Actuarial (gain)/loss (519 ) (124 ) 2,777 2,936 (197 ) 2,692 Curtailments — — 931 — — — Benefits paid (4,400 ) (1,105 ) (6,262 ) (13,604 ) (1,325 ) (2,572 ) Divestiture — — (3,310 ) — — — Foreign currency remeasurement — — (350 ) — — 4,488 Ending balance $ 45,169 $ 6,017 $ 65,691 $ 48,615 $ 9,692 $ 67,413 Change in plan assets: Beginning balance $ 41,101 $ — $ 41,222 $ 52,042 $ — $ 37,361 Actual return on plan assets (811 ) — (1,308 ) 2,319 — 1,241 Employer contributions 3,985 630 5,992 344 1,325 2,586 Plan participants’ contributions — 475 60 — — 120 Benefits paid (4,400 ) (1,105 ) (6,262 ) (13,604 ) (1,325 ) (2,572 ) Foreign currency remeasurement — — 164 — — 2,486 Ending balance $ 39,875 $ — $ 39,868 $ 41,101 $ — $ 41,222 Funded status at end of year $ (5,294 ) $ (6,017 ) $ (25,823 ) $ (7,514 ) $ (9,692 ) $ (26,191 ) Accumulated benefit obligation at end of year $ 45,169 NA $ 59,948 $ 48,615 NA $ 60,588 The following table outlines the funded status amounts recognized in the consolidated balance sheets as of December 31, 2018 and 2017 : As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Noncurrent assets $ — $ — $ — $ — $ — $ — Current liabilities (595 ) (1,116 ) (1,465 ) (638 ) (1,210 ) (1,494 ) Noncurrent liabilities (4,699 ) (4,901 ) (24,358 ) (6,876 ) (8,482 ) (24,697 ) Funded status $ (5,294 ) $ (6,017 ) $ (25,823 ) $ (7,514 ) $ (9,692 ) $ (26,191 ) Balances recognized within accumulated other comprehensive loss that have not been recognized as components of net periodic benefit cost, net of tax, as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Net prior service credit $ — $ (692 ) $ (10 ) $ — $ 823 $ (220 ) $ — $ (512 ) $ (218 ) Net loss $ 20,759 $ 880 $ 14,425 $ 20,884 $ 1,009 $ 12,489 $ 22,490 $ 1,260 $ 11,070 We expect to amortize a loss of $0.5 million from accumulated other comprehensive loss to net periodic benefit cost during 2019. Information for plans with an accumulated benefit obligation in excess of plan assets as of December 31, 2018 and 2017 is as follows: As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Projected benefit obligation $ 45,169 $ 65,691 $ 48,615 $ 31,680 Accumulated benefit obligation $ 45,169 $ 59,948 $ 48,615 $ 26,609 Plan assets $ 39,875 $ 39,868 $ 41,101 $ 5,759 Information for plans with a projected benefit obligation in excess of plan assets as of December 31, 2018 and 2017 is as follows: As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Projected benefit obligation $ 51,186 $ 65,691 $ 58,307 $ 63,153 Plan assets $ 39,875 $ 39,868 $ 41,101 $ 36,990 Other changes in plan assets and benefit obligations, net of tax, recognized in other comprehensive income/(loss) for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Net loss/(gain) $ 2,002 $ (124 ) $ 3,669 $ 2,768 $ (197 ) $ 1,618 $ 5,368 $ (984 ) $ 2,505 Amortization of net loss (1,080 ) (5 ) (298 ) (1,149 ) (54 ) (130 ) (707 ) (143 ) (436 ) Amortization of net prior service credit/(cost) — 1,728 (4 ) — 1,335 3 — 1,335 15 Divestiture — — (228 ) — — — — — — Plan amendment — (3,243 ) — — — (5 ) — — (73 ) Settlement effect (1,047 ) — (1,023 ) (3,225 ) — (69 ) (1,293 ) — (67 ) Curtailment effect — — 30 — — — — — (1,272 ) Total in other comprehensive (income)/loss $ (125 ) $ (1,644 ) $ 2,146 $ (1,606 ) $ 1,084 $ 1,417 $ 3,368 $ 208 $ 672 Assumptions and Investment Policies Weighted-average assumptions used to calculate the projected benefit obligations of our defined benefit and retiree healthcare benefit plans as of December 31, 2018 and 2017 are as follows: As of December 31, 2018 2017 Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare U.S. assumed discount rate 3.79 % 3.90 % 3.00 % 3.10 % Non-U.S. assumed discount rate 2.17 % NA 2.07 % NA Non-U.S. average long-term pay progression 2.66 % NA 2.66 % NA Weighted-average assumptions used to calculate the net periodic benefit cost of our defined benefit and retiree healthcare benefit plans for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare U.S. assumed discount rate 3.45 % 3.10 % 3.20 % 3.30 % 3.10 % 3.50 % Non-U.S. assumed discount rate 5.87 % NA 3.90 % NA 3.83 % NA U.S. average long-term rate of return on plan assets 4.57 % NA 4.50 % NA 5.00 % NA Non-U.S. average long-term rate of return on plan assets 2.26 % NA 2.29 % NA 2.60 % NA Non-U.S. average long-term pay progression 4.82 % NA 3.75 % NA 3.78 % NA Assumed healthcare cost trend rates for the U.S. retiree healthcare benefit plan as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, 2018 2017 2016 Assumed healthcare trend rate for next year: Attributed to less than age 65 6.60 % 6.90 % 7.10 % Attributed to age 65 or greater 7.10 % 7.50 % 7.80 % Ultimate trend rate 4.50 % 4.50 % 4.50 % Year in which ultimate trend rate is reached: Attributed to less than age 65 2038 2038 2038 Attributed to age 65 or greater 2038 2038 2038 Assumed healthcare trend rates could have a significant effect on the amounts reported for retiree healthcare plans. A one percentage point change in the assumed healthcare trend rates for the year ended December 31, 2018 would have the following effect: One Percentage Point: Increase Decrease Effect on total service and interest cost components $ 6 $ (5 ) Effect on post-retirement benefit obligations $ 200 $ (248 ) The table below outlines the benefits expected to be paid to participants in each of the following years, taking into consideration expected future service, as appropriate. The majority of the payments will be paid from plan assets and not company assets. Expected Benefit Payments For the year ended December 31, U.S. Defined Benefit U.S. Retiree Healthcare Non-U.S. Defined Benefit 2019 $ 6,466 $ 1,116 $ 2,959 2020 $ 5,826 $ 738 $ 3,232 2021 $ 5,313 $ 696 $ 3,228 2022 $ 4,128 $ 634 $ 3,829 2023 $ 3,677 $ 523 $ 3,528 2024 - 2027 $ 10,498 $ 1,905 $ 21,700 Plan Assets We hold assets for our defined benefit plans in the U.S., Japan, the Netherlands, and Belgium. Information about the assets for each of these plans is detailed below. Refer to Note 18, "Fair Value Measures," for descriptions of the levels of the fair value hierarchy in accordance with FASB ASC Topic 820. U.S. Plan Assets Our target asset allocation for the U.S. defined benefit plan is 83% fixed income and 17% equity securities. To arrive at the targeted asset allocation, we and our investment adviser reviewed market opportunities using historical data, as well as the actuarial valuation for the plan, to ensure that the levels of acceptable return and risk are well-defined and monitored. The following table presents information about the plan’s target and actual asset allocation, as of December 31, 2018 : Target Allocation Actual Allocation as of December 31, 2018 U.S. large cap equity 7 % 7 % U.S. small / mid cap equity 2 % 2 % Globally managed volatility fund 3 % 3 % International (non-U.S.) equity 4 % 4 % Fixed income (U.S. investment and non-investment grade) 68 % 67 % High-yield fixed income 2 % 2 % International (non-U.S.) fixed income 1 % 1 % Money market funds 13 % 13 % The portfolio is monitored for automatic rebalancing on a monthly basis. The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total U.S. large cap equity $ 2,960 $ — $ — $ 2,960 $ 3,288 $ — $ — $ 3,288 U.S. small / mid cap equity 833 — — 833 942 — — 942 Global managed volatility fund 1,214 — — 1,214 1,288 — — 1,288 International (non-U.S.) equity 1,493 — — 1,493 1,788 — — 1,788 Total equity mutual funds 6,500 — — 6,500 7,306 — — 7,306 Fixed income (U.S. investment grade) 26,884 — — 26,884 27,507 — — 27,507 High-yield fixed income 792 — — 792 821 — — 821 International (non-U.S.) fixed income 402 — — 402 398 — — 398 Total fixed income mutual funds 28,078 — — 28,078 28,726 — — 28,726 Money market funds 5,297 — — 5,297 5,069 — — 5,069 Total plan assets $ 39,875 $ — $ — $ 39,875 $ 41,101 $ — $ — $ 41,101 Investments in mutual funds are based on the publicly-quoted final net asset values on the last business day of the year. Permitted asset classes include U.S. and non-U.S. equity, U.S. and non-U.S. fixed income, cash, and cash equivalents. Fixed income includes both investment grade and non-investment grade. Permitted investment vehicles include mutual funds, individual securities, derivatives, and long-duration fixed income securities. While investments in individual securities, derivatives, long-duration fixed income securities, cash, and cash equivalents are permitted, the plan did not hold these types of investments as of December 31, 2018 or 2017 . Prohibited investments include direct investments in real estate, commodities, unregistered securities, uncovered options, currency exchange contracts, and natural resources (such as timber, oil, and gas). Japan Plan Assets The target asset allocation of the Japan defined benefit plan is 50% equity securities and 50% fixed income securities, cash, and cash equivalents, with allowance for a 40% deviation in either direction. We, along with the trustee of the plan's assets, minimize investment risk by thoroughly assessing potential investments based on indicators of historical returns and current credit ratings. Additionally, investments are diversified by type and geography. The following table presents information about the plan’s target asset allocation, as well as the actual allocation, as of December 31, 2018 : Target Allocation Actual Allocation as of December 31, 2018 Equity securities 10%-90% 25 % Fixed income securities, cash, and cash equivalents 10%-90% 75 % The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total U.S. equity $ 2,212 $ — $ — $ 2,212 $ 2,461 $ — $ — $ 2,461 International (non-U.S.) equity 5,158 — — 5,158 6,567 — — 6,567 Total equity securities 7,370 — — 7,370 9,028 — — 9,028 U.S. fixed income 3,076 269 — 3,345 2,968 268 — 3,236 International (non-U.S.) fixed income 8,811 — — 8,811 11,046 — — 11,046 Total fixed income securities 11,887 269 — 12,156 14,014 268 — 14,282 Cash and cash equivalents 10,339 — — 10,339 7,921 — — 7,921 Total plan assets $ 29,596 $ 269 $ — $ 29,865 $ 30,963 $ 268 $ — $ 31,231 The fair values of equity and fixed income securities are based on publicly-quoted closing stock and bond values on the last business day of the year. Permitted asset classes include equity securities that are traded on the official stock exchange(s) of the respective countries, fixed income securities with certain credit ratings, cash, and cash equivalents. The Netherlands Plan Assets The assets of the Netherlands defined benefit plan are insurance policies. The contributions we make to the plan are used to purchase insurance policies that provide for specific benefit payments to plan participants. The benefit formula is determined independently by us. Upon retirement of an individual plan participant, the insurance contracts purchased are converted to provide specific benefits for the participant. The contributions paid by us are commingled with contributions paid to the insurance provider by other employers for investment purposes and to reduce plan administration costs. However, this defined benefit plan is not considered a multi-employer plan. The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Insurance policies $ — $ — $ 8,897 $ 8,897 $ — $ — $ 9,059 $ 9,059 Total plan assets $ — $ — $ 8,897 $ 8,897 $ — $ — $ 9,059 $ 9,059 The following table presents a rollforward of the Level 3 assets in our Netherlands' defined plan for the years ended December 31, 2018 and 2017 : Insurance Policies Balance as of December 31, 2016 $ 8,014 Actual return on plan assets still held at reporting date (597 ) Purchases, sales, settlements, and exchange rate changes 1,642 Balance as of December 31, 2017 9,059 Actual return on plan assets still held at reporting date 177 Purchases, sales, settlements, and exchange rate changes (339 ) Balance as of December 31, 2018 $ 8,897 The fair values of the insurance contracts are measured based on the future benefit payments that would be made by the insurance company to vested plan participants if we were to switch to another insurance company without actually surrendering our policy. In this case, the insurance company would guarantee to pay the vested benefits at retirement accrued under the plan based on current salaries and service to date (i.e., with no allowance for future salary increases or pension increases). The cash flows of the future benefit payments are discounted using the same discount rate that is applied to value the related defined benefit plan liability. Belgium Plan Assets The assets of the Belgium defined benefit plan are insurance policies. As of December 31, 2018 and 2017 the fair values of these assets were $1.1 million and $0.9 million , respectively. These fair value measurements are categorized in level 3 of the fair value hierarchy.

Debt

Debt	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt	Debt Long-term debt, net and capital lease and other financing obligations as of December 31, 2018 and 2017 consisted of the following: As of December 31, Maturity Date 2018 2017 Term Loan October 14, 2021 $ 917,794 $ 927,794 4.875% Senior Notes October 15, 2023 500,000 500,000 5.625% Senior Notes November 1, 2024 400,000 400,000 5.0% Senior Notes October 1, 2025 700,000 700,000 6.25% Senior Notes February 15, 2026 750,000 750,000 Less: discount (15,169 ) (14,424 ) Less: deferred financing costs (23,159 ) (27,758 ) Less: current portion (9,704 ) (9,802 ) Long-term debt, net $ 3,219,762 $ 3,225,810 Capital lease and other financing obligations $ 35,475 $ 34,657 Less: current portion (4,857 ) (5,918 ) Capital lease and other financing obligations, less current portion $ 30,618 $ 28,739 Senior Secured Credit Facilities In May 2011, we completed a series of transactions designed to refinance our then existing indebtedness. These transactions included the execution of a credit agreement (as amended, the "Credit Agreement"), which provided for senior secured credit facilities (the "Senior Secured Credit Facilities") consisting of a term loan facility, a revolving credit facility, and incremental availability under which additional secured credit facilities could be issued under certain circumstances. Currently outstanding under the Senior Secured Credit Facilities are a term loan facility (the "Term Loan"), a $420.0 million revolving credit facility (the "Revolving Credit Facility"), and $1.0 billion incremental availability (the "Accordion") under which, subject to certain limitations as defined in the indentures (the "Senior Notes Indentures") under which the Senior Notes (as defined below) were issued, additional secured debt may be issued or the capacity of the Revolving Credit Facility may be increased. All obligations under the Senior Secured Credit Facilities are unconditionally guaranteed by certain of our subsidiaries (the "Guarantors") and collateralized by substantially all present and future property and assets of Sensata Technologies B.V. ("STBV"), Sensata Technologies Finance Company, LLC, and the Guarantors. The Credit Agreement stipulates certain events and conditions that may require us to use excess cash flow, as defined in the Credit Agreement, generated by operating, investing, or financing activities, to prepay some or all of the outstanding borrowings under the Senior Secured Credit Facilities. The Credit Agreement also requires mandatory prepayments of the outstanding borrowings under the Senior Secured Credit Facilities upon certain asset dispositions and casualty events, in each case subject to certain reinvestment rights, and the incurrence of certain indebtedness (excluding any permitted indebtedness). These provisions were not triggered during the year ended December 31, 2018 . Term Loan On November 7, 2017, we entered into the eighth amendment of the Credit Agreement, which resulted in a "Repricing Transaction" as that term is defined in the Credit Agreement. As a result, the Term Loan replaced the term loan provided under the sixth amendment of the Credit Agreement (the "Sixth Amendment"). Pursuant to the Eighth Amendment, changes from the previously issued term loan included the following: (i) the applicable interest rate margins were reduced as discussed below; (ii) the senior secured net leverage ratio threshold that triggers the excess cash flow mandatory prepayment requirement was increased; (iii) the Accordion was re-set to $1.0 billion as of the effective date of the Eighth Amendment; (iv) various baskets, permissions and other provisions under certain of the affirmative and negative covenants were increased or otherwise amended for our benefit; and (v) certain other changes were made to the Credit Agreement that are not considered material. The Term Loan retains all other provisions of the Sixth Amendment, including original principal amount and maturity, amongst others. In accordance with the Credit Agreement, the Term Loan may, at our option, be maintained from time to time as a Base Rate loan or a Eurodollar Rate loan (each as defined in the Credit Agreement), with each representing a different determination of interest rates. The principal amount of the Term Loan amortizes in equal quarterly installments in an aggregate annual amount equal to 1.0% of the original principal amount of the term loan provided under the Sixth Amendment, with the balance due at maturity. The applicable margins for the Term Loan as of December 31, 2018 were 0.75% and 1.75% for Base Rate loans and Eurodollar Rate loans, respectively, (a decrease from 1.25% and 2.25% , respectively, pursuant to the Sixth Amendment) subject to floors of 1.00% and 0.00% for Base Rate loans and Eurodollar Rate loans, respectively (a decrease from 1.75% and 0.75% , respectively, pursuant to the Sixth Amendment). As of December 31, 2018 , we maintained the Term Loan as a Eurodollar Rate loan. Revolving Credit Facility At our option, the Revolving Credit Facility may be maintained from time to time as a Base Rate loan or a Eurodollar Rate loan, each with a different determination of interest rates. Interest rates and fees on the Revolving Credit Facility are as follows (each depending on the achievement of certain senior secured net leverage ratios) (i) the index rate spread for Eurodollar Rate loans is 1.75% or 1.50% ; (ii) the index rate spread for Base Rate loans is 0.75% or 0.50% ; and (iii) the letter of credit fees are 1.625% or 1.375% . We are required to pay to our revolving credit lenders, on a quarterly basis, a commitment fee on the unused portion of the Revolving Credit Facility. The commitment fee is subject to a pricing grid based on our leverage ratio. The spreads on the commitment fee currently range from 0.25% to 0.375% . As of December 31, 2018 , there was $416.1 million of availability under the Revolving Credit Facility, net of $3.9 million in letters of credit. Outstanding letters of credit are issued primarily for the benefit of certain operating activities. As of December 31, 2018 , no amounts had been drawn against these outstanding letters of credit. Availability under the Revolving Credit Facility may be borrowed, repaid, and re-borrowed to fund our working capital needs and for other general corporate purposes. Senior Notes At December 31, 2018 we had various tranches of senior notes outstanding, including $500.0 million aggregate principal amount of 4.875% senior notes due 2023 (the " 4.875% Senior Notes"), $400.0 million aggregate principal amount of 5.625% senior notes due 2024 (the " 5.625% Senior Notes"), $700.0 million aggregate principal amount of 5.0% senior notes due 2025 (the " 5.0% Senior Notes"), and $750.0 million aggregate principal amount of 6.25% senior notes due 2026 (the " 6.25% Senior Notes" and together with each tranche of senior notes outstanding, the "Senior Notes"). With the exception of the 6.25% Senior Notes, we may redeem the Senior Notes at any time, in whole or in part, at a redemption price equal to 100% of the principal amount of the Senior Notes redeemed plus accrued and unpaid interest, if any, to the date of redemption, plus the Applicable Premium (also known as the "make-whole premium") set forth in the Senior Notes Indentures. Upon the occurrence of certain change in control events, we will be required to make an offer to purchase the Senior Notes then outstanding at a purchase price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of repurchase. In addition, if certain changes in the law of any relevant taxing jurisdiction become effective that would impose withholding taxes or other deductions on the payments of the Senior Notes or the guarantees, we may redeem the Senior Notes in whole, but not in part, at any time, at a redemption price of 100% of the principal amount, plus accrued and unpaid interest, if any, and additional amounts, if any, to the date of redemption. The Senior Notes Indentures provide for events of default that include, among others, nonpayment of principal or interest when due, breach of covenants or other provisions in the Senior Notes Indentures, defaults in payment of certain other indebtedness, certain events of bankruptcy or insolvency, failure to pay certain judgments, and the cessation of the full force and effect of the guarantees of significant subsidiaries. Generally, if an event of default occurs, the trustee or the holders of at least 25% in principal amount of the then outstanding Senior Notes may declare the principal of, and accrued but unpaid interest on, all of the Senior Notes to be due and payable immediately. All provisions regarding remedies in an event of default are subject to the Senior Notes Indentures. Our obligations under the 4.875% Senior Notes, the 5.625% Senior Notes, and the 5.0% Senior Notes are guaranteed by all of STBV’s existing and future wholly-owned subsidiaries that guarantee our obligations under the Senior Secured Credit Facilities. The 4.875% Senior Notes, the 5.625% Senior Notes, and the 5.0% Senior Notes and the related guarantees are the senior unsecured obligations of STBV and the Guarantors, respectively and rank equally in right of payment to all existing and future senior unsecured indebtedness of STBV or the Guarantors. Our obligations under the 6.25% Senior Notes are guaranteed by STBV and all of STBV’s existing and future wholly-owned subsidiaries (other than Sensata Technologies UK Financing Co. plc ("STUK")) that guarantee our obligations under the Senior Secured Credit Facilities. The 6.25% Senior Notes and the related guarantees are the senior unsecured obligations of STUK and the Guarantors, respectively. The 6.25% Senior Notes and the guarantees rank equally in right of payment to all existing and future senior unsecured indebtedness of STUK, STBV, or the Guarantors. 4.875% Senior Notes In April 2013 we completed the issuance and sale of the 4.875% Senior Notes, which were issued under an indenture dated April 17, 2013 among STBV, as issuer, The Bank of New York Mellon, as trustee, and the Guarantors. The 4.875% Senior Notes were offered at par. Interest on the 4.875% Senior Notes is payable semi-annually on April 15 and October 15 of each year. 5.625% Senior Notes In October 2014 we completed the issuance and sale of the 5.625% Senior Notes, which were issued under an indenture dated October 14, 2014, among STBV, as issuer, The Bank of New York Mellon, as trustee, and the Guarantors. The 5.625% Senior Notes were offered at par. Interest on the 5.625% Senior Notes is payable semi-annually on May 1 and November 1 of each year. 5.0% Senior Notes In March 2015 we completed the issuance and sale of the 5.0% Senior Notes, which were issued under an indenture dated March 26, 2015, among STBV, as issuer, The Bank of New York Mellon, as trustee, and the Guarantors. The 5.0% Senior Notes were offered at par. Interest on the 5.0% Senior Notes is payable semi-annually on April 1 and October 1 of each year. 6.25% Senior Notes In November 2015, we completed the issuance and sale of the 6.25% Senior Notes, which were issued under an indenture dated November 27, 2015 (the " 6.25% Senior Notes Indenture") among STUK, as issuer, The Bank of New York Mellon, as trustee, and the Guarantors. The 6.25% Senior Notes were offered at par. Interest on the 6.25% Senior Notes is payable semi-annually on February 15 and August 15 of each year. We may redeem the 6.25% Senior Notes, in whole or in part, at any time prior to February 15, 2021, at a redemption price equal to 100% of the principal amount of the 6.25% Senior Notes redeemed plus accrued and unpaid interest to the date of redemption, if any, plus the Applicable Premium set forth in the 6.25% Senior Notes Indenture. Thereafter, we may redeem the 6.25% Senior Notes, in whole or in part, at the following prices (plus accrued and unpaid interest to the date of redemption, if any): Period beginning February 15, Price 2021 103.125% 2022 102.083% 2023 101.042% 2024 and thereafter 100.000% Restrictions and Covenants As of December 31, 2018 , all of the subsidiaries of STBV were subject to certain restrictive covenants. Under certain circumstances, STBV will be permitted to designate a subsidiary as "unrestricted," in which case the restrictive covenants will not apply to that subsidiary. STBV has not designated any subsidiaries as unrestricted. The net assets of STBV subject to these restrictions totaled $2,932.2 million at December 31, 2018 . Credit Agreement The Credit Agreement contains non-financial covenants (subject to important exceptions and qualifications set forth in the Credit Agreement) that limit our ability to: • incur indebtedness or liens, prepay subordinated debt, or amend the terms of our subordinated debt; • make loans and investments (including acquisitions), make capital expenditures, or sell assets; • change our business or accounting policies, merge, consolidate, dissolve or liquidate, or amend the terms of our organizational documents; • enter into affiliate transactions; • pay dividends and make other restricted payments; or • enter into certain burdensome contractual obligations. In addition, under the Credit Agreement, STBV and its subsidiaries are required to maintain a senior secured net leverage ratio not to exceed 5.0 : 1.0 under the following circumstances: • at the conclusion of certain periods when outstanding loans and letters of credit that are not cash collateralized for the full face amount thereof exceed 10% of the commitments under the Revolving Credit Facility; and • on a pro forma basis, in connection with any new borrowings (including any letter of credit issuances) under the Revolving Credit Facility as of the time of such borrowings. Senior Notes Indentures The Senior Notes Indentures contain restrictive covenants (subject to important exceptions and qualifications set forth in the Senior Notes Indentures) that limit the ability of STBV and its subsidiaries to, among other things: • incur additional indebtedness or liens, prepay subordinated indebtedness, or guarantee indebtedness; • make certain investments or certain other restricted payments or sell certain kinds of assets; • effect mergers or consolidations; • enter into certain types of transactions with affiliates; • pay dividends or make other distributions in respect of STBV's and its subsidiaries' capital stock; • create restrictions on STBV's subsidiaries' ability to make payments to STBV; • issue preferred stock; • redeem or repurchase STBV's capital stock, our capital stock, or the capital stock of any other direct or indirect parent company of STBV; or • designate unrestricted subsidiaries. Certain of these covenants will be suspended if the Senior Notes are assigned an investment grade rating by Standard & Poor's Rating Services or Moody's Investors Service, Inc. and provided no default has occurred and is continuing at such time. The suspended covenants will be reinstated if the Senior Notes are no longer assigned an investment grade rating by either rating agency and an event of default has occurred and is continuing at such time. As of December 31, 2018 , none of the Senior Notes were assigned an investment grade rating by either rating agency. Restrictions on Payment of Dividends The Guarantors are generally not restricted in their ability to pay dividends or otherwise distribute funds to STBV, except for restrictions imposed under applicable corporate law. STBV, however, is limited in its ability to pay dividends or otherwise make distributions to its immediate parent company and, ultimately, to Sensata plc, under the Credit Agreement and the Senior Notes Indentures. Specifically, the Credit Agreement prohibits STBV from paying dividends or making distributions to its parent companies except for purposes that include, but are not limited to, the following: • customary and reasonable operating expenses, legal and accounting fees and expenses, and overhead of such parent companies incurred in the ordinary course of business, provided that such amounts, in the aggregate, do not exceed $20.0 million in any fiscal year; • dividends and other distributions in an aggregate amount not to exceed $100.0 million plus certain amounts, including the retained portion of excess cash flow, but only insofar as no default or event of default exists and the senior secured net leverage ratio is less than 2.0 : 1.0 calculated on a pro forma basis; • dividends and other distributions in an aggregate amount not to exceed $50.0 million in any calendar year (subject to increase upon the achievement of certain ratios); and • dividends and other distributions in an aggregate amount not to exceed $150.0 million , so long as no default or event of default exists. The Senior Notes Indentures generally provide that STBV can pay dividends and make other distributions to its parent companies upon the achievement of certain conditions and in an amount as determined in accordance with the Senior Notes Indentures. Compliance with Financial and Non-Financial Covenants We were in compliance with all of the financial and non–financial covenants and default provisions associated with our indebtedness as of December 31, 2018 and for the fiscal year then ended. Accounting for Debt Financing Transactions Refer to Note 2, "Significant Accounting Policies," for discussion of our accounting policies regarding debt financing transactions. In connection with the Merger, we paid $5.8 million of creditor fees and related third-party costs in order to obtain consents to the transaction from our existing lenders. As a result, and based on application of the provisions in FASB ASC Subtopic 470-50, we recognized a $3.5 million adjustment to the carrying value of long-term debt, net and a $2.4 million loss in other, net. During the year ended December 31, 2017, as a result and based on application of the provisions of ASC Subtopic 470–50, Modifications and Extinguishments, we recognized a $0.2 million adjustment to the carrying value of long–term debt, net and a $2.7 million loss in other, net. Leases We occupy leased facilities with initial terms ranging up to 20 years . The lease agreements frequently include options to renew for additional periods or to purchase the leased assets and generally require that we pay taxes, insurance, and maintenance costs. Depending on the specific terms of the leases, our obligations are in two forms: capital leases and operating leases. Rent expense for the years ended December 31, 2018 , 2017 , and 2016 was $21.0 million , $19.7 million , and $18.1 million , respectively. We have material capital leases for facilities in Baoying, China and Attleboro, Massachusetts. As of December 31, 2018 and 2017 , the combined capital lease obligation outstanding for these facilities was $30.4 million and $26.2 million , respectively. The increase in the capital lease obligation relates to a renegotiation of the terms of our lease in Attleboro. Other Financing Obligations In 2013, we entered into an agreement with one of our suppliers, Measurement Specialties, Inc., under which we acquired the rights to certain intellectual property in exchange for fixed royalty payments, payable quarterly through the fourth quarter of 2019. As of December 31, 2018 and 2017 , we had recognized a liability related to this agreement of $1.8 million and $3.5 million , respectively. Debt Maturities The aggregate principal amount of each tranche of our Senior Notes is due in full at its maturity date. The Term Loan must be repaid in full on or prior to its final maturity date. Loans made pursuant to the Revolving Credit Facility must be repaid in full at its maturity date and can be repaid prior to then at par. All letters of credit issued thereunder will terminate at the final maturity of the Revolving Credit Facility unless cash collateralized prior to such time. The following table presents the remaining mandatory principal repayments of long-term debt, excluding capital lease payments, other financing obligations, and discretionary repurchases of debt, in each of the years ended December 31, 2019 through 2023 and thereafter. For the year ended December 31, Aggregate Maturities 2019 $ 9,704 2020 9,901 2021 898,189 2022 — 2023 500,000 Thereafter 1,850,000 Total long-term debt principal payments $ 3,267,794

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Future minimum payments for capital leases, other financing obligations, and non-cancelable operating leases in effect as of December 31, 2018 are as follows: Future Minimum Payments Capital Leases Other Financing Obligations Operating Leases Total For the year ending December 31, 2019 $ 4,672 $ 2,541 $ 16,621 $ 23,834 2020 4,540 459 12,319 17,318 2021 4,062 178 9,688 13,928 2022 3,712 — 7,707 11,419 2023 3,771 — 6,471 10,242 2024 and thereafter 36,327 — 26,580 62,907 Net minimum rentals 57,084 3,178 79,386 139,648 Less: interest portion (24,395 ) (392 ) — (24,787 ) Present value of future minimum rentals $ 32,689 $ 2,786 $ 79,386 $ 114,861 Non-cancelable purchase agreements exist with various suppliers, primarily for services such as information technology support. The terms of these agreements are fixed and determinable. As of December 31, 2018 , we had the following purchase commitments: Purchase Commitments For the year ending December 31, 2019 $ 23,983 2020 24,202 2021 18,525 2022 8,065 2023 4,952 2024 and thereafter 39 Total purchase commitments $ 79,766 Collaborative Arrangements On March 4, 2016, we entered into a strategic partnership agreement (the "SPA") with Quanergy to jointly develop, manufacture, and sell solid state Light Detection and Ranging ("LiDAR") sensors. Under the terms of the SPA, we are exclusive partners with Quanergy for component level solid state LiDAR sensors in the transportation end market. We are accounting for the SPA under the provisions of FASB ASC Topic 808, Collaborative Arrangements , under which the accounting for certain transactions is determined using principal versus agent considerations. Using the guidance in FASB ASC Topic 606, we have determined that we are the principal with respect to the SPA. During the years ended December 31, 2018, 2017, and 2016, there were no material amounts recorded to earnings related to the SPA. Off-Balance Sheet Commitments From time to time, we execute contracts that require us to indemnify the other parties to the contracts. These indemnification obligations generally arise in two contexts. First, in connection with certain transactions, such as the sale of a business or the issuance of debt or equity securities, the agreement typically contains standard provisions requiring us to indemnify the purchaser against breaches by us of representations and warranties contained in the agreement. These indemnities are generally subject to time and liability limitations. Second, we enter into agreements in the ordinary course of business, such as customer contracts, that might contain indemnification provisions relating to product quality, intellectual property infringement, governmental regulations and employment related matters, and other typical indemnities. In certain cases, indemnification obligations arise by law. We believe that our indemnification obligations are consistent with other companies in the markets in which we compete. Performance under any of these indemnification obligations would generally be triggered by a breach of the terms of the contract or by a third-party claim. Historically, we have experienced only immaterial and irregular losses associated with these indemnifications. Consequently, any future liabilities brought about by these indemnifications cannot reasonably be estimated or accrued. Indemnifications Provided As Part of Contracts and Agreements We are party to the following types of agreements pursuant to which we may be obligated to indemnify a third party with respect to certain matters. Officers and Directors: Our articles of association provide for indemnification of directors and officers by us to the fullest extent permitted by applicable law, as it now exists or may hereinafter be amended (but, in the case of an amendment, only to the extent such amendment permits broader indemnification rights than permitted prior thereto), against any and all liabilities, including all expenses (including attorneys’ fees), judgments, fines, and amounts paid in settlement actually and reasonably incurred by him or her in connection with such action, suit, or proceeding, provided he or she acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, our best interests, and, with respect to any criminal action or proceeding, had no reasonable cause to believe his or her conduct was unlawful or outside of his or her mandate. The articles do not provide a limit to the maximum future payments, if any, under the indemnification. No indemnification is provided for in respect of any claim, issue, or matter as to which such person has been adjudged to be liable for gross negligence or willful misconduct in the performance of his or her duty on our behalf. In addition, we have a liability insurance policy that insures directors and officers against the cost of defense, settlement, or payment of claims and judgments under some circumstances. Certain indemnification payments may not be covered under our directors’ and officers’ insurance coverage. Initial Purchasers of Senior Notes : Pursuant to the terms of the purchase agreements entered into in connection with our private placement senior note offerings, we are obligated to indemnify the initial purchasers of the Senior Notes against certain liabilities caused by any untrue statement or alleged untrue statement of a material fact in various documents relied upon by such initial purchasers, or to contribute to payments the initial purchasers may be required to make in respect thereof. The purchase agreements do not provide a limit to the maximum future payments, if any, under these indemnifications. Intellectual Property and Product Liability Indemnification: We routinely sell products with a limited intellectual property and product liability indemnification included in the terms of sale. Historically, we have had only immaterial and irregular losses associated with these indemnifications. Consequently, any future liabilities resulting from these indemnifications cannot reasonably be estimated or accrued. Product Warranty Liabilities Refer to Note 3, "Revenue Recognition," for a description of warranties we provide to customers. In the event a warranty claim based on defective materials exists, we may be able to recover some of the cost of the claim from the vendor from whom the materials were purchased. Our ability to recover some of the costs will depend on the terms and conditions to which we agreed when the materials were purchased. When a warranty claim is made, the only collateral available to us is the return of the inventory from the customer making the warranty claim. Historically, when customers make a warranty claim, we either replace the product or provide the customer with a credit. We generally do not rework the returned product. Our policy is to accrue for warranty claims when a loss is both probable and estimable. This is accomplished by accruing for estimated returns and estimated costs to replace the product at the time the related revenue is recognized. Liabilities for warranty claims have historically not been material. In some instances, customers may make claims for costs they incurred or other damages related to a claim. Environmental Remediation Liabilities Our operations and facilities are subject to U.S. and non-U.S. laws and regulations governing the protection of the environment and our employees, including those governing air emissions, water discharges, the management and disposal of hazardous substances and wastes, and the cleanup of contaminated sites. We could incur substantial costs, including cleanup costs, fines, civil or criminal sanctions, or third-party property damage or personal injury claims, in the event of violations or liabilities under these laws and regulations, or non-compliance with the environmental permits required at our facilities. Potentially significant expenditures could be required in order to comply with environmental laws that may be adopted or imposed in the future. We are, however, not aware of any threatened or pending material environmental investigations, lawsuits, or claims involving us or our operations. Legal Proceedings and Claims We are regularly involved in a number of claims and litigation matters in the ordinary course of business. Most of our litigation matters are third-party claims related to patent infringement allegations or for property damage allegedly caused by our products, but some involve allegations of personal injury or wrongful death. Although it is not feasible to predict the outcome of these matters, based upon our experience and current information known to us, we do not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on our results of operations, financial position, or cash flows. We account for litigation and claims losses in accordance with FASB ASC Topic 450, Contingencies . Under FASB ASC Topic 450, loss contingency provisions are recorded for probable and estimable losses at our best estimate of a loss or, when a best estimate cannot be made, at our estimate of the minimum loss. These estimates are often developed prior to knowing the amount of the ultimate loss, require the application of considerable judgment, and are refined each accounting period as additional information becomes known. Accordingly, we are often initially unable to develop a best estimate of loss and therefore the minimum amount, which could be an immaterial amount, is recorded. As information becomes known, either the minimum loss amount is increased, or a best estimate can be made, generally resulting in additional loss provisions. A best estimate amount may be changed to a lower amount when events result in an expectation of a more favorable outcome than previously expected. Pending Litigation and Claims: We are a defendant in a lawsuit, Wasica Finance Gmbh et al v. Schrader International Inc. et al, Case No. 13-1353-CPS, U.S.D.C., Delaware, in which the claimant alleges infringement of their patent (US 5,602,524) in connection with our tire pressure monitoring system products. The patent in question has expired, and as a result, the claimant only seeks damages for past infringement with interest and costs. Should the claimant prevail, these amounts could be material. We have denied liability and have been defending the litigation, which is in discovery. The court held a claims construction hearing on December 3, 2018 and is expected to issue a ruling in February 2019. Trial is currently expected in February 2020. We do not believe a loss related to this matter is probable. As of December 31, 2018, we have not recorded an accrual related to this matter. We are a defendant in a lawsuit, Metal Seal Precision, Ltd. v. Sensata Technologies Inc., Case No. 2017-0518-BCSI, MA Superior Court (Suffolk County) , in which the claimant ("Metal Seal"), a supplier of metal parts used in the manufacture of our products, alleges breach of contract, misrepresentation, and unfair trade practices under Massachusetts general laws. The dispute arises out of a long-term supply agreement under which Metal Seal alleges certain minimum purchase requirements were not met, resulting in lost profits and loss of future revenues. If the claimant prevails additionally under the unfair trade practices claims, it could obtain additional treble damages and attorney's fees. Plaintiff’s damage expert claims that Metal Seal has losses ranging up to $51.0 million . We are defending the lawsuit, which is currently scheduled for trial on March 11, 2019 through March 19, 2019. We do not believe a loss related to this matter is probable. As of December 31, 2018, we have not recorded an accrual related to this matter.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity Prior to the Merger, Sensata N.V.’s articles of association authorized it to issue up to 400.0 million ordinary shares. However, entities incorporated under the laws of England and Wales are limited in the number of shares they can issue to those shares that have been authorized for "allotment" by their shareholders. In connection with the Merger, our Board of Directors asked shareholders to approve an allotment of ordinary shares equal to the total ordinary shares then issued and outstanding plus the maximum number of ordinary shares that could be reasonably expected to be issued under our equity plans within the next year, which resulted in an allotment of 177.1 million ordinary shares. Treasury Shares Ordinary shares repurchased by us are recognized, measured at cost, and presented as treasury shares on our consolidated balance sheets, resulting in a reduction of shareholders' equity. In connection with the Merger, all then outstanding treasury shares were canceled in accordance with U.K. law. Accordingly, we (1) derecognized the total purchase price of these treasury shares, (2) recognized a reduction to ordinary shares at an amount equal to the total par value of such shares, and (3) recognized a reduction to retained earnings at an amount equal to the excess of the total repurchase price over the total par value of the then outstanding treasury shares, or $286.1 million . Also, upon completion of the Merger, the $250.0 million share repurchase program previously authorized by the Board of Directors of Sensata N.V. lapsed, and our ability to repurchase shares as a company incorporated in England and Wales became contingent upon the completion of certain court proceedings in the U.K. (which were completed in the second quarter of 2018), approval of our shareholders (which occurred at our May 31, 2018 annual general meeting of shareholders), and authorization by our Board of Directors. On May 31, 2018, we announced that our Board of Directors had authorized a $400.0 million share repurchase program. Under this program, we may repurchase ordinary shares at such times and in amounts to be determined by our management, based on market conditions, legal requirements, and other corporate considerations, on the open market or in privately negotiated transactions, provided that such transactions were completed pursuant to an agreement and with a third party approved by our shareholders at the annual general meeting. The authorized amount of our share repurchase program could be modified or terminated by our Board of Directors at any time. We repurchased 7,571 ordinary shares under this program during the year ended December 31, 2018, for a total purchase price of approximately $399.4 million , which are now held as treasury shares. In October 2018, our Board of Directors authorized a new $250.0 million share repurchase program, subject to the same conditions that applied to the previously authorized $400.0 million share repurchase program. We did not make any repurchases under this program during fiscal year 2018. As a result of certain aspects of U.K. law, we discontinued the practice of reissuing treasury shares as part of our share-based compensation programs upon completion of the Merger. The number of treasury shares reissued prior to completion of the Merger was not material. Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss were as follows: Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Accumulated Other Comprehensive Loss Balance as of December 31, 2015 $ 3,852 $ (29,842 ) $ (25,990 ) Pre-tax current period change (5,106 ) (4,934 ) (10,040 ) Tax effect 1,277 686 1,963 Balance as of December 31, 2016 23 (34,090 ) (34,067 ) Pre-tax current period change (37,603 ) (1,445 ) (39,048 ) Tax effect 9,401 550 9,951 Balance as of December 31, 2017 (28,179 ) (34,985 ) (63,164 ) Pre-tax current period change 49,817 (1,183 ) 48,634 Tax effect (12,454 ) 806 (11,648 ) Balance as of December 31, 2018 $ 9,184 $ (35,362 ) $ (26,178 ) The details of the components of other comprehensive income/(loss), net of tax, for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Other comprehensive income/(loss) before reclassifications $ 26,859 $ (2,120 ) $ 24,739 $ (39,387 ) $ (4,184 ) $ (43,571 ) $ (6,356 ) $ (6,816 ) $ (13,172 ) Amounts reclassified from accumulated other comprehensive loss 10,504 1,743 12,247 11,185 3,289 14,474 2,527 2,568 5,095 Other comprehensive income/(loss) $ 37,363 $ (377 ) $ 36,986 $ (28,202 ) $ (895 ) $ (29,097 ) $ (3,829 ) $ (4,248 ) $ (8,077 ) The details of the amounts reclassified from accumulated other comprehensive loss for the years ended December 31, 2018 , 2017 , and 2016 are as follows: Amount of Loss/(Gain) Reclassified from Accumulated Other Comprehensive Loss For the year ended December 31, Affected Line in Consolidated Statements of Operations 2018 2017 2016 Derivative instruments designated and qualifying as cash flow hedges: Foreign currency forward contracts $ 18,072 $ 916 $ (17,720 ) Net revenue (1) Foreign currency forward contracts (5,442 ) 13,997 21,089 Cost of revenue (1) Foreign currency forward contracts 1,376 — — Other, net (1) Total, before taxes 14,006 14,913 3,369 Income before taxes Income tax effect (3,502 ) (3,728 ) (842 ) (Benefit from)/provision for income taxes Total, net of taxes $ 10,504 $ 11,185 $ 2,527 Net income Defined benefit and retiree healthcare plans $ 1,993 $ 3,476 $ 2,975 Other, net (2) Defined benefit and retiree healthcare plans 228 — — Restructuring and other charges, net (3) Total, before taxes 2,221 3,476 2,975 Income before taxes Income tax effect (478 ) (187 ) (407 ) (Benefit from)/provision for income taxes Total, net of taxes $ 1,743 $ 3,289 $ 2,568 Net income __________________________________________ (1) See Note 19, "Derivative Instruments and Hedging Activities," for details on amounts to be reclassified in the future from accumulated other comprehensive loss. (2) See Note 13, "Pension and Other Post-Retirement Benefits," for details of net periodic benefit cost. (3) Amount represents an equity component of the Valves Business. Refer to Note 5, "Restructuring and Other Charges, Net," and Note 17, "Acquisitions and Divestitures," for information related to the sale of the Valves Business.

Acquisitions and Divestitures

Acquisitions and Divestitures	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures GIGAVAC merger On September 24, 2018, we entered into an agreement and plan of merger with GIGAVAC, whereby GIGAVAC would merge with one of our wholly-owned subsidiaries, thereby becoming a wholly-owned subsidiary of Sensata. On October 31, 2018, we completed the acquisition of GIGAVAC for $233.0 million of cash consideration, subject to working capital and other adjustments, approximately $12.0 million of which related to certain compensation arrangements with certain GIGAVAC employees and shareholders. Based in Carpinteria, California, GIGAVAC has more than 270 employees and is a leading provider of solutions that enable electrification in demanding environments within the automotive, battery storage, industrial, and HVOR end markets. We acquired GIGAVAC to increase our content and capabilities for electrification, including products such as cars, delivery trucks, buses, material handling equipment, and charging stations. Portions of GIGAVAC will be integrated into each of our operating segments. The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed: Net working capital, excluding cash $ 16,980 Property, plant and equipment 4,384 Goodwill 114,638 Other intangible assets 122,742 Other assets 63 Deferred income tax liabilities (27,000 ) Other long-term liabilities (1,000 ) Fair value of net assets acquired, excluding cash and cash equivalents 230,807 Cash and cash equivalents 359 Fair value of net assets acquired $ 231,166 The allocation of purchase price related to the GIGAVAC Merger is preliminary, and is based on management’s judgments after evaluating several factors, including preliminary valuation assessments of tangible and intangible assets. The final allocation of the purchase price to the assets acquired will be completed when the final valuations are completed. The preliminary goodwill recognized as a result of this acquisition was approximately $114.6 million , which represents future economic benefits expected to arise from synergies from combining operations and the extension of existing customer relationships. The amount of goodwill recorded that is expected to be deductible for tax purposes is not material. In connection with the allocation of purchase price to the assets acquired and liabilities assumed, we identified certain definite-lived intangible assets. The following table presents the acquired intangible assets, their estimated fair values, and weighted average lives: Acquisition Date Fair Value Weighted-Average Lives (years) Acquired definite-lived intangible assets: Customer relationships $ 74,500 10 Completed technologies 31,040 13 Tradenames 15,400 15 Other 1,802 6 Total definite-lived intangible assets acquired $ 122,742 12 The definite-lived intangible assets were valued using the income approach. We used the relief-from-royalty method to value completed technologies and tradenames, and we used the multi-period excess earnings method to value customer relationships. These valuation methods incorporate assumptions including expected discounted future cash flows resulting from either the future estimated after-tax royalty payments avoided as a result of owning the completed technologies or the future earnings related to existing customer relationships. Valves Business Divestiture On August 31, 2018 we completed the sale of the Valves Business to Pacific Industrial Co. Ltd. (together with its affiliates, "Pacific"). Contemporaneous with the closing of the sale, Sensata and Pacific entered into a long-term supply agreement, which imposes an obligation on us to purchase minimum quantities of product from Pacific over a period of nearly five years. In exchange for selling the Valves Business and entering into the long-term supply agreement, we received cash consideration from Pacific of approximately $165.5 million , net of $11.8 million of cash and cash equivalents sold. We recognized a (pre-tax) gain on sale of $64.4 million , which is presented in restructuring and other charges, net. In addition, we recognized $5.9 million of costs to sell the Valves Business, which are also presented in restructuring and other charges, net. Refer to Note 5, "Restructuring and Other Charges, Net," for additional information. We determined that the terms of the long-term supply agreement entered into concurrent with the sale of the Valves Business were not at market. Accordingly, we recognized a liability of $16.4 million , measured at fair value, which represented the fair value of the off-market component of the supply agreement. The Valves Business, which we acquired in 2014 as part of our acquisition of Schrader, manufactures mechanical valves for pressure applications in tires and fluid controls and assembles tire hardware aftermarket products. The Valves Business has manufacturing locations in the U.S. and Europe. The Valves Business was included in our Performance Sensing segment (and reporting unit). We allocated goodwill to the Valves Business based on its fair value relative to the fair value of the retained Performance Sensing reporting unit.

Fair Value Measures

Fair Value Measures	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measures	Fair Value Measures Our assets and liabilities recorded at fair value have been categorized based upon a fair value hierarchy in accordance with FASB ASC Topic 820. The levels of the fair value hierarchy are described below: • Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets and liabilities that we have the ability to access at the measurement date. • Level 2 inputs utilize inputs, other than quoted prices included in Level 1, that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets and liabilities in active markets, quoted prices in markets that are not active, and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals. • Level 3 inputs are unobservable inputs for the asset or liability, allowing for situations where there is little, if any, market activity for the asset or liability. Measured on a Recurring Basis The fair values of our assets and liabilities measured at fair value on a recurring basis as of as of December 31, 2018 and 2017 are as shown in the below table. All fair value measures presented are categorized in Level 2 of the fair value hierarchy. As of December 31, 2018 2017 Assets measured at fair value: Foreign currency forward contracts $ 17,871 $ 3,955 Commodity forward contracts 831 6,458 Total assets measured at fair value $ 18,702 $ 10,413 Liabilities measured at fair value: Foreign currency forward contracts $ 5,165 $ 40,969 Commodity forward contracts 4,137 1,104 Total liabilities measured at fair value $ 9,302 $ 42,073 Refer to Note 2, "Significant Accounting Policies," for a discussion of the methods used to estimate the fair value of our financial instruments, and refer Note 19, "Derivative Instruments and Hedging Activities," for further discussion of the inputs used to determine these fair value measurements and the nature of the risks that these derivative instruments are intended to mitigate. Although we have determined that the majority of the inputs used to value our derivative instruments fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to appropriately reflect both our own non-performance risk and the respective counterparties' non-performance risk in the fair value measurement. As of December 31, 2018 and 2017 , we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivatives in their entirety are classified in Level 2 in the fair value hierarchy. Measured on a Nonrecurring Basis In connection with the sale of the Valves Business, as required by FASB ASC Topic 350, we evaluated the goodwill of the retained portion of the Performance Sensing reporting unit for impairment and determined that it was not impaired. In addition, we evaluated our goodwill for impairment as of October 1, 2018 using a combination of qualitative and quantitative methods. Refer to Note 2, "Significant Accounting Policies," for further discussion of this process. Based on these analyses, we determined that their fair values exceeded their carrying values at that date. As of October 1, 2018 , we evaluated our other indefinite-lived intangible assets for impairment (using the quantitative method) and determined that the fair values of those assets exceeded their carrying values on that date. The fair values of our other indefinite-lived intangible assets are considered Level 3 fair value measurements. As of December 31, 2018 , no events or changes in circumstances occurred that would have triggered the need for an additional impairment review of goodwill or other indefinite-lived intangible assets. On January 1, 2018, we adopted FASB ASU No. 2016-01, which requires measurement of certain equity instruments at fair value, with changes to fair value recognized in net income, or in certain instances, by use of a measurement alternative. Refer to Note 2, "Significant Accounting Policies," for detailed discussion of this guidance. As of December 31, 2018 , our only equity investment is the Series B Preferred Stock of Quanergy, for which we elected to use the measurement alternative. There was no change to the $50.0 million carrying value of this investment as a result of application of the measurement alternative. Financial Instruments Not Measured at Fair Value The following table presents the carrying values and fair values of financial instruments not measured at fair value in the consolidated balance sheets as of December 31, 2018 and 2017 . All fair value measures presented are categorized within Level 2 of the fair value hierarchy. As of December 31, 2018 2017 Carrying Value (1) Fair Value Carrying Value (1) Fair Value Term Loan $ 917,794 $ 904,027 $ 927,794 $ 930,114 4.875% Senior Notes $ 500,000 $ 491,875 $ 500,000 $ 521,875 5.625% Senior Notes $ 400,000 $ 400,500 $ 400,000 $ 439,000 5.0% Senior Notes $ 700,000 $ 660,625 $ 700,000 $ 741,125 6.25% Senior Notes $ 750,000 $ 751,875 $ 750,000 $ 813,750 __________________________________________ (1) Excluding any related debt discounts and deferred financing costs. The fair values of the Term Loan and the Senior Notes are determined primarily using observable prices in markets where these instruments are generally not traded on a daily basis. Cash and cash equivalents, accounts receivable, and accounts payable are carried at cost, which approximates fair value because of their short-term nature.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities We utilize derivative instruments that are designated and qualify as hedges of the exposure to variability in expected future cash flows. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on these hedging instruments with the earnings effect of the hedged forecasted transactions. We may enter into other derivative contracts that are intended to economically hedge certain risks, even though we elect not to apply hedge accounting under FASB ASC Topic 815. Derivative financial instruments not designated as hedges are used to manage our exposure to certain risks, not for trading or speculative purposes. Refer to Note 2, "Significant Accounting Policies," for detailed discussion of the valuation techniques and accounting policies related to derivative instruments and hedging activities. The effective portion of changes in the fair value of derivatives designated and qualifying as cash flow hedges is recorded in accumulated other comprehensive loss and is subsequently reclassified into earnings in the period in which the hedged forecasted transaction affects earnings. The ineffective portion of such derivatives’ change in fair value is immediately recognized in earnings. Changes in the fair value of contracts that are not designated as accounting hedges are recognized immediately in other, net. Refer to Note 16, "Shareholders' Equity," and elsewhere in this Note 19, for more details on the reclassification of amounts from accumulated other comprehensive loss into earnings. Hedges of Foreign Currency Risk We are exposed to fluctuations in various foreign currencies against our functional currency, the U.S. dollar (the "USD"). We enter into forward contracts for certain of these foreign currencies to manage this exposure. We currently have outstanding foreign currency forward contracts that qualify as cash flow hedges intended to offset the effect of exchange rate fluctuations on forecasted sales and certain manufacturing costs. We also have outstanding foreign currency forward contracts that are intended to preserve the economic value of foreign currency denominated monetary assets and liabilities, which are not designated for hedge accounting treatment in accordance with FASB ASC Topic 815. For each of the years ended December 31, 2018 , 2017 , and 2016 , amounts excluded from the assessment of effectiveness and the ineffective portion of the changes in the fair value of our foreign currency forward agreements that are designated as cash flow hedges were not material. As of December 31, 2018 , we estimate that $11.4 million in net gains will be reclassified from accumulated other comprehensive loss to earnings during the twelve month period ending December 31, 2019 . As of December 31, 2018 , we had the following outstanding foreign currency forward contracts: Notional Effective Date Maturity Date Index Weighted- Average Strike Rate Hedge Designation (1) 44.0 EUR December 27, 2018 January 31, 2019 Euro to U.S. Dollar Exchange Rate 1.14 USD None 341.5 EUR Various from February 2017 to December 2018 Various from January 2019 to November 2020 Euro to U.S. Dollar Exchange Rate 1.22 USD Cash flow hedge 285.0 CNY December 26, 2018 January 31, 2019 U.S. Dollar to Chinese Renminbi Exchange Rate 6.91 CNY None 31,275.0 KRW Various from February 2017 to December 2018 Various from January 2019 to November 2020 U.S. Dollar to Korean Won Exchange Rate 1,093.49 KRW Cash flow hedge 26.8 MYR December 26, 2018 January 31, 2019 U.S. Dollar to Malaysian Ringgit Exchange Rate 4.18 MYR None 195.0 MXN December 27, 2018 January 31, 2019 U.S. Dollar to Mexican Peso Exchange Rate 19.86 MXN None 2,713.2 MXN Various from February 2017 to December 2018 Various from January 2019 to November 2020 U.S. Dollar to Mexican Peso Exchange Rate 20.72 MXN Cash flow hedge 48.5 GBP Various from February 2017 to December 2018 Various from January 2019 to November 2020 British Pound Sterling to U.S. Dollar Exchange Rate 1.34 USD Cash flow hedge ______________________________________ (1) Derivative financial instruments not designated as hedges are used to manage our exposure to currency exchange rate risk. They are intended to preserve the economic value and not for trading or speculative purposes. Hedges of Commodity Risk We enter into commodity forward contracts in order to limit our exposure to variability in raw material costs that is caused by movements in the price of underlying metals. The terms of these forward contracts fix the price at a future date for various notional amounts associated with these commodities. These instruments are not designated for hedge accounting treatment in accordance with FASB ASC Topic 815. As of December 31, 2018 , we had the following outstanding commodity forward contracts, none of which were designated as derivatives in qualifying hedging relationships: Notional Remaining Contracted Periods Weighted-Average Strike Price Per Unit Silver 1,093,907 troy oz. January 2019 - November 2020 $ 16.42 Gold 9,859 troy oz. January 2019 - November 2020 $ 1,307.90 Nickel 287,681 pounds January 2019 - November 2020 $ 5.75 Aluminum 2,350,172 pounds January 2019 - November 2020 $ 0.97 Copper 2,904,061 pounds January 2019 - November 2020 $ 3.17 Platinum 9,095 troy oz. January 2019 - November 2020 $ 912.29 Palladium 1,001 troy oz. January 2019 - November 2020 $ 966.21 Financial Instrument Presentation The following table presents the fair values of our derivative financial instruments and their classification in the consolidated balance sheets as of December 31, 2018 and 2017 : Asset Derivatives Liability Derivatives Balance Sheet Location As of December 31, Balance Sheet Location As of December 31, 2018 2017 2018 2017 Derivatives designated as hedging instruments: Foreign currency forward contracts Prepaid expenses and other current assets $ 14,608 $ 3,576 Accrued expenses and other current liabilities $ 3,615 $ 32,806 Foreign currency forward contracts Other assets 3,168 373 Other long-term liabilities 1,134 6,881 Total $ 17,776 $ 3,949 $ 4,749 $ 39,687 Derivatives not designated as hedging instruments: Commodity forward contracts Prepaid expenses and other current assets $ 524 $ 5,403 Accrued expenses and other current liabilities $ 3,679 $ 1,006 Commodity forward contracts Other assets 307 1,055 Other long-term liabilities 458 98 Foreign currency forward contracts Prepaid expenses and other current assets 95 6 Accrued expenses and other current liabilities 416 1,282 Total $ 926 $ 6,464 $ 4,553 $ 2,386 These fair value measurements are all categorized within Level 2 of the fair value hierarchy. Refer to Note 18, "Fair Value Measures," for further discussion regarding the categorization of these fair value measurements within the fair value hierarchy. The following tables present the effect of our derivative financial instruments on the consolidated statements of operations and the consolidated statements of comprehensive income for the years ended December 31, 2018 and 2017 : Derivatives designated as hedging instruments Amount of Deferred Gain/(Loss) Recognized in Other Comprehensive Income/(Loss) Location of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income Amount of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income For the year ended December 31, For the year ended December 31, 2018 2017 2018 2017 Foreign currency forward contracts $ 30,752 $ (68,071 ) Net revenue $ (18,072 ) $ (916 ) Foreign currency forward contracts $ 5,059 $ 15,555 Cost of revenue $ 5,442 $ (13,997 ) Foreign currency forward contracts $ — $ — Other, net $ (1,376 ) $ — Derivatives not designated as hedging instruments Amount of (Loss)/Gain Recognized in Net Income Location of Gain/(Loss) For the year ended December 31, 2018 2017 Commodity forward contracts $ (8,481 ) $ 9,989 Other, net Foreign currency forward contracts $ 3,446 $ (15,618 ) Other, net Credit risk related contingent features We have agreements with certain of our derivative counterparties that contain a provision whereby if we default on our indebtedness, and where repayment of the indebtedness has been accelerated by the lender, then we could also be declared in default on our derivative obligations. As of December 31, 2018 , the termination value of outstanding derivatives in a liability position, excluding any adjustment for non-performance risk, was $9.4 million . As of December 31, 2018 , we have no t posted any cash collateral related to these agreements. If we breach any of the default provisions on any of our indebtedness as described above, we could be required to settle our obligations under the derivative agreements at their termination values.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We organize our business into two reportable segments, Performance Sensing and Sensing Solutions, each of which is also an operating segment. Our operating segments are businesses that we manage as components of an enterprise, for which separate financial information is evaluated regularly by our chief operating decision maker in deciding how to allocate resources and assess performance. An operating segment’s performance is primarily evaluated based on Segment profit, which excludes amortization of intangible assets, restructuring and other charges, net, and certain corporate costs/credits not associated with the operations of the segment, including share-based compensation expense and a portion of depreciation expense associated with assets recorded in connection with acquisitions. In addition, an operating segment’s performance excludes results from discontinued operations, if any. Corporate and other costs excluded from an operating segment’s performance are separately stated below and also include costs that are related to functional areas such as finance, information technology, legal, and human resources. We believe that Segment profit, as defined above, is an appropriate measure for evaluating the operating performance of our segments. However, this measure should be considered in addition to, and not as a substitute for, or superior to, profit from operations or other measures of financial performance prepared in accordance with U.S. GAAP. The accounting policies of each of our reportable segments are materially consistent with those described in Note 2, "Significant Accounting Policies." Performance Sensing is a developer and manufacturer of pressure sensors, speed and position sensors, and temperature sensors used in subsystems of automobiles (e.g., powertrain, air conditioning, tire pressure monitoring, and ride stabilization) and HVOR. These products help improve operating performance, for example, by making an automobile's heating and air conditioning systems work more efficiently, thereby improving gas mileage. These products are also used in systems that address environmental or safety concerns, for example, by reducing vehicle emissions or improving the stability control of the vehicle. Sensing Solutions is a developer and manufacturer of various control products used in industrial, aerospace, military, commercial, medical device, and residential end markets, and sensor products used in aerospace and industrial applications such as HVAC systems and military and commercial aircraft. These products include motor and compressor protectors, motor starters, temperature sensors and switches/thermostats, pressure sensors and switches, electronic HVAC sensors and controls, charge controllers, solid state relays, linear and rotary position sensors, circuit breakers, and semiconductor burn-in test sockets. These products help prevent damage from overheating and fires in a wide variety of applications, including commercial HVAC systems, refrigerators, aircraft, lighting, and other industrial applications, and help optimize performance by using sensors that provide feedback to control systems. Sensing Solutions also designs and manufactures direct current to alternating current power inverters, which enable the operation of electronic equipment when grid power is not available. The following table presents net revenue and Segment profit for the reported segments and other operating results not allocated to the reported segments for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Net revenue: Performance Sensing $ 2,627,651 $ 2,460,600 $ 2,385,380 Sensing Solutions 893,976 846,133 816,908 Total net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 Segment profit (as defined above): Performance Sensing $ 712,682 $ 664,186 $ 615,526 Sensing Solutions 293,009 277,450 261,914 Total segment profit 1,005,691 941,636 877,440 Corporate and other (203,764 ) (205,824 ) (179,473 ) Amortization of intangible assets (139,326 ) (161,050 ) (201,498 ) Restructuring and other charges, net 47,818 (18,975 ) (4,113 ) Profit from operations 710,419 555,787 492,356 Interest expense, net (153,679 ) (159,761 ) (165,818 ) Other, net (30,365 ) 6,415 (5,093 ) Income before taxes $ 526,375 $ 402,441 $ 321,445 No customer exceeded 10% of our net revenue in any of the periods presented. Prior to fiscal year 2018, we presented four significant product categories in Performance Sensing (pressure sensors, speed and position sensors, temperature sensors, and pressure switches), and five significant product categories in Sensing Solutions (bimetal electromechanical controls, industrial and aerospace sensors, power conversion and control, thermal and magnetic-hydraulic circuit breakers, and interconnection). Beginning in fiscal year 2018, we are categorizing our products more broadly, as sensors, controls, or other, to better reflect how we view our products. The following table presents net revenue by product category for the years ended December 31, 2018 , 2017 , and 2016 (prior periods have been recast to reflect current period presentation): Performance Sensing Sensing Solutions For the year ended December 31, 2018 2017 2016 Net revenue: Sensors X X $ 2,755,280 $ 2,542,863 $ 2,455,476 Controls X X 508,745 497,853 486,207 Other X X 257,602 266,017 260,605 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 The following table presents depreciation and amortization expense for our reportable segments for the years ended December 31, 2018 , 2017 and 2016 : For the year ended December 31, 2018 2017 2016 Depreciation and amortization: Performance Sensing $ 72,067 $ 68,910 $ 68,837 Sensing Solutions 16,798 17,179 14,095 Corporate and other (1) 156,475 184,282 225,469 Total depreciation and amortization $ 245,340 $ 270,371 $ 308,401 __________________________________________ (1) Included within Corporate and other is depreciation and amortization expense associated with the fair value step-up recognized in prior acquisitions and accelerated depreciation recorded in connection with restructuring actions. We do not allocate the additional depreciation and amortization expense associated with the step-up in the fair value of the PP&E and intangible assets associated with these acquisitions or accelerated depreciation related to restructuring actions to our segments. This treatment is consistent with the financial information reviewed by our chief operating decision maker. The following table presents total assets for our reportable segments as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Assets: Performance Sensing $ 1,490,310 $ 1,396,565 Sensing Solutions 468,131 424,237 Corporate and other (1) 4,839,246 4,820,723 Total assets $ 6,797,687 $ 6,641,525 __________________________________________ (1) Included within Corporate and other as of December 31, 2018 and 2017 is $3,081.3 million and $3,005.5 million , respectively, of goodwill, as well as $897.2 million and $920.1 million , respectively, of other intangible assets, net, $729.8 million and $753.1 million , respectively, of cash and cash equivalents, and $36.5 million and $36.1 million , respectively, of PP&E, net. This treatment is consistent with the financial information reviewed by our chief operating decision maker. The following table presents additions to property, plant and equipment and capitalized software for our reportable segments for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Additions to property, plant and equipment and capitalized software: Performance Sensing $ 130,234 $ 106,520 $ 99,299 Sensing Solutions 12,492 13,980 11,947 Corporate and other 17,061 24,084 18,971 Total additions to property, plant and equipment and capitalized software $ 159,787 $ 144,584 $ 130,217 Geographic Area Information The following tables present net revenue by geographic area and by significant country for the years ended December 31, 2018 , 2017 , and 2016 . In these tables, net revenue is aggregated based on an internal methodology that considers both the location of our subsidiaries and the primary location of each subsidiary's customers. For the year ended December 31, 2018 2017 2016 Net revenue: Americas $ 1,480,567 $ 1,367,113 $ 1,367,860 Asia and rest of world 1,012,526 903,118 810,094 Europe 1,028,534 1,036,502 1,024,334 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 For the year ended December 31, 2018 2017 2016 Net revenue: United States $ 1,360,590 $ 1,276,304 $ 1,322,206 Netherlands 585,036 571,735 550,937 China 560,938 478,713 412,460 Korea 188,114 184,101 182,464 United Kingdom 163,963 174,376 171,206 All other 662,986 621,504 563,015 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 The following tables present PP&E, net, by geographic area and by significant country as of December 31, 2018 and 2017 . In these tables, PP&E, net is aggregated based on the location of our subsidiaries. As of December 31, 2018 2017 PP&E, net: Americas $ 292,625 $ 296,863 Asia 309,542 266,524 Europe 185,011 186,662 PP&E, net $ 787,178 $ 750,049 As of December 31, 2018 2017 PP&E, net: United States $ 83,664 $ 95,603 China 239,315 211,566 Mexico 204,552 196,813 Bulgaria 119,477 97,562 United Kingdom 51,404 63,310 Malaysia 65,688 50,783 All other 23,078 34,412 PP&E, net $ 787,178 $ 750,049

Unaudited Quarterly Data

Unaudited Quarterly Data	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Unaudited Quarterly Data	Unaudited Quarterly Data A summary of the unaudited quarterly results of operations for the years ended December 31, 2018 and 2017 is as follows: For the three months ended December 31, 2018 September 30, 2018 June 30, 2018 March 31, 2018 Net revenue $ 847,922 $ 873,552 $ 913,860 $ 886,293 Gross profit $ 304,359 $ 315,218 $ 331,351 $ 303,836 Net income $ 254,099 $ 149,118 $ 105,288 $ 90,490 Basic net income per share $ 1.55 $ 0.89 $ 0.61 $ 0.53 Diluted net income per share $ 1.54 $ 0.88 $ 0.61 $ 0.52 For the three months ended December 31, 2017 September 30, 2017 June 30, 2017 March 31, 2017 Net revenue $ 840,534 $ 819,054 $ 839,874 $ 807,271 Gross profit (1) $ 301,799 $ 291,815 $ 299,369 $ 274,852 Net income $ 169,129 $ 88,035 $ 79,457 $ 71,736 Basic net income per share (2) $ 0.99 $ 0.51 $ 0.46 $ 0.42 Diluted net income per share $ 0.98 $ 0.51 $ 0.46 $ 0.42 __________________________________________ (1) On January 1, 2018, we adopted FASB ASU No. 2017-07, which requires the service cost component of net periodic benefit cost to be presented separately on the consolidated statements of operations from the other components of net periodic benefit cost. Accordingly, a portion of cost of revenue (a component of Gross profit) has been recast to other, net for each quarter in the year ended December 31, 2017. Refer to Note 13, "Pension and Other Post-Retirement Benefits," for additional details. (2) The sum of basic net income per share for the four quarters does not equal the full year basic net income per share due to rounding. Acquisitions and Divestitures On August 31, 2018 we completed the sale of the Valves Business. As a result, in the third quarter of 2018, we recognized a (pre-tax) gain of $64.4 million and costs of $5.9 million in restructuring and other charges, net in our consolidated statement of operations. Refer to Note 17, "Acquisitions and Divestitures," for further discussion of the sale of the Valves Business. Our consolidated results presented above only include the results of this business before August 31, 2018. On October 31, 2018 we completed the acquisition of GIGAVAC. Refer to Note 17, "Acquisitions and Divestitures," for further discussion if this merger. Net revenue of GIGAVAC included in our consolidated statement of operations in the fourth quarter of 2018 was $12.6 million . In the fourth quarter of 2018, we recorded related transaction costs of $2.5 million , which are included in SG&A expense in our consolidated statements of operations. Income taxes In the fourth quarter of 2018, we recorded an income tax benefit of $122.1 million related to the realization of U.S. deferred tax assets previously offset by a valuation allowance. In the fourth quarter of 2017, we recorded an income tax benefit of $73.7 million to remeasure deferred tax liabilities associated with indefinite-lived intangible assets that are deemed to reverse as a result of changes in applicable U.S. tax law set forth in the Act. Refer to Note 7, "Income Taxes," for further discussion of tax related matters. Commodity forward contracts Gains and losses related to our commodity forward contracts, which are not designated for hedge accounting treatment in accordance with FASB ASC Topic 815, are recorded in other, net in the consolidated statements of operations. Refer to Note 19, "Derivative Instruments and Hedging Activities," for further discussion of our commodity forward contracts, and Note 6, "Other, Net," for a detail of other, net for the years ended December 31, 2018 and 2017. The below table presents gains/(losses) recognized related to these contracts in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ 373 $ (4,233 ) $ (1,426 ) $ (3,195 ) 2017 $ 3,550 $ 2,956 $ (1,957 ) $ 5,440 Restructuring and other charges The below table presents charges/(gains) recorded to restructuring and other charges, net in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ 870 $ (52,698 ) $ 244 $ 3,766 2017 $ 207 $ 1,329 $ 6,389 $ 11,050 The amount presented as restructuring and other charges, net in the third quarter of 2018 relates in large part to the gain on sale of the Valves Business, net of transaction costs. Refer to Note 5, "Restructuring and Other Charges, Net," for further discussion of our restructuring charges. Charges related to the Merger On March 28, 2018, we completed the Merger. Refer for Note 1, "Business Description and Basis of Presentation," for further discussion of the Merger. The table below presents expenses recorded related to the Merger in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ — $ — $ 1,766 $ 2,352 2017 $ 2,059 $ 3,518 $ 1,020 $ —

Schedule I - Condensed Financia

Schedule I - Condensed Financial Information of the Registrant	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Schedule I - Condensed Financial Information of the Registrant	SCHEDULE I—CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT SENSATA TECHNOLOGIES HOLDING PLC (Parent Company Only) Balance Sheets (Dollars in thousands) As of December 31, 2018 2017 Assets Current assets: Cash and cash equivalents $ 1,089 $ 2,150 Intercompany receivables from subsidiaries — 94,094 Prepaid expenses and other current assets 528 643 Total current assets 1,617 96,887 Investment in subsidiaries 2,932,218 2,258,559 Total assets $ 2,933,835 $ 2,355,446 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 58 $ 608 Intercompany payables to subsidiaries 323,561 7,465 Accrued expenses and other current liabilities 1,782 1,219 Total current liabilities 325,401 9,292 Pension obligations — 528 Total liabilities 325,401 9,820 Total shareholders’ equity 2,608,434 2,345,626 Total liabilities and shareholders’ equity $ 2,933,835 $ 2,355,446 The accompanying notes are an integral part of these condensed financial statements. SENSATA TECHNOLOGIES HOLDING PLC (Parent Company Only) Statements of Operations (Dollars in thousands) For the year ended December 31, 2018 2017 2016 Net revenue $ — $ — $ — Operating costs and expenses: Selling, general and administrative 10,153 6,894 104 Total operating costs and expenses 10,153 6,894 104 Loss from operations (10,153 ) (6,894 ) (104 ) Intercompany interest (expense)/income, net (4,709 ) 8 72 Other, net 474 (169 ) 107 (Loss)/income before income taxes and equity in net income of subsidiaries (14,388 ) (7,055 ) 75 Equity in net income of subsidiaries 613,383 415,412 262,359 Provision for income taxes — — — Net income $ 598,995 $ 408,357 $ 262,434 The accompanying notes are an integral part of these condensed financial statements. SENSATA TECHNOLOGIES HOLDING PLC (Parent Company Only) Statements of Comprehensive Income (Dollars in thousands) For the year ended December 31, 2018 2017 2016 Net income $ 598,995 $ 408,357 $ 262,434 Other comprehensive income/(loss), net of tax: Defined benefit plan 535 77 515 Subsidiaries' other comprehensive income/(loss) 36,451 (29,174 ) (8,592 ) Other comprehensive income/(loss) 36,986 (29,097 ) (8,077 ) Comprehensive income $ 635,981 $ 379,260 $ 254,357 The accompanying notes are an integral part of these condensed financial statements. SENSATA TECHNOLOGIES HOLDING PLC (Parent Company Only) Statements of Cash Flows (Dollars in thousands) For the year ended December 31, 2018 2017 2016 Net cash used in operating activities $ (14,253 ) $ (9,109 ) $ (4,756 ) Cash flows from investing activities: Return of capital from subsidiaries — 5,000 6,000 Net cash provided by investing activities — 5,000 6,000 Cash flows from financing activities: Proceeds from exercise of stock options and issuance of ordinary shares 6,093 7,450 3,944 Proceeds from intercompany borrowings 410,190 — — Payments to repurchase ordinary shares (399,417 ) — — Payment of employee restricted stock tax withholdings (3,674 ) (2,910 ) (4,752 ) Net cash provided by/(used in) financing activities 13,192 4,540 (808 ) Net change in cash and cash equivalents (1,061 ) 431 436 Cash and cash equivalents, beginning of year 2,150 1,719 1,283 Cash and cash equivalents, end of year $ 1,089 $ 2,150 $ 1,719 The accompanying notes are an integral part of these condensed financial statements. Basis of Presentation and Description of Business Sensata Technologies Holding plc (Parent Company)—Schedule I—Condensed Financial Information of Sensata Technologies Holding plc ("Sensata plc"), included in this Annual Report on Form 10-K, provides all parent company information that is required to be presented in accordance with the United States ("U.S.") Securities and Exchange Commission ("SEC") rules and regulations for financial statement schedules. The accompanying condensed financial statements have been prepared in accordance with the reduced disclosure requirements permitted by the SEC. Sensata plc and subsidiaries' audited consolidated financial statements are included elsewhere in this Annual Report on Form 10-K (this "Report"). On September 28, 2017, the Board of Directors of Sensata Technologies Holding N.V. ("Sensata N.V.") unanimously approved a plan to change our location of incorporation from the Netherlands to the United Kingdom (the "U.K."). To effect this change, on February 16, 2018 the shareholders of Sensata N.V. approved a cross-border merger between Sensata N.V. and Sensata plc, a newly formed, public limited company incorporated under the laws of England and Wales, with Sensata plc being the surviving entity (the "Merger"). We received approval of the Merger by the U.K. High Court of Justice, and the Merger was completed, on March 28, 2018. As a result thereof, Sensata plc became the publicly-traded parent of the subsidiary companies that were previously controlled by Sensata N.V., with no changes made to the business being conducted by us prior to the Merger. Due to the fact that the Merger was a business combination between entities under common control, the assets and liabilities exchanged were accounted for at their carrying values. Sensata plc conducts limited separate operations and acts primarily as a holding company. Sensata plc has no direct outstanding debt obligations. However, Sensata Technologies B.V, an indirect, wholly-owned subsidiary of Sensata plc, is limited in its ability to pay dividends or otherwise make other distributions to its immediate parent company and, ultimately, to Sensata plc, under its senior secured credit facilities and the indentures governing its senior notes. For a discussion of the debt obligations of the subsidiaries of Sensata plc, see Note 14, "Debt," of Sensata plc and subsidiaries' audited consolidated financial statements included elsewhere in this Report. All U.S. dollar amounts presented except per share amounts are stated in thousands, unless otherwise indicated. Commitments and Contingencies For a discussion of the commitments and contingencies of the subsidiaries of Sensata plc, see Note 15, "Commitments and Contingencies," of Sensata plc and subsidiaries' audited consolidated financial statements and accompanying notes thereto included elsewhere in this Report.

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS (Dollars in thousands) Balance at the Beginning of the Period Additions Deductions Balance at the End of the Period Charged, Net of Reversals, to Expenses/Against Revenue For the year ended December 31, 2018 Accounts receivable allowances $ 12,947 $ 2,194 $ (1,379 ) $ 13,762 For the year ended December 31, 2017 Accounts receivable allowances $ 11,811 $ 2,205 $ (1,069 ) $ 12,947 For the year ended December 31, 2016 Accounts receivable allowances $ 9,535 $ 3,072 $ (796 ) $ 11,811

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Accounting	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP"). The accompanying consolidated financial statements present separately our financial position, results of operations, comprehensive income, cash flows, and changes in shareholders’ equity. All intercompany balances and transactions have been eliminated. All U.S. dollar and share amounts presented, except per share amounts, are stated in thousands, unless otherwise indicated.
Reclassification	Certain reclassifications have been made to prior periods to conform to current period presentation.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in accordance with U.S. GAAP requires us to exercise our judgment in the process of applying our accounting policies. It also requires that we make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies at the date of the financial statements and the reported amounts of net revenue and expense during the reporting periods. Estimates are used when accounting for certain items such as allowances for doubtful accounts and sales returns, depreciation and amortization, inventory obsolescence, asset impairments (including goodwill and other intangible assets), contingencies, the value of share-based compensation, the determination of accrued expenses, certain asset valuations including deferred tax asset valuations, the useful lives of plant and equipment, post-retirement obligations, and business combinations. The accounting estimates used in the preparation of the consolidated financial statements will change as new events occur, as more experience is acquired, as additional information is obtained, and as the operating environment changes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition On January 1, 2018, we adopted FASB ASC Topic 606, Revenue from Contracts with Customers . This standard replaced previous revenue recognition rules with a comprehensive revenue measurement and recognition standard and expanded disclosure requirements. Upon adoption, we applied the pertinent transition provisions to contracts that were not completed as of January 1, 2018 using the modified retrospective method. Accordingly, periods presented prior to January 1, 2018 are presented under the previous revenue recognition guidance (i.e., FASB ASC Topic 605, Revenue Recognition ). We recognize revenue to depict the transfer of promised goods to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods. In order to achieve this, we use the five step model outlined in FASB ASC Topic 606. Specifically, we (1) identify the contract with the customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) we satisfy a performance obligation. The vast majority of our contracts (as defined in FASB ASC Topic 606) are customer purchase orders ("P.O.s"), which explicitly require that we transfer a specified quantity of products to our customers, for which performance is generally satisfied in a short amount of time. We do not consider there to be a significant financing component of our contracts, as our terms generally provide for payment in a short time (that is, less than a year) after shipment to the customer. Our performance obligations are satisfied when control of the product is transferred to the customer (at a point in time), which is generally when the product is shipped from our warehouse or, in limited instances, when it is received by the customer, depending on the specific terms of the arrangement. Many of our products are designed and engineered to meet customer specifications. These activities, and the testing of our products to determine compliance with those specifications, occur prior to any revenue being recognized. Products are then manufactured and sold to customers. However, in certain cases, pre-production activities are a performance obligation in a customer P.O., and revenue is recognized when the performance obligation is satisfied. Customer arrangements do not involve post-installation or post-sale testing and acceptance. In determining the transaction price related to a contract, we determine whether the amount promised in a contract includes a variable amount (variable consideration). Variable consideration may be specified in the customer P.O., in another agreement that identifies terms and conditions of the transaction, or based on our customary practices. We have identified certain types of variable consideration that are included in the transaction price related to our contracts, including sales returns (which generally include a right of return for defective or non-conforming product) and trade discounts (including retrospective volume discounts and early payment incentives). Such variable consideration has not historically been material in relation to our net revenue and have been within our estimates. The transaction price excludes value-added tax and similar taxes. Amounts billed to our customers for shipping and handling are recognized as revenue, and the related costs that we incur are presented in cost of revenue. We do not provide separately priced warranties to our customers. Our standard terms of sale provide our customers with a warranty against faulty workmanship and the use of defective materials, which is not considered a distinct performance obligation in accordance with FASB ASC Topic 606.
Share-Based Compensation	Share-Based Compensation FASB ASC Topic 718, Compensation—Stock Compensation, requires that a company measure at fair value any new or modified share-based compensation arrangements with employees, such as stock options and restricted securities, and recognize as compensation expense that fair value over the requisite service period. Share-based compensation cost is generally recognized as a component of selling, general and administrative ("SG&A") expense, which is consistent with where the related employee costs are presented, however, such cost, or a portion thereof, may be capitalized provided certain criteria are met. Share-based awards may be subject to either cliff vesting (i.e., the entire award vests on a particular date) or graded vesting (i.e., portions of the award vest at different points in time). In accordance with FASB ASC Topic 718, compensation cost associated with share-based awards subject to cliff vesting must be recognized on a straight-line basis. However, for awards subject to graded vesting, companies have the option to recognize compensation cost on either a straight–line or accelerated basis. We have elected to recognize compensation costs for these awards using the straight-line method. We estimate the fair value of options on the grant date using the Black-Scholes-Merton option-pricing model. Key inputs and assumptions used in this model are as follows: • The fair value of the underlying ordinary shares. This is determined as the closing price of our ordinary shares on the New York Stock Exchange (the "NYSE") on the grant date. • The expected term. This is determined based upon our own historical average term of exercised and outstanding options. • Expected volatility. We consider our own historical volatility, as well as the historical and implied volatilities of publicly-traded companies within our industry, in estimating expected volatility for options. Implied volatility provides a forward-looking indication and may offer insight into expected industry volatility. • Risk-free interest rate. The risk-free interest rate is based on the yield for a U.S. Treasury security having a maturity similar to the expected term of the related option grant. • Expected dividend yield. The dividend yield of 0% is based on our history of having never declared or paid any dividends on our ordinary shares, and our current intention of not declaring any such dividends in the foreseeable future. See Item 5, "Market for Registrant's Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities," included elsewhere in this Report for further discussion of limitations on our ability to pay dividends. Restricted securities are valued using the closing price of our ordinary shares on the NYSE on the grant date. Certain of our restricted securities include performance conditions that require us to estimate the probable outcome of the performance condition. Compensation cost is recorded if it is probable that the performance condition will be achieved. Under the fair value recognition provisions of FASB ASC Topic 718, we recognize share-based compensation net of estimated forfeitures. Accordingly, we only recognize compensation cost for those awards expected to vest over the requisite service period. Compensation expense recognized for each award ultimately reflects the number of units that actually vest.
Financial Instruments	Financial Instruments Our financial instruments include derivative instruments, debt instruments, equity investments, and trade accounts receivable. Derivative financial instruments: We account for our derivative financial instruments in accordance with FASB ASC Topic 820, Fair Value Measurements and Disclosures and FASB ASC Topic 815, Derivatives and Hedging . In accordance with FASB ASC Topic 815, we recognize all derivatives on the balance sheet at fair value. The fair value of our derivative financial instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. These analyses utilize observable market-based inputs, including foreign currency exchange rates and commodity forward curves, and reflect the contractual terms of these instruments, including the period to maturity. Derivative instruments that are designated and qualify as hedges of the exposure to changes in the fair value of an asset, liability, or commitment, and that are attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivative instruments that are designated and qualify as hedges of the exposure to variability in expected future cash flows are considered cash flow hedges. Derivative instruments may also be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. Currently, our derivative instruments that are designated as accounting hedges are all cash flow hedges. We also hold derivative instruments that are not designated as accounting hedges. The accounting for changes in the fair value of our cash flow hedges depends on whether we have elected to designate the derivative as a hedging instrument for accounting purposes and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. In accordance with FASB ASC Topic 815, the effective portion of changes in the fair value of cash flow hedges is recognized in accumulated other comprehensive loss and is subsequently reclassified into earnings in the period in which the hedged forecasted transaction affects earnings. The ineffective portion of changes in the fair value of cash flow hedges is immediately recognized in earnings. Changes in the fair value of derivative instruments that are not designated as accounting hedges are recognized immediately in other, net. We present the cash flows arising from our derivative financial instruments in a manner consistent with the presentation of cash flows that relate to the underlying hedged items. We incorporate credit valuation adjustments to appropriately reflect both our own non-performance risk and the respective counterparty’s non-performance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of non-performance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees. We do not offset the fair value amounts recognized for derivative instruments against fair value amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral. We maintain derivative instruments with major financial institutions of investment grade credit rating and monitor the amount of credit exposure to any one issuer. We believe there are no significant concentrations of risk associated with our derivative instruments. Refer to Note 19, "Derivative Instruments and Hedging Activities," for further discussion of our derivative instruments. Debt Instruments: A premium or discount on a debt instrument is recognized on the balance sheet as an adjustment to the carrying amount of the debt liability. In general, amounts paid to creditors are considered a reduction in the proceeds received from the issuance of the debt and are accounted for as a component of the premium or discount on the issuance, not as an issuance cost. Direct and incremental costs associated with the issuance of debt instruments such as legal fees, printing costs, and underwriters' fees, among others, paid to parties other than creditors, are also reported and presented as a reduction of debt on the consolidated balance sheets. Debt issuance costs and premiums or discounts are amortized over the term of the respective financing arrangement using the effective interest method. Amortization of these amounts is included as a component of interest expense, net in the consolidated statements of operations. In accounting for debt refinancing transactions, we apply the provisions of FASB ASC Subtopic 470-50, Modifications and Extinguishments . Our evaluation of the accounting under FASB ASC Subtopic 470-50 is done on a creditor by creditor basis in order to determine if the terms of the debt are substantially different and, as a result, whether to apply modification or extinguishment accounting. In the event that an individual holder of existing debt did not invest in new debt, we apply extinguishment accounting. Borrowings associated with individual holders of new debt that are not holders of existing debt are accounted for as new issuances. Refer to Note 14, "Debt," for further details of our debt instruments and transactions. Equity Investments: On January 1, 2018, we adopted FASB Accounting Standards Update ("ASU") No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities . In accordance with this guidance, we measure equity investments (other than those accounted for under the equity method, those that result in consolidation of the investee, and certain other investments) either at fair value, with changes to fair value recognized in net income, or in certain instances, by use of a measurement alternative. Under the measurement alternative, such investments are measured at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Refer to Note 18, "Fair Value Measures," for further discussion of our measurement of financial instruments. Trade accounts receivable: Trade accounts receivable are recognized at invoiced amounts and do not bear interest. Trade accounts receivable are reduced by an allowance for losses on receivables, as described elsewhere in this Note 2. Concentrations of risk with respect to trade accounts receivable are generally limited due to the large number of customers in various industries and their dispersion across several geographic areas. Although we do not foresee that credit risk associated with these receivables will deviate from historical experience, repayment is dependent upon the financial stability of these individual customers.
Allowance for Losses on Receivables	Allowance for Losses on Receivables The allowance for losses on receivables is used to present accounts receivable, net at an amount that represents our estimate of the related transaction price recognized as revenue in accordance with FASB ASC Topic 606. The allowance represents an estimate of probable but unconfirmed losses in the receivable portfolio. We estimate the allowance on the basis of specifically identified receivables that are evaluated individually for impairment and a statistical analysis of the remaining receivables determined by reference to past default experience. Customers are generally not required to provide collateral for purchases. The allowance for losses on receivables also includes an allowance for sales returns (variable consideration). Management judgments are used to determine when to charge off uncollectible trade accounts receivable. We base these judgments on the age of the receivable, credit quality of the customer, current economic conditions, and other factors that may affect a customer’s ability and intent to pay.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Businesses acquired are recorded at their fair value on the date of acquisition, with the excess of the purchase price over the fair value of identifiable assets acquired and liabilities assumed recognized as goodwill. Intangible assets acquired may include either definite-lived or indefinite-lived intangible assets, or both. In accordance with the requirements of FASB ASC Topic 350, Intangibles—Goodwill and Other , goodwill and intangible assets determined to have an indefinite useful life are not amortized. Instead these assets are evaluated for impairment on an annual basis, and whenever events or business conditions change that could indicate that the asset is impaired. We evaluate goodwill and indefinite-lived intangible assets for impairment in the fourth quarter of each fiscal year, unless events occur which trigger the need for an earlier impairment review.
Goodwill	Goodwill: We have identified six reporting units: Performance Sensing, Electrical Protection, Industrial Sensing, Aerospace, Power Management, and Interconnection. These reporting units have been identified based on the definitions and guidance provided in FASB ASC Topic 350. We periodically review these reporting units to ensure that they continue to reflect the manner in which the business is operated. Certain assets and liabilities relate to the operations of multiple reporting units. We allocate these assets and liabilities to the related reporting units based on methods that we believe are reasonable and supportable, and we apply that allocation method on a consistent basis from year to year. Other assets and liabilities, such as cash and cash equivalents, property, plant and equipment associated with our corporate offices, and debt, we view as being corporate in nature. Accordingly, we do not assign these assets and liabilities to our reporting units. In the event we reorganize our business, we reassign the assets and liabilities among the affected reporting units using a reasonable and supportable methodology. As businesses are acquired, we assign assets acquired and liabilities assumed to a new or existing reporting unit as of the date of the acquisition. Goodwill generated by the acquisition of GIGAVAC, LLC ("GIGAVAC") in October 2018 has been allocated between our Performance Sensing and Industrial Sensing reporting units as of December 31, 2018, subject to changes prior to the end of the measurement period. Refer to Note 11, "Goodwill and Other Intangible Assets, Net," and Note 17, "Acquisitions and Divestitures," for additional information regarding the acquisition of GIGAVAC. In the event a disposal group meets the definition of a business, goodwill is allocated to the disposal group based on the relative fair value of the disposal group to the retained portion of the related reporting unit. We have the option to first assess qualitative factors to determine whether a quantitative analysis must be performed. The objective of a qualitative analysis is to determine whether it is more likely than not that the fair value of a reporting unit is less than its net book value. If we elect not to use this option, or if we determine that it is more likely than not that the fair value of a reporting unit is less than its net book value, then we perform the first step of the quantitative analysis prescribed by FASB ASC Topic 350. In this step we compare the estimated fair values of our reporting units to their respective net book values, including goodwill, to determine whether there is an indicator of potential impairment. If the net book value of a reporting unit exceeds its estimated fair value, we conduct a second step in which we calculate the implied fair value of goodwill. If the carrying value of the reporting unit’s goodwill exceeds its calculated implied fair value, an impairment loss is recognized in an amount equal to that excess. The implied fair value of goodwill is determined in the same manner as the amount of goodwill recognized in a business combination. That is, the fair value of the reporting unit is allocated to all of its identifiable assets and liabilities as if the reporting unit had been acquired in a business combination at the date of assessment, and the fair value of the reporting unit was the purchase price paid to acquire the reporting unit. The excess of the fair value of the reporting unit over the sum of the fair values of each of its identifiable assets and liabilities is the implied fair value of goodwill. The fair value measurements of our reporting units are categorized in level 3 of the fair value hierarchy.
Intangible Assets	Indefinite-lived intangible assets: Similar to goodwill, we perform an annual impairment review of our indefinite-lived intangible assets in the fourth quarter of each fiscal year, unless events occur that trigger the need for an earlier impairment review. We have the option to first assess qualitative factors in determining whether it is more likely than not that an indefinite-lived intangible asset is impaired. If we elect not to use this option, or we determine that it is more likely than not that the asset is impaired, we perform a quantitative impairment review that requires us to estimate the fair value of the indefinite-lived intangible asset and compare that amount to its carrying value. We estimate the fair value by using the relief-from-royalty method, which requires us to make assumptions about future conditions impacting the value of the indefinite-lived intangible assets, including projected growth rates, cost of capital, effective tax rates, and royalty rates. Impairment, if any, is based on the excess of the carrying value over the fair value of these assets. Definite-lived intangible assets: Definite-lived, acquisition-related intangible assets are amortized on an economic-benefit basis according to the useful lives of the assets, or on a straight-line basis if a pattern of economic benefits cannot be reliably determined. Capitalized software and capitalized software licenses are presented on the consolidated balance sheets as intangible assets. Capitalized software licenses are amortized on a straight-line basis over the lesser of the term of the license or the estimated useful life of the software. Capitalized software is amortized on a straight-line basis over its estimated useful life. Reviews are regularly performed to determine whether facts or circumstances exist that indicate that the carrying values of our definite-lived intangible assets are impaired. If we determine that such facts or circumstances exist, we estimate the recoverability of these assets by comparing the projected undiscounted net cash flows associated with these assets to their respective carrying values. If the sum of the projected undiscounted net cash flows is less than the carrying value of an asset, the impairment charge is measured as the excess of the carrying value over the fair value of that asset. We determine fair value by using the appropriate income approach valuation methodology, depending on the nature of the intangible asset.
Income Taxes	Income Taxes We estimate our provision for income taxes in each of the jurisdictions in which we operate. The provision for income taxes includes both our current and deferred tax exposure. Our deferred tax exposure is measured using the asset and liability method, under which deferred income taxes are recorded to reflect the future tax consequences of differences between the tax bases of assets and liabilities and their financial reporting amounts at each balance sheet date, based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to reverse or settle. The effect on deferred tax assets and liabilities of a change in statutory tax rates is recognized in the consolidated statements of operations as an adjustment to income tax expense in the period that includes the enactment date. In measuring our deferred tax assets, we consider all available evidence, both positive and negative, to determine whether, based on the weight of that evidence, a valuation allowance is needed for all or some portion of the deferred tax assets. If it is determined that it is more likely than not that future tax benefits associated with a deferred tax asset will not be realized, a valuation allowance is provided. As a result, we maintain valuation allowances against the deferred tax assets in jurisdictions that have incurred losses in recent periods and in which it is more likely than not that such deferred tax assets will not be utilized in the foreseeable future. The U.S. Tax Reform Act includes two new U.S. tax base erosion provisions, the global intangible low-taxed income ("GILTI") provisions and the base-erosion and anti-abuse tax ("BEAT") provisions. The GILTI provisions require our U.S. operations to include in our U.S. income tax return, earnings of subsidiaries held by our U.S. group to the extent that these subsidiaries have earnings in excess of an allowable return on their tangible assets. We have elected to account for GILTI in the period in which it is incurred, and therefore have not adjusted our deferred tax assets for any future impacts this provision may have. The Act subjects a U.S. taxpayer to pay a BEAT if it is greater than the taxpayer's regular tax liability. The BEAT provision eliminates the deduction of certain payments made to foreign affiliates (referred to as base erosion payments) but applies a lower tax rate on the resulting BEAT income. The FASB Staff Q&A, Topic 740, No. 4, Accounting for the Base Erosion Anti-Abuse Tax , states that the incremental effect of BEAT should be recognized in the year the BEAT is incurred as a period expense only, and an entity would not need to evaluate the effect of potentially paying the BEAT in future years on the realization of deferred tax assets recognized under the regular tax system, because the realization of the deferred tax asset would reduce its regular tax liability, even when an incremental BEAT liability would be owed in that period. We have followed this guidance in our current tax calculation and evaluation of the realizability of our deferred tax assets. In accordance with FASB ASC Topic 740, Income Taxes , penalties and interest related to unrecognized tax benefits may be classified as either income taxes or another expense line item in the consolidated statements of operations. We classify interest and penalties related to unrecognized tax benefits within the (benefit from)/provision for income taxes line of the consolidated statements of operations.
Pension and Other Post-Retirement Benefits	Pension and Other Post-Retirement Benefits We sponsor various pension and other post-retirement benefit plans covering our current and former employees in several countries. The funded status of pension and other post-retirement benefit plans, recognized on our consolidated balance sheets as an asset, current liability, or long-term liability, is measured as the difference between the fair value of plan assets and the benefit obligation at the measurement date. In general, the measurement date coincides with our fiscal year end, however, certain significant events, such as (1) plan amendments, (2) business combinations, (3) settlements or curtailments, or (4) plan mergers, may trigger the need for an interim measurement of both the plan assets and benefit obligations. Benefit obligations represent the actuarial present value of all benefits attributed by the pension formula as of the measurement date to employee service rendered before that date. The value of benefit obligations takes into consideration various financial assumptions, including assumed discount rate and the rate of increase in healthcare costs, and demographic assumptions, including compensation rate increases, retirement patterns, employee turnover rates, and mortality rates. We review these assumptions annually. Our review of demographic assumptions includes analyzing historical patterns and/or referencing industry standard tables, combined with our expectations around future compensation and staffing strategies. The difference between these assumptions and our actual experience results in the recognition of an actuarial gain or loss. Actuarial gains and losses are recorded directly to other comprehensive income or loss. If the total net actuarial gain or loss included in accumulated other comprehensive loss exceeds a threshold of 10% of the greater of the projected benefit obligation or the market related value of plan assets, it is subject to amortization and recorded as a component of net periodic pension cost over the average remaining service lives of the employees participating in the pension or post-retirement benefit plan. The discount rate reflects the current rate at which the pension and other post-retirement liabilities could be effectively settled, considering the timing of expected payments for plan participants. It is used to discount the estimated future obligations of the plans to the present value of the liability reflected in the financial statements. In estimating this rate in countries that have a market of high-quality, fixed-income investments, we consider rates of return on these investments included in various bond indices, adjusted to eliminate the effects of call provisions and differences in the timing and amounts of cash outflows related to the bonds. In other countries where a market of high-quality, fixed-income investments does not exist, we estimate the discount rate using government bond yields or long-term inflation rates. The expected return on plan assets reflects the average rate of earnings expected on the funds invested to provide for the benefits included in the projected benefit obligation. To determine the expected return on plan assets, we use the fair value of plan assets and consider the historical returns earned by similarly invested assets, the rates of return expected on plan assets in the future, and our investment strategy and asset mix with respect to the plans’ funds. Changes to benefit obligations may also be initiated by a settlement or curtailment. A settlement of a defined benefit obligation is an irrevocable transaction that relieves us (or the plan) of primary responsibility for the defined benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. The settlement of all or more than a minor portion of the pension obligation constitutes an event that requires recognition of all or part of the net actuarial gains (or) losses deferred in accumulated other comprehensive loss. Our policy is to apply settlement accounting to the extent our year-to date settlements for a given plan exceed the sum of our forecasted full year service cost and interest cost for that particular plan. A curtailment is an event that significantly reduces the expected years of service of active employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future service. The curtailment accounting provisions are applied on a plan-by-plan basis. The total gain or loss resulting from a curtailment is the sum of two distinct elements: (1) prior service cost write-off (see discussion in "amortization of net prior service cost/credit" above) and (2) curtailment gain or loss. Our policy is that a curtailment event represents one for which we expect a 10% (or greater) reduction in future years of service or an elimination of the accrual of defined benefits for some or all of the future services of 10% (or greater) of the plan's participants. Contributions made to pension and other post-retirement benefit plans are presented as cash used in operations within our consolidated statements of cash flows.
Inventories	Inventories Inventories are stated at the lower of cost or estimated net realizable value. The cost of raw materials, work-in-process, and finished goods is determined based on a first-in, first-out basis and includes material, labor, and applicable manufacturing overhead. We conduct quarterly inventory reviews for salability and obsolescence, and inventory considered unlikely to be sold is adjusted to net realizable value.
Property, Plant and Equipment and Other Capitalized Costs	Property, Plant and Equipment and Other Capitalized Costs PP&E is stated at cost, and in the case of plant and equipment, is depreciated on a straight-line basis over its estimated economic useful life. The depreciable lives of plant and equipment are as follows: Buildings and improvements 2 – 40 years Machinery and equipment 2 – 15 years Leasehold improvements are amortized using the straight-line method over the shorter of the remaining lease term or the estimated economic useful lives of the improvements. Amortization of leasehold improvements is included in depreciation expense. Assets held under capital leases are recorded at the lower of the present value of the minimum lease payments or the fair value of the leased asset at the inception of the lease. Depreciation expense associated with capital leases is computed using the straight-line method over the shorter of the estimated useful lives of the assets or the period of the related lease, unless ownership is transferred by the end of the lease or there is a bargain purchase option, in which case the asset is depreciated, normally on a straight-line basis, over the useful life that would be assigned if the asset were owned. Expenditures for maintenance and repairs are charged to expense as incurred, whereas major improvements that increase asset values and extend useful lives are capitalized.
Foreign Currency	Foreign Currency We derive a significant portion of our net revenue from markets outside of the U.S. For financial reporting purposes, the functional currency of all of our subsidiaries is the U.S. dollar because of the significant influence of the U.S. dollar on our operations. In certain instances, we enter into transactions that are denominated in a currency other than the U.S. dollar. At the date that such transaction is recognized, each asset, liability, revenue, expense, gain, or loss arising from the transaction is measured and recorded in U.S. dollars using the exchange rate in effect at that date. At each balance sheet date, recorded monetary balances denominated in a currency other than U.S. dollar are adjusted to U.S. dollars using the exchange rate at the balance sheet date, with gains or losses recognized in other, net in the consolidated statements of operations.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash comprises cash on hand. Cash equivalents are short-term, highly liquid investments that are readily convertible to known amounts of cash, are subject to an insignificant risk of change in value, and have original maturities of three months or less.
Recently issued accounting standards adopted in the current period and to be adopted in a future period	Recently issued accounting standards adopted in the current period: In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) , which modifies how all entities recognize revenue, and consolidates into one FASB ASC Topic (that is FASB ASC Topic 606) the guidance found in FASB ASC Topic 605 and various other revenue accounting standards for specialized transactions and industries. Refer to the Revenue Recognition section of the significant accounting policies discussed elsewhere in this Note 2 for further discussion of this guidance. We adopted FASB ASC Topic 606 on January 1, 2018 using the modified retrospective transition method. Refer to Note 3, "Revenue Recognition," for additional details on this implementation. In January 2016, the FASB issued ASU No. 2016-01, which addresses certain aspects of the recognition, measurement, presentation, and disclosure of financial instruments. Refer to the Financial Instruments section of the significant accounting policies discussed elsewhere in this Note 2 for further discussion of this guidance. We adopted FASB ASU No. 2016-01 on January 1, 2018, which resulted in no impact on our consolidated financial position or results of operations. Refer to Note 18, "Fair Value Measures," for further discussion of the application of the measurement alternative to our $50.0 million equity investment in Series B Preferred Stock of Quanergy, Inc ("Quanergy"). In March 2017, the FASB issued ASU No. 2017-07, which requires a change in the presentation of net periodic benefit cost on the consolidated statements of operations. Refer to the Pension and Other Post-Retirement Benefit Plans section of the significant accounting policies discussed elsewhere in this Note 2 for further discussion of this guidance. We adopted this guidance on January 1, 2018 and, as a result, we present the service cost component of net periodic benefit cost in the cost of revenue, R&D, and SG&A expense line items, and we present the non-service components of net periodic benefit cost in other, net. Refer to Note 6, "Other, Net," for the total other components of net periodic benefit cost. All prior period amounts have been recast in our consolidated statements of operations to reflect the revised presentation, with the adjustments presented in Note 13, "Pension and Other Post-Retirement Benefits." Other recently issued accounting standards adopted in the current period did not have a material impact on our consolidated financial position or results of operations. Recently issued accounting standards to be adopted in a future period: In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842) , which establishes new accounting and disclosure requirements for leases. FASB ASU No. 2016-02 requires lessees to classify most leases as either finance or operating leases and to initially recognize a lease liability and right-of-use asset. Entities may elect to account for certain short-term leases (with a term of one year or less) using a method similar to the current operating lease model. The statements of operations will include, for finance leases, separate recognition of interest on the lease liability and amortization of the right-of-use asset and for operating leases, a single lease cost, calculated so that the cost of the lease is allocated over the lease term on a straight-line basis. FASB ASU No. 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods therein, with early adoption permitted. We have developed an implementation plan to adopt this new guidance, which included an assessment of the impact of the new guidance on our financial position and results of operation. Through our implementation efforts, we have decided that we will elect to apply the package of practical expedients, and we will not elect to apply the hindsight practical expedient. In July 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842), Targeted Improvements , which creates an optional transition expedient that allows an entity to apply the transition provisions of the new standard, including its disclosure requirements, at its adoption date instead of at the beginning of the earliest comparative period presented as originally required by FASB ASU No. 2016-02. We adopted FASB ASU No. 2016-02 on January 1, 2019 using this transition expedient. We have determined that adoption of this standard will result in the recognition of a lease liability and right-of-use asset for certain operating leases that are currently not recognized on our consolidated balance sheets, which we expect to be recorded using an incremental borrowing rate, however the amount recorded will not be material in relation to our consolidated balance sheets. At December 31, 2018, we are contractually obligated to make future payments of $79.4 million under our operating lease obligations in existence as of that date, primarily related to long-term facility leases. In August 2017, the FASB issued ASU No. 2017-12, Derivatives and Hedging (Topic 815) , which changes both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results, in order to better align an entity’s risk management activities and financial reporting for hedging relationships. The amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. FASB ASU No. 2017-12 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those annual reporting periods, with early adoption permitted. We will adopt FASB ASU No. 2017-12 on January 1, 2019, which will not have a material impact on our consolidated financial position or results of operations. Other recently issued accounting standards to be adopted in future periods are not expected to have a material impact on our consolidated financial position or results of operations. We adopted FASB ASC Topic 606 on January 1, 2018, and we applied the pertinent transition provisions to contracts that were not completed as of January 1, 2018 using the modified retrospective method. Accordingly, periods presented prior to January 1, 2018 are presented under the previous revenue recognition guidance, including FASB ASC Topic 605. Refer to Note 2, "Significant Accounting Policies," for detailed discussion of the accounting policies related to revenue recognition. Because (1) the vast majority of our revenue is derived from the sale of tangible products for which we recognize revenue at a point in time and (2) the contracts that relate to these product shipments are purchase orders that have firm purchase commitments (generally over a short period of time), the adoption of FASB ASC Topic 606 did not have a material effect on our financial statements or results of operations, and no cumulative catch-up adjustment was required.
Legal Proceedings and Claims	Legal Proceedings and Claims We are regularly involved in a number of claims and litigation matters in the ordinary course of business. Most of our litigation matters are third-party claims related to patent infringement allegations or for property damage allegedly caused by our products, but some involve allegations of personal injury or wrongful death. Although it is not feasible to predict the outcome of these matters, based upon our experience and current information known to us, we do not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on our results of operations, financial position, or cash flows. We account for litigation and claims losses in accordance with FASB ASC Topic 450, Contingencies . Under FASB ASC Topic 450, loss contingency provisions are recorded for probable and estimable losses at our best estimate of a loss or, when a best estimate cannot be made, at our estimate of the minimum loss. These estimates are often developed prior to knowing the amount of the ultimate loss, require the application of considerable judgment, and are refined each accounting period as additional information becomes known. Accordingly, we are often initially unable to develop a best estimate of loss and therefore the minimum amount, which could be an immaterial amount, is recorded. As information becomes known, either the minimum loss amount is increased, or a best estimate can be made, generally resulting in additional loss provisions. A best estimate amount may be changed to a lower amount when events result in an expectation of a more favorable outcome than previously expected.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Property, Plant and Equipment, Schedule of Useful Lives	The depreciable lives of plant and equipment are as follows: Buildings and improvements 2 – 40 years Machinery and equipment 2 – 15 years

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents net revenue disaggregated by segment and end market for the years ended December 31, 2018, 2017, and 2016: Performance Sensing Sensing Solutions Total For the year ended December 31, For the year ended December 31, For the year ended December 31, 2018 2017 2016 2018 2017 2016 2018 2017 2016 Net revenue: Automotive $ 2,076,834 $ 1,989,152 $ 1,973,264 $ 49,961 $ 50,463 $ 47,972 $ 2,126,795 $ 2,039,615 $ 2,021,236 HVOR 550,817 471,448 412,116 — — — 550,817 471,448 412,116 Industrial — — — 336,617 312,137 289,045 336,617 312,137 289,045 Appliance and HVAC — — — 208,482 209,958 187,815 208,482 209,958 187,815 Aerospace — — — 164,294 150,782 151,802 164,294 150,782 151,802 Other — — — 134,622 122,793 140,274 134,622 122,793 140,274 Net revenue $ 2,627,651 $ 2,460,600 $ 2,385,380 $ 893,976 $ 846,133 $ 816,908 $ 3,521,627 $ 3,306,733 $ 3,202,288

Share-Based Payment Plans (Tabl

Share-Based Payment Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of stock option activity for the years ended December 31, 2018 , 2017 , and 2016 is presented in the table below (amounts have been calculated based on unrounded shares): Number of Options (thousands) Weighted-Average Exercise Price Per Option Weighted-Average Remaining Contractual Term (years) Aggregate Intrinsic Value Balance as of December 31, 2015 3,361 $ 32.89 6.2 $ 47,967 Granted (1) 654 $ 37.89 Forfeited or expired (111 ) $ 43.95 Exercised (358 ) $ 11.05 $ 9,501 Balance as of December 31, 2016 3,546 $ 35.67 6.3 $ 19,844 Granted 387 $ 43.67 Forfeited or expired (1 ) $ 32.03 Exercised (326 ) $ 22.86 $ 7,175 Balance as of December 31, 2017 3,606 $ 37.69 6.0 $ 50,130 Granted 307 $ 51.83 Forfeited or expired (39 ) $ 45.59 Exercised (172 ) $ 35.31 $ 3,143 Balance as of December 31, 2018 3,702 $ 38.89 5.3 $ 27,846 Options vested and exercisable as of December 31, 2018 2,625 $ 36.75 4.2 $ 24,224 Vested and expected to vest as of December 31, 2018 3,556 $ 38.65 5.2 $ 27,407 __________________________________________ (1) Includes 257 performance-based options.
Schedule of Nonvested Share Activity	A summary of the status of our unvested options as of December 31, 2018 , and of the changes during the year then ended, is presented in the table below (amounts have been calculated based on unrounded shares): Number of Options (thousands) Weighted-Average Grant-Date Fair Value Balance as of December 31, 2017 1,184 $ 13.72 Granted during the year 307 $ 15.70 Vested during the year (383 ) $ 14.49 Forfeited or expired during the year (31 ) $ 14.26 Balance as of December 31, 2018 1,077 $ 13.98
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The weighted-average key assumptions used in estimating the grant-date fair value of options for the years ended December 31, 2018, 2017, and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Expected dividend yield 0.00 % 0.00 % 0.00 % Expected volatility 25.00 % 30.00 % 30.00 % Risk-free interest rate 2.62 % 2.08 % 1.48 % Expected term (years) 6.0 6.0 6.0 Fair value per share of underlying ordinary shares $ 51.83 $ 43.67 $ 37.89
Schedule of Nonvested Restricted Stock Units Activity	A summary of restricted securities granted in the years ended December 31, 2018, 2017, and 2016 is presented below: Percentage Range of Units That May Vest (1) 0.0% to 150.0% 0.0% to 172.5% 0.0% to 200.0% (Awards in thousands) RSU Awards Granted Weighted-Average PRSU Awards Granted Weighted-Average Grant-Date Fair Value PRSU Awards Granted Weighted-Average Grant-Date Fair Value PRSU Awards Granted Weighted-Average Grant-Date Fair Value 2018 218 $ 51.05 63 $ 51.83 118 $ 51.83 — $ — 2017 182 $ 43.24 — $ — 183 $ 43.67 53 $ 43.33 2016 319 $ 38.33 — $ — 180 $ 38.96 — $ — __________________________________________ (1) Represents the percentage range of PRSU award units granted that may vest according to the terms of the awards, The amounts presented within this table do not reflect our current assessment of the probable outcome of vesting based on the achievement or expected achievement of performance conditions. A summary of activity related to outstanding restricted securities for fiscal years 2018 , 2017 , and 2016 is presented in the table below (amounts have been calculated based on unrounded shares): Restricted Securities (thousands) Weighted-Average Grant-Date Fair Value Balance as of December 31, 2015 654 $ 45.87 Granted 499 $ 38.56 Forfeited (48 ) $ 47.01 Vested (185 ) $ 33.41 Balance as of December 31, 2016 920 $ 44.35 Granted 418 $ 43.44 Forfeited (35 ) $ 43.94 Vested (222 ) $ 42.24 Balance as of December 31, 2017 1,081 $ 44.43 Granted 399 $ 51.40 Forfeited (121 ) $ 48.28 Vested (240 ) $ 53.01 Balance as of December 31, 2018 1,119 $ 44.66
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest	Aggregate intrinsic value information for restricted securities as of December 31, 2018 , 2017 , and 2016 is presented below: As of December 31, 2018 2017 2016 Outstanding $ 50,161 $ 55,271 $ 35,845 Expected to vest $ 44,203 $ 42,106 $ 26,937
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Restricted Stock Units, Weighted Average Remaining Period	The weighted-average remaining periods over which the restrictions will lapse as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, (Amounts in years) 2018 2017 2016 Outstanding 1.2 1.3 1.5 Expected to vest 1.2 1.4 1.5
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan	The table below presents non-cash compensation expense related to our equity awards, which is recorded within SG&A expense in the consolidated statements of operations, during the identified periods: For the year ended December 31, 2018 2017 2016 Options $ 5,739 $ 6,046 $ 7,094 Restricted securities 18,086 13,773 10,331 Total share-based compensation expense $ 23,825 $ 19,819 $ 17,425
Schedule of Unrecognized Compensation Cost, Nonvested Awards	The table below presents unrecognized compensation expense at December 31, 2018 for each class of award, and the remaining expected term for this expense to be recognized: Unrecognized Compensation Expense Expected Recognition (years) Options $ 9,329 2.1 Restricted securities 23,168 1.6 Total unrecognized compensation expense $ 32,497

Restructuring and Other Charg_2

Restructuring and Other Charges, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs	Restructuring and other charges, net for the years ended December 31, 2018, 2017, and 2016 were as follows: For the year ended December 31, 2018 2017 2016 Severance costs, net (1) $ 7,566 $ 11,125 $ 813 Facility and other exit costs (2) 877 7,850 3,300 Gain on sale of Valves Business (3) (64,423 ) — — Other (4) 8,162 — — Restructuring and other charges, net $ (47,818 ) $ 18,975 $ 4,113 __________________________________________ (1) Severance costs for the year ended December 31, 2018 were primarily related to limited workforce reductions of manufacturing, engineering, and administrative positions as well as the elimination of certain positions related to site consolidations. Severance costs, net recognized during the year ended December 31, 2017 included $8.4 million of charges related to the closure of our facility in Minden, Germany, a site we obtained in connection with the acquisition of certain subsidiaries of Custom Sensors & Technologies Ltd. ("CST"). Severance costs for the year ended December 31, 2016 primarily related to charges recorded in connection with acquired businesses and the termination of a limited number of employees in various locations throughout the world. (2) Facility and other exit costs for the year ended December 31, 2017 included $3.2 million of costs related to the closure of our facility in Minden, Germany and the transfer of equipment to alternate operating sites as well as $3.1 million of costs associated with the consolidation of two other manufacturing sites in Europe. Facility and other exit costs for the year ended December 31, 2016 primarily related to the relocation of manufacturing lines from our facility in the Dominican Republic to a manufacturing facility in Mexico. (3) In fiscal year 2018 we completed the sale of the the capital stock of Schrader Bridgeport International, Inc. and August France Holding Company SAS (collectively, the "Valves Business"). The gain on this sale is included in restructuring and other charges, net. Refer to Note 17, "Acquisitions and Divestitures," for further discussion of the sale of the Valves Business. (4) In the year ended December 31, 2018, we incurred $5.9 million of incremental direct costs in order to transact the sale of the Valves Business and $2.2 million of deferred compensation incurred in connection with the acquisition of GIGAVAC. Refer to Note 17, "Acquisitions and Divestitures," for further discussion.
Schedule of Restructuring Reserve by Type of Cost	Changes to our severance liability during the years ended December 31, 2018 and 2017 were as follows: Severance Balance as of December 31, 2016 $ 17,350 Charges, net of reversals 11,125 Payments (22,511 ) Foreign currency remeasurement 1,619 Balance as of December 31, 2017 7,583 Charges, net of reversals 7,566 Payments (8,341 ) Foreign currency remeasurement (217 ) Balance as of December 31, 2018 $ 6,591
Schedule of Restructuring Reserve by Balance Sheet Location	The following table outlines the current and long-term components of our severance liability recognized in the consolidated balance sheets as of December 31, 2018 and 2017 . As of December 31, 2018 2017 Accrued expenses and other current liabilities $ 6,591 $ 4,184 Other long-term liabilities — 3,399 Total severance liability $ 6,591 $ 7,583

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign	Income/(loss) before taxes for the years ended December 31, 2018 , 2017 , and 2016 was categorized by jurisdiction as follows: U.S. Non-U.S. Total 2018 $ 68,027 $ 458,348 $ 526,375 2017 $ (11,425 ) $ 413,866 $ 402,441 2016 $ (43,842 ) $ 365,287 $ 321,445
Schedule of Components of Income Tax Expense (Benefit)	(Benefit from)/provision for income taxes for the years ended December 31, 2018 , 2017 , and 2016 was categorized by jurisdiction as follows: U.S. Federal Non-U.S. U.S. State Total 2018 Current $ 5,700 $ 64,666 $ 1,082 $ 71,448 Deferred (109,663 ) (18,770 ) (15,635 ) (144,068 ) Total $ (103,963 ) $ 45,896 $ (14,553 ) $ (72,620 ) 2017 Current $ — $ 50,601 $ 240 $ 50,841 Deferred (56,956 ) (1,104 ) 1,303 (56,757 ) Total $ (56,956 ) $ 49,497 $ 1,543 $ (5,916 ) 2016 Current $ 464 $ 49,977 $ 226 $ 50,667 Deferred 10,036 2,010 (3,702 ) 8,344 Total $ 10,500 $ 51,987 $ (3,476 ) $ 59,011
Schedule of Effective Income Tax Rate Reconciliation	The principal reconciling items from income tax computed at the U.S. statutory tax rate for the years ended December 31, 2018 , 2017 , and 2016 were as follows: For the year ended December 31, 2018 2017 2016 Tax computed at statutory rate of 21% in 2018 and 35% in 2017 and 2016 $ 110,539 $ 140,854 $ 112,506 Change in valuation allowances (123,426 ) (3,368 ) 30,565 Foreign tax rate differential (41,200 ) (111,990 ) (86,339 ) Change in tax laws or rates (22,264 ) 3,912 2,542 Research and development incentives (19,475 ) (5,922 ) (10,961 ) U.S. state taxes, net of federal benefit (11,499 ) 1,087 (2,166 ) Unrealized foreign exchange losses, net 11,346 830 3,829 Reserve for tax exposure 10,775 38,013 11,227 Withholding taxes not creditable 8,734 3,896 6,014 U.S. Tax Reform impact — (73,668 ) — Other 3,850 440 (8,206 ) (Benefit from)/provision for income taxes $ (72,620 ) $ (5,916 ) $ 59,011
Schedule of Deferred Tax Assets and Liabilities	The primary components of deferred income tax assets and liabilities as of December 31, 2018 and 2017 were as follows: As of December 31, 2018 2017 Deferred tax assets: Inventories and related reserves $ 14,171 $ 17,287 Prepaid and accrued expenses 71,004 25,920 Property, plant and equipment 14,571 13,396 Intangible assets 27,122 22,050 Unrealized exchange loss 4,255 12,265 Net operating loss, interest expense, and other carryforwards 296,255 349,244 Pension liability and other 8,701 8,880 Share-based compensation 11,332 12,195 Other 10,151 7,028 Total deferred tax assets 457,562 468,265 Valuation allowance (157,043 ) (277,315 ) Net deferred tax asset 300,519 190,950 Deferred tax liabilities: Property, plant and equipment (15,795 ) (23,222 ) Intangible assets and goodwill (440,348 ) (428,028 ) Unrealized exchange gain (6,912 ) (6,031 ) Tax on undistributed earnings of subsidiaries (35,187 ) (38,894 ) Total deferred tax liabilities (498,242 ) (496,175 ) Net deferred tax liability $ (197,723 ) $ (305,225 )
Summary of Income Tax Contingencies	A reconciliation of the amount of unrecognized tax benefits is as follows: Balance as of December 31, 2015 $ 38,057 Increases related to prior year tax positions 6,390 Increases related to current year tax positions 8,462 Decreases related to lapse of applicable statute of limitations (256 ) Decreases related to settlements with tax authorities (6,755 ) Balance as of December 31, 2016 45,898 Increases related to prior year tax positions 7,968 Increases related to current year tax positions 14,585 Decreases related to lapse of applicable statute of limitations (1,356 ) Decreases related to settlements with tax authorities (7,211 ) Balance as of December 31, 2017 59,884 Increases related to prior year tax positions 14,609 Increases related to current year tax positions 15,676 Increases related to business combination 1,000 Decreases related to prior year tax positions (1,144 ) Decreases related to foreign currency exchange rate fluctuations (416 ) Balance as of December 31, 2018 $ 89,609
Summary of Income Tax Examinations	The table that follows presents the (income)/expense related to such interest and penalties recognized in the consolidated statements of operations during the years ended December 31, 2018 , 2017, and 2016, and the amount of interest and penalties recorded on the consolidated balance sheets as of December 31, 2018 and 2017: Statements of Operations Balance Sheets For the year ended December 31, As of December 31, (Dollars in millions) 2018 2017 2016 2018 2017 Interest $ (0.2 ) $ 0.2 $ 0.1 $ 0.4 $ 0.7 Penalties $ (0.2 ) $ (0.1 ) $ 0.1 $ 0.4 $ 0.5

Other, Net (Tables)

Other, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Schedule of other, net	Other, net consisted of the following for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Currency remeasurement (loss)/gain on net monetary assets (1) $ (18,905 ) $ 18,041 $ (10,621 ) Gain/(loss) on foreign currency forward contracts (2) 2,070 (15,618 ) (1,850 ) (Loss)/gain on commodity forward contracts (2) (8,481 ) 9,989 7,399 Loss on debt financing (3) (2,350 ) (2,670 ) — Net periodic benefit cost, excluding service cost (4) (3,585 ) (3,402 ) (192 ) Other 886 75 171 Other, net $ (30,365 ) $ 6,415 $ (5,093 ) __________________________________________ (1) Relates to the remeasurement of non-U.S. dollar denominated net monetary assets and liabilities into U.S. dollars. Refer to the Foreign Currency section of Note 2, "Significant Accounting Policies," for discussion. (2) Relates to changes in the fair value of derivative financial instruments not designated as cash flow hedges. Refer to Note 19, "Derivative Instruments and Hedging Activities," for a more detailed discussion. (3) Refer to Note 14, "Debt," for a more detailed discussion of our debt financing transactions. (4) On January 1, 2018, we adopted FASB ASU No. 2017-07, which requires the non-service cost components to be presented apart from the service cost component and outside of profit from operations. Refer to the Pension and Other Post-Retirement Benefits section of Note 2, "Significant Accounting Policies," and Note 13, "Pension and Other Post-Retirement Benefits," for additional details.

Net Income Per Share (Tables)

Net Income Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	For the years ended December 31, 2018 , 2017 , and 2016 , the weighted-average ordinary shares outstanding used to calculate basic and diluted net income per share were as follows: For the year ended December 31, (Shares in thousands) 2018 2017 2016 Basic weighted-average ordinary shares outstanding 168,570 171,165 170,709 Dilutive effect of stock options 822 616 489 Dilutive effect of unvested restricted securities 467 388 262 Diluted weighted-average ordinary shares outstanding 169,859 172,169 171,460
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	These potential ordinary shares are as follows: For the year ended December 31, (Shares in thousands) 2018 2017 2016 Anti-dilutive shares excluded 930 1,410 1,401 Contingently issuable shares excluded 687 871 606

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory	The components of inventories as of December 31, 2018 and 2017 were as follows: As of December 31, 2018 2017 Finished goods $ 187,095 $ 195,089 Work-in-process 104,405 92,678 Raw materials 200,819 158,362 Inventories $ 492,319 $ 446,129

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PP&E, net as of December 31, 2018 and 2017 consisted of the following: As of December 31, 2018 2017 Land $ 22,021 $ 23,077 Buildings and improvements 259,182 250,475 Machinery and equipment 1,220,285 1,132,461 Total PP&E 1,501,488 1,406,013 Accumulated depreciation (714,310 ) (655,964 ) PP&E, net $ 787,178 $ 750,049
Schedule of Capital Leased Assets	PP&E, net as of December 31, 2018 and 2017 included the following assets under capital leases: As of December 31, 2018 2017 Assets under capital leases in PP&E $ 49,714 $ 45,249 Accumulated depreciation (22,508 ) (20,631 ) Assets under capital leases in PP&E, net $ 27,206 $ 24,618

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table outlines the changes in goodwill by segment for the year ended December 31, 2018. There were no acquisitions or other changes to goodwill during the year ended December 31, 2017. Performance Sensing Sensing Solutions Total Gross Accumulated Net Gross Accumulated Net Gross Accumulated Net Balance as of December 31, 2016 and 2017 $ 2,148,135 $ — $ 2,148,135 $ 875,795 $ (18,466 ) $ 857,329 $ 3,023,930 $ (18,466 ) $ 3,005,464 Divestiture of Valves Business (38,800 ) — (38,800 ) — — — (38,800 ) — (38,800 ) Acquisition of GIGAVAC 46,298 — 46,298 68,340 — 68,340 114,638 — 114,638 Balance as of December 31, 2018 $ 2,155,633 $ — $ 2,155,633 $ 944,135 $ (18,466 ) $ 925,669 $ 3,099,768 $ (18,466 ) $ 3,081,302
Schedule of Finite-Lived Intangible Assets by Major Class	The following table outlines the components of definite-lived intangible assets as of December 31, 2018 and 2017 : As of December 31, Weighted- 2018 2017 Gross Accumulated Accumulated Net Gross Accumulated Accumulated Net Completed technologies 14 $ 759,008 $ (475,295 ) $ (2,430 ) $ 281,283 $ 727,968 $ (418,987 ) $ (2,430 ) $ 306,551 Customer relationships 11 1,825,698 (1,352,189 ) (12,144 ) 461,365 1,771,198 (1,287,581 ) (12,144 ) 471,473 Non-compete agreements 8 23,400 (23,400 ) — — 23,400 (23,400 ) — — Tradenames 21 66,154 (13,468 ) — 52,686 50,754 (11,094 ) — 39,660 Capitalized software and other (1) 7 65,896 (32,509 ) — 33,387 59,909 (25,939 ) — 33,970 Total 12 $ 2,740,156 $ (1,896,861 ) $ (14,574 ) $ 828,721 $ 2,633,229 $ (1,767,001 ) $ (14,574 ) $ 851,654 __________________________________________ (1) During the years ended December 31, 2018 and 2017, we wrote-off approximately $0.2 million and $1.1 million , respectively, of fully-amortized capitalized software that was not in use.
Schedule of Amortization Expense	The following table outlines amortization of intangible assets for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Acquisition-related definite-lived intangible assets $ 132,235 $ 153,729 $ 194,208 Capitalized software 7,091 7,321 7,290 Amortization of intangible assets $ 139,326 $ 161,050 $ 201,498
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The table below presents estimated amortization of intangible assets for each of the next five years: For the year ended December 31, 2019 $ 142,198 2020 $ 127,046 2021 $ 110,203 2022 $ 95,029 2023 $ 81,055

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Accrued expenses and other current liabilities [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities as of December 31, 2018 and 2017 consisted of the following: As of December 31, 2018 2017 Accrued compensation and benefits $ 68,936 $ 89,816 Accrued interest 40,550 36,919 Foreign currency and commodity forward contracts 7,710 35,094 Accrued severance 6,591 4,184 Current portion of pension and post-retirement benefit obligations 3,176 3,342 Other accrued expenses and current liabilities 91,167 90,205 Accrued expenses and other current liabilities $ 218,130 $ 259,560

Pension and Other Post-Retire_2

Pension and Other Post-Retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Schedule of Net Benefit Costs	The components of net periodic benefit cost/(credit) associated with our defined benefit and retiree healthcare plans for the years ended December 31, 2018 , 2017 , and 2016 were as follows: For the year ended December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Service cost $ — $ 50 $ 3,122 $ — $ 74 $ 2,582 $ — $ 83 $ 2,716 Interest cost 1,473 272 1,310 1,604 325 1,053 1,461 364 1,179 Expected return on plan assets (1,710 ) — (929 ) (2,151 ) — (905 ) (2,684 ) — (952 ) Amortization of net loss 1,080 5 407 1,149 54 287 707 143 488 Amortization of net prior service (credit)/cost — (1,728 ) 6 — (1,335 ) (4 ) — (1,335 ) (20 ) Loss on settlement 1,047 — 1,461 3,225 — 100 1,293 — 34 Loss/(gain) on curtailment — — 891 — — — — — (486 ) Net periodic benefit cost/(credit) $ 1,890 $ (1,401 ) $ 6,268 $ 3,827 $ (882 ) $ 3,113 $ 777 $ (745 ) $ 2,959
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]	The table below presents the effects of this adjustment. For the year ended December 31, 2017 2016 As Reported Adjustment As Adjusted As Reported Adjustment As Adjusted Net revenue $ 3,306,733 $ — $ 3,306,733 $ 3,202,288 $ — $ 3,202,288 Operating costs and expenses: Cost of revenue 2,141,308 (2,410 ) 2,138,898 2,084,261 (102 ) 2,084,159 Research and development 130,204 (77 ) 130,127 126,665 (9 ) 126,656 Selling, general and administrative 302,811 (915 ) 301,896 293,587 (81 ) 293,506 Amortization of intangible assets 161,050 — 161,050 201,498 — 201,498 Restructuring and other charges, net 18,975 — 18,975 4,113 — 4,113 Total operating costs and expenses 2,754,348 (3,402 ) 2,750,946 2,710,124 (192 ) 2,709,932 Profit from operations 552,385 3,402 555,787 492,164 192 492,356 Interest expense, net (159,761 ) — (159,761 ) (165,818 ) — (165,818 ) Other, net 9,817 (3,402 ) 6,415 (4,901 ) (192 ) (5,093 ) Income before taxes $ 402,441 $ — $ 402,441 $ 321,445 $ — $ 321,445
Schedule of Changes in Fair Value of Plan Assets and Projected Benefit Obligations	The following table outlines the rollforward of the benefit obligation and plan assets for the defined benefit and retiree healthcare benefit plans for the years ended December 31, 2018 and 2017 : For the year ended December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Change in benefit obligation: Beginning balance $ 48,615 $ 9,692 $ 67,413 $ 57,679 $ 10,296 $ 59,056 Service cost — 50 3,122 — 74 2,582 Interest cost 1,473 272 1,310 1,604 325 1,053 Plan participants’ contributions — 475 60 — 519 120 Plan amendment — (3,243 ) — — — (6 ) Actuarial (gain)/loss (519 ) (124 ) 2,777 2,936 (197 ) 2,692 Curtailments — — 931 — — — Benefits paid (4,400 ) (1,105 ) (6,262 ) (13,604 ) (1,325 ) (2,572 ) Divestiture — — (3,310 ) — — — Foreign currency remeasurement — — (350 ) — — 4,488 Ending balance $ 45,169 $ 6,017 $ 65,691 $ 48,615 $ 9,692 $ 67,413 Change in plan assets: Beginning balance $ 41,101 $ — $ 41,222 $ 52,042 $ — $ 37,361 Actual return on plan assets (811 ) — (1,308 ) 2,319 — 1,241 Employer contributions 3,985 630 5,992 344 1,325 2,586 Plan participants’ contributions — 475 60 — — 120 Benefits paid (4,400 ) (1,105 ) (6,262 ) (13,604 ) (1,325 ) (2,572 ) Foreign currency remeasurement — — 164 — — 2,486 Ending balance $ 39,875 $ — $ 39,868 $ 41,101 $ — $ 41,222 Funded status at end of year $ (5,294 ) $ (6,017 ) $ (25,823 ) $ (7,514 ) $ (9,692 ) $ (26,191 ) Accumulated benefit obligation at end of year $ 45,169 NA $ 59,948 $ 48,615 NA $ 60,588
Schedule of Amounts Recognized in Balance Sheet	The following table outlines the funded status amounts recognized in the consolidated balance sheets as of December 31, 2018 and 2017 : As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Noncurrent assets $ — $ — $ — $ — $ — $ — Current liabilities (595 ) (1,116 ) (1,465 ) (638 ) (1,210 ) (1,494 ) Noncurrent liabilities (4,699 ) (4,901 ) (24,358 ) (6,876 ) (8,482 ) (24,697 ) Funded status $ (5,294 ) $ (6,017 ) $ (25,823 ) $ (7,514 ) $ (9,692 ) $ (26,191 )
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year	Balances recognized within accumulated other comprehensive loss that have not been recognized as components of net periodic benefit cost, net of tax, as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Net prior service credit $ — $ (692 ) $ (10 ) $ — $ 823 $ (220 ) $ — $ (512 ) $ (218 ) Net loss $ 20,759 $ 880 $ 14,425 $ 20,884 $ 1,009 $ 12,489 $ 22,490 $ 1,260 $ 11,070
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets	Information for plans with an accumulated benefit obligation in excess of plan assets as of December 31, 2018 and 2017 is as follows: As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Projected benefit obligation $ 45,169 $ 65,691 $ 48,615 $ 31,680 Accumulated benefit obligation $ 45,169 $ 59,948 $ 48,615 $ 26,609 Plan assets $ 39,875 $ 39,868 $ 41,101 $ 5,759
Schedule of Accumulated and Projected Benefit Obligations	Information for plans with a projected benefit obligation in excess of plan assets as of December 31, 2018 and 2017 is as follows: As of December 31, 2018 2017 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Projected benefit obligation $ 51,186 $ 65,691 $ 58,307 $ 63,153 Plan assets $ 39,875 $ 39,868 $ 41,101 $ 36,990
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)	Other changes in plan assets and benefit obligations, net of tax, recognized in other comprehensive income/(loss) for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans U.S. Plans Non-U.S. Plans Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Defined Benefit Retiree Healthcare Defined Benefit Net loss/(gain) $ 2,002 $ (124 ) $ 3,669 $ 2,768 $ (197 ) $ 1,618 $ 5,368 $ (984 ) $ 2,505 Amortization of net loss (1,080 ) (5 ) (298 ) (1,149 ) (54 ) (130 ) (707 ) (143 ) (436 ) Amortization of net prior service credit/(cost) — 1,728 (4 ) — 1,335 3 — 1,335 15 Divestiture — — (228 ) — — — — — — Plan amendment — (3,243 ) — — — (5 ) — — (73 ) Settlement effect (1,047 ) — (1,023 ) (3,225 ) — (69 ) (1,293 ) — (67 ) Curtailment effect — — 30 — — — — — (1,272 ) Total in other comprehensive (income)/loss $ (125 ) $ (1,644 ) $ 2,146 $ (1,606 ) $ 1,084 $ 1,417 $ 3,368 $ 208 $ 672
Schedule of Assumptions Used	Weighted-average assumptions used to calculate the projected benefit obligations of our defined benefit and retiree healthcare benefit plans as of December 31, 2018 and 2017 are as follows: As of December 31, 2018 2017 Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare U.S. assumed discount rate 3.79 % 3.90 % 3.00 % 3.10 % Non-U.S. assumed discount rate 2.17 % NA 2.07 % NA Non-U.S. average long-term pay progression 2.66 % NA 2.66 % NA Weighted-average assumptions used to calculate the net periodic benefit cost of our defined benefit and retiree healthcare benefit plans for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare Defined Benefit Retiree Healthcare U.S. assumed discount rate 3.45 % 3.10 % 3.20 % 3.30 % 3.10 % 3.50 % Non-U.S. assumed discount rate 5.87 % NA 3.90 % NA 3.83 % NA U.S. average long-term rate of return on plan assets 4.57 % NA 4.50 % NA 5.00 % NA Non-U.S. average long-term rate of return on plan assets 2.26 % NA 2.29 % NA 2.60 % NA Non-U.S. average long-term pay progression 4.82 % NA 3.75 % NA 3.78 % NA
Schedule of Health Care Cost Trend Rates	Assumed healthcare cost trend rates for the U.S. retiree healthcare benefit plan as of December 31, 2018 , 2017 , and 2016 are as follows: As of December 31, 2018 2017 2016 Assumed healthcare trend rate for next year: Attributed to less than age 65 6.60 % 6.90 % 7.10 % Attributed to age 65 or greater 7.10 % 7.50 % 7.80 % Ultimate trend rate 4.50 % 4.50 % 4.50 % Year in which ultimate trend rate is reached: Attributed to less than age 65 2038 2038 2038 Attributed to age 65 or greater 2038 2038 2038
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A one percentage point change in the assumed healthcare trend rates for the year ended December 31, 2018 would have the following effect: One Percentage Point: Increase Decrease Effect on total service and interest cost components $ 6 $ (5 ) Effect on post-retirement benefit obligations $ 200 $ (248 )
Schedule of Expected Benefit Payments	The table below outlines the benefits expected to be paid to participants in each of the following years, taking into consideration expected future service, as appropriate. The majority of the payments will be paid from plan assets and not company assets. Expected Benefit Payments For the year ended December 31, U.S. Defined Benefit U.S. Retiree Healthcare Non-U.S. Defined Benefit 2019 $ 6,466 $ 1,116 $ 2,959 2020 $ 5,826 $ 738 $ 3,232 2021 $ 5,313 $ 696 $ 3,228 2022 $ 4,128 $ 634 $ 3,829 2023 $ 3,677 $ 523 $ 3,528 2024 - 2027 $ 10,498 $ 1,905 $ 21,700
Schedule of Allocation of Plan Assets	The following table presents information about the plan’s target and actual asset allocation, as of December 31, 2018 : Target Allocation Actual Allocation as of December 31, 2018 U.S. large cap equity 7 % 7 % U.S. small / mid cap equity 2 % 2 % Globally managed volatility fund 3 % 3 % International (non-U.S.) equity 4 % 4 % Fixed income (U.S. investment and non-investment grade) 68 % 67 % High-yield fixed income 2 % 2 % International (non-U.S.) fixed income 1 % 1 % Money market funds 13 % 13 % The following table presents information about the plan’s target asset allocation, as well as the actual allocation, as of December 31, 2018 : Target Allocation Actual Allocation as of December 31, 2018 Equity securities 10%-90% 25 % Fixed income securities, cash, and cash equivalents 10%-90% 75 %
Schedule of Defined Benefit Plans Disclosures	The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Insurance policies $ — $ — $ 8,897 $ 8,897 $ — $ — $ 9,059 $ 9,059 Total plan assets $ — $ — $ 8,897 $ 8,897 $ — $ — $ 9,059 $ 9,059 The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total U.S. equity $ 2,212 $ — $ — $ 2,212 $ 2,461 $ — $ — $ 2,461 International (non-U.S.) equity 5,158 — — 5,158 6,567 — — 6,567 Total equity securities 7,370 — — 7,370 9,028 — — 9,028 U.S. fixed income 3,076 269 — 3,345 2,968 268 — 3,236 International (non-U.S.) fixed income 8,811 — — 8,811 11,046 — — 11,046 Total fixed income securities 11,887 269 — 12,156 14,014 268 — 14,282 Cash and cash equivalents 10,339 — — 10,339 7,921 — — 7,921 Total plan assets $ 29,596 $ 269 $ — $ 29,865 $ 30,963 $ 268 $ — $ 31,231 The following table presents information about the plan assets measured at fair value as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total U.S. large cap equity $ 2,960 $ — $ — $ 2,960 $ 3,288 $ — $ — $ 3,288 U.S. small / mid cap equity 833 — — 833 942 — — 942 Global managed volatility fund 1,214 — — 1,214 1,288 — — 1,288 International (non-U.S.) equity 1,493 — — 1,493 1,788 — — 1,788 Total equity mutual funds 6,500 — — 6,500 7,306 — — 7,306 Fixed income (U.S. investment grade) 26,884 — — 26,884 27,507 — — 27,507 High-yield fixed income 792 — — 792 821 — — 821 International (non-U.S.) fixed income 402 — — 402 398 — — 398 Total fixed income mutual funds 28,078 — — 28,078 28,726 — — 28,726 Money market funds 5,297 — — 5,297 5,069 — — 5,069 Total plan assets $ 39,875 $ — $ — $ 39,875 $ 41,101 $ — $ — $ 41,101
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets	The following table presents a rollforward of the Level 3 assets in our Netherlands' defined plan for the years ended December 31, 2018 and 2017 : Insurance Policies Balance as of December 31, 2016 $ 8,014 Actual return on plan assets still held at reporting date (597 ) Purchases, sales, settlements, and exchange rate changes 1,642 Balance as of December 31, 2017 9,059 Actual return on plan assets still held at reporting date 177 Purchases, sales, settlements, and exchange rate changes (339 ) Balance as of December 31, 2018 $ 8,897

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	ong-term debt, net and capital lease and other financing obligations as of December 31, 2018 and 2017 consisted of the following: As of December 31, Maturity Date 2018 2017 Term Loan October 14, 2021 $ 917,794 $ 927,794 4.875% Senior Notes October 15, 2023 500,000 500,000 5.625% Senior Notes November 1, 2024 400,000 400,000 5.0% Senior Notes October 1, 2025 700,000 700,000 6.25% Senior Notes February 15, 2026 750,000 750,000 Less: discount (15,169 ) (14,424 ) Less: deferred financing costs (23,159 ) (27,758 ) Less: current portion (9,704 ) (9,802 ) Long-term debt, net $ 3,219,762 $ 3,225,810 Capital lease and other financing obligations $ 35,475 $ 34,657 Less: current portion (4,857 ) (5,918 ) Capital lease and other financing obligations, less current portion $ 30,618 $ 28,739
Debt Instrument Redemption	Thereafter, we may redeem the 6.25% Senior Notes, in whole or in part, at the following prices (plus accrued and unpaid interest to the date of redemption, if any): Period beginning February 15, Price 2021 103.125% 2022 102.083% 2023 101.042% 2024 and thereafter 100.000%
Schedule of Maturities of Long-term Debt	The following table presents the remaining mandatory principal repayments of long-term debt, excluding capital lease payments, other financing obligations, and discretionary repurchases of debt, in each of the years ended December 31, 2019 through 2023 and thereafter. For the year ended December 31, Aggregate Maturities 2019 $ 9,704 2020 9,901 2021 898,189 2022 — 2023 500,000 Thereafter 1,850,000 Total long-term debt principal payments $ 3,267,794

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Payments for Leases and Other Financing Obligations	Future minimum payments for capital leases, other financing obligations, and non-cancelable operating leases in effect as of December 31, 2018 are as follows: Future Minimum Payments Capital Leases Other Financing Obligations Operating Leases Total For the year ending December 31, 2019 $ 4,672 $ 2,541 $ 16,621 $ 23,834 2020 4,540 459 12,319 17,318 2021 4,062 178 9,688 13,928 2022 3,712 — 7,707 11,419 2023 3,771 — 6,471 10,242 2024 and thereafter 36,327 — 26,580 62,907 Net minimum rentals 57,084 3,178 79,386 139,648 Less: interest portion (24,395 ) (392 ) — (24,787 ) Present value of future minimum rentals $ 32,689 $ 2,786 $ 79,386 $ 114,861
Long-term Purchase Commitment	As of December 31, 2018 , we had the following purchase commitments: Purchase Commitments For the year ending December 31, 2019 $ 23,983 2020 24,202 2021 18,525 2022 8,065 2023 4,952 2024 and thereafter 39 Total purchase commitments $ 79,766

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive loss were as follows: Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Accumulated Other Comprehensive Loss Balance as of December 31, 2015 $ 3,852 $ (29,842 ) $ (25,990 ) Pre-tax current period change (5,106 ) (4,934 ) (10,040 ) Tax effect 1,277 686 1,963 Balance as of December 31, 2016 23 (34,090 ) (34,067 ) Pre-tax current period change (37,603 ) (1,445 ) (39,048 ) Tax effect 9,401 550 9,951 Balance as of December 31, 2017 (28,179 ) (34,985 ) (63,164 ) Pre-tax current period change 49,817 (1,183 ) 48,634 Tax effect (12,454 ) 806 (11,648 ) Balance as of December 31, 2018 $ 9,184 $ (35,362 ) $ (26,178 )
Comprehensive Income (Loss)	The details of the components of other comprehensive income/(loss), net of tax, for the years ended December 31, 2018 , 2017 , and 2016 are as follows: For the year ended December 31, 2018 2017 2016 Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Cash Flow Hedges Defined Benefit and Retiree Healthcare Plans Total Other comprehensive income/(loss) before reclassifications $ 26,859 $ (2,120 ) $ 24,739 $ (39,387 ) $ (4,184 ) $ (43,571 ) $ (6,356 ) $ (6,816 ) $ (13,172 ) Amounts reclassified from accumulated other comprehensive loss 10,504 1,743 12,247 11,185 3,289 14,474 2,527 2,568 5,095 Other comprehensive income/(loss) $ 37,363 $ (377 ) $ 36,986 $ (28,202 ) $ (895 ) $ (29,097 ) $ (3,829 ) $ (4,248 ) $ (8,077 )
Reclassification out of Accumulated Other Comprehensive Income	The details of the amounts reclassified from accumulated other comprehensive loss for the years ended December 31, 2018 , 2017 , and 2016 are as follows: Amount of Loss/(Gain) Reclassified from Accumulated Other Comprehensive Loss For the year ended December 31, Affected Line in Consolidated Statements of Operations 2018 2017 2016 Derivative instruments designated and qualifying as cash flow hedges: Foreign currency forward contracts $ 18,072 $ 916 $ (17,720 ) Net revenue (1) Foreign currency forward contracts (5,442 ) 13,997 21,089 Cost of revenue (1) Foreign currency forward contracts 1,376 — — Other, net (1) Total, before taxes 14,006 14,913 3,369 Income before taxes Income tax effect (3,502 ) (3,728 ) (842 ) (Benefit from)/provision for income taxes Total, net of taxes $ 10,504 $ 11,185 $ 2,527 Net income Defined benefit and retiree healthcare plans $ 1,993 $ 3,476 $ 2,975 Other, net (2) Defined benefit and retiree healthcare plans 228 — — Restructuring and other charges, net (3) Total, before taxes 2,221 3,476 2,975 Income before taxes Income tax effect (478 ) (187 ) (407 ) (Benefit from)/provision for income taxes Total, net of taxes $ 1,743 $ 3,289 $ 2,568 Net income __________________________________________ (1) See Note 19, "Derivative Instruments and Hedging Activities," for details on amounts to be reclassified in the future from accumulated other comprehensive loss. (2) See Note 13, "Pension and Other Post-Retirement Benefits," for details of net periodic benefit cost. (3) Amount represents an equity component of the Valves Business. Refer to Note 5, "Restructuring and Other Charges, Net," and Note 17, "Acquisitions and Divestitures," for information related to the sale of the Valves Business.

Acquisitions and Divestitures (

Acquisitions and Divestitures (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed: Net working capital, excluding cash $ 16,980 Property, plant and equipment 4,384 Goodwill 114,638 Other intangible assets 122,742 Other assets 63 Deferred income tax liabilities (27,000 ) Other long-term liabilities (1,000 ) Fair value of net assets acquired, excluding cash and cash equivalents 230,807 Cash and cash equivalents 359 Fair value of net assets acquired $ 231,166
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The following table presents the acquired intangible assets, their estimated fair values, and weighted average lives: Acquisition Date Fair Value Weighted-Average Lives (years) Acquired definite-lived intangible assets: Customer relationships $ 74,500 10 Completed technologies 31,040 13 Tradenames 15,400 15 Other 1,802 6 Total definite-lived intangible assets acquired $ 122,742 12

Fair Value Measures (Tables)

Fair Value Measures (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The fair values of our assets and liabilities measured at fair value on a recurring basis as of as of December 31, 2018 and 2017 are as shown in the below table. All fair value measures presented are categorized in Level 2 of the fair value hierarchy. As of December 31, 2018 2017 Assets measured at fair value: Foreign currency forward contracts $ 17,871 $ 3,955 Commodity forward contracts 831 6,458 Total assets measured at fair value $ 18,702 $ 10,413 Liabilities measured at fair value: Foreign currency forward contracts $ 5,165 $ 40,969 Commodity forward contracts 4,137 1,104 Total liabilities measured at fair value $ 9,302 $ 42,073
Fair Value, by Balance Sheet Grouping	The following table presents the carrying values and fair values of financial instruments not measured at fair value in the consolidated balance sheets as of December 31, 2018 and 2017 . All fair value measures presented are categorized within Level 2 of the fair value hierarchy. As of December 31, 2018 2017 Carrying Value (1) Fair Value Carrying Value (1) Fair Value Term Loan $ 917,794 $ 904,027 $ 927,794 $ 930,114 4.875% Senior Notes $ 500,000 $ 491,875 $ 500,000 $ 521,875 5.625% Senior Notes $ 400,000 $ 400,500 $ 400,000 $ 439,000 5.0% Senior Notes $ 700,000 $ 660,625 $ 700,000 $ 741,125 6.25% Senior Notes $ 750,000 $ 751,875 $ 750,000 $ 813,750 __________________________________________ (1) Excluding any related debt discounts and deferred financing costs.

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	As of December 31, 2018 , we had the following outstanding commodity forward contracts, none of which were designated as derivatives in qualifying hedging relationships: Notional Remaining Contracted Periods Weighted-Average Strike Price Per Unit Silver 1,093,907 troy oz. January 2019 - November 2020 $ 16.42 Gold 9,859 troy oz. January 2019 - November 2020 $ 1,307.90 Nickel 287,681 pounds January 2019 - November 2020 $ 5.75 Aluminum 2,350,172 pounds January 2019 - November 2020 $ 0.97 Copper 2,904,061 pounds January 2019 - November 2020 $ 3.17 Platinum 9,095 troy oz. January 2019 - November 2020 $ 912.29 Palladium 1,001 troy oz. January 2019 - November 2020 $ 966.21 As of December 31, 2018 , we had the following outstanding foreign currency forward contracts: Notional Effective Date Maturity Date Index Weighted- Average Strike Rate Hedge Designation (1) 44.0 EUR December 27, 2018 January 31, 2019 Euro to U.S. Dollar Exchange Rate 1.14 USD None 341.5 EUR Various from February 2017 to December 2018 Various from January 2019 to November 2020 Euro to U.S. Dollar Exchange Rate 1.22 USD Cash flow hedge 285.0 CNY December 26, 2018 January 31, 2019 U.S. Dollar to Chinese Renminbi Exchange Rate 6.91 CNY None 31,275.0 KRW Various from February 2017 to December 2018 Various from January 2019 to November 2020 U.S. Dollar to Korean Won Exchange Rate 1,093.49 KRW Cash flow hedge 26.8 MYR December 26, 2018 January 31, 2019 U.S. Dollar to Malaysian Ringgit Exchange Rate 4.18 MYR None 195.0 MXN December 27, 2018 January 31, 2019 U.S. Dollar to Mexican Peso Exchange Rate 19.86 MXN None 2,713.2 MXN Various from February 2017 to December 2018 Various from January 2019 to November 2020 U.S. Dollar to Mexican Peso Exchange Rate 20.72 MXN Cash flow hedge 48.5 GBP Various from February 2017 to December 2018 Various from January 2019 to November 2020 British Pound Sterling to U.S. Dollar Exchange Rate 1.34 USD Cash flow hedge ______________________________________ (1) Derivative financial instruments not designated as hedges are used to manage our exposure to currency exchange rate risk. They are intended to preserve the economic value and not for trading or speculative purposes.
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	The following table presents the fair values of our derivative financial instruments and their classification in the consolidated balance sheets as of December 31, 2018 and 2017 : Asset Derivatives Liability Derivatives Balance Sheet Location As of December 31, Balance Sheet Location As of December 31, 2018 2017 2018 2017 Derivatives designated as hedging instruments: Foreign currency forward contracts Prepaid expenses and other current assets $ 14,608 $ 3,576 Accrued expenses and other current liabilities $ 3,615 $ 32,806 Foreign currency forward contracts Other assets 3,168 373 Other long-term liabilities 1,134 6,881 Total $ 17,776 $ 3,949 $ 4,749 $ 39,687 Derivatives not designated as hedging instruments: Commodity forward contracts Prepaid expenses and other current assets $ 524 $ 5,403 Accrued expenses and other current liabilities $ 3,679 $ 1,006 Commodity forward contracts Other assets 307 1,055 Other long-term liabilities 458 98 Foreign currency forward contracts Prepaid expenses and other current assets 95 6 Accrued expenses and other current liabilities 416 1,282 Total $ 926 $ 6,464 $ 4,553 $ 2,386
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following tables present the effect of our derivative financial instruments on the consolidated statements of operations and the consolidated statements of comprehensive income for the years ended December 31, 2018 and 2017 : Derivatives designated as hedging instruments Amount of Deferred Gain/(Loss) Recognized in Other Comprehensive Income/(Loss) Location of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income Amount of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income For the year ended December 31, For the year ended December 31, 2018 2017 2018 2017 Foreign currency forward contracts $ 30,752 $ (68,071 ) Net revenue $ (18,072 ) $ (916 ) Foreign currency forward contracts $ 5,059 $ 15,555 Cost of revenue $ 5,442 $ (13,997 ) Foreign currency forward contracts $ — $ — Other, net $ (1,376 ) $ — Derivatives not designated as hedging instruments Amount of (Loss)/Gain Recognized in Net Income Location of Gain/(Loss) For the year ended December 31, 2018 2017 Commodity forward contracts $ (8,481 ) $ 9,989 Other, net Foreign currency forward contracts $ 3,446 $ (15,618 ) Other, net

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following table presents net revenue and Segment profit for the reported segments and other operating results not allocated to the reported segments for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Net revenue: Performance Sensing $ 2,627,651 $ 2,460,600 $ 2,385,380 Sensing Solutions 893,976 846,133 816,908 Total net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 Segment profit (as defined above): Performance Sensing $ 712,682 $ 664,186 $ 615,526 Sensing Solutions 293,009 277,450 261,914 Total segment profit 1,005,691 941,636 877,440 Corporate and other (203,764 ) (205,824 ) (179,473 ) Amortization of intangible assets (139,326 ) (161,050 ) (201,498 ) Restructuring and other charges, net 47,818 (18,975 ) (4,113 ) Profit from operations 710,419 555,787 492,356 Interest expense, net (153,679 ) (159,761 ) (165,818 ) Other, net (30,365 ) 6,415 (5,093 ) Income before taxes $ 526,375 $ 402,441 $ 321,445
Revenue from External Customers by Products and Services	The following table presents net revenue by product category for the years ended December 31, 2018 , 2017 , and 2016 (prior periods have been recast to reflect current period presentation): Performance Sensing Sensing Solutions For the year ended December 31, 2018 2017 2016 Net revenue: Sensors X X $ 2,755,280 $ 2,542,863 $ 2,455,476 Controls X X 508,745 497,853 486,207 Other X X 257,602 266,017 260,605 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288
Schedule of Depreciation and Amortization, by Segment	The following table presents depreciation and amortization expense for our reportable segments for the years ended December 31, 2018 , 2017 and 2016 : For the year ended December 31, 2018 2017 2016 Depreciation and amortization: Performance Sensing $ 72,067 $ 68,910 $ 68,837 Sensing Solutions 16,798 17,179 14,095 Corporate and other (1) 156,475 184,282 225,469 Total depreciation and amortization $ 245,340 $ 270,371 $ 308,401 __________________________________________ (1) Included within Corporate and other is depreciation and amortization expense associated with the fair value step-up recognized in prior acquisitions and accelerated depreciation recorded in connection with restructuring actions. We do not allocate the additional depreciation and amortization expense associated with the step-up in the fair value of the PP&E and intangible assets associated with these acquisitions or accelerated depreciation related to restructuring actions to our segments. This treatment is consistent with the financial information reviewed by our chief operating decision maker.
Reconciliation of Assets from Segment to Consolidated	The following table presents total assets for our reportable segments as of December 31, 2018 and 2017 : As of December 31, 2018 2017 Assets: Performance Sensing $ 1,490,310 $ 1,396,565 Sensing Solutions 468,131 424,237 Corporate and other (1) 4,839,246 4,820,723 Total assets $ 6,797,687 $ 6,641,525 __________________________________________ (1) Included within Corporate and other as of December 31, 2018 and 2017 is $3,081.3 million and $3,005.5 million , respectively, of goodwill, as well as $897.2 million and $920.1 million , respectively, of other intangible assets, net, $729.8 million and $753.1 million , respectively, of cash and cash equivalents, and $36.5 million and $36.1 million , respectively, of PP&E, net. This treatment is consistent with the financial information reviewed by our chief operating decision maker.
Schedule of Capital Expenditures by Segment	The following table presents additions to property, plant and equipment and capitalized software for our reportable segments for the years ended December 31, 2018 , 2017 , and 2016 : For the year ended December 31, 2018 2017 2016 Additions to property, plant and equipment and capitalized software: Performance Sensing $ 130,234 $ 106,520 $ 99,299 Sensing Solutions 12,492 13,980 11,947 Corporate and other 17,061 24,084 18,971 Total additions to property, plant and equipment and capitalized software $ 159,787 $ 144,584 $ 130,217
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area	The following tables present net revenue by geographic area and by significant country for the years ended December 31, 2018 , 2017 , and 2016 . In these tables, net revenue is aggregated based on an internal methodology that considers both the location of our subsidiaries and the primary location of each subsidiary's customers. For the year ended December 31, 2018 2017 2016 Net revenue: Americas $ 1,480,567 $ 1,367,113 $ 1,367,860 Asia and rest of world 1,012,526 903,118 810,094 Europe 1,028,534 1,036,502 1,024,334 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288 For the year ended December 31, 2018 2017 2016 Net revenue: United States $ 1,360,590 $ 1,276,304 $ 1,322,206 Netherlands 585,036 571,735 550,937 China 560,938 478,713 412,460 Korea 188,114 184,101 182,464 United Kingdom 163,963 174,376 171,206 All other 662,986 621,504 563,015 Net revenue $ 3,521,627 $ 3,306,733 $ 3,202,288
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country	The following tables present PP&E, net, by geographic area and by significant country as of December 31, 2018 and 2017 . In these tables, PP&E, net is aggregated based on the location of our subsidiaries. As of December 31, 2018 2017 PP&E, net: Americas $ 292,625 $ 296,863 Asia 309,542 266,524 Europe 185,011 186,662 PP&E, net $ 787,178 $ 750,049 As of December 31, 2018 2017 PP&E, net: United States $ 83,664 $ 95,603 China 239,315 211,566 Mexico 204,552 196,813 Bulgaria 119,477 97,562 United Kingdom 51,404 63,310 Malaysia 65,688 50,783 All other 23,078 34,412 PP&E, net $ 787,178 $ 750,049

Unaudited Quarterly Data (Table

Unaudited Quarterly Data (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedules of Unaudited Quarterly Data	The table below presents expenses recorded related to the Merger in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ — $ — $ 1,766 $ 2,352 2017 $ 2,059 $ 3,518 $ 1,020 $ — A summary of the unaudited quarterly results of operations for the years ended December 31, 2018 and 2017 is as follows: For the three months ended December 31, 2018 September 30, 2018 June 30, 2018 March 31, 2018 Net revenue $ 847,922 $ 873,552 $ 913,860 $ 886,293 Gross profit $ 304,359 $ 315,218 $ 331,351 $ 303,836 Net income $ 254,099 $ 149,118 $ 105,288 $ 90,490 Basic net income per share $ 1.55 $ 0.89 $ 0.61 $ 0.53 Diluted net income per share $ 1.54 $ 0.88 $ 0.61 $ 0.52 For the three months ended December 31, 2017 September 30, 2017 June 30, 2017 March 31, 2017 Net revenue $ 840,534 $ 819,054 $ 839,874 $ 807,271 Gross profit (1) $ 301,799 $ 291,815 $ 299,369 $ 274,852 Net income $ 169,129 $ 88,035 $ 79,457 $ 71,736 Basic net income per share (2) $ 0.99 $ 0.51 $ 0.46 $ 0.42 Diluted net income per share $ 0.98 $ 0.51 $ 0.46 $ 0.42 __________________________________________ (1) On January 1, 2018, we adopted FASB ASU No. 2017-07, which requires the service cost component of net periodic benefit cost to be presented separately on the consolidated statements of operations from the other components of net periodic benefit cost. Accordingly, a portion of cost of revenue (a component of Gross profit) has been recast to other, net for each quarter in the year ended December 31, 2017. Refer to Note 13, "Pension and Other Post-Retirement Benefits," for additional details. (2) The sum of basic net income per share for the four quarters does not equal the full year basic net income per share due to rounding. The below table presents gains/(losses) recognized related to these contracts in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ 373 $ (4,233 ) $ (1,426 ) $ (3,195 ) 2017 $ 3,550 $ 2,956 $ (1,957 ) $ 5,440 The below table presents charges/(gains) recorded to restructuring and other charges, net in the periods presented: For the three months ended December 31, September 30, June 30, March 31, 2018 $ 870 $ (52,698 ) $ 244 $ 3,766 2017 $ 207 $ 1,329 $ 6,389 $ 11,050

Business Description and Basi_2

Business Description and Basis of Presentation (Details)	12 Months Ended
	Dec. 31, 2018segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	2

Significant Accounting Polici_4

Significant Accounting Policies - Share-Based Compensation (Details)	12 Months Ended
	Dec. 31, 2018
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%

Significant Accounting Polici_5

Significant Accounting Policies - Financial Instruments (Details)	12 Months Ended
	Dec. 31, 2018
Largest Customer | Customer Concentration Risk | Net revenue
Concentration Risk [Line Items]
Percent of net revenue	8.00%

Significant Accounting Polici_6

Significant Accounting Policies - Goodwill and Other Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2018reporting_unit
Accounting Policies [Abstract]
Number of reporting units	6

Significant Accounting Polici_7

Significant Accounting Policies - Property, Plant and Equipment and Other Capitalized Costs (Details)	12 Months Ended
	Dec. 31, 2018
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life (in years)	2 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life (in years)	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life (in years)	2 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life (in years)	15 years

Significant Accounting Polici_8

Significant Accounting Policies - Recently Issued Accounting Standards Adopted In The Current Period (Details) $ in Thousands	Dec. 31, 2018USD ($)
Investment [Line Items]
Future operating lease payments	$ 79,386
Series B Preferred Stock | Quanergy Systems, Inc.
Investment [Line Items]
Equity investment	$ 50,000

Revenue Recognition (Details)

Revenue Recognition (Details) - 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 revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Warranty term after customer resells									12 months
Contract liabilities	$ 0								$ 0
Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									2,627,651	2,460,600	2,385,380
Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									893,976	846,133	816,908
Automotive
Disaggregation of Revenue [Line Items]
Net revenue									2,126,795	2,039,615	2,021,236
Automotive | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									2,076,834	1,989,152	1,973,264
Automotive | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									49,961	50,463	47,972
HVOR
Disaggregation of Revenue [Line Items]
Net revenue									550,817	471,448	412,116
HVOR | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									550,817	471,448	412,116
HVOR | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									0	0	0
Industrial
Disaggregation of Revenue [Line Items]
Net revenue									336,617	312,137	289,045
Industrial | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									0	0	0
Industrial | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									336,617	312,137	289,045
Appliance and HVAC
Disaggregation of Revenue [Line Items]
Net revenue									208,482	209,958	187,815
Appliance and HVAC | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									0	0	0
Appliance and HVAC | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									208,482	209,958	187,815
Aerospace
Disaggregation of Revenue [Line Items]
Net revenue									164,294	150,782	151,802
Aerospace | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									0	0	0
Aerospace | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									164,294	150,782	151,802
Other
Disaggregation of Revenue [Line Items]
Net revenue									134,622	122,793	140,274
Other | Performance Sensing
Disaggregation of Revenue [Line Items]
Net revenue									0	0	0
Other | Sensing Solutions
Disaggregation of Revenue [Line Items]
Net revenue									$ 134,622	$ 122,793	$ 140,274
Minimum
Disaggregation of Revenue [Line Items]
Warranty term									12 months
Maximum
Disaggregation of Revenue [Line Items]
Warranty term									18 months

Share-Based Payment Plans - Nar

Share-Based Payment Plans - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit associated with share-based compensation expense	$ 3,000,000	$ 0	$ 0
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options vested	$ 5,500,000	$ 5,600,000	$ 7,100,000
Annual vesting percentage	25.00%
Award vesting period (in years)	4 years
Expiration period	10 years
Granted during the year (in dollars per share)	$ 15.70	$ 14.50	$ 12.08
Employee Stock Option | Termination of Employment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	60 days
Employee Stock Option | Death or Disability
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	6 months
Restricted Stock | Minimum | Performance Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Restricted Stock | Maximum | Performance Cliff Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Restricted Securities With Performance Criteria
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
2010 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares (in shares)	10,000,000
Shares available (in shares)	3,300,000

Share-Based Payment Plans - Sum

Share-Based Payment Plans - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Options (thousands)
Beginning Balance (in shares)	3,606,000	3,546,000	3,361,000
Granted (in shares)	307,000	387,000	654,000
Forfeited and expired (in shares)	(39,000)	(1,000)	(111,000)
Exercised (in shares)	(172,000)	(326,000)	(358,000)
Ending Balance (in shares)	3,702,000	3,606,000	3,546,000	3,361,000
Options vested and exercisable (in shares)	2,625,000
Options vested and expected to vest (in shares)	3,556,000
Weighted-Average Exercise Price Per Option
Beginning Balance (in dollars per share)	$ 37.69	$ 35.67	$ 32.89
Granted (in dollars per share)	51.83	43.67	37.89
Forfeited and expired (in dollars per share)	45.59	32.03	43.95
Exercised (in dollars per share)	35.31	22.86	11.05
Ending Balance (in dollars per share)	38.89	$ 37.69	$ 35.67	$ 32.89
Options vested and exercisable, Weighted-Average Exercise Price (in dollars per share)	36.75
Options vested and expected to vest, Weighted-Average Exercise Price (in dollars per share)	$ 38.65
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted average remaining contractual term (in years)	5 years 3 months 1 day	5 years 11 months 16 days	6 years 3 months 18 days	6 years 2 months 12 days
Options vested and exercisable, Weighted-Average Remaining Contractual Term (in years)	4 years 2 months 1 day
Options vested and expected to vest, Weighted-Average Remaining Contractual Term (in years)	5 years 2 months 1 day
Beginning Balance, Aggregate Intrinsic Value	$ 50,130	$ 19,844	$ 47,967
Exercised, Aggregate Intrinsic Value	3,143	7,175	9,501
Ending Balance, Aggregate Intrinsic Value	27,846	$ 50,130	$ 19,844	$ 47,967
Options vested and exercisable, Aggregate Intrinsic Value	24,224
Options vested and expected to vest, Aggregate Intrinsic Value	$ 27,407
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)	307,000	387,000	654,000
Forfeited and expired (in shares)	(39,000)	(1,000)	(111,000)
Performance Shares
Number of Options (thousands)
Granted (in shares)			257
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Granted (in shares)			257
Nonvested Options
Number of Options (thousands)
Granted (in shares)	307,000
Forfeited and expired (in shares)	(31,000)
Beginning Balance (in shares)	1,184,000
Vested (in shares)	(383,000)
Ending Balance (in shares)	1,077,000	1,184,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Beginning Balance (in shares)	1,184,000
Granted (in shares)	307,000
Vested (in shares)	(383,000)
Forfeited and expired (in shares)	(31,000)
Ending Balance (in shares)	1,077,000	1,184,000
Weighted-Average Grant-Date Fair Value
Beginning Balance (in dollars per share)	$ 13.72
Granted during the year (in dollars per share)	15.70
Vested during the year (in dollars per share)	14.49
Forfeited during the year (in dollars per share)	14.26
Ending Balance (in dollars per share)	$ 13.98	$ 13.72

Share-Based Payment Plans - Wei

Share-Based Payment Plans - Weighted Average Key Assumptions in Estimating Grant Date Fair Value of Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per share of underlying ordinary shares (in dollars per share)	$ 51.83	$ 43.67	$ 37.89
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield	0.00%	0.00%	0.00%
Expected volatility	25.00%	30.00%	30.00%
Risk-free interest rate	2.62%	2.08%	1.48%
Expected term (years)	6 years	6 years	6 years

Share-Based Payment Plans - Res

Share-Based Payment Plans - Restricted Securities Granted (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock Without Performance Criteria
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	218	182	319
Granted (in dollars per share)	$ 51.05	$ 43.24	$ 38.33
Restricted Securities With Performance Criteria | 0.0% to 150.0%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Lower Range Limit	0.00%
Granted (in shares)	63
Granted (in dollars per share)	$ 51.83
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Upper Range Limit	150.00%
Restricted Securities With Performance Criteria | 0.0% to 172.5%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Lower Range Limit	0.00%
Granted (in shares)	118	183	180
Granted (in dollars per share)	$ 51.83	$ 43.67	$ 38.96
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Upper Range Limit	172.50%
Restricted Securities With Performance Criteria | 0.0% to 200.0%
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Lower Range Limit	0.00%
Granted (in shares)	0	53	0
Granted (in dollars per share)	$ 0	$ 43.33	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Threshold Range, Upper Range Limit	200.00%

Share-Based Payment Plans - Out

Share-Based Payment Plans - Outstanding Restricted Securities (Details) - Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Securities
Beginning Balance (in shares)	1,081	920	654
Granted (in shares)	399	418	499
Forfeited (in shares)	(121)	(35)	(48)
Vested (in shares)	(240)	(222)	(185)
Ending Balance (in shares)	1,119	1,081	920
Weighted-Average Grant-Date Fair Value
Beginning Balance (in dollars per share)	$ 44.43	$ 44.35	$ 45.87
Granted (in dollars per share)	51.40	43.44	38.56
Forfeited (in dollars per share)	48.28	43.94	47.01
Vested (in dollars per share)	53.01	42.24	33.41
Ending Balance (in dollars per share)	$ 44.66	$ 44.43	$ 44.35

Share-Based Payment Plans - Agg

Share-Based Payment Plans - Aggregate Intrinsic Value and Weighted-Average Remaining Periods On Restricted Stock (Details) - Restricted Stock - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Aggregate intrinsic value	$ 50,161	$ 55,271	$ 35,845
Expected to vest, Aggregate intrinsic value	$ 44,203	$ 42,106	$ 26,937
Outstanding, Weighted-average remaining period	1 year 2 months 18 days	1 year 3 months 18 days	1 year 6 months
Expected to vest, Weighted-average remaining period	1 year 2 months 18 days	1 year 4 months 24 days	1 year 6 months

Share-Based Payment Plans - Sha

Share-Based Payment Plans - Share Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 23,825	$ 19,819	$ 17,425
Unrecognized Compensation Expense	32,497
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	5,739	6,046	7,094
Unrecognized Compensation Expense	$ 9,329
Expected Recognition (years)	2 years 1 month 9 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 18,086	$ 13,773	$ 10,331
Unrecognized Compensation Expense	$ 23,168
Expected Recognition (years)	1 year 7 months 23 days

Restructuring and Other Charg_3

Restructuring and Other Charges, Net - Schedule of Restructuring and Other Charges, Net (Details) (Details) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)manufacturing_site	Dec. 31, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Severance costs, net	$ 870	$ (52,698)	$ 244	$ 3,766	$ 7,566	$ 11,125	$ 813
Facility and other exit costs					877	7,850	3,300
Gain on sale of Valves Business					(64,423)	0	0
Other					8,162	0	0
Restructuring and other charges, net					(47,818)	18,975	$ 4,113
Facility Closing, Minden, Germany
Restructuring Cost and Reserve [Line Items]
Severance costs, net						8,400
Facility and other exit costs						3,200
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Valves Business
Restructuring Cost and Reserve [Line Items]
Other					$ 5,900
Europe
Restructuring Cost and Reserve [Line Items]
Facility and other exit costs						$ 3,100
Number of other manufacturing sites | manufacturing_site						2
Merger With GIGAVAC, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Merger With GIGAVAC, LLC
Restructuring Cost and Reserve [Line Items]
Other	2,500
Deferred compensation	$ 2,200

Restructuring and Other Charg_4

Restructuring and Other Charges, Net - Schedule of Restructuring Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 7,583
Restructuring reserve, ending balance	6,591	$ 7,583
Restructuring Reserve [Abstract]
Accrued expenses and other current liabilities			$ 6,591	$ 4,184
Other long-term liabilities			0	3,399
Restructuring reserve	7,583	7,583	6,591	7,583
Employee Severance
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	7,583	17,350
Charges, net of reversals	7,566	11,125
Payments	(8,341)	(22,511)
Foreign currency remeasurement	(217)	1,619
Restructuring reserve, ending balance	6,591	7,583
Restructuring Reserve [Abstract]
Restructuring reserve	$ 7,583	$ 17,350	$ 6,591	$ 7,583

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended			25 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Jan. 31, 2018	Jan. 01, 2016consolidated_tax_return	Apr. 30, 2008consolidated_tax_return	Apr. 29, 2008consolidated_tax_return
Income Tax Contingency [Line Items]
Number of consolidated tax returns | consolidated_tax_return							1	2	1
U.S. Tax Reform Impact		$ 73,700	$ 0	$ 73,668	$ 0
Valuation allowance reduction from tax reform			120,000
Foreign tax rate differential			41,200	111,990	86,339
Release of valuation allowances			(123,426)	(3,368)	30,565
Withholding taxes not creditable			8,734	3,896	$ 6,014
Increase (decrease) of unrecognized tax benefits	$ 500		500
Unrecognized tax benefits	11,500	$ 5,400	11,500	5,400
Research credit, tax benefit, prior period			10,000
Research credit, tax benefit, current period			2,500
US Federal
Income Tax Contingency [Line Items]
Release of valuation allowances	122,100		120,300	$ 22,400
Operating loss carryforwards	416,000		416,000
Interest expense carryforward	460,200		460,200
Foreign Tax Authority
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 238,000		$ 238,000
Changzhou, China Subsidiary
Income Tax Contingency [Line Items]
Reduced tax rate						15.00%
Minimum
Income Tax Contingency [Line Items]
Amortization period (in years)			6 years
Maximum
Income Tax Contingency [Line Items]
Amortization period (in years)			20 years

Other, Net (Details)

Other, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Currency remeasurement (loss)/gain on net monetary assets	$ (18,905)	$ 18,041	$ (10,621)
Gain/(loss) on foreign currency forward contracts	2,070	(15,618)	(1,850)
(Loss)/gain on commodity forward contracts	(8,481)	9,989	7,399
Loss on debt financing	(2,350)	(2,670)	0
Net periodic benefit cost, excluding service cost	(3,585)	(3,402)	(192)
Other	886	75	171
Other, net	$ (30,365)	$ 6,415	$ (5,093)

Income Taxes - Income Before Ta

Income Taxes - Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S.	$ 68,027	$ (11,425)	$ (43,842)
Non-U.S.	458,348	413,866	365,287
Income before taxes	$ 526,375	$ 402,441	$ 321,445

Income Taxes - (Benefit from)_P

Income Taxes - (Benefit from)/Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
U.S. Federal
U.S. Federal, Current	$ 5,700	$ 0	$ 464
U.S. Federal, Deferred	(109,663)	(56,956)	10,036
U.S. Federal, Total	(103,963)	(56,956)	10,500
Non-U.S.
Non-U.S., Current	64,666	50,601	49,977
Non-U.S., Deferred	(18,770)	(1,104)	2,010
Non-U.S., Total	45,896	49,497	51,987
U.S. State
U.S. State, Current	1,082	240	226
U.S. State, Deferred	(15,635)	1,303	(3,702)
U.S. State, Total	(14,553)	1,543	(3,476)
Total, Current	71,448	50,841	50,667
Total, Deferred	(144,068)	(56,757)	8,344
(Benefit from)/provision for income taxes	$ (72,620)	$ (5,916)	$ 59,011

Income Taxes - Effective Tax Ra

Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal statutory tax rate		21.00%	35.00%	35.00%
Tax computed at statutory rate of 21% in 2018 and 35% in 2017 and 2016		$ 110,539	$ 140,854	$ 112,506
Change in valuation allowances		(123,426)	(3,368)	30,565
Foreign tax rate differential		(41,200)	(111,990)	(86,339)
Change in tax laws or rates		(22,264)	3,912	2,542
Research and development incentives		(19,475)	(5,922)	(10,961)
U.S. state taxes, net of federal benefit		(11,499)	1,087	(2,166)
Unrealized foreign exchange losses, net		11,346	830	3,829
Reserve for tax exposure		10,775	38,013	11,227
Withholding taxes not creditable		8,734	3,896	6,014
U.S. Tax Reform impact	$ (73,700)	0	(73,668)	0
Other		3,850	440	(8,206)
(Benefit from)/provision for income taxes		$ (72,620)	$ (5,916)	$ 59,011

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Inventories and related reserves	$ 14,171	$ 17,287
Prepaid and accrued expenses	71,004	25,920
Property, plant and equipment	14,571	13,396
Intangible assets	27,122	22,050
Unrealized exchange loss	4,255	12,265
Net operating loss, interest expense, and other carryforwards	296,255	349,244
Pension liability and other	8,701	8,880
Share-based compensation	11,332	12,195
Other	10,151	7,028
Total deferred tax assets	457,562	468,265
Valuation allowance	(157,043)	(277,315)
Net deferred tax asset	300,519	190,950
Deferred tax liabilities:
Property, plant and equipment	(15,795)	(23,222)
Intangible assets and goodwill	(440,348)	(428,028)
Unrealized exchange gain	(6,912)	(6,031)
Tax on undistributed earnings of subsidiaries	(35,187)	(38,894)
Total deferred tax liabilities	(498,242)	(496,175)
Net deferred tax liability	$ (197,723)	$ (305,225)

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning of Period	$ 59,884	$ 45,898	$ 38,057
Increases related to prior year tax positions	14,609	7,968	6,390
Increases related to current year tax positions	15,676	14,585	8,462
Increases related to business combination	1,000
Decreases related to prior year tax positions	(1,144)
Decreases related to lapse of applicable statute of limitations		(1,356)	(256)
Decreases related to foreign currency exchange rate fluctuations	(416)
Decreases related to lapse of applicable statute of limitations		(7,211)	(6,755)
Unrecognized Tax Benefits, End of Period	$ 89,609	$ 59,884	$ 45,898

Income Taxes - Interest and Pen

Income Taxes - Interest and Penalties (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statements of Operations
Interest	$ (0.2)	$ 0.2	$ 0.1
Penalties	(0.2)	(0.1)	$ 0.1
Balance Sheets
Interest	0.4	0.7
Penalties	$ 0.4	$ 0.5

Net Income Per Share - Weighted

Net Income Per Share - Weighted-average Ordinary Shares Outstanding for Basic and Diluted Net Income Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic weighted-average ordinary shares outstanding (in shares)	168,570	171,165	170,709
Dilutive effect of stock options (in shares)	822	616	489
Dilutive effect of unvested restricted securities (in shares)	467	388	262
Diluted weighted-average ordinary shares outstanding (in shares)	169,859	172,169	171,460

Net Income Per Share - Anti-dil

Net Income Per Share - Anti-dilutive Shares (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Anti-dilutive shares excluded
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded (in shares)	930	1,410	1,401
Contingently issuable shares excluded
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded (in shares)	687	871	606

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory, Net [Abstract]
Finished goods	$ 187,095	$ 195,089
Work-in-process	104,405	92,678
Raw materials	200,819	158,362
Inventories	$ 492,319	$ 446,129

Property, Plant and Equipment_3

Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment, Net, by Type [Abstract]
Property, plant and equipment, at cost	$ 1,501,488	$ 1,406,013
Accumulated depreciation	(714,310)	(655,964)
Property, plant and equipment, net	787,178	750,049
Depreciation	106,014	109,321	$ 106,903
Land
Property, Plant and Equipment, Net, by Type [Abstract]
Property, plant and equipment, at cost	22,021	23,077
Buildings and improvements
Property, Plant and Equipment, Net, by Type [Abstract]
Property, plant and equipment, at cost	259,182	250,475
Machinery and equipment
Property, Plant and Equipment, Net, by Type [Abstract]
Property, plant and equipment, at cost	1,220,285	1,132,461
Assets held under capital leases
Property, Plant and Equipment, Net, by Type [Abstract]
Property, plant and equipment, at cost	49,714	45,249
Accumulated depreciation	(22,508)	(20,631)
Property, plant and equipment, net	$ 27,206	$ 24,618

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Net - Schedule of Changes in Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Gross Goodwill	$ 3,099,768	$ 3,023,930
Accumulated Impairment	(18,466)	(18,466)
Goodwill [Roll Forward]
Net Goodwill, Beginning Balance	3,005,464
Divestiture of Valves Business	(38,800)
Acquisition of GIGAVAC	114,638
Net Goodwill, Ending Balance	3,081,302
Performance Sensing
Goodwill [Line Items]
Gross Goodwill	2,155,633	2,148,135
Accumulated Impairment	0	0
Goodwill [Roll Forward]
Net Goodwill, Beginning Balance	2,148,135
Divestiture of Valves Business	(38,800)
Acquisition of GIGAVAC	46,298
Net Goodwill, Ending Balance	2,155,633
Sensing Solutions
Goodwill [Line Items]
Gross Goodwill	944,135	875,795
Accumulated Impairment	(18,466)	$ (18,466)
Goodwill [Roll Forward]
Net Goodwill, Beginning Balance	857,329
Acquisition of GIGAVAC	68,340
Net Goodwill, Ending Balance	$ 925,669

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Net - Acquired Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	12 years
Gross Carrying Amount	$ 2,740,156	$ 2,633,229
Accumulated Amortization	(1,896,861)	(1,767,001)
Accumulated Impairment	(14,574)	(14,574)
Net Carrying Value	828,721	851,654
Capitalized software written-off	200	1,100
Amortization of intangible assets	139,326	161,050	$ 201,498
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,019	142,198
2,020	127,046
2,021	110,203
2,022	95,029
2,023	81,055
Acquisition-related definite-lived intangible assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 132,235	153,729	194,208
Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	14 years
Gross Carrying Amount	$ 759,008	727,968
Accumulated Amortization	(475,295)	(418,987)
Accumulated Impairment	(2,430)	(2,430)
Net Carrying Value	$ 281,283	306,551
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	11 years
Gross Carrying Amount	$ 1,825,698	1,771,198
Accumulated Amortization	(1,352,189)	(1,287,581)
Accumulated Impairment	(12,144)	(12,144)
Net Carrying Value	$ 461,365	471,473
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	8 years
Gross Carrying Amount	$ 23,400	23,400
Accumulated Amortization	(23,400)	(23,400)
Accumulated Impairment	0	0
Net Carrying Value	$ 0	0
Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	21 years
Gross Carrying Amount	$ 66,154	50,754
Accumulated Amortization	(13,468)	(11,094)
Accumulated Impairment	0	0
Net Carrying Value	$ 52,686	39,660
Capitalized software and other
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)	7 years
Gross Carrying Amount	$ 65,896	59,909
Accumulated Amortization	(32,509)	(25,939)
Accumulated Impairment	0	0
Net Carrying Value	33,387	33,970
Amortization of intangible assets	$ 7,091	$ 7,321	$ 7,290
Klixon and Airpax [Member]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Length of time in existence (in years)	65 years
Klixon
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Tradenames	$ 59,100
Airpax
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Tradenames	$ 9,400

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued expenses and other current liabilities [Abstract]
Accrued compensation and benefits	$ 68,936	$ 89,816
Accrued interest	40,550	36,919
Foreign currency and commodity forward contracts	7,710	35,094
Accrued severance	6,591	4,184
Current portion of pension and post-retirement benefit obligations	3,176	3,342
Other accrued expenses and current liabilities	91,167	90,205
Accrued expenses and other current liabilities	$ 218,130	$ 259,560

Pension and Other Post-Retire_3

Pension and Other Post-Retirement Benefits - Defined Benefit Pension Plans (Details) - Pension Plan - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
United States
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 3,985,000	$ 344,000
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions		$ 4,000,000
Defined Benefit Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Number of consecutive years of compensation		5 years
Defined Benefit Pension Plans | Forecast
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 0

Pension and Other Post-Retire_4

Pension and Other Post-Retirement Benefits - Defined Contribution Plans (Details) - Pension Plan - United States - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2012
Defined Contribution Plan Disclosure [Line Items]
Percent of annual eligible earnings				4.00%
Aggregate expense	$ 5.7	$ 5.9	$ 5.8

Pension and Other Post-Retire_5

Pension and Other Post-Retirement Benefits - Retiree Healthcare Benefit Plan and Non-U.S. Benefit Plans (Details) - Postemployment Retirement Benefits - United States - Retiree Healthcare Benefit Plans $ in Millions	3 Months Ended
	Dec. 31, 2013USD ($)
Defined Benefit Plan Disclosure [Line Items]
Gain from amendment	$ 7.2
Number of years from date of recognition	5 years

Pension and Other Post-Retire_6

Pension and Other Post-Retirement Benefits - Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Plan | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0	$ 0	$ 0
Interest cost	1,473	1,604	1,461
Expected return on plan assets	(1,710)	(2,151)	(2,684)
Amortization of net loss	1,080	1,149	707
Amortization of net prior service (credit)/cost	0	0	0
Loss on settlement	1,047	3,225	1,293
Loss/(gain) on curtailment	0	0	0
Net periodic benefit cost/(credit)	1,890	3,827	777
Pension Plan | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	3,122	2,582	2,716
Interest cost	1,310	1,053	1,179
Expected return on plan assets	(929)	(905)	(952)
Amortization of net loss	407	287	488
Amortization of net prior service (credit)/cost	6	(4)	(20)
Loss on settlement	1,461	100	34
Loss/(gain) on curtailment	891	0	(486)
Net periodic benefit cost/(credit)	6,268	3,113	2,959
Postemployment Retirement Benefits | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	50	74	83
Interest cost	272	325	364
Expected return on plan assets	0	0	0
Amortization of net loss	5	54	143
Amortization of net prior service (credit)/cost	(1,728)	(1,335)	(1,335)
Loss on settlement	0	0	0
Loss/(gain) on curtailment	0	0	0
Net periodic benefit cost/(credit)	$ (1,401)	$ (882)	$ (745)

Pension and Other Post-Retire_7

Pension and Other Post-Retirement Benefits - Effect of ASU 2017-07 (Details) - 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
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Cost of revenue									2,266,863	2,138,898	2,084,159
Research and development									147,279	130,127	126,656
Selling, general and administrative									305,558	301,896	293,506
Amortization of intangible assets									139,326	161,050	201,498
Restructuring and other charges, net					$ 207	$ 1,329	$ 6,389	$ 11,050		18,975	4,113
Total operating costs and expenses									2,811,208	2,750,946	2,709,932
Profit from operations									710,419	555,787	492,356
Interest expense, net									(153,679)	(159,761)	(165,818)
Other, net									(30,365)	6,415	(5,093)
Income before taxes									$ 526,375	402,441	321,445
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net revenue										3,306,733	3,202,288
Cost of revenue										2,141,308	2,084,261
Research and development										130,204	126,665
Selling, general and administrative										302,811	293,587
Amortization of intangible assets										161,050	201,498
Restructuring and other charges, net										18,975	4,113
Total operating costs and expenses										2,754,348	2,710,124
Profit from operations										552,385	492,164
Interest expense, net										(159,761)	(165,818)
Other, net										9,817	(4,901)
Income before taxes										402,441	321,445
Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net revenue										0	0
Cost of revenue										(2,410)	(102)
Research and development										(77)	(9)
Selling, general and administrative										(915)	(81)
Amortization of intangible assets										0	0
Restructuring and other charges, net										0	0
Total operating costs and expenses										(3,402)	(192)
Profit from operations										3,402	192
Interest expense, net										0	0
Other, net										(3,402)	(192)
Income before taxes										$ 0	$ 0

Pension and Other Post-Retire_8

Pension and Other Post-Retirement Benefits - Change in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Plan | United States
Change in benefit obligation:
Beginning balance	$ 48,615	$ 57,679
Service cost	0	0	$ 0
Interest cost	1,473	1,604	1,461
Plan participants’ contributions	0	0
Plan amendment	0	0
Actuarial (gain)/loss	(519)	2,936
Curtailments	0	0
Benefits paid	(4,400)	(13,604)
Divestiture	0	0
Foreign currency remeasurement	0	0
Ending balance	45,169	48,615	57,679
Change in plan assets:
Beginning balance	41,101	52,042
Actual return on plan assets	(811)	2,319
Employer contributions	3,985	344
Plan participants’ contributions	0	0
Benefits paid	(4,400)	(13,604)
Foreign currency remeasurement	0	0
Ending balance	39,875	41,101	52,042
Funded status at end of year	(5,294)	(7,514)
Accumulated benefit obligation at end of year	45,169	48,615
Pension Plan | Foreign Plan
Change in benefit obligation:
Beginning balance	67,413	59,056
Service cost	3,122	2,582	2,716
Interest cost	1,310	1,053	1,179
Plan participants’ contributions	60	120
Plan amendment	0	(6)
Actuarial (gain)/loss	2,777	2,692
Curtailments	931	0
Benefits paid	(6,262)	(2,572)
Divestiture	(3,310)	0
Foreign currency remeasurement	(350)	4,488
Ending balance	65,691	67,413	59,056
Change in plan assets:
Beginning balance	41,222	37,361
Actual return on plan assets	(1,308)	1,241
Employer contributions	5,992	2,586
Plan participants’ contributions	60	120
Benefits paid	(6,262)	(2,572)
Foreign currency remeasurement	164	2,486
Ending balance	39,868	41,222	37,361
Funded status at end of year	(25,823)	(26,191)
Accumulated benefit obligation at end of year	59,948	60,588
Postemployment Retirement Benefits | United States
Change in benefit obligation:
Beginning balance	9,692	10,296
Service cost	50	74
Interest cost	272	325
Plan participants’ contributions	475	519
Plan amendment	(3,243)	0
Actuarial (gain)/loss	(124)	(197)
Curtailments	0	0
Benefits paid	(1,105)	(1,325)
Divestiture	0	0
Foreign currency remeasurement	0	0
Ending balance	6,017	9,692	10,296
Change in plan assets:
Beginning balance	0	0
Actual return on plan assets	0	0
Employer contributions	630	1,325
Plan participants’ contributions	475	0
Benefits paid	(1,105)	(1,325)
Foreign currency remeasurement	0	0
Ending balance	0	0	$ 0
Funded status at end of year	$ (6,017)	$ (9,692)

Pension and Other Post-Retire_9

Pension and Other Post-Retirement Benefits - Funded Status Amounts Recognized on Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (3,176)	$ (3,342)
Noncurrent liabilities	(33,958)	(40,055)
Pension Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(595)	(638)
Noncurrent liabilities	(4,699)	(6,876)
Funded status	(5,294)	(7,514)
Pension Plan | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(1,465)	(1,494)
Noncurrent liabilities	(24,358)	(24,697)
Funded status	(25,823)	(26,191)
Postemployment Retirement Benefits | United States
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	0	0
Current liabilities	(1,116)	(1,210)
Noncurrent liabilities	(4,901)	(8,482)
Funded status	$ (6,017)	$ (9,692)

Pension and Other Post-Retir_10

Pension and Other Post-Retirement Benefits - Balances Included within Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortized loss	$ 500
Pension Plan | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service credit	0	$ 0	$ 0
Net loss	20,759	20,884	22,490
Pension Plan | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service credit	(10)	(220)	(218)
Net loss	14,425	12,489	11,070
Postemployment Retirement Benefits | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service credit	(692)	823	(512)
Net loss	$ 880	$ 1,009	$ 1,260

Pension and Other Post-Retir_11

Pension and Other Post-Retirement Benefits - Accumulated and Projected Benefit Obligation (Details) - Pension Plan - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
United States
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	$ 45,169	$ 48,615
Accumulated benefit obligation	45,169	48,615
Plan assets	39,875	41,101
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	51,186	58,307
Plan assets	39,875	41,101
Foreign Plan
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	65,691	31,680
Accumulated benefit obligation	59,948	26,609
Plan assets	39,868	5,759
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation	65,691	63,153
Plan assets	$ 39,868	$ 36,990

Pension and Other Post-Retir_12

Pension and Other Post-Retirement Benefits - Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total in other comprehensive (income)/loss	$ 377	$ 895	$ 4,248
Pension Plan | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss/(gain)	2,002	2,768	5,368
Amortization of net loss	(1,080)	(1,149)	(707)
Amortization of net prior service credit/(cost)	0	0	0
Divestiture	0	0	0
Plan amendment	0	0	0
Settlement effect	(1,047)	(3,225)	(1,293)
Curtailment effect	0	0	0
Total in other comprehensive (income)/loss	(125)	(1,606)	3,368
Pension Plan | Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss/(gain)	3,669	1,618	2,505
Amortization of net loss	(298)	(130)	(436)
Amortization of net prior service credit/(cost)	(4)	3	15
Divestiture	(228)	0	0
Plan amendment	0	(5)	(73)
Settlement effect	(1,023)	(69)	(67)
Curtailment effect	30	0	(1,272)
Total in other comprehensive (income)/loss	2,146	1,417	672
Postemployment Retirement Benefits | United States
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net loss/(gain)	(124)	(197)	(984)
Amortization of net loss	(5)	(54)	(143)
Amortization of net prior service credit/(cost)	1,728	1,335	1,335
Divestiture	0	0	0
Plan amendment	(3,243)	0	0
Settlement effect	0	0	0
Curtailment effect	0	0	0
Total in other comprehensive (income)/loss	$ (1,644)	$ 1,084	$ 208

Pension and Other Post-Retir_13

Pension and Other Post-Retirement Benefits - Assumptions and Investment Policies and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Plan | United States
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate				3.79%	3.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.45%	3.20%	3.10%
Long-term rate of return on plan assets	4.57%	4.50%	5.00%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2,019				$ 6,466
2,020				5,826
2,021				5,313
2,022				4,128
2,023				3,677
2024 - 2027				10,498
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	$ 41,101	$ 52,042	$ 52,042	39,875	$ 41,101	$ 52,042
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	41,101	52,042
Ending balance	39,875	41,101	$ 52,042
Pension Plan | United States | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	41,101	41,101		39,875	41,101
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	41,101
Ending balance	39,875	41,101
Pension Plan | United States | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Fixed Income Funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				83.00%
Plan assets	28,726	28,726		$ 28,078	28,726
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	28,726
Ending balance	28,078	28,726
Pension Plan | United States | Fixed Income Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	28,726	28,726		28,078	28,726
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	28,726
Ending balance	28,078	28,726
Pension Plan | United States | Fixed Income Funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Fixed Income Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Equity securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				17.00%
Plan assets	7,306	7,306		$ 6,500	7,306
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	7,306
Ending balance	6,500	7,306
Pension Plan | United States | Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	7,306	7,306		6,500	7,306
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	7,306
Ending balance	6,500	7,306
Pension Plan | United States | Equity securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Equity securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | U.S. large cap equity
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				7.00%
Actual Allocation				7.00%
Plan assets	3,288	3,288		$ 2,960	3,288
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,288
Ending balance	2,960	3,288
Pension Plan | United States | U.S. large cap equity | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	3,288	3,288		2,960	3,288
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,288
Ending balance	2,960	3,288
Pension Plan | United States | U.S. large cap equity | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | U.S. large cap equity | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | U.S. small / mid cap equity
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				2.00%
Actual Allocation				2.00%
Plan assets	942	942		$ 833	942
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	942
Ending balance	833	942
Pension Plan | United States | U.S. small / mid cap equity | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	942	942		833	942
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	942
Ending balance	833	942
Pension Plan | United States | U.S. small / mid cap equity | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | U.S. small / mid cap equity | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Globally managed volatility fund
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				3.00%
Actual Allocation				3.00%
Plan assets	1,288	1,288		$ 1,214	1,288
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,288
Ending balance	1,214	1,288
Pension Plan | United States | Globally managed volatility fund | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	1,288	1,288		1,214	1,288
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,288
Ending balance	1,214	1,288
Pension Plan | United States | Globally managed volatility fund | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Globally managed volatility fund | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | International (non-U.S.) equity
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				4.00%
Actual Allocation				4.00%
Plan assets	1,788	1,788		$ 1,493	1,788
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,788
Ending balance	1,493	1,788
Pension Plan | United States | International (non-U.S.) equity | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	1,788	1,788		1,493	1,788
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,788
Ending balance	1,493	1,788
Pension Plan | United States | International (non-U.S.) equity | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | International (non-U.S.) equity | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Fixed income (U.S. investment and non-investment grade)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				68.00%
Actual Allocation				67.00%
Plan assets	27,507	27,507		$ 26,884	27,507
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27,507
Ending balance	26,884	27,507
Pension Plan | United States | Fixed income (U.S. investment and non-investment grade) | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	27,507	27,507		26,884	27,507
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	27,507
Ending balance	26,884	27,507
Pension Plan | United States | Fixed income (U.S. investment and non-investment grade) | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Fixed income (U.S. investment and non-investment grade) | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | High-yield fixed income
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				2.00%
Actual Allocation				2.00%
Plan assets	821	821		$ 792	821
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	821
Ending balance	792	821
Pension Plan | United States | High-yield fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	821	821		792	821
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	821
Ending balance	792	821
Pension Plan | United States | High-yield fixed income | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | High-yield fixed income | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | International (non-U.S.) fixed income
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				1.00%
Actual Allocation				1.00%
Plan assets	398	398		$ 402	398
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	398
Ending balance	402	398
Pension Plan | United States | International (non-U.S.) fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	398	398		402	398
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	398
Ending balance	402	398
Pension Plan | United States | International (non-U.S.) fixed income | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | International (non-U.S.) fixed income | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Money market funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				13.00%
Actual Allocation				13.00%
Plan assets	5,069	5,069		$ 5,297	5,069
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	5,069
Ending balance	5,297	5,069
Pension Plan | United States | Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	5,069	5,069		5,297	5,069
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	5,069
Ending balance	5,297	5,069
Pension Plan | United States | Money market funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | United States | Money market funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	$ 0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	$ 0	$ 0
Pension Plan | Foreign Plan
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate				2.17%	2.07%
Pay progression				2.66%	2.66%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	5.87%	3.90%	3.83%
Long-term rate of return on plan assets	2.26%	2.29%	2.60%
Pay progression	4.82%	3.75%	3.78%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2,019				$ 2,959
2,020				3,232
2,021				3,228
2,022				3,829
2,023				3,528
2024 - 2027				21,700
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	$ 41,222	$ 37,361	$ 37,361	39,868	$ 41,222	37,361
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	41,222	37,361
Ending balance	$ 39,868	41,222	37,361
Pension Plan | Japan
Defined Benefit Plan, Information about Plan Assets [Abstract]
Deviation Allowance	40.00%
Plan assets	$ 31,231	31,231		29,865	31,231
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	31,231
Ending balance	29,865	31,231
Pension Plan | Japan | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	30,963	30,963		29,596	30,963
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	30,963
Ending balance	29,596	30,963
Pension Plan | Japan | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	268	268		269	268
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	268
Ending balance	269	268
Pension Plan | Japan | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Fixed Income Funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				50.00%
Actual Allocation				75.00%
Plan assets	14,282	14,282		$ 12,156	14,282
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	14,282
Ending balance	12,156	14,282
Pension Plan | Japan | Fixed Income Funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	14,014	14,014		11,887	14,014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	14,014
Ending balance	11,887	14,014
Pension Plan | Japan | Fixed Income Funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	268	268		269	268
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	268
Ending balance	269	268
Pension Plan | Japan | Fixed Income Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		$ 0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Equity securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				50.00%
Actual Allocation				25.00%
Plan assets	9,028	9,028		$ 7,370	9,028
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,028
Ending balance	7,370	9,028
Pension Plan | Japan | Equity securities | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	9,028	9,028		7,370	9,028
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,028
Ending balance	7,370	9,028
Pension Plan | Japan | Equity securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Equity securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | U.S. equity
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	2,461	2,461		2,212	2,461
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,461
Ending balance	2,212	2,461
Pension Plan | Japan | U.S. equity | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	2,461	2,461		2,212	2,461
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,461
Ending balance	2,212	2,461
Pension Plan | Japan | U.S. equity | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | U.S. equity | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | International
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	6,567	6,567		5,158	6,567
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	6,567
Ending balance	5,158	6,567
Pension Plan | Japan | International | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	6,567	6,567		5,158	6,567
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	6,567
Ending balance	5,158	6,567
Pension Plan | Japan | International | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | International | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Fixed income (U.S. investment and non-investment grade)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	3,236	3,236		3,345	3,236
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,236
Ending balance	3,345	3,236
Pension Plan | Japan | Fixed income (U.S. investment and non-investment grade) | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	2,968	2,968		3,076	2,968
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,968
Ending balance	3,076	2,968
Pension Plan | Japan | Fixed income (U.S. investment and non-investment grade) | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	268	268		269	268
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	268
Ending balance	269	268
Pension Plan | Japan | Fixed income (U.S. investment and non-investment grade) | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | International (non-U.S.) fixed income
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	11,046	11,046		8,811	11,046
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	11,046
Ending balance	8,811	11,046
Pension Plan | Japan | International (non-U.S.) fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	11,046	11,046		8,811	11,046
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	11,046
Ending balance	8,811	11,046
Pension Plan | Japan | International (non-U.S.) fixed income | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | International (non-U.S.) fixed income | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	7,921	7,921		10,339	7,921
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	7,921
Ending balance	10,339	7,921
Pension Plan | Japan | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	7,921	7,921		10,339	7,921
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	7,921
Ending balance	10,339	7,921
Pension Plan | Japan | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Japan | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Netherlands
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	9,059	9,059		8,897	9,059
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,059
Ending balance	8,897	9,059
Pension Plan | Netherlands | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Netherlands | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Netherlands | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	9,059	8,014	8,014	8,897	9,059	$ 8,014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,059	8,014
Actual return on plan assets still held at reporting date	177	(597)
Purchases, sales, settlements, and exchange rate changes	(339)	1,642
Ending balance	8,897	9,059	$ 8,014
Pension Plan | Netherlands | Insurance Policies
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	9,059	9,059		8,897	9,059
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,059
Ending balance	8,897	9,059
Pension Plan | Netherlands | Insurance Policies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Netherlands | Insurance Policies | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	0	0		0	0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0
Ending balance	0	0
Pension Plan | Netherlands | Insurance Policies | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	9,059	9,059		8,897	9,059
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	9,059
Ending balance	8,897	9,059
Pension Plan | Belgium | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	900	900		$ 1,100	$ 900
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	900
Ending balance	1,100	$ 900
Postemployment Retirement Benefits
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Ultimate trend rate				4.50%	4.50%	4.50%
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]
1 percentage point increase, Effect on total service and interest cost components	6
1 percentage point increase, Effect on post-retirement benefit obligations	200
1 percentage point decrease, Effect on total service and interest cost components	(5)
1 percentage point decrease, Effect on post-retirement benefit obligations	$ (248)
Postemployment Retirement Benefits | Attributed to less than age 65
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Assumed healthcare trend rate for next year:				6.60%	6.90%	7.10%
Year in which ultimate trend rate is reached:	2,038	2,038	2,038
Postemployment Retirement Benefits | Attributed to age 65 or greater
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Assumed healthcare trend rate for next year:				7.10%	7.50%	7.80%
Year in which ultimate trend rate is reached:	2,038	2,038	2,038
Postemployment Retirement Benefits | United States
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate				3.90%	3.10%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	3.10%	3.30%	3.50%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2,019				$ 1,116
2,020				738
2,021				696
2,022				634
2,023				523
2024 - 2027				1,905
Defined Benefit Plan, Information about Plan Assets [Abstract]
Plan assets	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Ending balance	$ 0	$ 0	$ 0
Minimum | Pension Plan | Japan | Fixed Income Funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				10.00%
Minimum | Pension Plan | Japan | Equity securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				10.00%
Maximum | Pension Plan | Japan | Fixed Income Funds
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				90.00%
Maximum | Pension Plan | Japan | Equity securities
Defined Benefit Plan, Information about Plan Assets [Abstract]
Target Allocation				90.00%

Debt - Schedule of Long-Term De

Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 3,267,794
Less: discount	(15,169)	$ (14,424)
Less: deferred financing costs	(23,159)	(27,758)
Less: current portion	(9,704)	(9,802)
Long-term debt, net	3,219,762	3,225,810
Capital lease and other financing obligations	35,475	34,657
Less: current portion	(4,857)	(5,918)
Capital lease and other financing obligations, less current portion	30,618	28,739
Original Term Loans
Debt Instrument [Line Items]
Long-term debt	$ 917,794	927,794
4.875% Senior Notes
Debt Instrument [Line Items]
Interest rate	4.875%
Long-term debt	$ 500,000	500,000
5.625% Senior Notes
Debt Instrument [Line Items]
Interest rate	5.625%
Long-term debt	$ 400,000	400,000
5.0% Senior Notes
Debt Instrument [Line Items]
Interest rate	5.00%
Long-term debt	$ 700,000	700,000
6.25% Senior Notes
Debt Instrument [Line Items]
Interest rate	6.25%
Long-term debt	$ 750,000	$ 750,000
Senior Notes | 4.875% Senior Notes
Debt Instrument [Line Items]
Interest rate	4.875%
Senior Notes | 5.625% Senior Notes
Debt Instrument [Line Items]
Interest rate	5.625%
Senior Notes | 5.0% Senior Notes
Debt Instrument [Line Items]
Interest rate	5.00%
Senior Notes | 6.25% Senior Notes
Debt Instrument [Line Items]
Interest rate	6.25%

Debt - Credit Facilities (Detai

Debt - Credit Facilities (Details) - USD ($)	Nov. 06, 2017	Dec. 31, 2018	Nov. 07, 2017	May 31, 2015	May 31, 2011
Original Term Loans
Debt Instrument [Line Items]
Amortization percent of principal			1.00%
Base Rate Loans
Debt Instrument [Line Items]
Basis spread	1.25%	0.75%
Base interest rate	1.75%			1.00%
Eurodollar Rate Loans
Debt Instrument [Line Items]
Basis spread	2.25%	1.75%
Base interest rate	0.75%			0.00%
Leverage Ratio Achievement Scenario One
Debt Instrument [Line Items]
Commitment fee percent		1.625%
Leverage Ratio Achievement Scenario Two
Debt Instrument [Line Items]
Commitment fee percent		1.375%
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 420,000,000
Accordion feature increase limit			$ 1,000,000,000
Remaining borrowing capacity		$ 416,100,000
Letters of credit outstanding		3,900,000
Letter of credit borrowings		$ 0
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee on unused portion		0.25%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee on unused portion		0.375%
Revolving Credit Facility | Base Rate Loans
Debt Instrument [Line Items]
Index spread 1		0.75%
Index spread 2		0.50%
Revolving Credit Facility | Eurodollar Rate Loans
Debt Instrument [Line Items]
Index spread 1		1.75%
Index spread 2		1.50%

Debt - Senior Notes (Details)

Debt - Senior Notes (Details) - USD ($)	1 Months Ended	12 Months Ended
	Nov. 30, 2015	Dec. 31, 2018
4.875% Senior Notes
Debt Instrument [Line Items]
Interest rate		4.875%
5.625% Senior Notes
Debt Instrument [Line Items]
Interest rate		5.625%
5.0% Senior Notes
Debt Instrument [Line Items]
Interest rate		5.00%
6.25% Senior Notes
Debt Instrument [Line Items]
Interest rate		6.25%
Senior Notes
Debt Instrument [Line Items]
Redemption price percent		100.00%
Percent of holders		25.00%
Senior Notes | 4.875% Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 500,000,000
Interest rate		4.875%
Senior Notes | 5.625% Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 400,000,000
Interest rate		5.625%
Senior Notes | 5.0% Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 700,000,000
Interest rate		5.00%
Senior Notes | 6.25% Senior Notes
Debt Instrument [Line Items]
Principal amount		$ 750,000,000
Interest rate		6.25%
Senior Notes | 6.25% Senior Notes | Second redemption period
Debt Instrument [Line Items]
Redemption price percent	100.00%
Debt Instrument, Redemption, Upon Change in Control Event | Senior Notes
Debt Instrument [Line Items]
Redemption price percent		101.00%
Debt Instrument, Redemption, Upon Change in in Tax Law | Senior Notes
Debt Instrument [Line Items]
Redemption price percent		100.00%

Debt - Debt Instrument Redempti

Debt - Debt Instrument Redemption (Details)	12 Months Ended
	Dec. 31, 2018
2,021
Debt Instrument, Redemption [Line Items]
Redemption price percent	103.125%
2,022
Debt Instrument, Redemption [Line Items]
Redemption price percent	102.083%
2,023
Debt Instrument, Redemption [Line Items]
Redemption price percent	101.042%
2024 and thereafter
Debt Instrument, Redemption [Line Items]
Redemption price percent	100.00%

Debt - Restrictions and Covenan

Debt - Restrictions and Covenants (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum allowable leverage ratio	5
Maximum percent of commitment	10.00%
Parent Company
Debt Instrument [Line Items]
Investment in subsidiaries	$ 2,932,218,000	$ 2,258,559,000
STBV | Senior Secured Credit Facilities and Senior Notes
Debt Instrument [Line Items]
Maximum allowable leverage ratio	2
Maximum costs	$ 20,000,000
Maximum amount for distributions	100,000,000
Maximum amount for dividends and distributions	50,000,000
Maximum amount for aggregate dividends and other distributions	$ 150,000,000

Debt - Accounting for Debt Tran

Debt - Accounting for Debt Transactions (Details) - USD ($) $ in Millions	Mar. 28, 2018	Dec. 31, 2017
Extinguishment of Debt [Line Items]
Payments for merger related costs	$ 5.8
Deferred financing cost		$ 0.2
Other, net
Extinguishment of Debt [Line Items]
Loss on debt financing	2.4	$ 2.7
Long-term Debt
Extinguishment of Debt [Line Items]
Payments for merger related costs	$ 3.5

Debt - Leases and Other Financi

Debt - Leases and Other Financing Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Lease term (in years)	20 years
Rent expense	$ 21	$ 19.7	$ 18.1
Capital lease obligation	30.4	26.2
Other financing obligation	$ 1.8	$ 3.5

Debt - Maturities (Details)

Debt - Maturities (Details) $ in Thousands	Dec. 31, 2018USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2,019	$ 9,704
2,020	9,901
2,021	898,189
2,022	0
2,023	500,000
Thereafter	1,850,000
Total long-term debt principal payments	$ 3,267,794

Commitments and Contingencies -

Commitments and Contingencies - Future Minimum Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Capital Leases
2,019	$ 4,672
2,020	4,540
2,021	4,062
2,022	3,712
2,023	3,771
2024 and thereafter	36,327
Net minimum rentals	57,084
Less: interest portion	(24,395)
Present value of future minimum rentals	32,689
Other Financing Obligations
2,019	2,541
2,020	459
2,021	178
2,022	0
2,023	0
2024 and thereafter	0
Net minimum rentals	3,178
Less: interest portion	(392)
Present value of future minimum rentals	2,786
Operating Leases
2,019	16,621
2,020	12,319
2,021	9,688
2,022	7,707
2,023	6,471
2024 and thereafter	26,580
Net minimum rentals	79,386
Less: interest portion	0
Present value of future minimum rentals	79,386
Total
2,019	23,834
2,020	17,318
2,021	13,928
2,022	11,419
2,023	10,242
2024 and thereafter	62,907
Net minimum rentals	139,648
Less: interest portion	(24,787)
Present value of future minimum rentals	$ 114,861

Commitments and Contingencies_2

Commitments and Contingencies - Purchase Commitments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,019	$ 23,983
2,020	24,202
2,021	18,525
2,022	8,065
2,023	4,952
2024 and thereafter	39
Total purchase commitments	$ 79,766

Commitments and Contingencies_3

Commitments and Contingencies - Litigation (Details) $ in Millions	Dec. 31, 2018USD ($)
Metal Seal Precision, Ltd. v. Sensata Technologies Inc. | Maximum
Loss Contingencies [Line Items]
Estimate of possible loss	$ 51

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($)	Feb. 16, 2018	Dec. 31, 2018	Oct. 31, 2018	May 31, 2018	Mar. 28, 2018	Mar. 27, 2018	Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Ordinary shares authorized (in shares)		177,069,000			177,069,000	400,000,000	400,000,000
Reduction in retained earnings due to cancellation of treasury shares	$ 286,100,000
Authorized share repurchase amount			$ 250,000,000	$ 400,000,000		$ 250,000,000
Shares repurchased (in shares)		7,571
Purchase of treasury shares		$ 399,417,000					$ 288,478,000

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders equity, beginning of period	$ 2,345,626	$ 1,942,007	$ 1,668,576
Pre-tax current period change	48,634	(39,048)	(10,040)
Tax effect	(11,648)	9,951	1,963
Stockholders equity, end of period	2,608,434	2,345,626	1,942,007
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders equity, beginning of period	(28,179)	23	3,852
Pre-tax current period change	49,817	(37,603)	(5,106)
Tax effect	(12,454)	9,401	1,277
Stockholders equity, end of period	9,184	(28,179)	23
Defined Benefit and Retiree Healthcare Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders equity, beginning of period	(34,985)	(34,090)	(29,842)
Pre-tax current period change	(1,183)	(1,445)	(4,934)
Tax effect	806	550	686
Stockholders equity, end of period	(35,362)	(34,985)	(34,090)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Stockholders equity, beginning of period	(63,164)	(34,067)	(25,990)
Stockholders equity, end of period	$ (26,178)	$ (63,164)	$ (34,067)

Shareholders' Equity - Componen

Shareholders' Equity - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) before reclassifications	$ 24,739	$ (43,571)	$ (13,172)
Amounts reclassified from accumulated other comprehensive loss	12,247	14,474	5,095
Other comprehensive loss	36,986	(29,097)	(8,077)
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) before reclassifications	26,859	(39,387)	(6,356)
Amounts reclassified from accumulated other comprehensive loss	10,504	11,185	2,527
Other comprehensive loss	37,363	(28,202)	(3,829)
Defined Benefit and Retiree Healthcare Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) before reclassifications	(2,120)	(4,184)	(6,816)
Amounts reclassified from accumulated other comprehensive loss	1,743	3,289	2,568
Other comprehensive loss	$ (377)	$ (895)	$ (4,248)

Shareholders' Equity - Reclassi

Shareholders' Equity - Reclassification out of Accumulated Other Comprehensive Income (Loss) (Details) - 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
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Cost of revenue									2,266,863	2,138,898	2,084,159
Other, net									(30,365)	6,415	(5,093)
Restructuring and other charges, net					207	1,329	6,389	11,050		18,975	4,113
Income before taxes									526,375	402,441	321,445
(Benefit from)/provision for income taxes									72,620	5,916	(59,011)
Net income	$ 254,099	$ 149,118	$ 105,288	$ 90,490	$ 169,129	$ 88,035	$ 79,457	$ 71,736	598,995	408,357	262,434
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income before taxes									14,006	14,913	3,369
(Benefit from)/provision for income taxes									(3,502)	(3,728)	(842)
Net income									10,504	11,185	2,527
Defined Benefit and Retiree Healthcare Plans | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other, net									1,993	3,476	2,975
Restructuring and other charges, net									228	0	0
Income before taxes									2,221	3,476	2,975
(Benefit from)/provision for income taxes									(478)	(187)	(407)
Net income									1,743	3,289	2,568
Foreign currency forward contracts | Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net revenue									18,072	916	(17,720)
Cost of revenue									(5,442)	13,997	21,089
Other, net									$ 1,376	$ 0	$ 0

Acquisitions and Divestitures -

Acquisitions and Divestitures - Schedule of Assets Acquired and Liabilities Assumed (Details) $ in Thousands	Oct. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Oct. 30, 2018employee	Dec. 31, 2017USD ($)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 3,081,302		$ 3,005,464
Merger With GIGAVAC, LLC
Business Acquisition [Line Items]
Purchase price	$ 233,000
Consideration related to certain compensation arrangements	12,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Net working capital, excluding cash	16,980
Property, plant and equipment	4,384
Goodwill	114,638
Other intangible assets	122,742
Other assets	63
Deferred income tax liabilities	(27,000)
Other long-term liabilities	(1,000)
Fair value of net assets acquired, excluding cash and cash equivalents	230,807
Cash and cash equivalents	359
Fair value of net assets acquired	$ 231,166
GIGAVAC
Business Acquisition [Line Items]
Number of employees (more than) | employee			270

Acquisitions and Divestitures_2

Acquisitions and Divestitures - Acquired Intangible Assets and Weighted Average Useful Lives (Details) - USD ($) $ in Thousands	Oct. 31, 2018	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)		12 years
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)		11 years
Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted- Average Life (years)		21 years
Merger With GIGAVAC, LLC
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition Date Fair Value	$ 122,742
Weighted- Average Life (years)	12 years
Merger With GIGAVAC, LLC | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition Date Fair Value	$ 74,500
Weighted- Average Life (years)	10 years
Merger With GIGAVAC, LLC | Completed technologies
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition Date Fair Value	$ 31,040
Weighted- Average Life (years)	13 years
Merger With GIGAVAC, LLC | Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition Date Fair Value	$ 15,400
Weighted- Average Life (years)	15 years
Merger With GIGAVAC, LLC | Other
Acquired Finite-Lived Intangible Assets [Line Items]
Acquisition Date Fair Value	$ 1,802
Weighted- Average Life (years)	6 years

Acquisitions and Divestitures_3

Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, costs			$ 8,162	$ 0	$ 0
Valves Business | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Period of continuing involvement after disposal	5 years
Disposal group, consideration	$ 165,500
Disposal group, cash and cash equivalents	11,800
Gain on sale	(64,400)	$ (64,400)
Disposal group, costs	5,900	$ 5,900
Disposal group, liabilities	$ 16,400

Fair Value Measures - Schedule

Fair Value Measures - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - Significant Other Observable Inputs (Level 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 18,702	$ 10,413
Liabilities	9,302	42,073
Foreign currency forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	17,871	3,955
Liabilities	5,165	40,969
Commodity forward contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	831	6,458
Liabilities	$ 4,137	$ 1,104

Fair Value Measures - Narrative

Fair Value Measures - Narrative (Details) $ in Millions	Dec. 31, 2018USD ($)
Series B Preferred Stock | Quanergy Systems, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity investment	$ 50

Fair Value Measures - Balance S

Fair Value Measures - Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Term Loan | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 917,794	$ 927,794
4.875% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	4.875%
4.875% Senior Notes | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 500,000	500,000
5.625% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.625%
5.625% Senior Notes | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 400,000	400,000
5.0% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.00%
5.0% Senior Notes | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 700,000	700,000
6.25% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	6.25%
6.25% Senior Notes | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 750,000	750,000
Level 2 | Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	904,027	930,114
Level 2 | 4.875% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	491,875	521,875
Level 2 | 5.625% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	400,500	439,000
Level 2 | 5.0% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	660,625	741,125
Level 2 | 6.25% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities	$ 751,875	$ 813,750

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities - Schedule of Derivative Instruments (Details) - Dec. 31, 2018 € in Millions, ₩ in Millions, ¥ in Millions, £ in Millions, RM in Millions, $ in Millions, $ in Millions	USD ($)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	KRW (₩)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	CNY (¥)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	EUR (€)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	MXN ($)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	MYR (RM)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $	GBP (£)oztlb$ / lb$ / ozt$ / ¥$ / RM$ / $£ / $$ / ₩€ / $
Derivative [Line Items]
Foreign currency cash flow hedge gain (loss) to be reclassified during the next 12 months | $	$ 11.4
Derivatives not designated as hedging instruments under ASC 815 | Silver
Price Risk Derivatives [Abstract]
Notional | ozt	1,093,907	1,093,907	1,093,907	1,093,907	1,093,907	1,093,907	1,093,907
Weighted-Average Strike Price Per Unit | $ / ozt	16.42	16.42	16.42	16.42	16.42	16.42	16.42
Derivatives not designated as hedging instruments under ASC 815 | Gold
Price Risk Derivatives [Abstract]
Notional | ozt	9,859	9,859	9,859	9,859	9,859	9,859	9,859
Weighted-Average Strike Price Per Unit | $ / ozt	1,307.90	1,307.90	1,307.90	1,307.90	1,307.90	1,307.90	1,307.90
Derivatives not designated as hedging instruments under ASC 815 | Nickel
Price Risk Derivatives [Abstract]
Notional | lb	287,681	287,681	287,681	287,681	287,681	287,681	287,681
Weighted-Average Strike Price Per Unit | $ / lb	5.75	5.75	5.75	5.75	5.75	5.75	5.75
Derivatives not designated as hedging instruments under ASC 815 | Aluminum
Price Risk Derivatives [Abstract]
Notional | lb	2,350,172	2,350,172	2,350,172	2,350,172	2,350,172	2,350,172	2,350,172
Weighted-Average Strike Price Per Unit | $ / lb	0.97	0.97	0.97	0.97	0.97	0.97	0.97
Derivatives not designated as hedging instruments under ASC 815 | Copper
Price Risk Derivatives [Abstract]
Notional | lb	2,904,061	2,904,061	2,904,061	2,904,061	2,904,061	2,904,061	2,904,061
Weighted-Average Strike Price Per Unit | $ / lb	3.17	3.17	3.17	3.17	3.17	3.17	3.17
Derivatives not designated as hedging instruments under ASC 815 | Platinum
Price Risk Derivatives [Abstract]
Notional | ozt	9,095	9,095	9,095	9,095	9,095	9,095	9,095
Weighted-Average Strike Price Per Unit | $ / ozt	912.29	912.29	912.29	912.29	912.29	912.29	912.29
Derivatives not designated as hedging instruments under ASC 815 | Palladium
Price Risk Derivatives [Abstract]
Notional | ozt	1,001	1,001	1,001	1,001	1,001	1,001	1,001
Weighted-Average Strike Price Per Unit | $ / ozt	966.21	966.21	966.21	966.21	966.21	966.21	966.21
Euro to U.S. Dollar Exchange Rate | Derivatives designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | €				€ 341.5
Weighted- Average Strike Rate | € / $	1.22	1.22	1.22	1.22	1.22	1.22	1.22
Euro to U.S. Dollar Exchange Rate | Derivatives not designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | €				€ 44
Weighted- Average Strike Rate | € / $	1.14	1.14	1.14	1.14	1.14	1.14	1.14
U.S. Dollar to Chinese Renminbi Exchange Rate | Derivatives not designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | ¥			¥ 285
Weighted- Average Strike Rate | $ / ¥	6.91	6.91	6.91	6.91	6.91	6.91	6.91
U.S. Dollar to Korean Won Exchange Rate | Derivatives designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | ₩		₩ 31,275
Weighted- Average Strike Rate | $ / ₩	1,093.49	1,093.49	1,093.49	1,093.49	1,093.49	1,093.49	1,093.49
U.S. Dollar to Malaysian Ringgit Exchange Rate | Derivatives not designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | RM						RM 26.8
Weighted- Average Strike Rate | $ / RM	4.18	4.18	4.18	4.18	4.18	4.18	4.18
U.S. Dollar to Mexican Peso Exchange Rate | Derivatives designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | $					$ 2,713.2
Weighted- Average Strike Rate | $ / $	20.72	20.72	20.72	20.72	20.72	20.72	20.72
U.S. Dollar to Mexican Peso Exchange Rate | Derivatives not designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | $					$ 195
Weighted- Average Strike Rate | $ / $	19.86	19.86	19.86	19.86	19.86	19.86	19.86
British Pound Sterling to U.S. Dollar Exchange Rate | Derivatives designated as hedging instruments under ASC 815 | Foreign currency forward contracts
Interest Rate Derivatives [Abstract]
Notional (in millions) | £							£ 48.5
Weighted- Average Strike Rate | £ / $	1.34	1.34	1.34	1.34	1.34	1.34	1.34

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities - Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives designated as hedging instruments under ASC 815
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 17,776	$ 3,949
Liability Derivatives, Fair Value	4,749	39,687
Derivatives not designated as hedging instruments under ASC 815
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	926	6,464
Liability Derivatives, Fair Value	4,553	2,386
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	14,608	3,576
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	3,168	373
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	3,615	32,806
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	1,134	6,881
Foreign currency forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	95	6
Foreign currency forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	416	1,282
Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	524	5,403
Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	307	1,055
Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	3,679	1,006
Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 458	$ 98

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities - Income Statement Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Net revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Deferred Gain/(Loss) Recognized in Other Comprehensive Income/(Loss)	$ 30,752	$ (68,071)
Amount of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income	(18,072)	(916)
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Cost of revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Deferred Gain/(Loss) Recognized in Other Comprehensive Income/(Loss)	5,059	15,555
Amount of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income	5,442	(13,997)
Foreign currency forward contracts | Derivatives designated as hedging instruments under ASC 815 | Other, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Deferred Gain/(Loss) Recognized in Other Comprehensive Income/(Loss)	0	0
Amount of Net (Loss)/Gain Reclassified from Accumulated Other Comprehensive Loss into Net Income	(1,376)	0
Foreign currency forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Other, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Net Income	3,446	(15,618)
Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815 | Other, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Net Income	$ (8,481)	$ 9,989

Derivative Instruments and He_6

Derivative Instruments and Hedging Activities - Credit Risk Related Contingent Features (Details)	Dec. 31, 2018USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Termination value	$ 9,400,000
Cash collateral posted	$ 0

Segment Reporting - Schedules o

Segment Reporting - Schedules of Segment Reporting (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2018USD ($)segmentproduct_category	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Number of segments | segment									2
Number of product categories | product_category									4
Segment Reconciliation [Abstract]
Net revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Amortization of intangible assets									(139,326)	(161,050)	(201,498)
Restructuring and other charges, net					(207)	$ (1,329)	$ (6,389)	$ (11,050)		(18,975)	(4,113)
Profit from operations									710,419	555,787	492,356
Interest expense, net									(153,679)	(159,761)	(165,818)
Other, net									(30,365)	6,415	(5,093)
Income before taxes									526,375	402,441	321,445
Depreciation and amortization:									245,340	270,371	308,401
Assets:	6,797,687				6,641,525				6,797,687	6,641,525
Goodwill	3,081,302				3,005,464				3,081,302	3,005,464
Other intangible assets, net	897,191				920,124				897,191	920,124
Cash and cash equivalents	729,833				753,089				729,833	753,089	351,428	$ 342,263
Property, plant and equipment, net	787,178				750,049				787,178	750,049
Additions to property, plant and equipment and capitalized software:									159,787	144,584	130,217
Performance Sensing
Segment Reconciliation [Abstract]
Net revenue									2,627,651	2,460,600	2,385,380
Goodwill	2,155,633				2,148,135				2,155,633	2,148,135
Sensing Solutions
Segment Reconciliation [Abstract]
Net revenue									893,976	846,133	816,908
Goodwill	925,669				857,329				925,669	857,329
Sensors
Segment Reconciliation [Abstract]
Net revenue									2,755,280	2,542,863	2,455,476
Controls
Segment Reconciliation [Abstract]
Net revenue									508,745	497,853	486,207
Other
Segment Reconciliation [Abstract]
Net revenue									257,602	266,017	260,605
Operating Segments
Segment Reconciliation [Abstract]
Net revenue									3,521,627	3,306,733	3,202,288
Profit from operations									1,005,691	941,636	877,440
Operating Segments | Performance Sensing
Segment Reconciliation [Abstract]
Net revenue									2,627,651	2,460,600	2,385,380
Profit from operations									712,682	664,186	615,526
Depreciation and amortization:									72,067	68,910	68,837
Assets:	1,490,310				1,396,565				1,490,310	1,396,565
Additions to property, plant and equipment and capitalized software:									130,234	106,520	99,299
Operating Segments | Sensing Solutions
Segment Reconciliation [Abstract]
Net revenue									893,976	846,133	816,908
Profit from operations									293,009	277,450	261,914
Depreciation and amortization:									16,798	17,179	14,095
Assets:	468,131				424,237				468,131	424,237
Additions to property, plant and equipment and capitalized software:									12,492	13,980	11,947
Corporate and other
Segment Reconciliation [Abstract]
Profit from operations									(203,764)	(205,824)	(179,473)
Depreciation and amortization:									156,475	184,282	225,469
Assets:	4,839,246				4,820,723				4,839,246	4,820,723
Goodwill	3,081,300				3,005,500				3,081,300	3,005,500
Other intangible assets, net	897,200				920,100				897,200	920,100
Property, plant and equipment, net	$ 36,500				$ 36,100				36,500	36,100
Additions to property, plant and equipment and capitalized software:									17,061	24,084	18,971
Segment Reconciling Items
Segment Reconciliation [Abstract]
Amortization of intangible assets									(139,326)	(161,050)	(201,498)
Restructuring and other charges, net									$ 47,818	$ (18,975)	$ (4,113)

Segment Reporting - Geographic

Segment Reporting - Geographic Information (Details) - 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
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue	$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Long-Lived Assets	787,178				750,049				787,178	750,049
Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									1,480,567	1,367,113	1,367,860
Long-Lived Assets	292,625				296,863				292,625	296,863
Asia and rest of world
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									1,012,526	903,118	810,094
Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	309,542				266,524				309,542	266,524
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									1,028,534	1,036,502	1,024,334
Long-Lived Assets	185,011				186,662				185,011	186,662
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									1,360,590	1,276,304	1,322,206
Long-Lived Assets	83,664				95,603				83,664	95,603
Netherlands
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									585,036	571,735	550,937
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									560,938	478,713	412,460
Long-Lived Assets	239,315				211,566				239,315	211,566
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									188,114	184,101	182,464
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									163,963	174,376	171,206
Long-Lived Assets	51,404				63,310				51,404	63,310
All other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Revenue									662,986	621,504	$ 563,015
Long-Lived Assets	23,078				34,412				23,078	34,412
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	204,552				196,813				204,552	196,813
Malaysia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	65,688				50,783				65,688	50,783
Bulgaria
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 119,477				$ 97,562				$ 119,477	$ 97,562

Unaudited Quarterly Data (Detai

Unaudited Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 31, 2018	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 [Line Items]
Net revenue		$ 847,922	$ 873,552	$ 913,860	$ 886,293	$ 840,534	$ 819,054	$ 839,874	$ 807,271	$ 3,521,627	$ 3,306,733	$ 3,202,288
Gross profit		304,359	315,218	331,351	303,836	301,799	291,815	299,369	274,852
Net income		$ 254,099	$ 149,118	$ 105,288	$ 90,490	$ 169,129	$ 88,035	$ 79,457	$ 71,736	$ 598,995	$ 408,357	$ 262,434
Basic net income per share (in dollars per share)		$ 1.55	$ 0.89	$ 0.61	$ 0.53	$ 0.99	$ 0.51	$ 0.46	$ 0.42	$ 3.55	$ 2.39	$ 1.54
Diluted net income per share (in dollars per share)		$ 1.54	$ 0.88	$ 0.61	$ 0.52	$ 0.98	$ 0.51	$ 0.46	$ 0.42	$ 3.53	$ 2.37	$ 1.53
Disposal group, costs										$ 8,162	$ 0	$ 0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount										123,426	3,368	(30,565)
Tax benefit from tax cut						$ 73,700				0	73,668	0
Gain/(loss) on commodity forward contracts										(8,481)	9,989	7,399
Severance costs		$ 870	$ (52,698)	$ 244	$ 3,766					7,566	11,125	813
Restructuring and other charges, net						207	$ 1,329	$ 6,389	$ 11,050		18,975	$ 4,113
Other, net | Commodity forward contracts | Derivatives not designated as hedging instruments under ASC 815
Quarterly Financial Information [Line Items]
Gain/(loss) on commodity forward contracts		373	(4,233)	(1,426)	(3,195)	3,550	2,956	(1,957)	5,440
Cross Border Merger
Quarterly Financial Information [Line Items]
Cross-border charges		0	0	$ 1,766	$ 2,352	$ 2,059	$ 3,518	$ 1,020	$ 0
Merger With GIGAVAC, LLC
Quarterly Financial Information [Line Items]
Purchase price		12,600
Valves Business | Disposal Group, Held-for-sale, Not Discontinued Operations
Quarterly Financial Information [Line Items]
Gain on sale	$ (64,400)		(64,400)
Disposal group, costs	$ 5,900		$ 5,900
Valves Business | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Quarterly Financial Information [Line Items]
Disposal group, costs										5,900
Merger With GIGAVAC, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Merger With GIGAVAC, LLC
Quarterly Financial Information [Line Items]
Disposal group, costs		2,500
US Federal
Quarterly Financial Information [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ (122,100)								$ (120,300)	$ (22,400)

Schedule I - Condensed Financ_2

Schedule I - Condensed Financial Information of the Registrant (Details) - 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	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 729,833			$ 753,089	$ 753,089			$ 351,428	$ 753,089	$ 351,428	$ 342,263	$ 729,833	$ 753,089	$ 351,428	$ 342,263
Prepaid expenses and other current assets												113,234	92,532
Total current assets												1,917,155	1,848,291
Total assets												6,797,687	6,641,525
Current liabilities:
Accounts payable												379,824	322,671
Accrued expenses and other current liabilities												218,130	259,560
Total current liabilities												639,944	629,495
Pension obligations												33,958	40,055
Total liabilities												4,189,253	4,295,899
Total shareholders’ equity												2,608,434	2,345,626	1,942,007	1,668,576
Total liabilities and shareholders’ equity												6,797,687	6,641,525
Income Statement [Abstract]
Net revenue	847,922	$ 873,552	$ 913,860	886,293	840,534	$ 819,054	$ 839,874	807,271	3,521,627	3,306,733	3,202,288
Operating costs and expenses:
Selling, general and administrative									305,558	301,896	293,506
Total operating costs and expenses									2,811,208	2,750,946	2,709,932
Profit from operations									710,419	555,787	492,356
Interest expense, net									(153,679)	(159,761)	(165,818)
Other, net									(30,365)	6,415	(5,093)
Income before taxes									526,375	402,441	321,445
(Benefit from)/provision for income taxes									(72,620)	(5,916)	59,011
Other comprehensive income/(loss), net of tax:
Defined benefit plan									(377)	(895)	(4,248)
Other comprehensive loss									36,986	(29,097)	(8,077)
Statement of Cash Flows [Abstract]
Net cash used in operating activities									620,563	557,646	521,525
Net cash used in investing activities									(237,606)	(140,722)	(174,778)
Proceeds from exercise of stock options and issuance of ordinary shares									6,093	7,450	3,944
Payments to repurchase ordinary shares									(399,417)	0	0
Payment of employee restricted stock tax withholdings									3,674	2,910	4,752
Net cash used in financing activities									(406,213)	(15,263)	(337,582)
Net change in cash and cash equivalents									(23,256)	401,661	9,165
Cash and cash equivalents, beginning of year				753,089				351,428	753,089	351,428	342,263
Cash and cash equivalents, end of year	729,833				753,089				729,833	753,089	351,428
Parent Company
Current assets:
Cash and cash equivalents	1,089			2,150	2,150			1,719	2,150	1,719	1,283	1,089	2,150	$ 1,719	$ 1,283
Intercompany receivables from subsidiaries												0	94,094
Prepaid expenses and other current assets												528	643
Total current assets												1,617	96,887
Investment in subsidiaries												2,932,218	2,258,559
Total assets												2,933,835	2,355,446
Current liabilities:
Accounts payable												58	608
Intercompany payables to subsidiaries												323,561	7,465
Accrued expenses and other current liabilities												1,782	1,219
Total current liabilities												325,401	9,292
Pension obligations												0	528
Total liabilities												325,401	9,820
Total shareholders’ equity												2,608,434	2,345,626
Total liabilities and shareholders’ equity												$ 2,933,835	$ 2,355,446
Income Statement [Abstract]
Net revenue									0	0	0
Operating costs and expenses:
Selling, general and administrative									10,153	6,894	104
Total operating costs and expenses									10,153	6,894	104
Profit from operations									(10,153)	(6,894)	(104)
Interest expense, net									(4,709)	8	72
Other, net									474	(169)	107
Income before taxes									(14,388)	(7,055)	75
Equity in net income of subsidiaries									613,383	415,412	262,359
(Benefit from)/provision for income taxes									0	0	0
Net income									598,995	408,357	262,434
Statement of Comprehensive Income [Abstract]
Net income									598,995	408,357	262,434
Other comprehensive income/(loss), net of tax:
Defined benefit plan									535	77	515
Subsidiaries' other comprehensive income/(loss)									36,451	(29,174)	(8,592)
Other comprehensive loss									36,986	(29,097)	(8,077)
Comprehensive income									635,981	379,260	254,357
Statement of Cash Flows [Abstract]
Net cash used in operating activities									(14,253)	(9,109)	(4,756)
Return of capital from subsidiaries									0	5,000	6,000
Net cash used in investing activities									0	5,000	6,000
Proceeds from exercise of stock options and issuance of ordinary shares									6,093	7,450	3,944
Proceeds from intercompany borrowings									410,190	0	0
Payments to repurchase ordinary shares									(399,417)	0	0
Payment of employee restricted stock tax withholdings									(3,674)	(2,910)	(4,752)
Net cash used in financing activities									13,192	4,540	(808)
Net change in cash and cash equivalents									(1,061)	431	436
Cash and cash equivalents, beginning of year				$ 2,150				$ 1,719	2,150	1,719	1,283
Cash and cash equivalents, end of year	$ 1,089				$ 2,150				$ 1,089	$ 2,150	$ 1,719

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - Accounts receivable allowances - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at the Beginning of the Period	$ 12,947	$ 11,811	$ 9,535
Additions, Charged to expenses/against revenue	2,194	2,205	3,072
Deductions	(1,379)	(1,069)	(796)
Balance at the End of the Period	$ 13,762	$ 12,947	$ 11,811