Westinghouse Air Brake Technologies (WAB) 10-K 27 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	Feb. 20, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP
Entity Central Index Key	943,452
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
Trading Symbol	WAB
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		96,613,310
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 8.5

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 580,908	$ 233,401
Restricted cash	1,761,446	0
Accounts receivable	801,193	800,619
Unbilled accounts receivable	345,585	366,168
Inventories	844,886	742,634
Other assets	115,649	122,291
Total current assets	4,449,667	2,265,113
Property, plant and equipment	1,036,550	1,026,046
Accumulated depreciation	(472,813)	(452,074)
Property, plant and equipment, net	563,737	573,972
Other Assets
Goodwill	2,396,544	2,460,103
Other intangibles, net	1,129,880	1,204,432
Other noncurrent assets	109,406	76,360
Total other assets	3,635,830	3,740,895
Total Assets	8,649,234	6,579,980
Current Liabilities
Accounts payable	589,449	552,525
Customer deposits	373,538	369,716
Accrued compensation	173,183	164,210
Accrued warranty	135,636	137,542
Current portion of long-term debt	64,099	47,225
Other accrued liabilities	310,785	302,112
Total current liabilities	1,646,690	1,573,330
Long-term debt	3,792,774	1,823,303
Accrued postretirement and pension benefits	95,446	103,734
Deferred income taxes	198,269	175,902
Accrued warranty	18,066	15,521
Other long-term liabilities	28,914	59,658
Total liabilities	5,780,159	3,751,448
Commitment and Contingencies (Note 21)
Equity
Preferred stock, 1,000,000 shares authorized, no shares issued	0	0
Common stock, $.01 par value; 500,000,000 and 200,000,000 shares authorized: 132,349,534 shares issued and 96,614,946 and 96,034,352 outstanding at December 31, 2018 and December 31, 2017, respectively	1,323	1,323
Additional paid-in capital	914,568	906,616
Treasury stock, at cost, 35,734,588 and 36,315,182 shares, at December 31, 2018 and December 31, 2017, respectively	(816,145)	(827,379)
Retained earnings	3,021,968	2,773,300
Accumulated other comprehensive loss	(256,583)	(44,992)
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	2,865,131	2,808,868
Noncontrolling interest	3,944	19,664
Total equity	2,869,075	2,828,532
Total Liabilities and Equity	$ 8,649,234	$ 6,579,980

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	500,000,000	200,000,000
Common stock, shares issued (in shares)	132,349,534	132,349,534
Common stock, shares outstanding (in shares)	96,614,946	96,034,352
Treasury stock, shares (in shares)	35,734,588	36,315,182

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ 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 sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Cost of sales									(3,129,662)	(2,816,443)	(2,006,949)
Gross profit	297,025	302,012	323,967	310,881	268,440	253,203	273,963	269,707	1,233,885	1,065,313	924,239
Selling, general and administrative expenses									(633,244)	(512,552)	(373,559)
Engineering expenses									(87,450)	(95,166)	(71,375)
Amortization expense									(39,754)	(36,516)	(22,698)
Total operating expenses									(760,448)	(644,234)	(467,632)
Income from operations	93,456	125,179	123,523	131,279	91,545	101,666	113,356	114,512	473,437	421,079	456,607
Other income and expenses
Interest expense, net									(112,235)	(77,884)	(50,298)
Other income, net									6,380	8,868	6,528
Income from operations before income taxes									367,582	352,063	412,837
Income tax expense									(75,879)	(89,773)	(99,433)
Net income									291,703	262,290	313,404
Less: Net loss (income) attributable to noncontrolling interest									3,241	(29)	(8,517)
Net income attributable to Wabtec shareholders	$ 34,423	$ 87,739	$ 84,416	$ 88,366	$ 48,948	$ 67,399	$ 72,025	$ 73,889	$ 294,944	$ 262,261	$ 304,887
Basic
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.36	$ 0.91	$ 0.88	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.06	$ 2.74	$ 3.37
Diluted
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.36	$ 0.91	$ 0.87	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.05	$ 2.72	$ 3.34
Weighted average shares outstanding
Basic (in shares)									95,994	95,453	90,359
Diluted (in shares)									96,464	96,125	91,141

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income attributable to Wabtec shareholders	$ 294,944	$ 262,261	$ 304,887
Foreign currency translation gain (loss)	(207,267)	326,096	(93,684)
Unrealized gain (loss) on derivative contracts	(5,307)	9,799	305
Unrealized gain (loss) on pension benefit plans and post-retirement benefit plans	(3,774)	2,845	(12,021)
Other comprehensive gain (loss) before tax	(216,348)	338,740	(105,400)
Income tax (expense) benefit related to components of other comprehensive loss	4,757	(4,127)	2,514
Other comprehensive income (loss), net of tax	(211,591)	334,613	(102,886)
Comprehensive income attributable to Wabtec shareholders	$ 83,353	$ 596,874	$ 202,001

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net income	$ 291,703	$ 262,290	$ 313,404
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization	109,297	103,248	69,795
Stock-based compensation expense	25,315	21,287	20,813
Deferred income taxes	(5,299)	(67,423)	(10,228)
Loss on disposal of property, plant and equipment	898	1,907	232
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable and unbilled accounts receivable	(54,611)	(68,676)	19,728
Inventories	(108,883)	(8,955)	45,340
Accounts payable	48,763	(91,722)	(18,932)
Accrued income taxes	7,880	47,644	(11,759)
Accrued liabilities and customer deposits	31,744	(18,891)	(11,338)
Other assets and liabilities	(32,136)	8,102	33,475
Net cash provided by operating activities	314,671	188,811	450,530
Investing Activities
Purchase of property, plant and equipment	(93,305)	(89,466)	(50,216)
Proceeds from disposal of property, plant and equipment	11,293	1,291	363
Acquisitions of business, net of cash acquired	(51,153)	(945,299)	(183,113)
Other	(14,122)	0	0
Net cash used for investing activities	(147,287)	(1,033,474)	(232,966)
Financing Activities
Proceeds from debt, net of issuance costs	3,480,702	1,216,740	1,875,000
Payments of debt	(1,453,954)	(1,269,537)	(1,102,748)
Stock re-purchase	0	0	(212,176)
Proceeds from exercise of stock options and other benefit plans	9,962	4,428	1,983
Payment of income tax withholding on share-based compensation	(12,322)	(6,844)	(6,658)
Cash dividends	(46,277)	(42,218)	(32,430)
Net cash provided by (used for) financing activities	1,978,111	(97,431)	522,971
Effect of changes in currency exchange rates	(36,542)	32,263	(26,436)
Increase (decrease) in cash	2,108,953	(909,831)	714,099
Cash, cash equivalents and restricted cash, beginning of year	233,401	1,143,232	429,133
Cash, cash equivalents and restricted cash, end of year	$ 2,342,354	$ 233,401	$ 1,143,232

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Cash dividends, per share (in dollars per share)	$ 0.48	$ 0.44	$ 0.36

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2015		132,349,534		(40,513,428)
Balance beginning of period at Dec. 31, 2015	$ 1,701,339	$ 1,323	$ 469,326	$ (775,124)	$ 2,280,801	$ (276,719)	$ 1,732
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends	(32,430)				(32,430)
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax	(3,452)		(8,490)	$ 5,038
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax, shares (in shares)				328,245
Stock based compensation	17,748		17,748
Non-controlling interests associated with Faiveley Transport Acquisition	760,599						760,599
Net income (loss)	313,404				304,887		8,517
Other comprehensive loss, net of tax	(102,886)					(102,886)
Stock issued for Faiveley Transport Acquisition	534,679		391,367	$ 143,312
Stock issued for Faiveley Transport Acquisition (in shares)				6,307,489
Stock repurchase, shares (in shares)				(3,046,408)
Stock repurchase, value	(212,176)			$ (212,176)
Ending Balance (in shares) at Dec. 31, 2016		132,349,534		(36,924,102)
Balance end of period at Dec. 31, 2016	2,976,825	$ 1,323	869,951	$ (838,950)	2,553,258	(379,605)	770,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends	(42,218)				(42,218)
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax	(2,416)		(7,361)	$ 4,945
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax, shares (in shares)				608,920
Stock based compensation	16,650		16,650
Acquisition of Faiveley Transport noncontrolling interest	(742,282)		8,931				(751,213)
Net income (loss)	262,290				262,261		29
Other comprehensive loss, net of tax	334,613					334,613
Stock issued for Faiveley Transport Acquisition	25,071		18,445	$ 6,626
Ending Balance (in shares) at Dec. 31, 2017		132,349,534		(36,315,182)
Balance end of period at Dec. 31, 2017	2,828,532	$ 1,323	906,616	$ (827,379)	2,773,300	(44,992)	19,664
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends	(46,277)				(46,277)
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax	(2,360)		(13,594)	$ 11,234
Proceeds from treasury stock issued from the exercise of stock options and other benefit plans, net of tax, shares (in shares)				580,594
Stock based compensation	21,546		21,546
Net income (loss)	291,703				294,944		(3,241)
Other comprehensive loss, net of tax	(211,591)					(211,591)
Other owner changes	(12,479)						(12,479)
Ending Balance (in shares) at Dec. 31, 2018		132,349,534		(35,734,588)
Balance end of period at Dec. 31, 2018	$ 2,869,075	$ 1,323	$ 914,568	$ (816,145)	$ 3,021,968	$ (256,583)	$ 3,944

CONSOLIDATED STATEMENTS OF SH_2

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends, per share (in dollars per share)	$ 0.48	$ 0.44	$ 0.36

BUSINESS

BUSINESS	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BUSINESS	BUSINESS Wabtec is one of the world’s largest providers of value-added, technology-based equipment, systems and services for the global passenger transit and freight rail industries. Our highly engineered products, which are intended to enhance safety, improve productivity and reduce maintenance costs for customers, can be found on most locomotives, freight cars, passenger transit cars and buses around the world. Our products enhance safety, improve productivity and reduce maintenance costs for customers, and many of our core products and services are essential in the safe and efficient operation of freight rail and passenger transit vehicles. Wabtec is a global company with operations in 30 countries and our products can be found in more than 100 countries throughout the world. In 2018 , about 67% of the Company’s revenues came from customers outside the U.S.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The consolidated financial statements include the accounts of the Company and all subsidiaries that it controls. For consolidated subsidiaries in which the Company's ownership is less than 100%, the outside shareholders' interests are shown as noncontrolling interests. These statements have been prepared in accordance with U.S. generally accepted accounting principles. Sales between subsidiaries are billed at prices consistent with sales to third parties and are eliminated in consolidation. Cash Equivalents Cash equivalents are highly liquid investments purchased with an original maturity of three months or less. Allowance for Doubtful Accounts The allowance for doubtful accounts receivable reflects our best estimate of probable losses inherent in our receivable portfolio determined on the basis of historical experience, specific allowances for known troubled accounts and other currently available evidence. The allowance for doubtful accounts was $16.9 million and $12.3 million as of December 31, 2018 and 2017 , respectively. Inventories Inventories are stated at the lower of cost or market. Cost is determined under the first-in, first-out (FIFO) method. Inventory costs include material, labor and overhead. Property, Plant and Equipment Property, plant and equipment additions are stated at cost. Expenditures for renewals and improvements are capitalized. Expenditures for ordinary maintenance and repairs are expensed as incurred. The Company computes book depreciation principally on the straight-line method. Accelerated depreciation methods are utilized for income tax purposes. Leasing Arrangements The Company conducts a portion of its operations from leased facilities and finances certain equipment purchases through lease agreements. In those cases in which the lease term approximates the useful life of the leased asset or the lease meets certain other prerequisites, the leasing arrangement is classified as a capital lease. The remaining arrangements are treated as operating leases. Goodwill and Intangible Assets Goodwill and other intangible assets with indefinite lives are not amortized. Other intangibles (with definite lives) are amortized on a straight-line basis over their estimated economic lives. Amortizable intangible assets are reviewed for impairment when indicators of impairment are present. The Company tests goodwill and indefinite-lived intangible assets for impairment at the reporting unit level and at least annually. The Company performs its annual impairment test during the fourth quarter after the annual forecasting process is completed, and also tests for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Periodically, Management of the Company assesses whether or not an indicator of impairment is present that would necessitate an impairment analysis be performed. For 2018, the Company opted to proceed directly to the quantitative impairment test for all reporting units with goodwill. In the first step of the quantitative assessment, our assets and liabilities, including existing goodwill and other intangible assets, are assigned to the identified reporting units to determine the carrying value of the reporting units. The income approach and the market approach are weighted at 50% and 50%, respectively, in arriving at fair value. The discounted cash flow model requires several assumptions including future sales growth, EBIT (earnings before interest and taxes) margins and capital expenditures for the reporting units. The discounted cash flow model also requires the use of a discount rate and a terminal revenue growth rate (the revenue growth rate for the period beyond the years forecasted by the reporting units), as well as projections of future operating margins. The market approach requires several assumptions including EBITDA (earnings before interest, taxes, depreciation and amortization) multiples for comparable companies that operate in the same markets as the Company’s reporting units. The estimated fair value of all reporting units was in excess of its respective carrying value, which resulted in a conclusion that no impairment existed. Additionally, the Company proceeded directly to the quantitative impairment test for some trade names with indefinite lives. The fair value of all trade names subject to the quantitative impairment test exceeded its respective carrying value, resulting in a conclusion that no impairment existed. For trade names not subject to the quantitative testing, the Company opted to perform a qualitative trade name impairment assessment and determined from the qualitative assessment that it was not more likely than not that the estimated fair values of the trade names were less than their carrying values; therefore, no further analysis was required. In assessing the qualitative factors to determine whether it is more likely than not that the fair value of a trade name is less than its carrying amount, we assess relevant events and circumstances that may impact the fair value and the carrying amount of the trade name. The identification of relevant events and circumstances and how these may impact a trade name’s fair value or carrying amount involve significant judgments and assumptions. The judgment and assumptions include the identification of macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, Wabtec specific events, share price trends and making the assessment on whether each relevant factor will impact the impairment test positively or negatively and the magnitude of any such impact. Warranty Costs Warranty costs are accrued based on Management’s estimates of repair or upgrade costs per unit and historical experience. Warranty expense was $58.0 million , $50.4 million and $28.9 million for 2018 , 2017 and 2016 , respectively. Accrued warranty was $153.7 million and $153.1 million at December 31, 2018 and 2017 , respectively. Income Taxes Income taxes are accounted for under the liability method. Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws. The provision for income taxes includes federal, state and foreign income taxes. Stock-Based Compensation The Company recognizes compensation expense for stock-based compensation based on the grant date fair value amortized ratably over the requisite service period following the date of grant. Financial Derivatives and Hedging Activities The Company uses forward contracts to mitigate its foreign currency exchange rate exposure. Foreign currency forward contracts are agreements with a counterparty to exchange two distinct currencies at a set exchange rate for delivery on a set date at some point in the future. There is no exchange of funds until the delivery date. At the delivery date, the Company can either take delivery of the currency or settle on a net basis. For further information regarding the foreign currency forward contracts, see Footnote 19. The Company uses interest rate swaps to manage interest rate exposures, The Company entered into an interest rate swap agreement with a notional value of $150 million . As of December 19, 2018, the interest swap agreement has expired. For further information regarding the interest rate swap agreement, see Footnote 19. Foreign Currency Translation Assets and liabilities of foreign subsidiaries, except for the Company’s Mexican operations whose functional currency is the U.S. Dollar, are translated at the rate of exchange in effect on the balance sheet date while income and expenses are translated at the average rates of exchange prevailing during the period. Foreign currency gains and losses resulting from transactions, and the translation of financial statements are recorded in the Company’s consolidated financial statements based upon the provisions of Accounting Standards Codification (“ASC”) 830, “Foreign Currency Matters.” The effects of currency exchange rate changes on intercompany transactions and balances of a long-term investment nature are accumulated and carried as a component of accumulated other comprehensive loss. The effects of currency exchange rate changes on intercompany transactions that are denominated in a currency other than an entity’s functional currency are charged or credited to earnings. Foreign exchange transaction losses recognized in other income, net were $5.7 million , $6.6 million and $4.0 million for 2018 , 2017 and 2016 , respectively. Noncontrolling Interests In accordance with ASC 810, the Company has classified noncontrolling interests as equity on our condensed consolidated balance sheets as of December 31, 2018 and 2017 . Net loss attributable to noncontrolling interests was $3.2 million for the year ended December 31, 2018 . Net income attributable to noncontrolling interest was $8.5 million for the year ended December 31, 2016. Net income attributable to noncontrolling interests for the year ended December 31, 2017 was not material. Revenue Recognition On January 1, 2018, the Company adopted ASC 606 “Revenue from Contracts with Customers”. This new guidance provides a five-step analysis of transactions to determine when and how revenue is recognized and requires entities to recognize revenue at an amount that reflects the consideration to which the Company expects to be entitled in exchange for transferring goods or services to a customer. Approximately 75% of the Company’s revenues are derived from performance obligations that are satisfied at a point in time when control passes to the customer which is generally at the time of shipment in accordance with agreed upon delivery terms. The remaining revenues are earned over time. This approach is consistent with our revenue recognition approach in prior years. The Company also has long-term customer agreements involving the design and production of highly engineered products that require revenue to be recognized over time because these products have no alternative use without significant economic loss and the agreements contain an enforceable right to payment including a reasonable profit margin from the customer in the event of contract termination. Additionally, the Company has customer agreements involving the creation or enhancement of an asset that the customer controls which also require revenue to be recognized over time. This approach is consistent with our revenue recognition approach in prior years. Generally, the Company uses an input method for determining the amount of revenue, cost and gross margin to recognize over time for these customer agreements. The input methods used for these agreements include costs of material and labor, both of which give an accurate representation of the progress made toward complete satisfaction of a particular performance obligation. Contract revenues and cost estimates are reviewed and revised quarterly at a minimum and adjustments are reflected in the accounting period as such amounts are determined. Contract assets include unbilled amounts resulting from sales under long-term contracts where revenue is recognized over time and revenue exceeds the amount that can be billed to the customer based on the terms of the contract. Contract assets are classified as current assets under the caption “Unbilled Accounts Receivable” on the consolidated balance sheet. The Company has elected to use the practical expedient and not consider unbilled amounts anticipated to be paid within one year as significant financing components. Contract liabilities include customer deposits that are made prior to the incurrence of costs related to a newly agreed upon contract and advanced customer payments that are in excess of revenue recognized. These contract liabilities are classified as current liabilities under the caption “Customer Deposits” on the consolidated balance sheet. These contract liabilities are not considered a significant financing component because they are used to meet working capital demands that can be higher in the early stages of a contract and revenue associated with the contract liabilities is expected to be recognized within one year. Contract liabilities also include provisions for estimated losses from uncompleted contracts. Provisions for loss contracts were $71.2 million and $94.0 million at December 31, 2018 and 2017, respectively. These provisions for estimated losses are classified as current liabilities and included within the caption “Other accrued liabilities” on the consolidated balance sheet. Due to the nature of work required to be performed on the Company’s long-term projects, the estimation of total revenue and cost at completion is subject to many variables and requires significant judgment. Contract estimates related to long-term projects are based on various assumptions to project the outcome of future events that could span several years. These assumptions include cost of materials; labor availability and productivity; complexity of the work to be performed; and the performance of suppliers, customers and subcontractors that may be associated with the contract. We have a disciplined quarterly estimate-at-completion process where management reviews the progress of long term-projects. As part of this process, management reviews information including key contract matters, progress towards completion, identified risks and opportunities and any other information that could impact the Company’s estimates of revenue and costs. After completing this analysis, any quarterly adjustments to net sales, cost of goods sold, and the related impact to operating income are recognized as necessary in the period they become known. Generally, the Company’s revenue contains a single performance obligation for each distinct good. Pricing is defined in our contracts on a line item basis and includes an estimate of variable consideration when required by the terms of the individual customer contract. Types of variable consideration that the Company typically has include volume discounts, prompt payment discounts, liquidating damages, and performance bonuses. Sales returns and allowances are also estimated and recognized in the same period the related revenue is recognized, based upon the Company’s experience. Remaining performance obligations represent transaction price of firm customer orders subject to standard industry cancellation provisions and substantial scope-of-work adjustments. As of December 31, 2018 , the Company's remaining performance obligations were $4.5 billion . The Company expects to recognize revenue of approximately 55% of remaining performance obligations over the next 12 months, with the remainder recognized thereafter. Letters of Credit In the ordinary course of its business, the Company issues letters of credit related to commercial products. The outstanding amount, including the letters of credit issues under the credit facility, were $354.2 million and $364.6 million at December 31, 2018 and 2017 , respectively. Pre-Production Costs Certain pre-production costs relating to long-term production and supply contracts have been deferred and will be recognized over the life of the contracts. Deferred pre-production costs were $16.4 million and $20.2 million at December 31, 2018 and 2017 , respectively. Significant Customers and Concentrations of Credit Risk The Company’s trade receivables are from rail and transit industry original equipment manufacturers, Class I railroads, railroad carriers and commercial companies that utilize rail cars in their operations, such as utility and chemical companies. No one customer accounted for more than 10% of the Company’s consolidated net sales in 2018 , 2017 or 2016 . Shipping and Handling Fees and Costs All fees billed to the customer for shipping and handling are classified as a component of net revenues. All costs associated with shipping and handling are classified as a component of cost of sales. Research and Development Research and development costs are charged to expense as incurred. For the years ended December 31, 2018 , 2017 and 2016 , the Company incurred costs of approximately $87.5 million , $95.2 million , and $71.4 million , respectively. Earnings Per Share Basic and diluted earnings per common share is computed in accordance with ASC 260 “Earnings Per Share.” Unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and included in the computation of earnings per share pursuant to the two-class method included in ASC 260-10-55 (See Note 13 “Earnings Per Share” included herein). Reclassifications Certain prior year amounts have been reclassified, where necessary, to conform to the current year presentation. Refer to Recently Adopted Accounting Pronouncements below. Use of Estimates The preparation of financial statements in conformity with generally accepted accounting principles in the United States requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual amounts could differ materially from the estimates. On an ongoing basis, Management reviews its estimates based on currently available information. Changes in facts and circumstances may result in revised estimates. Recently Issued Accounting Pronouncements In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income". The amendments in this update address certain stranded income tax effects in accumulated other comprehensive income ("AOCI") resulting from the Tax Cuts and Jobs Act (the "Tax Act"). Current guidance requires the effect of a change in tax laws or rates on deferred tax balances to be reported in income from continuing operations in the accounting period that includes the period of enactment, even if the related income tax effects were originally charged or credited directly to AOCI. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded effects resulting from the Tax Act. The amount of the reclassification would include the effect of the change in the U.S. federal corporate income tax rate on the gross deferred tax amounts and related valuation allowances, if any, at the date of the enactment of the Tax Act related to items in AOCI. The updated guidance is effective for reporting periods beginning after December 15, 2018 and is to be applied retrospectively to each period in which the effect of the Tax Act related to items remaining in AOCI are recognized or at the beginning of the period of adoption. The Company has evaluated the potential impact of adopting this guidance and determined it will not have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". The amendments in this update eliminate the requirement to perform Step 2 of the goodwill impairment test. Instead, an entity should perform a goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value up to the carrying amount of the goodwill. This ASU is effective for public companies in the fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. The impact of adopting this guidance could result in a change in the overall conclusion as to whether or not a reporting unit's goodwill is impaired and the amount of an impairment charge recognized in the event a reporting units' carrying value exceeds its fair value. All of the Company's reporting units had fair values that were greater than the carrying value as of the Company's last quantitative goodwill impairment test, which was performed as of October 1, 2018. The Company is currently evaluating the potential impact of adopting this guidance on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 814)" which requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases with terms longer than 12 months. For leases with terms less than 12 months, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right of use asset and lease liability. The guidance requires enhanced disclosures regarding the amount, timing, and uncertainty of cash flows arising from leases that will be effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. This guidance becomes effective for the Company on January 1, 2019. The Company plans to elect the practical expedient which does not require the capitalization of leases with terms of 12 months or less. And the Company does not plan to elect the practical expedient which allows hindsight to be used to determine the term of a lease. The Company has completed the accumulation of its lease portfolio into a lease management system and has validated the information for accuracy and completeness. The Company has implemented the system which will be used as the primary source for the Company’s lease information and related accounting. Management expects to record a right-of-use asset and lease liability on the Consolidated Balance Sheet for several types of operating leases, including land and buildings, plant equipment, and vehicles. The amount of the respective asset and liability is estimated to be within a range of $165 million to $185 million . The FASB recently proposed a transition alternative, which would allow for the application of the guidance at beginning of the period in which it is adopted, rather than requiring the adjustment of prior comparative periods. The Company has adopted this transition alternative on the January 1, 2019 adoption date. Recently Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” This ASU supersedes most of the previous revenue recognition requirements in U.S. GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which the Company expects to be entitled in exchange for transferring goods or services to a customer. The new standard also requires significantly expanded disclosures regarding the qualitative and quantitative information of an entity’s nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU became effective for public companies during interim and annual reporting periods beginning after December 15, 2017. The Company adopted this accounting standard update using the modified retrospective method. The impact of adopting the new standard was not material to the consolidated statement of income or the consolidated balance sheet. In March 2017, the FASB issued ASU No. 2017-07 "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost". The amendments in this update require the service cost component of net benefit costs to be reported in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit costs are required to be presented in the income statement separately from the service cost component and outside income from operations. This update also allows the service cost component to be eligible for capitalization when applicable. In accordance with this update, the Company began recognizing the interest expense component of net periodic benefit cost in interest expense in the income statement and the expected return on plan assets, net amortization/deferrals, and curtailments in other income (expense), net in the income statement. This update has been adopted by the Company and applied retrospectively for presentation of the service cost component and other components of net benefit costs in accordance with the ASU. The impact of adoption resulted in increases of $0.6 million , $9.2 million and $9.8 million to selling, general, and administrative expense, interest expense, net and other income, net, respectively, in the income statement for the year ended December 31, 2017. The impact of adoption resulted in increases of $1.8 million , $7.7 million and $9.5 million to selling, general, and administrative expense, interest expense, net and other income, net, respectively, in the income statement for the year ended December 31, 2016. Also, the capitalization of the service cost component of net benefit cost will be adopted prospectively in accordance with the ASU. In November 2016, the FASB issued ASU No. 2016-18 "Statement of Cash Flows (Topic 230): Restricted Cash". The amendments in this update require a statement of cash flows to explain the change during the period in total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The requirements of this update have been adopted by the Company and applied retrospectively. As a result, restricted cash related to the acquisition of Faiveley Transport is included in the change in cash for the years ended December 31, 2017 and 2016.

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Faiveley Transport On November 30, 2016, the Company acquired majority ownership of Faiveley Transport under the terms of a Share Purchase Agreement. Faiveley Transport is a leading global provider of value-added, integrated systems and services for the railway industry with annual sales of about $1.2 billion and more than 5,700 employees in 24 countries. Faiveley Transport supplies railway manufacturers, operators and maintenance providers with a range of value-added, technology-based systems and services in Energy & Comfort (air conditioning, power collectors and converters, and passenger information), Access & Mobility (passenger access systems and platform doors), and Brakes and Safety (braking systems and couplers). The transaction was structured as a step acquisition as follows: • On November 30, 2016, the Company acquired majority ownership of Faiveley Transport, after completing the purchase of the Faiveley family’s ownership interest under the terms of the Share Purchase Agreement, which directed the Company to pay €100 per share of Faiveley Transport, payable between 25% and 45% in cash at the election of those shareholders and the remainder payable in Wabtec stock. The Faiveley family’s ownership interest acquired by the Company represented approximately 51% of outstanding share capital and approximately 49% of the outstanding voting shares of Faiveley Transport. Upon completion of the share purchase under the Share Purchase Agreement, Wabtec commenced a tender offer for the remaining publicly traded Faiveley Transport shares. The public shareholders had the option to elect to receive €100 per share in cash or 1.1538 shares of Wabtec common stock per share of Faiveley Transport. The common stock portion of the consideration was subject to a cap on issuance of Wabtec common shares that was equivalent to the rates of cash and stock elected by the 51% owners. • On February 3, 2017, the initial cash tender offer was closed, which resulted in the Company acquiring approximately 27% of additional outstanding share capital and voting rights of Faiveley Transport for approximately $411.8 million in cash and $25.2 million in Wabtec stock. After the initial cash tender offer, the Company owned approximately 78% of outstanding share capital and 76% of voting rights. • On March 6, 2017, the final cash tender offer was closed, which resulted in the Company acquiring approximately 21% of additional outstanding share capital and 22% of additional outstanding voting rights of Faiveley Transport for approximately $303.2 million in cash and $0.3 million in Wabtec stock. After the final cash tender offer, the Company owned approximately 99% of the share capital and 98% of the voting rights of Faiveley Transport. • On March 21, 2017, a mandatory squeeze-out procedure was finalized, which resulted in the Company acquiring the Faiveley Transport shares not tendered in the offers for approximately $17.5 million in cash. This resulted in the Company owning 100% of the share capital and voting rights of Faiveley Transport. As of November 30, 2016, the date the Company acquired 51% of the share capital and 49% of the voting interest in Faiveley Transport, Faiveley Transport was consolidated under the variable interest entity model as the Company concluded that it was the primary beneficiary of Faiveley Transport as it then possessed the power to direct the activities of Faiveley Transport that most significantly impact its economic performance and it then possessed the obligation and right to absorb losses and benefits from Faiveley Transport. The purchase price paid for 100% ownership of Faiveley Transport was $1,507 million . The $744.7 million included as deposits in escrow on the consolidated balance sheet at December 31, 2016 was cash designated for use as consideration for the tender offers. The fair values of the assets acquired and liabilities assumed were determined using the income, cost and market approaches. The fair value measurements were primarily based on significant inputs that are not observable in the market and are considered Level 3. The December 31, 2016 consolidated balance sheet includes the assets and liabilities of Faiveley Transport, which have been measured at fair value. The fair value of the noncontrolling interest was determined using the market price of Faiveley Transport’s publicly traded common stock multiplied by the number of publicly traded common shares outstanding at the acquisition date and is considered Level 1. The acquisition of the noncontrolling interest during the three months ended March 31, 2017 resulted in a $8.9 million increase to additional paid-in capital on the consolidated balance sheet which represents the difference in consideration paid to acquire the noncontrolling interest and the carrying value of noncontrolling interest at acquisition. The following table summarizes the final fair values of the Faiveley Transport assets acquired and liabilities assumed. In thousands Assets acquired Cash and cash equivalents $ 178,318 Accounts receivable 439,631 Inventories 205,649 Other current assets 70,930 Property, plant, and equipment 148,746 Goodwill 1,262,350 Trade names 346,328 Customer Relationships 233,529 Patents 1,201 Other noncurrent assets 184,564 Total assets acquired 3,071,246 Liabilities assumed Current liabilities 819,493 Debt 409,899 Other noncurrent liabilities 335,039 Total liabilities assumed 1,564,431 Net assets acquired $ 1,506,815 Other Acquisitions The Company made the following acquisitions operating as a business unit or component of a business unit in the Freight Segment: • On December 4, 2017 , the Company acquired Melett Limited ("Melett"), a leader in the design, manufacture, and supply of high-quality turbochargers and replacement parts to the turbocharger aftermarket, for a purchase price of approximately $71.9 million , net of cash acquired, resulting in goodwill of $26.7 million , none of which will be deductible for tax purposes. • On April 5, 2017 , the Company acquired Thermal Transfer Corporation ("TTC"), a leading provider of heat transfer solutions for industrial applications, for a purchase price of approximately $32.5 million , net of cash acquired, resulting in goodwill of $14.1 million , all of which will be deductible for tax purposes. • On March 13, 2017 , the Company acquired Aero Transportation Products ("ATP"), a manufacturer of engineered covering systems for hopper freight cars, for a purchase price of approximately $65.3 million , net of cash acquired, resulting in goodwill of $29.0 million , all of which will be deductible for tax purposes. The following table summarizes the final fair values of the assets acquired and liabilities assumed at the date of the acquisitions. Melett TTC ATP December 4, 2017 April 5, 2017 March 13, 2017 In thousands Current assets, net of cash acquired $ 34,491 $ 3,744 $ 11,666 Property, plant & equipment 5,917 5,413 5,354 Goodwill 26,653 14,095 29,034 Other intangible assets 28,590 12,300 25,000 Total assets acquired 95,651 35,552 71,054 Total liabilities assumed (23,758 ) (3,041 ) (5,800 ) Net assets acquired $ 71,893 $ 32,511 $ 65,254 The Company made the following acquisitions operating as a business unit or component of a business unit in the Transit Segment: • On March 22, 2018 , the Company acquired Annax GmbH ("Annax"), a leading supplier of public address and passenger information systems for transit vehicles, for a purchase price of approximately $28.7 million , net of cash acquired, resulting in preliminary goodwill of $25.5 million , none of which will be deductible for tax purposes. • On October 2, 2017 , the Company acquired AM General Contractor ("AM General"), a manufacturer of safety systems, mainly for transit rail cars for a purchase price of approximately $10.4 million , net of cash acquired, resulting in goodwill of $6.1 million , none of which will be deductible for tax purposes. For the Annax acquisition, the following table summarizes the preliminary estimated fair value of the assets acquired and liabilities assumed at the date of acquisition. For the AM General acquisition, the following table summarizes the final fair value of the assets acquired and liabilities assumed at the date of the acquisition. Annax AM General March 22, 2018 October 2, 2017 In thousands Current assets, net of cash acquired $ 34,036 $ 6,805 Property, plant & equipment 674 4,140 Goodwill 25,471 6,114 Other intangible assets 12,828 19,427 Total assets acquired 73,009 36,486 Total liabilities assumed (44,345 ) (26,070 ) Net assets acquired $ 28,664 $ 10,416 The acquisitions listed above include escrow deposits of $24.4 million , which may be released to the Company for indemnity and other claims in accordance with the purchase and escrow agreements. The total goodwill and other intangible assets for acquisitions listed in the tables above was $199.5 million , of which $101.4 million and $98.1 million was related to goodwill and other intangible assets, respectively. Of the allocation of $98.1 million of acquired intangible assets, $22.3 million was assigned to trade names, and $70.2 million was assigned to customer relationships. The trade names are considered to have an indefinite useful life while the intellectual property and customer relationships’ useful life is 20 years. The Company also made smaller acquisitions not listed above which are individually and collectively immaterial. The following unaudited pro forma financial information presents income statement results as if the acquisitions listed above had occurred January 1, 2017: For the year ended In thousands 2018 2017 Net sales $ 4,376,972 $ 3,994,515 Gross profit 1,235,821 1,099,878 Net income attributable to Wabtec shareholders 292,207 273,301 Diluted earnings per share As Reported $ 3.05 $ 2.72 Pro forma $ 3.06 $ 2.84 The historical consolidated financial information of the Company and the acquisitions detailed above have been adjusted in the pro forma information to give effect to pro forma events that are (1) directly attributable to the transactions, (2) factually supportable and (3) expected to have a continuing impact on the combined results. Pro forma data may not be indicative of the results that would have been obtained had these acquisitions occurred at the beginning of the periods presented, nor is it intended to be a projection of future results. MERGER OF WABTEC WITH GE TRANSPORTATION Wabtec, General Electric Company ("GE"), Transportation System Holdings Inc. ("SpinCo"), which was a newly formed wholly owned subsidiary of GE, and Wabtec US Rail Holdings, Inc. ("Merger Sub"), which was a newly formed wholly owned subsidiary of the Company, entered into the Original Merger Agreement on May 20, 2018, and GE, SpinCo, Wabtec and Wabtec US Rail Holdings, Inc. ("Direct Sale Purchaser") entered into the Original Separation Agreement on May 20, 2018, which together provided for the combination of Wabtec and GE Transportation. The Original Merger Agreement and Original Separation Agreement were subsequently amended on January 25, 2019 and the merger was completed on February 25, 2019. In connection with the Direct Sale, certain assets of GE Transportation, including the equity interests of certain pre-Transaction subsidiaries of GE that compose part of GE Transportation, were sold to Direct Sale Purchaser for a cash payment of $2.875 billion , and Direct Sale Purchaser assumed certain liabilities of GE Transportation in connection with this purchase. Thereafter, GE transferred the SpinCo Business to SpinCo and its subsidiaries (to the extent not already held by SpinCo and its subsidiaries), and SpinCo issued to GE shares of SpinCo Class A preferred stock, SpinCo Class B preferred stock, SpinCo Class C preferred stock and additional shares of SpinCo common stock in the SpinCo Transfer. Following this issuance of additional SpinCo common stock to GE, and immediately prior to the Distribution, GE owned 8,700,000,000 shares of SpinCo common stock, 15,000 shares of SpinCo Class A preferred stock, 10,000 shares of SpinCo Class B preferred stock and one share of SpinCo Class C preferred stock, which constituted all of the outstanding stock of SpinCo. Following the Direct Sale, GE distributed the Distribution Shares of SpinCo in a spin-off transaction. Immediately after the Distribution, Merger Sub merged with and into SpinCo, whereby the separate corporate existence of Merger Sub ceased and SpinCo continued as the surviving company and a wholly owned subsidiary of Wabtec (except with respect to shares of SpinCo Class A preferred stock held by GE). In the Merger, subject to adjustment in accordance with the Merger Agreement, each share of SpinCo common stock converted into the right to receive a number of shares of Wabtec common stock based on the common stock exchange ratio set forth in the Merger Agreement and the share of SpinCo Class C preferred stock was converted into the right to receive (a) 10,000 shares of Wabtec convertible preferred stock and (b) a number of shares of Wabtec common stock equal to 9.9% of the fully-diluted pro forma Wabtec shares. Immediately prior to the Merger, Wabtec paid $10.0 million in cash to GE in exchange for all of the shares of SpinCo Class B preferred stock. Upon consummation of the Merger and calculated based on Wabtec’s outstanding common stock on a fully-diluted, as-converted and as-exercised basis, as of December 31, 2018, approximately 49.2% of the outstanding shares of Wabtec common stock would be held collectively by GE and Spin-Off record date holders of GE common stock (with 9.9% to be held by GE directly in shares of Wabtec common stock and 15% underlying the shares of Wabtec convertible preferred stock to be held by GE) and approximately 50.8% of the outstanding shares of Wabtec common stock would be held by pre-Merger Wabtec stockholders. Following the effective time of the Merger, GE will also own 15,000 shares of SpinCo Class A preferred stock, and Wabtec will hold 10,000 shares of SpinCo Class B preferred stock. The shares of Wabtec common stock and Wabtec convertible preferred stock held by GE will be subject to GE’s obligations under the Shareholders Agreement, including, among other things, and in each case subject to certain exceptions, (i) restrictions on the ability to sell, transfer or otherwise divest such shares for a period of 30 days and (ii) an obligation to sell, transfer or otherwise divest (A) by no later than 120 days following the closing date of the Merger, GE’s (and its affiliates’) ownership of Wabtec common stock and/or Wabtec convertible preferred stock so that GE (together with its affiliates) beneficially owns not less than 14.9% and not more than 19.9% of the number of shares of Wabtec common stock that were outstanding immediately after the closing of the Merger, (B) by no later than one year following the closing date of the Merger, GE’s (and its affiliates’) ownership of Wabtec common stock and/or Wabtec convertible preferred stock so that GE (together with its affiliates) beneficially owns not more than 18.5% of the number of shares of Wabtec common stock that were outstanding immediately after the closing of the Merger, in each case of clauses (A) and (B) treating the Wabtec convertible preferred stock as the Wabtec common stock into which it is convertible both for purposes of determining the number of shares of Wabtec common stock owned and for purposes of determining the number of shares of Wabtec common stock outstanding and (C) by no later than the third anniversary of the closing date of the Merger, all of the subject shares that GE (together with its affiliates) beneficially owns, and (iii) an obligation to vote all of such shares of Wabtec common stock in the proportion required under the Shareholders Agreement. The estimated total value of the consideration to be paid by Wabtec in the Transactions was subject to the market price of shares of Wabtec common stock at the date of closing. Using Wabtec’s closing stock price on the NYSE as of February 22, 2019, the total value of the consideration for the Transactions was approximately $10.2 billion , including the Direct Sale Purchase Price, contingent consideration, assumed debt and net of cash acquired. On September 14, 2018, Wabtec completed a public offering and sale of (i) $500 million aggregate principal amount of floating rate senior notes, (ii) $750 million aggregate principal amount of 2024 Senior Notes and (iii) $1.25 billion aggregate principal amount of 2028 Senior Notes. The Company used the net proceeds from the offering and sale of these notes combined with the proceeds from a $400 million delayed draw term loan that was entered into on June 8, 2018 to finance the Direct Sale. Wabtec used a portion of the proceeds from the September 14, 2018 notes to pay debt associated with its revolving credit facility. The remaining proceeds are classified as Restricted Cash on the consolidated balance sheet, as the Company used these cash amounts to finance the Direct Sale. Refer to Footnote 10 for further information regarding debt. After the Merger, SpinCo, which is Wabtec’s wholly owned subsidiary (except with respect to shares of SpinCo Class A preferred stock held by GE), holds the SpinCo Business and Direct Sale Purchaser, which also is Wabtec’s wholly owned subsidiary, holds the assets purchased and the liabilities assumed in connection with the Direct Sale. Together, SpinCo and Direct Sale Purchaser own and operate the post-Transaction GE Transportation. All shares of the Company’s common stock, including those issued in the Merger, are listed on the NYSE under the Company’s current trading symbol “WAB.” On the date of the Distribution, GE or its subsidiaries and SpinCo or the SpinCo Transferred Subsidiaries entered into additional agreements relating to, among other things, intellectual property, employee matters, tax matters, research and development and transition services.

MERGER OF WABTEC WITH GE TRANSP

MERGER OF WABTEC WITH GE TRANSPORTATION	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
MERGER OF WABTEC WITH GE TRANSPORTATION	ACQUISITIONS Faiveley Transport On November 30, 2016, the Company acquired majority ownership of Faiveley Transport under the terms of a Share Purchase Agreement. Faiveley Transport is a leading global provider of value-added, integrated systems and services for the railway industry with annual sales of about $1.2 billion and more than 5,700 employees in 24 countries. Faiveley Transport supplies railway manufacturers, operators and maintenance providers with a range of value-added, technology-based systems and services in Energy & Comfort (air conditioning, power collectors and converters, and passenger information), Access & Mobility (passenger access systems and platform doors), and Brakes and Safety (braking systems and couplers). The transaction was structured as a step acquisition as follows: • On November 30, 2016, the Company acquired majority ownership of Faiveley Transport, after completing the purchase of the Faiveley family’s ownership interest under the terms of the Share Purchase Agreement, which directed the Company to pay €100 per share of Faiveley Transport, payable between 25% and 45% in cash at the election of those shareholders and the remainder payable in Wabtec stock. The Faiveley family’s ownership interest acquired by the Company represented approximately 51% of outstanding share capital and approximately 49% of the outstanding voting shares of Faiveley Transport. Upon completion of the share purchase under the Share Purchase Agreement, Wabtec commenced a tender offer for the remaining publicly traded Faiveley Transport shares. The public shareholders had the option to elect to receive €100 per share in cash or 1.1538 shares of Wabtec common stock per share of Faiveley Transport. The common stock portion of the consideration was subject to a cap on issuance of Wabtec common shares that was equivalent to the rates of cash and stock elected by the 51% owners. • On February 3, 2017, the initial cash tender offer was closed, which resulted in the Company acquiring approximately 27% of additional outstanding share capital and voting rights of Faiveley Transport for approximately $411.8 million in cash and $25.2 million in Wabtec stock. After the initial cash tender offer, the Company owned approximately 78% of outstanding share capital and 76% of voting rights. • On March 6, 2017, the final cash tender offer was closed, which resulted in the Company acquiring approximately 21% of additional outstanding share capital and 22% of additional outstanding voting rights of Faiveley Transport for approximately $303.2 million in cash and $0.3 million in Wabtec stock. After the final cash tender offer, the Company owned approximately 99% of the share capital and 98% of the voting rights of Faiveley Transport. • On March 21, 2017, a mandatory squeeze-out procedure was finalized, which resulted in the Company acquiring the Faiveley Transport shares not tendered in the offers for approximately $17.5 million in cash. This resulted in the Company owning 100% of the share capital and voting rights of Faiveley Transport. As of November 30, 2016, the date the Company acquired 51% of the share capital and 49% of the voting interest in Faiveley Transport, Faiveley Transport was consolidated under the variable interest entity model as the Company concluded that it was the primary beneficiary of Faiveley Transport as it then possessed the power to direct the activities of Faiveley Transport that most significantly impact its economic performance and it then possessed the obligation and right to absorb losses and benefits from Faiveley Transport. The purchase price paid for 100% ownership of Faiveley Transport was $1,507 million . The $744.7 million included as deposits in escrow on the consolidated balance sheet at December 31, 2016 was cash designated for use as consideration for the tender offers. The fair values of the assets acquired and liabilities assumed were determined using the income, cost and market approaches. The fair value measurements were primarily based on significant inputs that are not observable in the market and are considered Level 3. The December 31, 2016 consolidated balance sheet includes the assets and liabilities of Faiveley Transport, which have been measured at fair value. The fair value of the noncontrolling interest was determined using the market price of Faiveley Transport’s publicly traded common stock multiplied by the number of publicly traded common shares outstanding at the acquisition date and is considered Level 1. The acquisition of the noncontrolling interest during the three months ended March 31, 2017 resulted in a $8.9 million increase to additional paid-in capital on the consolidated balance sheet which represents the difference in consideration paid to acquire the noncontrolling interest and the carrying value of noncontrolling interest at acquisition. The following table summarizes the final fair values of the Faiveley Transport assets acquired and liabilities assumed. In thousands Assets acquired Cash and cash equivalents $ 178,318 Accounts receivable 439,631 Inventories 205,649 Other current assets 70,930 Property, plant, and equipment 148,746 Goodwill 1,262,350 Trade names 346,328 Customer Relationships 233,529 Patents 1,201 Other noncurrent assets 184,564 Total assets acquired 3,071,246 Liabilities assumed Current liabilities 819,493 Debt 409,899 Other noncurrent liabilities 335,039 Total liabilities assumed 1,564,431 Net assets acquired $ 1,506,815 Other Acquisitions The Company made the following acquisitions operating as a business unit or component of a business unit in the Freight Segment: • On December 4, 2017 , the Company acquired Melett Limited ("Melett"), a leader in the design, manufacture, and supply of high-quality turbochargers and replacement parts to the turbocharger aftermarket, for a purchase price of approximately $71.9 million , net of cash acquired, resulting in goodwill of $26.7 million , none of which will be deductible for tax purposes. • On April 5, 2017 , the Company acquired Thermal Transfer Corporation ("TTC"), a leading provider of heat transfer solutions for industrial applications, for a purchase price of approximately $32.5 million , net of cash acquired, resulting in goodwill of $14.1 million , all of which will be deductible for tax purposes. • On March 13, 2017 , the Company acquired Aero Transportation Products ("ATP"), a manufacturer of engineered covering systems for hopper freight cars, for a purchase price of approximately $65.3 million , net of cash acquired, resulting in goodwill of $29.0 million , all of which will be deductible for tax purposes. The following table summarizes the final fair values of the assets acquired and liabilities assumed at the date of the acquisitions. Melett TTC ATP December 4, 2017 April 5, 2017 March 13, 2017 In thousands Current assets, net of cash acquired $ 34,491 $ 3,744 $ 11,666 Property, plant & equipment 5,917 5,413 5,354 Goodwill 26,653 14,095 29,034 Other intangible assets 28,590 12,300 25,000 Total assets acquired 95,651 35,552 71,054 Total liabilities assumed (23,758 ) (3,041 ) (5,800 ) Net assets acquired $ 71,893 $ 32,511 $ 65,254 The Company made the following acquisitions operating as a business unit or component of a business unit in the Transit Segment: • On March 22, 2018 , the Company acquired Annax GmbH ("Annax"), a leading supplier of public address and passenger information systems for transit vehicles, for a purchase price of approximately $28.7 million , net of cash acquired, resulting in preliminary goodwill of $25.5 million , none of which will be deductible for tax purposes. • On October 2, 2017 , the Company acquired AM General Contractor ("AM General"), a manufacturer of safety systems, mainly for transit rail cars for a purchase price of approximately $10.4 million , net of cash acquired, resulting in goodwill of $6.1 million , none of which will be deductible for tax purposes. For the Annax acquisition, the following table summarizes the preliminary estimated fair value of the assets acquired and liabilities assumed at the date of acquisition. For the AM General acquisition, the following table summarizes the final fair value of the assets acquired and liabilities assumed at the date of the acquisition. Annax AM General March 22, 2018 October 2, 2017 In thousands Current assets, net of cash acquired $ 34,036 $ 6,805 Property, plant & equipment 674 4,140 Goodwill 25,471 6,114 Other intangible assets 12,828 19,427 Total assets acquired 73,009 36,486 Total liabilities assumed (44,345 ) (26,070 ) Net assets acquired $ 28,664 $ 10,416 The acquisitions listed above include escrow deposits of $24.4 million , which may be released to the Company for indemnity and other claims in accordance with the purchase and escrow agreements. The total goodwill and other intangible assets for acquisitions listed in the tables above was $199.5 million , of which $101.4 million and $98.1 million was related to goodwill and other intangible assets, respectively. Of the allocation of $98.1 million of acquired intangible assets, $22.3 million was assigned to trade names, and $70.2 million was assigned to customer relationships. The trade names are considered to have an indefinite useful life while the intellectual property and customer relationships’ useful life is 20 years. The Company also made smaller acquisitions not listed above which are individually and collectively immaterial. The following unaudited pro forma financial information presents income statement results as if the acquisitions listed above had occurred January 1, 2017: For the year ended In thousands 2018 2017 Net sales $ 4,376,972 $ 3,994,515 Gross profit 1,235,821 1,099,878 Net income attributable to Wabtec shareholders 292,207 273,301 Diluted earnings per share As Reported $ 3.05 $ 2.72 Pro forma $ 3.06 $ 2.84 The historical consolidated financial information of the Company and the acquisitions detailed above have been adjusted in the pro forma information to give effect to pro forma events that are (1) directly attributable to the transactions, (2) factually supportable and (3) expected to have a continuing impact on the combined results. Pro forma data may not be indicative of the results that would have been obtained had these acquisitions occurred at the beginning of the periods presented, nor is it intended to be a projection of future results. MERGER OF WABTEC WITH GE TRANSPORTATION Wabtec, General Electric Company ("GE"), Transportation System Holdings Inc. ("SpinCo"), which was a newly formed wholly owned subsidiary of GE, and Wabtec US Rail Holdings, Inc. ("Merger Sub"), which was a newly formed wholly owned subsidiary of the Company, entered into the Original Merger Agreement on May 20, 2018, and GE, SpinCo, Wabtec and Wabtec US Rail Holdings, Inc. ("Direct Sale Purchaser") entered into the Original Separation Agreement on May 20, 2018, which together provided for the combination of Wabtec and GE Transportation. The Original Merger Agreement and Original Separation Agreement were subsequently amended on January 25, 2019 and the merger was completed on February 25, 2019. In connection with the Direct Sale, certain assets of GE Transportation, including the equity interests of certain pre-Transaction subsidiaries of GE that compose part of GE Transportation, were sold to Direct Sale Purchaser for a cash payment of $2.875 billion , and Direct Sale Purchaser assumed certain liabilities of GE Transportation in connection with this purchase. Thereafter, GE transferred the SpinCo Business to SpinCo and its subsidiaries (to the extent not already held by SpinCo and its subsidiaries), and SpinCo issued to GE shares of SpinCo Class A preferred stock, SpinCo Class B preferred stock, SpinCo Class C preferred stock and additional shares of SpinCo common stock in the SpinCo Transfer. Following this issuance of additional SpinCo common stock to GE, and immediately prior to the Distribution, GE owned 8,700,000,000 shares of SpinCo common stock, 15,000 shares of SpinCo Class A preferred stock, 10,000 shares of SpinCo Class B preferred stock and one share of SpinCo Class C preferred stock, which constituted all of the outstanding stock of SpinCo. Following the Direct Sale, GE distributed the Distribution Shares of SpinCo in a spin-off transaction. Immediately after the Distribution, Merger Sub merged with and into SpinCo, whereby the separate corporate existence of Merger Sub ceased and SpinCo continued as the surviving company and a wholly owned subsidiary of Wabtec (except with respect to shares of SpinCo Class A preferred stock held by GE). In the Merger, subject to adjustment in accordance with the Merger Agreement, each share of SpinCo common stock converted into the right to receive a number of shares of Wabtec common stock based on the common stock exchange ratio set forth in the Merger Agreement and the share of SpinCo Class C preferred stock was converted into the right to receive (a) 10,000 shares of Wabtec convertible preferred stock and (b) a number of shares of Wabtec common stock equal to 9.9% of the fully-diluted pro forma Wabtec shares. Immediately prior to the Merger, Wabtec paid $10.0 million in cash to GE in exchange for all of the shares of SpinCo Class B preferred stock. Upon consummation of the Merger and calculated based on Wabtec’s outstanding common stock on a fully-diluted, as-converted and as-exercised basis, as of December 31, 2018, approximately 49.2% of the outstanding shares of Wabtec common stock would be held collectively by GE and Spin-Off record date holders of GE common stock (with 9.9% to be held by GE directly in shares of Wabtec common stock and 15% underlying the shares of Wabtec convertible preferred stock to be held by GE) and approximately 50.8% of the outstanding shares of Wabtec common stock would be held by pre-Merger Wabtec stockholders. Following the effective time of the Merger, GE will also own 15,000 shares of SpinCo Class A preferred stock, and Wabtec will hold 10,000 shares of SpinCo Class B preferred stock. The shares of Wabtec common stock and Wabtec convertible preferred stock held by GE will be subject to GE’s obligations under the Shareholders Agreement, including, among other things, and in each case subject to certain exceptions, (i) restrictions on the ability to sell, transfer or otherwise divest such shares for a period of 30 days and (ii) an obligation to sell, transfer or otherwise divest (A) by no later than 120 days following the closing date of the Merger, GE’s (and its affiliates’) ownership of Wabtec common stock and/or Wabtec convertible preferred stock so that GE (together with its affiliates) beneficially owns not less than 14.9% and not more than 19.9% of the number of shares of Wabtec common stock that were outstanding immediately after the closing of the Merger, (B) by no later than one year following the closing date of the Merger, GE’s (and its affiliates’) ownership of Wabtec common stock and/or Wabtec convertible preferred stock so that GE (together with its affiliates) beneficially owns not more than 18.5% of the number of shares of Wabtec common stock that were outstanding immediately after the closing of the Merger, in each case of clauses (A) and (B) treating the Wabtec convertible preferred stock as the Wabtec common stock into which it is convertible both for purposes of determining the number of shares of Wabtec common stock owned and for purposes of determining the number of shares of Wabtec common stock outstanding and (C) by no later than the third anniversary of the closing date of the Merger, all of the subject shares that GE (together with its affiliates) beneficially owns, and (iii) an obligation to vote all of such shares of Wabtec common stock in the proportion required under the Shareholders Agreement. The estimated total value of the consideration to be paid by Wabtec in the Transactions was subject to the market price of shares of Wabtec common stock at the date of closing. Using Wabtec’s closing stock price on the NYSE as of February 22, 2019, the total value of the consideration for the Transactions was approximately $10.2 billion , including the Direct Sale Purchase Price, contingent consideration, assumed debt and net of cash acquired. On September 14, 2018, Wabtec completed a public offering and sale of (i) $500 million aggregate principal amount of floating rate senior notes, (ii) $750 million aggregate principal amount of 2024 Senior Notes and (iii) $1.25 billion aggregate principal amount of 2028 Senior Notes. The Company used the net proceeds from the offering and sale of these notes combined with the proceeds from a $400 million delayed draw term loan that was entered into on June 8, 2018 to finance the Direct Sale. Wabtec used a portion of the proceeds from the September 14, 2018 notes to pay debt associated with its revolving credit facility. The remaining proceeds are classified as Restricted Cash on the consolidated balance sheet, as the Company used these cash amounts to finance the Direct Sale. Refer to Footnote 10 for further information regarding debt. After the Merger, SpinCo, which is Wabtec’s wholly owned subsidiary (except with respect to shares of SpinCo Class A preferred stock held by GE), holds the SpinCo Business and Direct Sale Purchaser, which also is Wabtec’s wholly owned subsidiary, holds the assets purchased and the liabilities assumed in connection with the Direct Sale. Together, SpinCo and Direct Sale Purchaser own and operate the post-Transaction GE Transportation. All shares of the Company’s common stock, including those issued in the Merger, are listed on the NYSE under the Company’s current trading symbol “WAB.” On the date of the Distribution, GE or its subsidiaries and SpinCo or the SpinCo Transferred Subsidiaries entered into additional agreements relating to, among other things, intellectual property, employee matters, tax matters, research and development and transition services.

SUPPLEMENTAL CASH FLOW DISCLOSU

SUPPLEMENTAL CASH FLOW DISCLOSURES	12 Months Ended
	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
SUPPLEMENTAL CASH FLOW DISCLOSURES	SUPPLEMENTAL CASH FLOW DISCLOSURES Year Ended December 31, 2018 2017 2016 In thousands Interest paid during the year $ 81,756 $ 75,317 $ 30,211 Income taxes paid during the year, net of amount refunded $ 83,949 $ 89,379 $ 121,563 Business acquisitions: Fair value of assets acquired 91,758 452,209 3,118,420 Liabilities assumed 32,908 207,788 1,453,382 Non-controlling interest (acquired) assumed — (761,786 ) 760,343 Stock and cash paid 58,850 1,006,207 904,695 Less: Cash acquired 7,697 35,408 186,903 Stock used for acquisition — 25,500 534,679 Net cash paid $ 51,153 $ 945,299 $ 183,113

INVENTORIES

INVENTORIES	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES The components of inventory, net of reserves, were: December 31, In thousands 2018 2017 Raw materials $ 465,873 $ 378,481 Work-in-progress 154,485 167,390 Finished goods 224,528 196,763 Total inventories $ 844,886 $ 742,634

PROPERTY, PLANT & EQUIPMENT

PROPERTY, PLANT & EQUIPMENT	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT & EQUIPMENT	PROPERTY, PLANT & EQUIPMENT The major classes of depreciable assets are as follows: December 31, In thousands 2018 2017 Machinery and equipment $ 749,782 $ 728,257 Buildings and improvements 248,111 259,561 Land and improvements 38,657 38,228 Property, plant and equipment 1,036,550 1,026,046 Less: accumulated depreciation (472,813 ) (452,074 ) Total $ 563,737 $ 573,972 The estimated useful lives of property, plant and equipment are as follows: Years Land improvements 10 to 20 Building and improvements 20 to 40 Machinery and equipment 3 to 15 Depreciation expense was $66.4 million , $66.7 million , and $47.1 million for 2018 , 2017 and 2016 , respectively.

INTANGIBLES

INTANGIBLES	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLES	INTANGIBLES Goodwill and other intangible assets with indefinite lives are not amortized. Other intangibles with definite lives are amortized on a straight-line basis over their estimated economic lives. Goodwill and indefinite lived intangible assets are reviewed annually during the fourth quarter for impairment (See Note 2 “Summary of Significant Accounting Policies” included herein). Goodwill and indefinite live intangible assets were not impaired at December 31, 2018 and 2017 . The change in the carrying amount of goodwill by segment for the year ended December 31, 2018 is as follows: Freight Transit In thousands Segment Segment Total Balance at December 31, 2017 $ 718,958 $ 1,741,145 $ 2,460,103 Additions 6,478 16,790 23,268 Foreign currency impact (12,045 ) (74,782 ) (86,827 ) Balance at December 31, 2018 $ 713,391 $ 1,683,153 $ 2,396,544 As of December 31, 2018 and 2017 , the Company’s trade names had a net carrying amount of $582.8 million and $603.4 million , respectively, and the Company believes these intangibles have indefinite lives. Intangible assets of the Company, other than goodwill and trade names, consist of the following: December 31, In thousands 2018 2017 Patents, non-compete and other intangibles, net of accumulated amortization of $42,446 and $43,021 $ 15,328 $ 17,554 Customer relationships, net of accumulated amortization of $158,533 and $126,824 531,761 583,459 Total $ 547,089 $ 601,013 The remaining weighted average useful lives of patents, customer relationships and intellectual property were 10 years , 16 years and 13 years respectively. Amortization expense for intangible assets was $39.8 million , $36.5 million , and $22.7 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. Estimated amortization expense for the five succeeding years is as follows (in thousands): 2019 $ 38,289 2020 36,552 2021 35,595 2022 35,283 2023 34,945

CONTRACT ASSETS AND CONTRACT LI

CONTRACT ASSETS AND CONTRACT LIABILITIES	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
CONTRACT ASSETS AND CONTRACT LIABILITIES	CONTRACT ASSETS AND CONTRACT LIABILITIES Contract assets include unbilled amounts resulting from sales under long-term contracts where revenue is recognized over time and revenue exceeds the amount that can be billed to the customer based on the terms of the contract. Contract liabilities include customer deposits that are made prior to the incurrence of costs related to a newly agreed upon contract, advanced customer payments that are in excess of revenue recognized, and provisions for estimated losses from uncompleted contracts. The change in the carrying amount of contract assets and contract liabilities for the twelve months ended December 31, 2018 is as follows: In thousands Contract Assets Balance at beginning of year $ 366,168 Recognized in current year 426,829 Reclassified to accounts receivable (432,307 ) Foreign currency impact (15,105 ) Balance at December 31, 2018 $ 345,585 In thousands Contract Liabilities Balance at beginning of year $ 463,704 Recognized in current year 230,159 Amounts in beginning balance reclassified to revenue (199,735 ) Current year amounts reclassified to revenue (30,914 ) Foreign currency impact (18,409 ) Balance at December 31, 2018 $ 444,805

LONG-TERM DEBT

LONG-TERM DEBT	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Long-term debt consisted of the following: December 31, In thousands 2018 2017 Floating Senior Notes, due 2021, net of unamortized debt $ 496,796 $ — 4.150% Senior Notes, due 2024, net of unamortized debt 742,957 — 4.70% Senior Notes, due 2028, net of unamortized debt 1,239,657 — 3.45% Senior Notes, due 2026, net of unamortized debt 748,282 747,655 4.375% Senior Notes, due 2023, net of unamortized 248,823 248,567 Revolving Credit Facility, net of unamortized 338,112 853,124 Other Borrowings 42,246 21,182 Total 3,856,873 1,870,528 Less - current portion 64,099 47,225 Long-term portion $ 3,792,774 $ 1,823,303 On September 14, 2018 the Company issued $2.5 billion of senior notes with three different maturities. • Floating Rate Senior Notes due 2021 - The Company issued $500.0 million of Floating Rate Senior Notes due 2021 (the "Floating Rate Notes"). The Floating Rate Notes, which are non-callable for one year , were issued at 100% of face value. Interest on the Floating Rate Notes accrues at a floating rate per annum equal to three-month Libor plus 105 basis points. The interest rate for the Floating Rate Notes for the initial interest period was the three-month Libor plus 105 basis points determined on September 12, 2018 and is payable quarterly on December 15, March 15, June 15, and September 15 of each year. The Company incurred $3.5 million of deferred financing costs related to the issuance of the Floating Rate Notes. • 4.150% Senior Notes due 2024 - The Company issued $750.0 million of 4.150% Senior Notes due 2024 (the "2024 Notes"). The 2024 Notes were issued at 99.805% of face value. Interest on the 2024 Notes accrues at a rate of 4.150% per annum and is payable semi-annually on March 15 and September 15 of each year. The Company incurred $7.4 million of deferred financing costs related to the issuance of the 2024 Notes. • 4.70% Senior Notes Due 2028 - The Company issued $1,250.0 million of 4.70% Senior Notes due 2028 (the "2028 Notes" and together with the Floating Rate Notes and 2024 Notes, the "Senior Notes"). The 2028 Notes were issued at 99.889% of face value. Interest on the 2028 Notes accrues at a rate of 4.700% per annum and is payable semi-annually on March 15 and September 15 of each year. The Company incurred $10.6 million of deferred financing costs related to the issuance of the 2028 Notes. The net proceeds from the issuance and sale of the Senior Notes was used to finance the cash portion of the GE Transportation acquisition. The principal balances are due in full at maturity. The Senior Notes are senior unsecured obligations of the Company and rank pari passu with all existing and future senior debt and senior to all existing and future subordinated indebtedness of the Company. The indenture under which the Senior Notes were issued contains covenants and restrictions which limit among other things, the following: the incurrence of indebtedness, payment of dividends and certain distributions, sales of assets, change in control, mergers and consolidations and the incurrence of liens. On February 12, 2019, the rating assigned by Moody's was decreased to Ba1. Accordingly, pursuant to the respective terms of the Senior Notes issued on September 14, 2018, the interest rate shall be increased by 0.25% . The interest rate increase shall take effect from the next interest period following February 12, 2019. The Company is in compliance with the restrictions and covenants in the indenture under which the Senior Notes were issued and expects that these restrictions and covenants will not be any type of limiting factor in executing our operating activities. 3.45% Senior Notes Due November 2026 In October 2016 , the Company issued $750.0 million of Senior Notes due in 2026 (the “2016 Notes”). The 2016 Notes were issued at 99.965% of face value. Interest on the 2016 Notes accrues at a rate of 3.45% per annum and is payable semi-annually on May 15 and November 15 of each year. The proceeds were used to finance the cash portion of the Faiveley Transport acquisition, refinance Faiveley Transport’s indebtedness, and for general corporate purposes. The principal balance is due in full at maturity. The Company incurred $2.7 million of deferred financing costs related to the issuance of the 2016 Notes. The 2016 Notes are senior unsecured obligations of the Company and rank pari passu with all existing and future senior debt and senior to all existing and future subordinated indebtedness of the Company. The indenture under which the 2016 Notes were issued contains covenants and restrictions which limit among other things, the following: the incurrence of indebtedness, payment of dividends and certain distributions, sale of assets, change in control, mergers and consolidations and the incurrence of liens. The Company is in compliance with the restrictions and covenants in the indenture under which the 2016 Notes were issued and expects that these restrictions and covenants will not be any type of limiting factor in executing our operating activities. 4.375% Senior Notes Due August 2023 In August 2013, the Company issued $250.0 million of Senior Notes due in 2023 (the “2013 Notes”). The 2013 Notes were issued at 99.879% of face value. Interest on the 2013 Notes accrues at a rate of 4.375% per annum and is payable semi-annually on February 15 and August 15 of each year. The proceeds were used to repay debt outstanding under the Company’s existing credit agreement, and for general corporate purposes. The principal balance is due in full at maturity. The Company incurred $2.6 million of deferred financing costs related to the issuance of the 2013 Notes. The 2013 Notes are senior unsecured obligations of the Company and rank pari passu with all existing and future senior debt and senior to all existing and future subordinated indebtedness of the Company. The indenture under which the 2013 Notes were issued contains covenants and restrictions which limit among other things, the following: the incurrence of indebtedness, payment of dividends and certain distributions, sale of assets, change in control, mergers and consolidations and the incurrence of liens. The Company is in compliance with the restrictions and covenants in the indenture under which the 2013 Notes were issued and expects that these restrictions and covenants will not be any type of limiting factor in executing our operating activities. 2018 Refinancing Credit Agreement On June 8, 2018, the Company entered into a credit agreement (the “2018 Refinancing Credit Agreement”), which replaced the Company’s then-existing “2016 Refinancing Credit Agreement.” As part of the 2018 Refinancing Credit Agreement, the Company entered into (i) a $1.2 billion revolving credit facility (the “Revolving Credit Facility”), which replaced the Company’s revolving credit facility under the 2016 Refinancing Credit Agreement, and includes a letter of credit sub-facility of up to $450.0 million and a swing line sub-facility of $75.0 million , (ii) a $350.0 million term loan (the “Refinancing Term Loan”), which refinanced the term loan under the 2016 Refinancing Credit Agreement, and (iii) a new $400.0 million delayed draw term loan (the “Delayed Draw Term Loan”). The 2018 Refinancing Credit Agreement also provided for a bridge loan facility (the “Bridge Loan Facility”) in an amount not to exceed $2.5 billion , such facility to become effective at the Company’s request. Commitments in respect of the Bridge Loan Facility were terminated upon the issuance and sale of the Senior Notes on September 14, 2018. In addition, the 2018 Refinancing Credit Agreement contains an uncommitted accordion feature allowing the Company to request, in an aggregate amount not to exceed $600.0 million , increases to the borrowing commitments under the Revolving Credit Facility or a new incremental term loan commitment. At December 31, 2018, the Company had available bank borrowing capacity, net of $29.2 million of letters of credit, of approximately $1,170.8 million subject to certain financial covenant restrictions. The Revolving Credit Facility matures on June 8, 2023 and is unsecured. The Refinancing Term Loan matures on June 8, 2021 and is unsecured. The Delayed Draw Term Loan matures on the third anniversary of the date on which it is borrowed and is unsecured. The applicable interest rate for borrowings under the 2018 Refinancing Credit Agreement includes interest rate spreads based on the lower of the pricing corresponding to (i) the Company’s ratio of total debt (less unrestricted cash up to $300.0 million ) to EBITDA (“Leverage Ratio”) or (ii) the Company’s public rating, in each case that range between 1.000% and 1.875% for LIBOR/CDOR-based borrowings and 0.0% and 0.875% for Alternate Base Rate based borrowings. The obligations of the Company under the 2018 Refinancing Credit Agreement have been guaranteed by certain of the Company’s subsidiaries. The 2018 Refinancing Credit Agreement contains customary representations and warranties by the Company and its subsidiaries, including customary use of materiality, material adverse effect, and knowledge qualifiers. The Company and its subsidiaries are also subject to (i) customary affirmative covenants that impose certain reporting obligations on the Company and its subsidiaries and (ii) customary negative covenants, including limitations on: indebtedness; liens; restricted payments; fundamental changes; business activities; transactions with affiliates; restrictive agreements; changes in fiscal year; and use of proceeds. In addition, the Company is required to maintain (i) an Interest Coverage ratio at least 3.00 to 1.00 over each period of four consecutive fiscal quarters ending on the last day of a fiscal quarter and (ii) a Leverage Ratio, calculated as of the last day of a fiscal quarter for a period of four consecutive fiscal quarters, of 3.25 to 1.00 or less; provided that, in the event the Company completes the Direct Sale and the Merger or any other material acquisition in which the cash consideration paid exceeds $500.0 million , the maximum Leverage Ratio permitted will be 3.75 to 1.00 at the end of the fiscal quarter in which such acquisition is consummated and each of the three fiscal quarters immediately following such fiscal quarter and 3.50 to 1.00 at the end of each of the fourth and fifth full fiscal quarters after the consummation of such acquisition. The Company is in compliance with the restrictions and covenants of the 2018 Refinancing Credit Agreement and does not expect that these measurements will limit the Company in executing its operating activities. At December 31, 2018, the weighted average interest rate on the Company’s variable rate debt was 3.68% . On June 5, 2014, the Company entered into a forward starting interest rate swap agreement with a notional value of $150.0 million . The effective date of the interest rate swap agreement was November 7, 2016, and the termination date was December 19, 2018. 2016 Refinancing Credit Agreement On June 22, 2016 , the Company amended its existing revolving credit facility with a consortium of commercial banks. This “2016 Refinancing Credit Agreement” provided the Company with a $1.2 billion , 5 year revolving credit facility and a $400.0 million delayed draw term loan (the “Term Loan”). The Company incurred approximately $3.3 million of deferred financing cost related to the 2016 Refinancing Credit Agreement. The 2016 Refinancing Credit Agreement borrowings bore variable interest rates indexed as described below. Under the 2016 Refinancing Credit Agreement, the Company could elect a Base Rate of interest for U.S. Dollar denominated loans or, for certain currencies, an interest rate based on the London Interbank Offered Rate (“LIBOR”) of interest, or other rates appropriate for such currencies (in any case, “the Alternate Rate”). The Base Rate adjusted on a daily basis and was the greater of the Federal Funds Effective Rate plus 0.50% per annum, the PNC, N.A. prime rate or the Daily LIBOR Rate plus 100 basis points, plus a margin that ranged from 0 to 75 basis points. The Alternate Rate was based on the quoted rates specific to the applicable currency, plus a margin that ranged from 75 to 175 basis points. Both the Base Rate and Alternate Rate margins were dependent on the Company’s consolidated total indebtedness to EBITDA ratios. The initial Base Rate margin was 0 basis points and the Alternate Rate margin is 175 basis points . Debt and Capital Leases Scheduled principal repayments of debt and capital lease balances as of December 31, 2018 are as follows: 2019 $ 64,099 2020 36,387 2021 764,980 2022 54 2023 248,873 Future years 2,742,480 Total $ 3,856,873

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Defined Benefit Pension Plans The Company sponsors defined benefit pension plans that cover certain U.S., Canadian, German, and United Kingdom employees and which provide benefits of stated amounts for each year of service of the employee. The Company uses a December 31 measurement date for the plans. The following tables provide information regarding the Company’s defined benefit pension plans summarized by U.S. and international components. Obligations and Funded Status U.S. International In thousands 2018 2017 2018 2017 Change in projected benefit obligation Obligation at beginning of year $ (44,213 ) $ (45,512 ) $ (353,017 ) $ (319,551 ) Opening balance sheet adjustment — — — (5,321 ) Service cost (349 ) (344 ) (2,611 ) (2,740 ) Interest cost (1,332 ) (1,422 ) (7,047 ) (7,310 ) Employee contributions — — (448 ) (880 ) Plan settlements and amendments — — 15,191 4,153 Benefits paid 3,476 3,079 13,453 12,906 Acquisition — — (864 ) — Actuarial gain (loss) 2,942 (14 ) 6,740 (3,009 ) Effect of currency rate changes — — 19,337 (31,265 ) Obligation at end of year $ (39,476 ) $ (44,213 ) $ (309,266 ) $ (353,017 ) Change in plan assets Fair value of plan assets at beginning of year $ 37,432 $ 35,802 $ 281,602 $ 241,283 Opening balance sheet adjustment — — — 2,058 Actual return on plan assets (1,983 ) 4,223 (6,938 ) 19,102 Employer contributions — 486 10,821 13,479 Employee contributions — — 448 880 Benefits paid (3,476 ) (3,079 ) (13,453 ) (12,905 ) Settlements — — (16,601 ) (4,523 ) Effect of currency rate changes — — (16,380 ) 22,228 Fair value of plan assets at end of year $ 31,973 $ 37,432 $ 239,499 $ 281,602 Funded status Fair value of plan assets $ 31,973 $ 37,432 $ 239,499 $ 281,602 Benefit obligations (39,476 ) (44,213 ) (309,266 ) (353,017 ) Funded status $ (7,503 ) $ (6,781 ) $ (69,767 ) $ (71,415 ) Amounts recognized in the statement of financial position consist of: Noncurrent assets $ — $ — $ 8,910 $ 10,577 Current liabilities — — (2,062 ) (2,158 ) Noncurrent liabilities (7,503 ) (6,781 ) (76,615 ) (79,834 ) Net amount recognized $ (7,503 ) $ (6,781 ) $ (69,767 ) $ (71,415 ) Amounts recognized in accumulated other comprehensive income (loss) consist of: Prior service cost (3 ) (6 ) (1,419 ) (32 ) Net actuarial loss (20,268 ) (20,418 ) (58,748 ) (54,043 ) Net amount recognized $ (20,271 ) $ (20,424 ) $ (60,167 ) $ (54,075 ) The aggregate accumulated benefit obligation for the U.S. pension plans was $38.8 million and $43.3 million as of December 31, 2018 and 2017 , respectively. The aggregate accumulated benefit obligation for the international pension plans was $301.1 million and $344.3 million as of December 31, 2018 and 2017 , respectively. U.S. International In thousands 2018 2017 2018 2017 Information for pension plans with accumulated benefit obligations in excess of Plan assets: Projected benefit obligation $ (39,476 ) $ (44,213 ) $ (251,010 ) $ (282,077 ) Accumulated benefit obligation (38,805 ) (43,340 ) (243,613 ) (274,557 ) Fair value of plan assets 31,973 37,432 172,333 200,218 Information for pension plans with projected benefit obligations in excess of plan assets: Projected benefit obligation $ (39,476 ) $ (44,213 ) $ (251,010 ) $ (283,106 ) Fair value of plan assets 31,973 37,432 172,333 201,115 Components of Net Periodic Benefit Costs U.S. International In thousands 2018 2017 2016 2018 2017 2016 Service cost $ 349 $ 344 $ 337 $ 2,611 $ 2,740 $ 1,379 Interest cost 1,332 1,422 1,475 7,047 7,310 5,774 Expected return on plan assets (1,780 ) (1,731 ) (2,076 ) (13,458 ) (12,412 ) (9,971 ) Amortization of initial net obligation and prior service cost 3 3 3 22 27 61 Amortization of net loss 970 989 914 2,149 2,846 1,818 Settlement and curtailment losses recognized — — — 3,112 768 218 Net periodic benefit cost $ 874 $ 1,027 $ 653 $ 1,483 $ 1,279 $ (721 ) Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income during 2018 are as follows: In thousands U.S. International Net gain (loss) arising during the year $ (820 ) $ (13,655 ) Effect of exchange rates — 3,690 Amortization, settlement, or curtailment recognition of net transition obligation — 3,112 Amortization or curtailment recognition of prior service cost 3 (1,388 ) Amortization or settlement recognition of net loss 970 2,149 Total recognized in other comprehensive gain $ 153 $ (6,092 ) Total recognized in net periodic benefit cost and other comprehensive gain $ (721 ) $ (7,575 ) The weighted average assumptions in the following table represent the rates used to develop the actuarial present value of the projected benefit obligation for the year listed. U.S. International 2018 2017 2016 2018 2017 2016 Discount rate 4.30 % 3.56 % 3.95 % 2.53 % 2.40 % 2.51 % Expected return on plan assets 5.15 % 4.95 % 5.70 % 5.10 % 5.02 % 6.07 % Rate of compensation increase 3.00 % 3.00 % 3.00 % 2.61 % 2.54 % 2.54 % The discount rate is based on settling the pension obligation with high grade, high yield corporate bonds, and the rate of compensation increase is based on actual experience. The expected return on plan assets is based on historical performance as well as expected future rates of return on plan assets considering the current investment portfolio mix and the long-term investment strategy. As of December 31, 2018 , the following table represents the amounts included in other comprehensive loss that are expected to be recognized as components of periodic benefit costs in 2019 . In thousands U.S. International Prior service cost 3 53 Net actuarial loss 826 2,512 $ 829 $ 2,565 Pension Plan Assets The Company has established formal investment policies for the assets associated with our pension plans. Objectives include maximizing long-term return at acceptable risk levels and diversifying among asset classes. Asset allocation targets are based on periodic asset liability study results which help determine the appropriate investment strategies. The investment policies permit variances from the targets within certain parameters. The plan assets consist primarily of equity security funds, debt security funds, and temporary cash and cash equivalent investments. The assets held in these funds are generally actively managed and are valued at the net asset value per share multiplied by the number of shares held as of the measurement date. (See Note 20 “Fair Value Measurement” included herein). Plan assets by asset category at December 31, 2018 and 2017 are as follows: U.S. International In thousands 2018 2017 2018 2017 Pension Plan Assets Equity security funds $ 13,162 $ 18,122 $ 95,058 $ 100,453 Debt security funds and other 17,528 18,304 140,894 178,730 Cash and cash equivalents 1,283 1,006 3,547 2,419 Fair value of plan assets $ 31,973 $ 37,432 $ 239,499 $ 281,602 The U.S. plan has a target asset allocation of 50% equity securities and 50% debt securities. The International plan has a target asset allocation of 31% equity securities, 40% debt securities and 29% in other investments. Investment policies are determined by the respective Plan’s Pension Committee and set forth in its Investment Policy. Rebalancing of the asset allocation occurs on a quarterly basis. The following tables summarize our pension plan assets measured at fair value on a recurring basis by fair value hierarchy level (See Note 20): December 31, 2018 In thousands NAV Level 1 Level 2 Level 3 Total US: Equity $ — $ 13,162 $ — $ — $ 13,162 Debt Securities and other — 4,523 13,005 — 17,528 Cash and cash equivalents — 1,283 — — 1,283 International: Equity $ 3,710 $ 34,848 $ 56,500 $ — $ 95,058 Debt Securities and other — — 125,587 — 125,587 Insurance Contracts — — 5,383 9,924 15,307 Cash and cash equivalents — 3,547 — — 3,547 Total $ 3,710 $ 57,363 $ 200,475 $ 9,924 $ 271,472 December 31, 2017 In thousands NAV Level 1 Level 2 Level 3 Total US: Equity $ — $ 18,122 $ — $ — $ 18,122 Debt Securities — 4,273 14,031 — 18,304 Cash and cash equivalents — 1,006 — — 1,006 International: Equity $ 4,586 $ 38,647 $ 95,641 $ — $ 138,874 Debt Securities — — 111,204 — 111,204 Insurance Contracts — — 15,893 13,123 29,016 Cash and cash equivalents — 2,507 — — 2,507 Total $ 4,586 $ 64,555 $ 236,769 $ 13,123 $ 319,033 The following table presents a reconciliation of Level 3 assets: In thousands Total Balance at December 31, 2016 $ 12,996 Net purchases, issuances, and settlements 778 Actual return of plan assets 375 Opening balance sheet adjustment (1,308 ) Effect of currency rate changes 282 Balance at December 31, 2017 $ 13,123 Net purchases, issuances, and settlements (3,611 ) Actual return of plan assets 277 Transfers 658 Effect of currency rate changes (523 ) Balance at December 31, 2018 $ 9,924 Cash Flows The Company’s funding methods are based on governmental requirements and differ from those methods used to recognize pension expense. The Company expects to contribute $6.4 million to the international plans during 2019. The company does not expect to make contributions to the U.S. plans during 2019. Benefit payments expected to be paid to plan participants are as follows: In thousands U.S. International Year ended December 31, 2019 $ 3,233 $ 11,556 2020 3,242 12,017 2021 3,100 12,489 2022 3,095 13,353 2023 3,077 13,583 2024 through 2028 13,623 75,457 Postretirement Benefit Plans In addition to providing pension benefits, the Company has provided certain unfunded postretirement health care and life insurance benefits for a portion of North American employees. The Company is not obligated to pay health care and life insurance benefits to individuals who had retired prior to 1990. The Company uses a December 31 measurement date for all postretirement plans. The following tables provide information regarding the Company’s post retirement benefit plans summarized by U.S. and international components. Obligations and Funded Status U.S. International In thousands 2018 2017 2018 2017 Change in projected benefit obligation Obligation at beginning of year $ (11,345 ) $ (11,876 ) $ (3,720 ) $ (3,425 ) Service cost (5 ) (5 ) (31 ) (28 ) Interest cost (326 ) (350 ) (100 ) (98 ) Benefits paid 786 970 201 199 Actuarial gain (loss) 1,072 (84 ) 646 (131 ) Effect of currency rate changes — — 335 (237 ) Obligation at end of year $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) Change in plan assets Fair value of plan assets at beginning of year $ — $ — $ — $ — Employer contributions 786 970 201 199 Benefits paid (786 ) (970 ) (201 ) (199 ) Fair value of plan assets at end of year $ — $ — $ — $ — Funded status Fair value of plan assets $ — $ — $ — $ — Benefit obligations (9,818 ) (11,345 ) (2,669 ) (3,720 ) Funded status $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) U.S. International In thousands 2018 2017 2018 2017 Amounts recognized in the statement of financial position consist of: Current liabilities $ (984 ) $ (1,046 ) $ (175 ) $ (208 ) Noncurrent liabilities (8,834 ) (10,299 ) (2,494 ) (3,512 ) Net amount recognized $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) Amounts recognized in accumulated other comprehensive income (loss) consist of: Prior service credit 18,097 19,616 2 9 Net actuarial (loss) gain (16,593 ) (18,882 ) 748 154 Net amount recognized $ 1,504 $ 734 $ 750 $ 163 Components of Net Periodic Benefit Cost U.S. International In thousands 2018 2017 2016 2018 2017 2016 Service cost $ 5 $ 5 $ 4 $ 31 $ 28 $ 29 Interest cost 326 350 389 100 98 99 Amortization of initial net obligation and prior service cost (1,519 ) (1,519 ) (1,709 ) (7 ) (7 ) (7 ) Amortization of net loss (gain) 1,216 1,225 1,287 (8 ) (23 ) (29 ) Net periodic benefit cost (credit) $ 28 $ 61 $ (29 ) $ 116 $ 96 $ 92 Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income during 2018 are as follows: In thousands U.S. International Net loss arising during the year 1,072 646 Effect of exchange rates — (44 ) Amortization or curtailment recognition of prior service cost (1,519 ) (7 ) Amortization or settlement recognition of net loss (gain) 1,216 (8 ) Total recognized in other comprehensive income (loss) $ 769 $ 587 Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 741 $ 471 The weighted average assumptions in the following table represent the rates used to develop the actuarial present value of the projected benefit obligation for the year listed and also the net periodic benefit cost for the following year. The discount rate is based on settling the pension obligation with high grade, high yield corporate bonds. U.S. International 2018 2017 2016 2018 2017 2016 Discount rate 4.17 % 3.43 % 3.76 % 3.49 % 3.21 % 3.46 % As of December 31, 2018 , the following table represents the amounts included in other comprehensive loss that are expected to be recognized as components of periodic benefit costs in 2019. In thousands U.S. International Prior service credit (1,519 ) (2 ) Net actuarial loss (gain) 1,116 (88 ) Total $ (403 ) $ (90 ) The assumed health care cost trend rate for the U.S. plans grades from an initial rate of 6.30% to an ultimate rate of 4.50% by 2028 and for international plans from 6.04% to 4.50% by 2027 . Cash Flows Benefit payments expected to be paid to plan participants are as follows: In thousands U.S. International Year ended December 31, 2019 $ 983 $ 175 2020 949 171 2021 920 181 2022 879 184 2023 854 196 2024 through 2028 3,661 912 Defined Contribution Plans The Company also participates in certain defined contribution plans and multiemployer pension plans. Costs recognized under these plans are summarized as follows: For the year ended In thousands 2018 2017 2016 Multi-employer pension and health & welfare plans $ 965 $ 1,522 $ 2,054 401(k) savings and other defined contribution plans 27,869 23,209 23,062 Total $ 28,834 $ 24,731 $ 25,116 The 401(k) savings plan is a participant directed defined contribution plan that holds shares of the Company’s stock as one of the investment options. At December 31, 2018 and 2017 , the plan held on behalf of its participants about 442,239 shares with a market value of $31.1 million , and 495,274 shares with a market value of $40.3 million , respectively. Additionally, the Company has stock option based benefit and other plans further described in Note 14. The Company contributes to a multi-employer defined benefit pension plan under a collective bargaining agreement that covers certain of its union-represented employees. The risks of participating in such plans are different from the risks of single-employer plans. Assets contributed to a multi-employer plan by one employer may be used to provide benefits to employees of other participating employers. If a participating employer ceases to contribute to the plan, the unfunded obligations of the plan may be borne by the remaining participating employers. If the Company ceases to have an obligation to contribute to the multi-employer plan in which it had been a contributing employer, it may be required to pay to the plan an amount based on the underfunded status of the plan and on the history of the Company’s participation in the plan prior to the cessation of its obligation to contribute. The amount that an employer that has ceased to have an obligation to contribute to a multi-employer plan is required to pay to the plan is referred to as a withdrawal liability. The Company’s participation in multi-employer plans for the year ended December 31, 2018 is outlined in the table below. For plans that are not individually significant to the Company, the total amount of contributions is presented in the aggregate. Pension Protection FIP/ Contributions by Expiration RP Status Surcharge Collective Pension Fund EIN/PN (a) 2017 2016 Implemented (c) 2018 2017 2016 (d) Agreements Idaho Operating Engineers- EIN # 91-6075538 Green Green No $ 965 (1) $ 1,020 (1 ) $ 1,306 (1 ) No 8/6/2021 Employers Pension Trust Fund Plan# 001 Total Contributions $ 965 $ 1,020 $ 1,306 (1) The Company’s contribution represents more than 5% of the total contributions to the plan. (a) The “EIN / PN” column provides the Employer Identification Number and the three-digit plan number assigned to a plan by the Internal Revenue Service. (b) The most recent Pension Protection Act Zone Status available for 2018 and 2017 is for plan years that ended in 2017 and 2016, respectively. The zone status is based on information provided to the Company and other participating employers by each plan and is certified by the plan’s actuary. A plan in the “red” zone has been determined to be in “critical status”, based on criteria established under the Internal Revenue Code (“Code”), and is generally less than 65% funded. A plan in the “yellow” zone has been determined to be in “endangered status”, based on criteria established under the Code, and is generally less than 80% funded. A plan in the “green” zone has been determined to be neither in “critical status” nor in “endangered status” and is generally at least 80% funded. (c) The “FIP/RP Status Pending/Implemented” column indicates whether a Funding Improvement Plan, as required under the Code to be adopted by plans in the “yellow” zone, or a Rehabilitation Plan, as required under the Code to be adopted by plans in the “red” zone, is pending or has been implemented as of the end of the plan year that ended in 2018 . (d) The “Surcharge Imposed” column indicates whether the Company’s contribution rate for 2018 included an amount in addition the contribution rate specified in the applicable collective bargaining agreement, as imposed by a plan in “critical status”, in accordance with the requirements of the Code.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The Company is responsible for filing consolidated U.S., foreign and combined, unitary or separate state income tax returns. The Company is responsible for paying the taxes relating to such returns, including any subsequent adjustments resulting from the redetermination of such tax liabilities by the applicable taxing authorities. On December 23, 2017, the French government enacted the Finance Act for 2018 and it was published in the Official Bulletin on December 31, 2017. The Finance act reduced the French corporate tax rate from 28% in 2020 to 25%, enacting an additional 1.5% reduction in each year 2021 and 2022. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (the "Tax Act"). The Tax Act makes broad and complex changes to the U.S. tax code that affected fiscal 2017, including, but not limited to requiring a one-time transition tax on certain unrepatriated earnings of foreign subsidiaries that is payable over eight years (the "Transition Tax"). The Tax Act also established new tax laws that affect 2018 and later years, including, but not limited to, a reduction of the U.S. federal corporate tax rate from 35% to 21%, repeals the Domestic Manufacturing Deduction, a general elimination of U.S. federal income taxes on dividends from foreign subsidiaries, new provisions designed to tax global intangible low-taxed income ("GILTI"), tax certain deductible base erosion payments called base erosion and anti-abuse tax (“BEAT”), and new interest expense limitation provisions. In relation to the analysis of the impact of the all tax law changes, the Company recorded a net tax expense of $4.3 million in fiscal 2017. This included a provisional expense for the U.S. tax reform bill of $55.0 million , as well as a net benefit for the revaluation of deferred tax assets and liabilities of $50.7 million . Of this amount, net tax expense of $27.2 million is related to the Tax Act and a benefit of $22.9 million is related to the French Finance Act for 2018. In the current year, the Company has completed its accounting for the income tax effects of the Tax Act. The Company has adjusted the provisional amounts previously recorded in accordance with SEC Staff Accounting Bulletin No. 118. As such, the Company has included the following tax provisions in its financial statements as of December 31, 2018: Revaluation of deferred tax assets and liabilities: The Tax Act reduces the U.S. federal corporate tax rate from 35% to 21% for tax years beginning after December 31, 2017. In addition, the Tax Act made certain changes to the depreciation rules and implemented new limits on the deductibility of certain executive compensation. The Company evaluated these changes and recorded a provisional benefit to net deferred taxes of $24.6 million at December 31, 2017. As a result of the completion of its 2017 U.S. corporate tax return in the current year, the Company has adjusted its U.S. deferred tax balances which has resulted in a current period benefit of $5.1 million . The Company has completed its calculation of the impact of these changes on its deferred tax balances. As of December 31, 2018, the Company has completed its analysis of the impact of the Tax Act on the deductibility of certain executive compensation. As a result, no further adjustments were made as of December 31, 2018. Transition Tax on unrepatriated foreign earnings: The Transition Tax on unrepatriated foreign earnings is a tax on previously untaxed accumulated and current earnings and profits ("E&P") of the Company's foreign subsidiaries. To determine the amount of the Transition Tax, the Company had to determine, among other factors, the amount of post-1986 E&P of its foreign subsidiaries, as well as the amount of non-U.S. income taxes paid on such earnings. The Company was able to make a reasonable estimate of the Transition Tax and recorded a provisional Transition Tax expense of $51.8 million at December 31, 2017. As of December 31, 2018, the Company has completed its calculation of the Transition Tax which resulted in a benefit of $14.4 million for the twelve months ended December 31, 2018. Global intangible low taxed income ("GILTI"): The Tax Act created a new requirement that certain income (i.e., GILTI) earned by foreign subsidiaries must be included currently in the gross income of the U.S. shareholder. Under U.S. GAAP, the Company is permitted to make an accounting policy election to either treat taxes due on future inclusions in U.S. taxable income related to GILTI as a current-period expense when incurred or to factor such amounts into the Company's measurement of its deferred taxes. The Company has made the election to treat taxes due on future inclusions related to GILTI as current period expense and has included a current period expense of $9.3 million in its financial statements as of December 31, 2018. Indefinite reinvestment assertion: Beginning in 2018, the Tax Act provides a 100% deduction for dividends received from 10-percent owned foreign corporations by U.S. corporate shareholders, subject to a one-year holding period. Although dividend income is now exempt from U.S. federal tax in the hands of the U.S. corporate shareholders, companies must still apply the guidance of ASC 740 to account for the tax consequences of outside basis differences and other tax impacts of their investments in non-U.S. subsidiaries. While the Company has finalized its calculation of the Transition Tax on the deemed repatriated earnings that were previously indefinitely reinvested, the Company was unable to determine a reasonable estimate of the remaining tax liability, if any, under the Tax Act for its remaining outside basis differences. Therefore, the Company has not included a provisional amount for this item in its financial statements for fiscal year ended December 31, 2018. The components of the income from operations before provision for income taxes for the Company’s domestic and foreign operations for the years ended December 31 are provided below: For the year ended In thousands 2018 2017 2016 Domestic $ 145,096 $ 140,325 $ 276,218 Foreign 222,486 211,738 136,619 Income from operations before income taxes $ 367,582 $ 352,063 $ 412,837 The consolidated provision for income taxes included in the Statement of Income consisted of the following: For the year ended December 31, In thousands 2018 2017 2016 Current taxes Federal $ 6,940 $ 86,157 $ 72,317 State 5,771 3,644 9,953 Foreign 68,467 67,395 27,391 81,178 157,196 109,661 Deferred taxes Federal 4,689 (22,863 ) 11,013 State 1,263 (1,024 ) 1,953 Foreign (11,251 ) (43,536 ) (23,194 ) (5,299 ) (67,423 ) (10,228 ) Total provision $ 75,879 $ 89,773 $ 99,433 A reconciliation of the United States federal statutory income tax rate to the effective income tax rate on operations for the years ended December 31 is provided below: For the year ended December 31, In thousands 2018 2017 2016 U.S. federal statutory rate 21.0 % 35.0 % 35.0 % State taxes 1.6 0.4 2.1 Foreign 0.7 (8.3 ) (4.3 ) Research and development credit (1.1 ) (0.8 ) (1.0 ) Manufacturing deduction — (1.1 ) (1.8 ) France tax rate change — (6.5 ) (6.5 ) U.S. tax rate change (0.6 ) (7.9 ) — U.S. tax reform (benefit) provision (1.4 ) 15.6 — Transaction costs related to acquisitions — — 1.5 Other, net 0.4 (0.9 ) (0.9 ) Effective rate 20.6 % 25.5 % 24.1 % The decrease in the effective tax rate in 2018 is primarily due to the application of the U.S. tax rate change which resulted in the reduction of the corporate income tax rate in the U.S. from 35.0% to 21.0%, a higher earnings mix in lower tax jurisdictions as well as a benefit from the completion of the accounting for the income tax effects of the Tax Act and the adjustment to the provisional amounts previously recorded in accordance with SEC Staff Accounting Bulletin No. 118. Components of deferred tax assets and liabilities were as follows: December 31, In thousands 2018 2017 Deferred income tax assets: Accrued expenses and reserves $ 13,795 $ 10,961 Warranty reserve 25,944 20,211 Deferred compensation/employee benefits 8,994 18,353 Pension and postretirement obligations 19,532 21,637 Inventory 16,769 19,620 Net operating loss carry forwards 85,051 65,671 Other 20,048 14,974 Gross deferred income tax assets 190,133 171,427 Valuation allowance 41,779 25,683 Total deferred income tax assets 148,354 145,744 Deferred income tax liabilities: Property, plant & equipment 35,440 37,015 Intangibles 287,419 288,141 Total deferred income tax liabilities 322,859 325,156 Net deferred income tax liability $ (174,505 ) $ (179,412 ) A valuation allowance is provided when it is more likely than not that some portion or all of the deferred tax assets will not be realized. As of December 31, 2018, the valuation allowance for certain foreign deferred tax asset carryforwards was $41.8 million primarily in China, France, the Netherlands, United Kingdom, and South Africa. Net operating loss carry-forwards in the amount of $342.5 million expire in various periods from December 31, 2019 to December 31, 2038. As of December 31, 2018, the liability for income taxes associated with unrecognized tax benefits was $9.5 million , of which $8.4 million , if recognized, would favorably affect the Company’s effective income tax rate. As of December 31, 2017, the liability for income taxes associated with unrecognized tax benefits was $6.9 million , of which $4.4 million , if recognized, would favorably affect the Company’s effective tax rate. A reconciliation of the beginning and ending amount of the liability for income taxes associated with unrecognized tax benefits follows: In thousands 2018 2017 2016 Gross liability for unrecognized tax benefits at beginning of year $ 6,910 $ 8,423 $ 10,557 Gross increases - unrecognized tax benefits in prior periods 5,389 2,466 6 Gross decreases - audit settlement during year — (3,979 ) — Gross decreases - expiration of audit statute of limitations (2,756 ) — (2,140 ) Gross liability for unrecognized tax benefits at end of year $ 9,543 $ 6,910 $ 8,423 The Company includes interest and penalties related to unrecognized tax benefits in income tax expense. As of December 31, 2018, the total interest and penalties accrued was approximately $0.9 million . As of December 31, 2017, the total interest and penalties accrued was approximately $0.8 million . With limited exception, the Company is no longer subject to examination by various U.S. and foreign taxing authorities for years before 2013. At this time, the Company believes that it is reasonably possible that unrecognized tax benefits of approximately $4.1 million may change within the next 12 months due to the expiration of statutory review periods and current examinations.

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The computation of earnings per share from operations is as follows: For the Year Ended December 31, In thousands, except per share data 2018 2017 2016 Numerator Numerator for basic and diluted earnings per common share - net income attributable to Wabtec shareholders $ 294,944 $ 262,261 $ 304,887 Less: dividends declared - common shares and non-vested restricted stock (46,277 ) (42,218 ) (32,430 ) Undistributed earnings 248,667 220,043 272,457 Percentage allocated to common shareholders (1) 99.7 % 99.7 % 99.7 % 247,921 219,383 271,640 Add: dividends declared - common shares 46,173 42,092 32,333 Numerator for basic and diluted earnings per common share $ 294,094 $ 261,475 $ 303,973 Denominator Denominator for basic earnings per common share - weighted average shares 95,994 95,453 90,359 Effect of dilutive securities: Assumed conversion of dilutive stock-based compensation plans 470 672 782 Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversion 96,464 96,125 91,141 Net income per common share attributable to Wabtec shareholders Basic $ 3.06 $ 2.74 $ 3.37 Diluted $ 3.05 $ 2.72 $ 3.34 (1) Basic weighted-average common shares outstanding 95,994 95,453 90,359 Basic weighted-average common shares outstanding and non-vested restricted stock expected to vest 96,281 95,740 90,627 Percentage allocated to common shareholders 99.7 % 99.7 % 99.7 % Options to purchase approximately 135,000 , 24,000 , and 20,000 shares of Common Stock were outstanding in 2018 , 2017 and 2016 , respectively, but were not included in the computation of diluted earnings because their impact would have been antidilutive.

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION PLANS	STOCK-BASED COMPENSATION PLANS As of December 31, 2018 , the Company maintains employee stock-based compensation plans for stock options, restricted stock, and incentive stock units as governed by the 2011 Stock Incentive Compensation Plan, as amended and restated (the “2011 Plan”) and the 2000 Stock Incentive Plan, as amended (the “2000 Plan”). The 2011 Plan has a term through May 10, 2027 and as of December 31, 2018 the number of shares available for future grants under the 2011 Plan was 2,800,836 shares, which includes remaining shares to grant under the 2000 Plan. The amendment and restatement of the 2011 Plan was approved by stockholders of Wabtec on May 10, 2017. The Company also maintains a 1995 Non-Employee Directors’ Fee and Stock Option Plan as amended and restated (“the Directors Plan”). The amendment and restatement of the Directors Plan was approved by stockholders of Wabtec on May 10, 2017. The Directors Plan, as amended, authorizes a total of 1,000,000 shares of Common Stock to be issued. Under the Directors Plan options issued become exercisable over a three -year vesting period and expire ten years from the date of grant and restricted stock issued under the plan vests one year from the date of grant. As compensation for directors’ fees for the years ended December 31, 2018 , 2017 and 2016 , the Company issued a total of 12,960 , 16,500 and 16,972 shares of restricted stock to non-employee directors. The total number of shares issued under the plan as of December 31, 2018 was 894,152 shares. Stock-based compensation expense for all of the plans was $25.3 million , $21.3 million and $20.8 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The Company recognized associated tax benefits related to the stock-based compensation plans of $6.3 million , $8.9 million and $14.9 million for the respective periods. Included in the stock-based compensation expense for 2018 above is $1.6 million of expense related to stock options, $7.1 million related to non-vested restricted stock, $5.1 million related to restricted stock units, $10.3 million related to incentive stock units and $1.2 million related to units issued for Directors’ fees. At December 31, 2018 , unamortized compensation expense related to those stock options, non-vested restricted shares and incentive stock units expected to vest totaled $27.1 million and will be recognized over a weighted period of 1.3 years. Stock Options Stock options are granted to eligible employees and directors at the fair market value, which is the average of the high and low Wabtec stock price on the date of grant. Under the 2011 Plan and the 2000 Plan, options become exercisable over a four year vesting period and expire 10 years from the date of grant. The following table summarizes the Company’s stock option activity and related information for the 2011 Plan, the 2000 Plan and Directors Plan for the years ended December 31: Options Weighted Weighted Average Aggregate Outstanding at December 31, 2015 1,097,323 $ 32.70 4.8 $ 42,154 Granted 94,115 61.39 2,035 Exercised (83,790 ) 25.58 (4,813 ) Canceled (8,825 ) 71.47 (102 ) Outstanding at December 31, 2016 1,098,823 $ 35.39 4.3 $ 52,332 Granted 65,522 86.91 — Exercised (166,838 ) 21.37 (10,020 ) Canceled (13,995 ) 76.89 (64 ) Outstanding at December 31, 2017 983,512 $ 32.52 4.0 $ 40,137 Granted 82,580 77.54 — Exercised (582,303 ) 28.29 (24,433 ) Canceled (17,112 ) 69.76 (8 ) Outstanding at December 31, 2018 466,677 $ 61.04 5.7 $ 4,298 Exercisable at December 31, 2018 283,169 $ 50.60 4.6 $ 5,564 Options outstanding at December 31, 2018 were as follows: Number of Weighted Weighted Number of Weighted Average Range of exercise prices Outstanding Outstanding Life Exercisable Exercisable Under $35.00 71,765 $ 27.84 2.0 71,765 $ 27.84 35.00 - 50.00 107,034 41.36 3.6 107,034 41.36 50.00 - 65.00 65,199 61.33 7.1 24,615 61.33 65.00 - 80.00 98,981 72.21 7.6 38,187 72.85 Over 80.00 123,698 88.25 7.5 41,568 86.90 466,677 $ 61.04 283,169 $ 50.60 The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions: For the year ended December 31, 2018 2017 2016 Dividend yield 0.31 % 0.23 % 0.26 % Risk-free interest rate 2.8 % 2.2 % 1.5 % Stock price volatility 23.9 % 23.4 % 26.9 % Expected life (years) 5.0 5.0 5.0 Weighted average fair value of options granted during the year $ 20.59 $ 20.69 $ 14.96 The dividend yield is based on the Company’s dividend rate and the current market price of the underlying common stock at the date of grant. Expected life in years is determined from historical stock option exercise data. Expected volatility is based on the historical volatility of the Company’s stock. The risk-free interest rate is based on the 7 years U.S. Treasury bond rates for the expected life of the option. Restricted Stock and Incentive Stock Beginning in 2006 the Company adopted a restricted stock program. As provided for under the 2011 and 2000 Plans, eligible employees are granted restricted stock that generally vests over four years from the date of grant. Under the Directors Plan, restricted stock units vest one year from the date of grant. In addition, the Company has issued incentive stock units to eligible employees that vest upon attainment of certain cumulative three -year performance goals. Based on the Company’s performance for each three year period then ended, the incentive stock units can vest and be awarded ranging from 0% to 200% of the initial incentive stock units granted. The incentive stock units included in the table below represent the number of shares that are expected to vest based on the Company’s estimate for meeting those established performance targets. As of December 31, 2018 , the Company estimates that it will achieve 81% , 97% and 107% for the incentive stock units expected to vest based on performance for the three year periods ending December 31, 2018 , 2019 , and 2020 , respectively, and has recorded incentive compensation expense accordingly. If estimates of the number of these stock units expected to vest changes in a future accounting period, cumulative compensation expense could increase or decrease and will be recognized in the current period for the elapsed portion of the vesting period and would change future expense for the remaining vesting period. Compensation expense for the non-vested restricted stock and incentive stock units is based on the closing price of the Company’s common stock on the date of grant and recognized over the applicable vesting period. The following table summarizes the restricted stock activity and related information for the 2011 Plan, the 2000 Plan, and Directors Plan, and incentive stock units activity and related information for the 2011 Plan and the 2000 Plan with related information for the years ended December 31: Restricted Incentive Weighted Outstanding at December 31, 2015 356,885 541,638 $ 65.89 Granted 212,600 167,850 66.03 Vested (159,975 ) (236,591 ) 51.80 Adjustment for incentive stock awards expected to vest — (38,164 ) 74.42 Canceled (13,215 ) (9,983 ) 71.84 Outstanding at December 31, 2016 396,295 424,750 $ 72.18 Granted 153,516 157,025 86.66 Vested (137,088 ) (153,271 ) 70.34 Adjustment for incentive stock awards expected to vest — (87,592 ) 73.69 Canceled (13,723 ) (13,579 ) 76.61 Outstanding at December 31, 2017 399,000 327,333 $ 78.76 Granted 224,060 175,100 73.76 Vested (148,644 ) (93,312 ) 81.55 Adjustment for incentive stock awards expected to vest — 32,996 74.62 Canceled (29,327 ) (26,875 ) 78.60 Outstanding at December 31, 2018 445,089 415,242 $ 75.51

OTHER COMPREHENSIVE LOSS

OTHER COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
OTHER COMPREHENSIVE LOSS	OTHER COMPREHENSIVE LOSS The components of accumulated other comprehensive loss were: December 31, In thousands 2018 2017 Foreign currency translation gain (loss) $ (202,204 ) $ 5,063 Unrealized gain (loss) on interest rate swap contracts, net of tax of $16 and $1,338 (53 ) 4,015 Unrealized loss on pension and post-retirement benefit plans, net of tax of $23,049 and $19,532 (54,326 ) (54,070 ) Total accumulated other comprehensive loss $ (256,583 ) $ (44,992 ) The changes in accumulated other comprehensive loss by component, net of tax, for the year-ended December 31, 2018 are as follows: Foreign Derivative Pension and In thousands translation contracts benefits plans Total Balance at December 31, 2017 $ 5,063 $ 4,015 $ (54,070 ) $ (44,992 ) Other comprehensive income before reclassifications (207,267 ) (7,803 ) (2,319 ) (217,389 ) Amounts reclassified from accumulated other comprehensive income — 3,735 2,063 5,798 Net current period other comprehensive income (207,267 ) (4,068 ) (256 ) (211,591 ) Balance at December 31, 2018 $ (202,204 ) $ (53 ) $ (54,326 ) $ (256,583 ) Reclassifications out of accumulated other comprehensive loss for the year-ended December 31, 2018 are as follows: Amount reclassified from Affected line item in the In thousands comprehensive income Statements of Income Amortization of defined pension and post retirement items Amortization of initial net obligation and prior service cost $ (1,501 ) Other income, net Amortization of net loss (gain) 4,327 Other income, net 2,826 Other income, net (763 ) Income tax expense $ 2,063 Net income Derivative contracts Realized loss on derivative contracts 4,915 Interest expense, net (1,180 ) Income tax expense $ 3,735 Net income The changes in accumulated other comprehensive loss by component, net of tax, for the year-ended December 31, 2017 are as follows: Foreign Derivative Pension and In thousands translation contracts benefits plans Total Balance at December 31, 2016 $ (321,033 ) $ (2,957 ) $ (55,615 ) $ (379,605 ) Other comprehensive income before reclassifications 326,096 6,712 (1,017 ) 331,791 Amounts reclassified from accumulated other comprehensive income — 260 2,562 2,822 Net current period other comprehensive income 326,096 6,972 1,545 334,613 Balance at December 31, 2017 $ 5,063 $ 4,015 $ (54,070 ) $ (44,992 ) Reclassifications out of accumulated other comprehensive loss for the year-ended December 31, 2017 are as follows: Amount reclassified from Affected line item in the In thousands comprehensive income Statements of Income Amortization of defined pension and post retirement items Amortization of initial net obligation and prior service cost $ (1,496 ) Other income, net Amortization of net loss (gain) 5,037 Other income, net 3,541 Other income, net (979 ) Income tax expense $ 2,562 Net income Derivative contracts Realized loss on derivative contracts 400 Interest expense, net (140 ) Income tax expense $ 260 Net income

OPERATING LEASES

OPERATING LEASES	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
OPERATING LEASES	OPERATING LEASES The Company leases office and manufacturing facilities under operating leases with terms ranging from one to 15 years , excluding renewal options. Total net rental expense charged to operations in 2018 , 2017 , and 2016 was $40.1 million , $34.6 million and $27.2 million , respectively. The amounts above are shown net of sublease rentals which were immaterial for the years 2018 , 2017 and 2016 , respectively. Future minimum rental payments under operating leases with remaining non-cancelable terms in excess of one year are as follows: Real In thousands Estate Equipment Total 2019 $ 31,428 $ 5,001 $ 36,429 2020 28,132 2,636 30,768 2021 22,897 1,752 24,649 2022 18,020 825 18,845 2023 16,267 391 16,658 2024 and after 63,061 — 63,061

WARRANTIES

WARRANTIES	12 Months Ended
	Dec. 31, 2018
Product Warranties Disclosures [Abstract]
WARRANTIES	WARRANTIES The following table reconciles the changes in the Company’s product warranty reserve as follows: In thousands 2018 2017 Balance at beginning of year $ 153,063 $ 138,992 Warranty expense 57,988 50,385 Acquisitions 3,135 806 Warranty claim payments (54,111 ) (48,548 ) Foreign currency impact (6,373 ) 11,428 Balance at end of year $ 153,702 $ 153,063

PREFERRED STOCK

PREFERRED STOCK	12 Months Ended
	Dec. 31, 2018
Disclosure Preferred Stock Additional Information [Abstract]
PREFERRED STOCK	PREFERRED STOCK The Company’s authorized capital stock includes 1,000,000 shares of preferred stock. The Board of Directors has the authority to issue the preferred stock and to fix the designations, powers, preferences and rights of the shares of each such class or series, including dividend rates, conversion rights, voting rights, terms of redemption and liquidation preferences, without any further vote or action by the Company’s shareholders. The rights and preferences of the preferred stock would be superior to those of the common stock. At December 31, 2018 and 2017 there was no preferred stock issued or outstanding.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING Foreign Currency Hedging The Company uses forward contracts to mitigate its foreign currency exchange rate exposure due to forecasted sales of finished goods and future settlement of foreign currency denominated assets and liabilities. Derivatives used to hedge forecasted transactions and specific cash flows associated with foreign currency denominated financial assets and liabilities that meet the criteria for hedge accounting are designated as cash flow hedges. The effective portion of gains and losses is deferred as a component of accumulated other comprehensive income and is recognized in earnings at the time the hedged item affects earnings, in the same line item as the underlying hedged item. The contracts are scheduled to mature within two years. For the years ended December 31, 2018 , 2017 and 2016, the amounts reclassified into income were not material. Other Activities The Company enters into certain derivative contracts in accordance with its risk management strategy that do not meet the criteria for hedge accounting but which have the impact of largely mitigating foreign currency exposure. These foreign exchange contracts are accounted for on a full mark to market basis through earnings, with gains and losses recorded as a component of other expense, net. The net unrealized gain related to these contracts was $2.9 million and $2.1 million for the years ended December 31, 2018 and 2017 , respectively. The net unrealized gain related to these contracts for the year ended December 31, 2016 was not material. These contracts are scheduled to mature within one year. The following table summarizes the gross notional amounts and fair values of the designated and non-designated hedges discussed in the above sections as of December 31, 2018 : In millions Designated Non-Designated Total Gross notional amount $ 863.0 $ 834.0 $ 1,697.0 Fair Value: Other current assets $ — $ 1.3 $ 1.3 Other current liabilities (2.3 ) — (2.3 ) Total $ (2.3 ) $ 1.3 $ (1.0 ) The following table summarizes the gross notional amounts and fair values of the designated and non-designated hedged discussed in the above sections as of December 31, 2017 : In millions Designated Non-Designated Total Gross notional amount $ 805.1 $ 379.7 $ 1,184.8 Fair Value: Other current assets 3.5 2.1 $ 5.6 Other current liabilities — — $ — Total $ 3.5 $ 2.1 $ 5.6 Interest Rate Hedging The Company used interest rate swaps to manage interest rate exposures. The Company is exposed to interest rate volatility with regard to existing floating rate debt. Primary exposure includes the London Interbank Offered Rates (LIBOR). Derivatives used to hedge risk associated with changes in the fair value of certain variable-rate debt are primarily designated as fair value hedges. Consequently, changes in the fair value of these derivatives, along with changes in the fair value of debt obligations are recognized in current period earnings. Refer to footnote 20 for further information on interest rate swaps.

FAIR VALUE MEASUREMENT AND FAIR

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS	FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS ASC 820 “Fair Value Measurements and Disclosures” defines fair value, establishes a framework for measuring fair value and explains the related disclosure requirements. ASC 820 indicates, among other things, that a fair value measurement assumes that the transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability and defines fair value based upon an exit price model. Valuation Hierarchy. ASC 820 establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s assumptions used to measure assets and liabilities at fair value. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The following table provides the liabilities carried at fair value measured on a recurring basis as of December 31, 2017 , which are included in other current liabilities on the Consolidated Balance sheet: Fair Value Measurements at December 31, 2017 Using Total Carrying Quoted Prices in Significant Other Significant In thousands 2017 (Level 1) (Level 2) (Level 3) Interest rate swap agreements 1,163 — 1,163 — Total $ 1,163 $ — $ 1,163 $ — To reduce the impact of interest rate changes on a portion of its variable-rate debt, the Company entered into interest rate swaps which effectively converted a portion of the debt from variable to fixed-rate borrowings during the term of the swap contracts. For certain derivative contracts whose fair values are based upon trades in liquid markets, such as interest rate swaps, valuation model inputs can generally be verified and valuation techniques do not involve significant management judgment. The fair values of such financial instruments are generally classified within Level 2 of the fair value hierarchy. As a result of our global operating activities the Company is exposed to market risks from changes in foreign currency exchange rates, which may adversely affect our operating results and financial position. When deemed appropriate, the Company minimizes these risks through entering into foreign currency forward contracts. The foreign currency forward contracts are valued using broker quotations, or market transactions in either the listed or over-the counter markets. As such, these derivative instruments are classified within level 2. The Company’s cash and cash equivalents are highly liquid investments purchased with an original maturity of three months or less and are considered Level 1 on the fair value valuation hierarchy. The fair value of cash and cash equivalents approximated the carrying value at December 31, 2018 and December 31, 2017 . The Company’s defined benefit pension plan assets consist primarily of equity security funds, debt security funds and temporary cash and cash equivalent investments. These investments are comprised of a number of investment funds that invest in a diverse portfolio of assets including equity securities, corporate and governmental bonds, and money markets. Trusts are valued at the net asset value (“NAV”) as determined by their custodian. NAV represents the accumulation of the unadjusted quoted close prices on the reporting date for the underlying investments divided by the total shares outstanding at the reporting dates. The 2013 and 2016 Notes are considered Level 2 based on the fair value valuation hierarchy. The estimated fair values and related carrying values of the Company’s financial instruments are as follows: December 31, 2018 December 31, 2017 Carry Fair Carry Fair In thousands Value Value Value Value Interest rate swap agreements $ — $ — $ 1,163 $ 1,163 4.375% Senior Notes, due 2023 248,823 254,218 248,567 262,033 3.45% Senior Notes, due 2026 748,282 675,075 747,655 741,113 Floating Rate Notes, due 2021 496,796 497,425 — — 4.15% Senior Notes, due 2024 742,957 727,350 — — 4.7% Senior Notes, due 2028 1,239,657 1,179,625 — — The fair value of the Company’s interest rate swap agreements and all the Notes were based on dealer quotes and represent the estimated amount the Company would pay to the counterparty to terminate the agreement.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES The Company is subject to a variety of environmental laws and regulations governing discharges to air and water, the handling, storage and disposal of hazardous or solid waste materials and the remediation of contamination associated with releases of hazardous substances. The Company believes its operations currently comply in all material respects with all of the various environmental laws and regulations applicable to our business; however, there can be no assurance that environmental requirements will not change in the future or that we will not incur significant costs to comply with such requirements. Under terms of the purchase agreement and related documents for the 1990 Acquisition, Ingersoll Rand, the successor-in-interest to American Standard, Inc. (“Ingersoll”), has indemnified the Company for certain items including, among other things, certain environmental claims the Company asserted prior to 2000. If Ingersoll was unable to honor or meet these indemnifications, the Company would be responsible for such items. In the opinion of Management, Ingersoll currently has the ability to meet its indemnification obligations. Claims have been filed against the Company and certain of its affiliates in various jurisdictions across the United States by persons alleging bodily injury as a result of exposure to asbestos-containing products. Most of these claims have been made against our wholly owned subsidiary, Railroad Friction Products Corporation (“RFPC”), and are based on a product sold by RFPC prior to the time that the Company acquired any interest in RFPC. Most of these claims, including all of the RFPC claims, are submitted to insurance carriers for defense and indemnity or to non-affiliated companies that retain the liabilities for the asbestos-containing products at issue. We cannot, however, assure that all these claims will be fully covered by insurance or that the indemnitors or insurers will remain financially viable. Our ultimate legal and financial liability with respect to these claims, as is the case with other pending litigation, cannot be estimated. It is management’s belief that the potential range of loss for asbestos-related bodily injury cases is not reasonably determinable at present due to a variety of factors, including: (1) the asbestos case settlement history of the Company’s wholly owned subsidiary, RFPC; (2) the unpredictable nature of personal injury litigation in general; and (3) the uncertainty of asbestos litigation in particular. Despite this uncertainty, and although the results of the Company’s operations and cash flows for any given period could be adversely affected by asbestos-related lawsuits, Management believes that the final resolution of the Company’s asbestos-related cases will not be material to the Company’s overall financial position, results of operations and cash flows. In general, this belief is based upon: (1) Wabtec’s and RFPC’s history of settlements and dismissals of asbestos-related cases to date; (2) the inability of many plaintiffs to establish any exposure or causal relationship to RFPC’s product; and (3) the inability of many plaintiffs to demonstrate any identifiable injury or compensable loss. More specifically, as to RFPC, management’s belief that any losses due to asbestos-related cases would not be material is also based on the fact that RFPC owns insurance which provides coverage for asbestos-related bodily injury claims. To date, RFPC’s insurers have provided RFPC with defense and indemnity in these actions. The overall number of new claims being filed against RFPC has dropped significantly in recent years; however, these new claims, and all previously filed claims, may take a significant period of time to resolve. As to Wabtec and its divisions, Management’s belief that asbestos-related cases will not have a material impact is also based on its position that it has no legal liability for asbestos-related bodily injury claims, and that the former owners of Wabtec’s assets retained asbestos liabilities for the products at issue. To date, Wabtec has been able to successfully defend itself on this basis, including two arbitration decisions and a judicial opinion, all of which confirmed Wabtec’s position that it did not assume any asbestos liabilities from the former owners of certain Wabtec assets. Although Wabtec has incurred defense and administrative costs in connection with asbestos bodily injury actions, these costs have not been material, and the Company has no information that would suggest these costs would become material in the foreseeable future. On April 21, 2016, Siemens Industry, Inc. filed a lawsuit against the Company in federal district court in Delaware alleging that the Company has infringed seven patents owned by Siemens related to Positive Train Control (PTC) technology. On November 2, 2016, Siemens amended its complaint to add six additional patents they also claim are infringed by the Company’s PTC Products or End of Train (EOT) Products (Siemen Patent Case). The Company has filed Answers, and asserted counterclaims, in response to Siemens’ complaints. Additionally, after filings by the Company, the US Patent & Trademark Office’s Patent Trail and Appeal Board (PTAB) has granted Inter-Parties Review (IPR) proceedings on ten (10) of the patents asserted by Siemens to contest their validity. Following pre-trial rulings that greatly reduced Siemens’ alleged damages, a jury trial was held in federal district court in Delaware in January 2019 on eight patents, two of which were still subject to an IPR decision on validity from the PTAB. At the conclusion of the trial, the jury awarded Siemens damages of $5.6 million related to PTC patents and $1.1 million related to EOT patents; as of February 25, 2019, a final verdict has not yet been entered by the Court. Since the jury’s verdict was issued, one of the PTC patents found to be infringed was held to be invalid by the PTAB, and a ruling on another of the PTC patents is still pending. Once a verdict is entered, the parties will file post-trial motions which could also potentially affect the verdict, and potential appeals could follow. Wabtec’s initial counterclaims in the Siemens Patent Case alleging that Siemens has violated three (3) of Wabtec’s patents were severed from the Siemens Patent case and were re-filed by Wabtec in a separate case now pending in the federal district court in Delaware (Wabtec Patent Case); a trial date of April 13, 2020 has been set in this case. On July 19, 2018, Siemens amended its pleadings in the Wabtec Patent Case to add new counterclaims alleging violations of federal antitrust and state trade practices laws related to Wabtec’s PTC sales. On January 29, 2019, Wabtec’s motion to sever the antitrust claims was granted; it is expected that Siemens will re-file the antitrust claims as a separate action (Siemens Antitrust Case). Xorail, Inc., a wholly owned subsidiary of the Company (“Xorail”), has received notices from Denver Transit Constructors (“DTC”) alleging breach of contract related to the operating of constant warning wireless crossings, and late delivery of the Train Management & Dispatch System (“TMDS”) for the Denver Eagle P3 Project, which is owned by the Denver Regional Transit District ("RTD"). No damages have been asserted for the alleged late delivery of the TMDS, and no formal claim has been filed. Xorail is in the final stages of successfully implementing a recovery plan concerning the TMDS issues. With regard to the wireless crossing issue, as of September 8, 2017, DTC alleged that total damages were $36.8 million through July 31, 2017 and are continuing to accumulate. The majority of the damages stems from a delay in approval of the wireless crossing system by the Federal Railway Administration ("FRA") and the Public Utility Commission ("PUC"), resulting in the use of flaggers at all of the crossings pending approval of the wireless crossing system and certification of the crossings. DTC has alleged that the delay is due to Xorail's failure to achieve constant warning times for the crossings in accordance with the approval requirements imposed by the FRA and PUC. Xorail has denied DTC's assertions, stating that its system satisfied the contractual requirements. Xorail has worked with DTC to modify its system an implement the FRA's and PUC's previously undefined approval requirements; the FRA and PUC have both approved modified wireless crossing system, and as of August 2018, DTC completed the process of certifying the crossings and eliminating the use of flaggers. On September 21, 2018, DTC filed a complaint against RTD in Colorado state court for breach of contract related to non-payments and the costs for the flaggers, asserting a change-in-law arising from the FRA/PUC’s new certification requirements. The complaint generally supports Xorail’s position and does not name or implicate Xorail. DTC has not updated its notices against Xorail nor has any formal claim been filed against Xorail by DTC. On April 3, 2018, the United States Department of Justice entered into a proposed consent decree resolving allegations that the Company and Knorr-Bremse AG had maintained unlawful agreements not to compete for each other’s employees. The allegations also related to Faiveley Transport before it was acquired by the Company in November 2016. The proposed consent decree is pending review and approval by the U.S. District Court for the District of Columbia. No monetary fines or penalties have been imposed on the Company. The Company elected to settle this matter with the Department of Justice to avoid the cost and distraction of litigation. Putative class action lawsuits were filed in several different federal district courts naming the Company and Knorr as defendants in connection with the allegations contained in the proposed consent decree. The lawsuits seek unspecified damages on behalf of employees of the Company (including Faiveley Transport) and Knorr allegedly caused by the defendants’ actions. A federal Multi-District Litigation (MDL) Panel decided to consolidate the cases in the Western District of Pennsylvania, and on October 12, 2018, a consolidated class action complaint was filed in the Western District of PA with five named plaintiffs, three of whom were Company employees. The litigation is in its very early stages and the Company does not believe that it has diminished competition for talent in the marketplace and intends to contest these claims vigorously. The Company has filed a motion to dismiss, which is pending From time to time the Company is involved in litigation relating to claims arising out of its operations in the ordinary course of business. As of the date hereof, the Company is involved in no litigation that the Company believes will have a material adverse effect on its financial condition, results of operations or liquidity.

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION Wabtec has two reportable segments—the Freight Segment and the Transit Segment. The key factors used to identify these reportable segments are the organization and alignment of the Company’s internal operations, the nature of the products and services, and customer type. The business segments are: Freight Segment primarily manufactures and services components for new and existing freight cars and locomotives, builds new switcher locomotives, rebuilds freight locomotives, supplies railway electronics, positive train control equipment, signal design and engineering services, and provides related heat exchange and cooling systems. Customers include large, publicly traded railroads, leasing companies, manufacturers of original equipment such as locomotives and freight cars, and utilities. Transit Segment primarily manufactures and services components for new and existing passenger transit vehicles, typically regional trains, high speed trains, subway cars, light-rail vehicles and buses, builds new commuter locomotives, refurbishes subway cars, provides heating, ventilation, and air conditioning equipment, and doors for buses and subways. Customers include public transit authorities and municipalities, leasing companies, and manufacturers of subway cars and buses around the world. The Company evaluates its business segments’ operating results based on income from operations. Intersegment sales are accounted for at prices that are generally established by reference to similar transactions with unaffiliated customers. Corporate activities include general corporate expenses, elimination of intersegment transactions, interest income and expense and other unallocated charges. Since certain administrative and other operating expenses and other items have not been allocated to business segments, the results in the following tables are not necessarily a measure computed in accordance with generally accepted accounting principles and may not be comparable to other companies. Segment financial information for 2018 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,564,297 $ 2,799,250 $ — $ 4,363,547 Intersegment sales/(elimination) 54,228 17,583 (71,811 ) — Total sales $ 1,618,525 $ 2,816,833 $ (71,811 ) $ 4,363,547 Income (loss) from operations $ 304,832 $ 227,939 $ (59,334 ) $ 473,437 Interest expense and other, net — — (105,855 ) (105,855 ) Income (loss) from operations before income taxes $ 304,832 $ 227,939 $ (165,189 ) $ 367,582 Depreciation and amortization $ 39,979 $ 64,287 $ 5,031 $ 109,297 Capital expenditures 26,568 59,603 7,134 93,305 Segment assets 3,774,689 9,087,026 (4,212,481 ) 8,649,234 Segment financial information for 2017 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,396,588 $ 2,485,168 $ — $ 3,881,756 Intersegment sales/(elimination) 37,630 21,548 (59,178 ) $ — Total sales $ 1,434,218 $ 2,506,716 $ (59,178 ) $ 3,881,756 Income (loss) from operations $ 264,276 $ 188,219 $ (31,416 ) $ 421,079 Interest expense and other, net — — (69,016 ) (69,016 ) Income (loss) from operations before income taxes $ 264,276 $ 188,219 $ (100,432 ) $ 352,063 Depreciation and amortization $ 43,721 $ 57,441 $ 2,086 $ 103,248 Capital expenditures 33,921 50,762 4,783 89,466 Segment assets 3,504,289 7,562,122 (4,486,431 ) 6,579,980 Segment financial information for 2016 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,543,098 $ 1,388,090 $ — $ 2,931,188 Intersegment sales/(elimination) 39,519 9,393 (48,912 ) — Total sales $ 1,582,617 $ 1,397,483 $ (48,912 ) $ 2,931,188 Income (loss) from operations $ 343,578 $ 170,569 $ (57,540 ) $ 456,607 Interest expense and other, net — — (43,770 ) (43,770 ) Income (loss) from operations before income taxes $ 343,578 $ 170,569 $ (101,310 ) $ 412,837 Depreciation and amortization $ 36,519 $ 31,545 $ 1,731 $ 69,795 Capital expenditures 22,726 20,987 6,503 50,216 Segment assets 2,949,668 6,720,302 (3,088,952 ) 6,581,018 The following geographic area data as of and for the years ended December 31, 2018 , 2017 and 2016 , respectively, includes net sales based on product shipment destination and long-lived assets, which consist of plant, property and equipment, net of depreciation, resident in their respective countries: Net Sales Long-Lived Assets In thousands 2018 2017 2016 2018 2017 2016 United States $ 1,460,278 $ 1,323,781 $ 1,362,255 $ 204,279 $ 211,608 $ 205,895 United Kingdom 395,767 356,493 322,563 54,848 57,668 54,215 Germany 314,703 208,817 98,364 75,498 71,709 57,902 Canada 278,979 279,013 206,258 5,271 5,822 5,156 France 247,804 237,454 66,287 56,651 57,849 33,636 Mexico 200,642 160,029 183,583 9,184 9,117 8,766 Italy 189,839 142,037 45,771 29,806 30,329 27,253 India 178,491 137,837 24,161 12,782 12,519 1,271 Australia 173,539 136,127 82,099 9,587 10,483 8,039 China 170,297 178,137 106,357 33,438 36,388 42,672 Brazil 67,572 69,378 51,493 13,490 13,184 13,227 Other international 685,636 652,653 381,997 58,903 57,296 60,344 Total $ 4,363,547 $ 3,881,756 $ 2,931,188 $ 563,737 $ 573,972 $ 518,376 Export sales from the Company’s United States operations were $512.5 million , $448.0 million and $470.5 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Sales by product are as follows: In thousands 2018 2017 2016 Specialty Products & Electronics $ 1,631,966 $ 1,350,727 $ 1,374,580 Brake Products 885,464 749,959 588,081 Remanufacturing, Overhaul & Build 537,122 522,275 559,284 Transit Products 1,111,549 1,112,340 276,124 Other 197,446 146,455 133,119 Total sales $ 4,363,547 $ 3,881,756 $ 2,931,188

GUARANTOR SUBSIDIARIES FINANCIA

GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION	GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION The obligations under the Company's 2016 Notes, 2013 Notes and Revolving Credit Facility and Term Loan are fully and unconditionally guaranteed by all U.S. subsidiaries as guarantors. Each guarantor is 100% owned by the parent company. In accordance with positions established by the Securities and Exchange Commission, the following shows separate financial information with respect to the parent, the guarantor subsidiaries and the non-guarantor subsidiaries. The principal elimination entries eliminate investment in subsidiaries and certain intercompany balances and transactions. Balance Sheet for December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Cash, cash equivalents, and restricted cash $ 1,782,682 $ (119 ) $ 559,791 $ — $ 2,342,354 Receivables, net 106,815 61,513 978,450 — 1,146,778 Inventories 149,622 69,116 626,148 — 844,886 Current assets - other 11,884 690 103,075 — 115,649 Total current assets 2,051,003 131,200 2,267,464 — 4,449,667 Property, plant and equipment 51,551 24,755 487,431 — 563,737 Goodwill 25,275 283,241 2,088,028 — 2,396,544 Investment in subsidiaries 6,707,979 4,022,107 — (10,730,086 ) — Other intangibles, net 29,254 78,547 1,022,079 — 1,129,880 Other long term assets 8,775 149 100,482 — 109,406 Total assets $ 8,873,837 $ 4,539,999 $ 5,965,484 $ (10,730,086 ) $ 8,649,234 Current liabilities $ 264,630 $ 91,004 $ 1,291,056 $ — $ 1,646,690 Inter-company 1,947,504 (1,436,222 ) (511,282 ) — — Long-term debt 3,779,627 — 13,147 — 3,792,774 Long-term liabilities - other 16,945 48,714 275,036 — 340,695 Total liabilities 6,008,706 (1,296,504 ) 1,067,957 — 5,780,159 Shareholders' equity 2,865,131 5,836,503 4,893,583 (10,730,086 ) 2,865,131 Non-controlling interest — — 3,944 — 3,944 Total shareholders' equity $ 2,865,131 $ 5,836,503 $ 4,897,527 $ (10,730,086 ) $ 2,869,075 Total Liabilities and Shareholders' Equity $ 8,873,837 $ 4,539,999 $ 5,965,484 $ (10,730,086 ) $ 8,649,234 Balance Sheet for December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Cash and cash equivalents $ 933 $ 625 $ 231,843 $ — $ 233,401 Receivables, net 77,046 59,166 1,030,575 — 1,166,787 Inventories 120,937 46,626 575,071 — 742,634 Current assets - other 1,142 563 120,586 — 122,291 Total current assets 200,058 106,980 1,958,075 — 2,265,113 Property, plant and equipment 52,532 26,492 494,948 — 573,972 Goodwill 25,274 283,242 2,151,587 — 2,460,103 Investment in subsidiaries 6,517,205 2,440,665 — (8,957,870 ) — Other intangibles, net 30,575 81,037 1,092,820 — 1,204,432 Other long term assets 17,414 (23,892 ) 82,838 — 76,360 Total assets $ 6,843,058 $ 2,914,524 $ 5,780,268 $ (8,957,870 ) $ 6,579,980 Current liabilities $ 196,827 $ 77,284 $ 1,299,219 $ — $ 1,573,330 Inter-company 2,121,546 (1,307,410 ) (814,136 ) — — Long-term debt 1,661,771 14 161,518 — 1,823,303 Long-term liabilities - other 54,046 20,594 280,175 — 354,815 Total liabilities 4,034,190 (1,209,518 ) 926,776 — 3,751,448 Shareholders' equity 2,808,868 4,124,042 4,833,828 (8,957,870 ) 2,808,868 Non-controlling interest — — 19,664 — 19,664 Total shareholders' equity $ 2,808,868 $ 4,124,042 $ 4,853,492 $ (8,957,870 ) $ 2,828,532 Total Liabilities and Shareholders' Equity $ 6,843,058 $ 2,914,524 $ 5,780,268 $ (8,957,870 ) $ 6,579,980 Income Statement for the Year Ended December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 671,035 $ 483,058 $ 3,442,229 $ (232,775 ) $ 4,363,547 Cost of sales (495,090 ) (304,286 ) (2,462,536 ) 132,250 (3,129,662 ) Gross profit (loss) 175,945 178,772 979,693 (100,525 ) 1,233,885 Total operating expenses (172,978 ) (57,274 ) (530,196 ) — (760,448 ) Income (loss) from operations 2,967 121,498 449,497 (100,525 ) 473,437 Interest (expense) income, net (110,801 ) 12,794 (14,228 ) — (112,235 ) Other income (expense), net 13,452 20 (7,092 ) — 6,380 Equity earnings (loss) 396,944 369,376 — (766,320 ) — Pretax income (loss) 302,562 503,688 428,177 (866,845 ) 367,582 Income tax expense (7,618 ) (3,299 ) (64,962 ) — (75,879 ) Net income (loss) 294,944 500,389 363,215 (866,845 ) 291,703 Less: Net income attributable to noncontrolling interest — — 3,241 — 3,241 Net income (loss) attributable to Wabtec shareholders $ 294,944 $ 500,389 $ 366,456 $ (866,845 ) $ 294,944 Comprehensive income (loss) attributable to Wabtec shareholders $ 295,774 $ 500,389 $ 154,035 $ (866,845 ) $ 83,353 Income Statement for the Year Ended December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 577,397 $ 398,220 $ 3,035,464 $ (129,325 ) $ 3,881,756 Cost of sales (440,911 ) (255,792 ) (2,218,460 ) 98,720 (2,816,443 ) Gross profit (loss) 136,486 142,428 817,004 (30,605 ) 1,065,313 Total operating expenses (114,199 ) (50,902 ) (479,133 ) — (644,234 ) Income (loss) from operations 22,287 91,526 337,871 (30,605 ) 421,079 Interest (expense) income, net (76,823 ) 10,916 (11,977 ) — (77,884 ) Other income (expense), net 10,020 274 (1,426 ) — 8,868 Equity earnings (loss) 416,068 317,614 — (733,682 ) — Pretax income (loss) 371,552 420,330 324,468 (764,287 ) 352,063 Income tax (expense) income (109,294 ) 18,762 759 — (89,773 ) Net income (loss) 262,258 439,092 325,227 (764,287 ) 262,290 Less: Net income attributable to noncontrolling interest — — (29 ) — (29 ) Net income (loss) attributable to Wabtec shareholders $ 262,258 $ 439,092 $ 325,198 $ (764,287 ) $ 262,261 Comprehensive income (loss) attributable to Wabtec shareholders $ 263,907 $ 439,092 $ 658,162 $ (764,287 ) $ 596,874 Income Statement for the Year Ended December 31, 2016: In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 641,809 $ 435,864 $ 1,995,465 $ (141,950 ) $ 2,931,188 Cost of sales (473,700 ) (280,973 ) (1,350,401 ) 98,125 (2,006,949 ) Gross (loss) profit 168,109 154,891 645,064 (43,825 ) 924,239 Total operating expenses (142,817 ) (50,361 ) (274,454 ) — (467,632 ) Income (loss) from operations 25,292 104,530 370,610 (43,825 ) 456,607 Interest (expense) income, net (38,843 ) 9,294 (20,749 ) — (50,298 ) Other income (expense), net 25,254 (1,689 ) (17,037 ) — 6,528 Equity earnings (loss) 322,650 292,184 — (614,834 ) — Pretax income (loss) 334,353 404,319 332,824 (658,659 ) 412,837 Income tax expense (29,466 ) (52,308 ) (17,659 ) — (99,433 ) Net income (loss) 304,887 352,011 315,165 (658,659 ) 313,404 Less: Net income attributable to noncontrolling interest — — (8,517 ) — (8,517 ) Net income (loss) attributable to Wabtec shareholders $ 304,887 $ 352,011 $ 306,648 $ (658,659 ) $ 304,887 Comprehensive income (loss) attributable to Wabtec shareholders $ 305,180 $ 352,011 $ 203,469 $ (658,659 ) $ 202,001 Condensed Statement of Cash Flows for the year ended December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (87,122 ) $ 130,125 $ 372,193 $ (100,525 ) $ 314,671 Net cash used in investing activities (16,808 ) (2,024 ) (128,455 ) — (147,287 ) Net cash provided by (used in) financing activities 1,885,679 (128,845 ) 120,752 100,525 1,978,111 Effect of changes in currency exchange rates — — (36,542 ) — (36,542 ) Increase (decrease) in cash 1,781,749 (744 ) 327,948 — 2,108,953 Cash and cash equivalents, beginning of year 933 625 231,843 — 233,401 Cash, cash equivalents, and restricted cash, end of year $ 1,782,682 $ (119 ) $ 559,791 $ — $ 2,342,354 Condensed Statement of Cash Flows for the year ended December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (49,231 ) $ 130,298 $ 138,349 $ (30,605 ) $ 188,811 Net cash used in investing activities (11,156 ) (3,357 ) (1,018,961 ) — (1,033,474 ) Net cash provided by (used in) financing activities 58,798 (127,542 ) (59,292 ) 30,605 (97,431 ) Effect of changes in currency exchange rates — — 32,263 — 32,263 (Decrease) increase in cash (1,589 ) (601 ) (907,641 ) — (909,831 ) Cash, cash equivalents, and restricted cash, beginning of year 2,522 1,226 1,139,484 — 1,143,232 Cash and cash equivalents, end of year $ 933 $ 625 $ 231,843 $ — $ 233,401 Condensed Statement of Cash Flows for the year ended December 31, 2016: In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (44,611 ) $ 142,839 $ 396,127 $ (43,825 ) $ 450,530 Net cash used in (provided by) investing activities (829,783 ) (2,653 ) 599,470 — (232,966 ) Net cash provided by (used in) financing activities 876,916 (147,586 ) (250,184 ) 43,825 522,971 Effect of changes in currency exchange rates — — (26,436 ) — (26,436 ) Increase (decrease) in cash 2,522 (7,400 ) 718,977 — 714,099 Cash, cash equivalents, and restricted cash, beginning of year — 8,626 420,507 — 429,133 Cash, cash equivalents, and restricted cash, end of year $ 2,522 $ 1,226 $ 1,139,484 $ — $ 1,143,232

OTHER INCOME, NET

OTHER INCOME, NET	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
OTHER INCOME, NET	OTHER INCOME, NET The components of other income, net are as follows: For the year ended December 31, In thousands 2018 2017 2016 Foreign currency loss $ (5,745 ) $ (6,618 ) $ (4,001 ) Equity income 1,931 2,579 409 Expected return on pension assets/amortization 9,047 9,834 9,491 Other miscellaneous (expense) income 1,147 3,073 629 Total other income, net $ 6,380 $ 8,868 $ 6,528

SELECTED QUARTERLY FINANCIAL DA

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)	SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) First Second Third Fourth In thousands, except per share data Quarter Quarter Quarter Quarter (1) 2018 Net sales $ 1,056,177 $ 1,111,680 $ 1,077,814 $ 1,117,876 Gross profit 310,881 323,967 302,012 297,025 Income from operations 131,279 123,523 125,179 93,456 Net income attributable to Wabtec shareholders 88,366 84,416 87,739 34,423 Basic earnings from operations per common share $ 0.92 $ 0.88 $ 0.91 $ 0.36 Diluted earnings from operations per common share $ 0.92 $ 0.87 $ 0.91 $ 0.36 2017 Net sales $ 916,034 $ 932,253 $ 957,931 $ 1,075,538 Gross profit 269,707 273,963 253,203 268,440 Income from operations 114,512 113,356 101,666 91,545 Net income attributable to Wabtec shareholders 73,889 72,025 67,399 48,948 Basic earnings from operations per common share $ 0.77 $ 0.75 $ 0.70 $ 0.51 Diluted earnings from operations per common share $ 0.77 $ 0.75 $ 0.70 $ 0.51 (1) Results from the fourth quarter of 2017 include project adjustments related to prior periods which decreased income from operations by approximately $14.8 million . The effect of these project adjustments was not material. The Company operates on a four-four-five week accounting quarter, and the quarters end on or about March 31, June 30 and September 30. The fiscal year ends on December 31.

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]
Valuation And Qualifying Accounts	SCHEDULE II WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION VALUATION AND QUALIFYING ACCOUNTS For each of the three years ended December 31 In thousands Balance at Charged/ Charged/ (credited) to Deductions Balance 2018 Allowance for doubtful accounts $ 12,342 $ 9,458 $ (360 ) $ 4,513 $ 16,927 Valuation allowance-taxes 25,683 27,410 — 11,314 41,779 2017 Allowance for doubtful accounts $ 7,340 $ 2,632 $ 4,979 $ 2,609 $ 12,342 Valuation allowance-taxes 21,418 4,265 — — 25,683 2016 Allowance for doubtful accounts $ 5,614 $ 3,635 $ — $ 1,909 $ 7,340 Valuation allowance-taxes 12,623 3,405 5,390 — 21,418 (1) Reserves of acquired/(sold) companies; valuation allowances for state and foreign deferred tax assets; impact of fluctuations in foreign currency exchange rates. (2) Actual disbursements and/or charges.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation	The consolidated financial statements include the accounts of the Company and all subsidiaries that it controls. For consolidated subsidiaries in which the Company's ownership is less than 100%, the outside shareholders' interests are shown as noncontrolling interests. These statements have been prepared in accordance with U.S. generally accepted accounting principles. Sales between subsidiaries are billed at prices consistent with sales to third parties and are eliminated in consolidation.
Cash Equivalents	Cash equivalents are highly liquid investments purchased with an original maturity of three months or less.
Allowance for Doubtful Accounts	The allowance for doubtful accounts receivable reflects our best estimate of probable losses inherent in our receivable portfolio determined on the basis of historical experience, specific allowances for known troubled accounts and other currently available evidence.
Inventories	Inventories are stated at the lower of cost or market. Cost is determined under the first-in, first-out (FIFO) method. Inventory costs include material, labor and overhead.
Property, Plant and Equipment	Property, plant and equipment additions are stated at cost. Expenditures for renewals and improvements are capitalized. Expenditures for ordinary maintenance and repairs are expensed as incurred. The Company computes book depreciation principally on the straight-line method. Accelerated depreciation methods are utilized for income tax purposes.
Leasing Arrangements	The Company conducts a portion of its operations from leased facilities and finances certain equipment purchases through lease agreements. In those cases in which the lease term approximates the useful life of the leased asset or the lease meets certain other prerequisites, the leasing arrangement is classified as a capital lease. The remaining arrangements are treated as operating leases.
Goodwill and Intangible Assets	Goodwill and other intangible assets with indefinite lives are not amortized. Other intangibles (with definite lives) are amortized on a straight-line basis over their estimated economic lives. Amortizable intangible assets are reviewed for impairment when indicators of impairment are present. The Company tests goodwill and indefinite-lived intangible assets for impairment at the reporting unit level and at least annually. The Company performs its annual impairment test during the fourth quarter after the annual forecasting process is completed, and also tests for impairment whenever events or changes in circumstances indicate that the carrying value may not be recoverable. Periodically, Management of the Company assesses whether or not an indicator of impairment is present that would necessitate an impairment analysis be performed. For 2018, the Company opted to proceed directly to the quantitative impairment test for all reporting units with goodwill. In the first step of the quantitative assessment, our assets and liabilities, including existing goodwill and other intangible assets, are assigned to the identified reporting units to determine the carrying value of the reporting units. The income approach and the market approach are weighted at 50% and 50%, respectively, in arriving at fair value. The discounted cash flow model requires several assumptions including future sales growth, EBIT (earnings before interest and taxes) margins and capital expenditures for the reporting units. The discounted cash flow model also requires the use of a discount rate and a terminal revenue growth rate (the revenue growth rate for the period beyond the years forecasted by the reporting units), as well as projections of future operating margins. The market approach requires several assumptions including EBITDA (earnings before interest, taxes, depreciation and amortization) multiples for comparable companies that operate in the same markets as the Company’s reporting units. The estimated fair value of all reporting units was in excess of its respective carrying value, which resulted in a conclusion that no impairment existed. Additionally, the Company proceeded directly to the quantitative impairment test for some trade names with indefinite lives. The fair value of all trade names subject to the quantitative impairment test exceeded its respective carrying value, resulting in a conclusion that no impairment existed. For trade names not subject to the quantitative testing, the Company opted to perform a qualitative trade name impairment assessment and determined from the qualitative assessment that it was not more likely than not that the estimated fair values of the trade names were less than their carrying values; therefore, no further analysis was required. In assessing the qualitative factors to determine whether it is more likely than not that the fair value of a trade name is less than its carrying amount, we assess relevant events and circumstances that may impact the fair value and the carrying amount of the trade name. The identification of relevant events and circumstances and how these may impact a trade name’s fair value or carrying amount involve significant judgments and assumptions. The judgment and assumptions include the identification of macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, Wabtec specific events, share price trends and making the assessment on whether each relevant factor will impact the impairment test positively or negatively and the magnitude of any such impact.
Warranty Costs	Warranty costs are accrued based on Management’s estimates of repair or upgrade costs per unit and historical experience.
Income Taxes	Income taxes are accounted for under the liability method. Deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws. The provision for income taxes includes federal, state and foreign income taxes.
Stock-Based Compensation	The Company recognizes compensation expense for stock-based compensation based on the grant date fair value amortized ratably over the requisite service period following the date of grant.
Financial Derivatives and Hedging Activities	The Company uses forward contracts to mitigate its foreign currency exchange rate exposure. Foreign currency forward contracts are agreements with a counterparty to exchange two distinct currencies at a set exchange rate for delivery on a set date at some point in the future. There is no exchange of funds until the delivery date.
Foreign Currency Translation	Assets and liabilities of foreign subsidiaries, except for the Company’s Mexican operations whose functional currency is the U.S. Dollar, are translated at the rate of exchange in effect on the balance sheet date while income and expenses are translated at the average rates of exchange prevailing during the period. Foreign currency gains and losses resulting from transactions, and the translation of financial statements are recorded in the Company’s consolidated financial statements based upon the provisions of Accounting Standards Codification (“ASC”) 830, “Foreign Currency Matters.” The effects of currency exchange rate changes on intercompany transactions and balances of a long-term investment nature are accumulated and carried as a component of accumulated other comprehensive loss. The effects of currency exchange rate changes on intercompany transactions that are denominated in a currency other than an entity’s functional currency are charged or credited to earnings.
Noncontrolling Interests	In accordance with ASC 810, the Company has classified noncontrolling interests as equity on our condensed consolidated balance sheets as of December 31, 2018 and 2017 .
Revenue Recognition and Shipping and Handling Fees and Costs	On January 1, 2018, the Company adopted ASC 606 “Revenue from Contracts with Customers”. This new guidance provides a five-step analysis of transactions to determine when and how revenue is recognized and requires entities to recognize revenue at an amount that reflects the consideration to which the Company expects to be entitled in exchange for transferring goods or services to a customer. Approximately 75% of the Company’s revenues are derived from performance obligations that are satisfied at a point in time when control passes to the customer which is generally at the time of shipment in accordance with agreed upon delivery terms. The remaining revenues are earned over time. This approach is consistent with our revenue recognition approach in prior years. The Company also has long-term customer agreements involving the design and production of highly engineered products that require revenue to be recognized over time because these products have no alternative use without significant economic loss and the agreements contain an enforceable right to payment including a reasonable profit margin from the customer in the event of contract termination. Additionally, the Company has customer agreements involving the creation or enhancement of an asset that the customer controls which also require revenue to be recognized over time. This approach is consistent with our revenue recognition approach in prior years. Generally, the Company uses an input method for determining the amount of revenue, cost and gross margin to recognize over time for these customer agreements. The input methods used for these agreements include costs of material and labor, both of which give an accurate representation of the progress made toward complete satisfaction of a particular performance obligation. Contract revenues and cost estimates are reviewed and revised quarterly at a minimum and adjustments are reflected in the accounting period as such amounts are determined. Contract assets include unbilled amounts resulting from sales under long-term contracts where revenue is recognized over time and revenue exceeds the amount that can be billed to the customer based on the terms of the contract. Contract assets are classified as current assets under the caption “Unbilled Accounts Receivable” on the consolidated balance sheet. The Company has elected to use the practical expedient and not consider unbilled amounts anticipated to be paid within one year as significant financing components. Contract liabilities include customer deposits that are made prior to the incurrence of costs related to a newly agreed upon contract and advanced customer payments that are in excess of revenue recognized. These contract liabilities are classified as current liabilities under the caption “Customer Deposits” on the consolidated balance sheet. These contract liabilities are not considered a significant financing component because they are used to meet working capital demands that can be higher in the early stages of a contract and revenue associated with the contract liabilities is expected to be recognized within one year. Contract liabilities also include provisions for estimated losses from uncompleted contracts. Provisions for loss contracts were $71.2 million and $94.0 million at December 31, 2018 and 2017, respectively. These provisions for estimated losses are classified as current liabilities and included within the caption “Other accrued liabilities” on the consolidated balance sheet. Due to the nature of work required to be performed on the Company’s long-term projects, the estimation of total revenue and cost at completion is subject to many variables and requires significant judgment. Contract estimates related to long-term projects are based on various assumptions to project the outcome of future events that could span several years. These assumptions include cost of materials; labor availability and productivity; complexity of the work to be performed; and the performance of suppliers, customers and subcontractors that may be associated with the contract. We have a disciplined quarterly estimate-at-completion process where management reviews the progress of long term-projects. As part of this process, management reviews information including key contract matters, progress towards completion, identified risks and opportunities and any other information that could impact the Company’s estimates of revenue and costs. After completing this analysis, any quarterly adjustments to net sales, cost of goods sold, and the related impact to operating income are recognized as necessary in the period they become known. Generally, the Company’s revenue contains a single performance obligation for each distinct good. Pricing is defined in our contracts on a line item basis and includes an estimate of variable consideration when required by the terms of the individual customer contract. Types of variable consideration that the Company typically has include volume discounts, prompt payment discounts, liquidating damages, and performance bonuses. Sales returns and allowances are also estimated and recognized in the same period the related revenue is recognized, based upon the Company’s experience. Remaining performance obligations represent transaction price of firm customer orders subject to standard industry cancellation provisions and substantial scope-of-work adjustments. As of December 31, 2018 , the Company's remaining performance obligations were $4.5 billion . The Company expects to recognize revenue of approximately 55% of remaining performance obligations over the next 12 months, with the remainder recognized thereafter. Letters of Credit In the ordinary course of its business, the Company issues letters of credit related to commercial products. The outstanding amount, including the letters of credit issues under the credit facility, were $354.2 million and $364.6 million at December 31, 2018 and 2017 , respectively. Pre-Production Costs Certain pre-production costs relating to long-term production and supply contracts have been deferred and will be recognized over the life of the contracts. Deferred pre-production costs were $16.4 million and $20.2 million at December 31, 2018 and 2017 , respectively. All fees billed to the customer for shipping and handling are classified as a component of net revenues. All costs associated with shipping and handling are classified as a component of cost of sales.
Significant Customers and Concentrations of Credit Risk	The Company’s trade receivables are from rail and transit industry original equipment manufacturers, Class I railroads, railroad carriers and commercial companies that utilize rail cars in their operations, such as utility and chemical companies. No one customer accounted for more than 10% of the Company’s consolidated net sales in 2018 , 2017 or 2016 .
Research and Development	Research and development costs are charged to expense as incurred.
Earnings Per Share	Basic and diluted earnings per common share is computed in accordance with ASC 260 “Earnings Per Share.” Unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and included in the computation of earnings per share pursuant to the two-class method included in ASC 260-10-55 (See Note 13 “Earnings Per Share” included herein)
Reclassifications	Certain prior year amounts have been reclassified, where necessary, to conform to the current year presentation. Refer to Recently Adopted Accounting Pronouncements below.
Use of Estimates	The preparation of financial statements in conformity with generally accepted accounting principles in the United States requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual amounts could differ materially from the estimates. On an ongoing basis, Management reviews its estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.
Recently Issued and Adopted Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2018, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, "Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income". The amendments in this update address certain stranded income tax effects in accumulated other comprehensive income ("AOCI") resulting from the Tax Cuts and Jobs Act (the "Tax Act"). Current guidance requires the effect of a change in tax laws or rates on deferred tax balances to be reported in income from continuing operations in the accounting period that includes the period of enactment, even if the related income tax effects were originally charged or credited directly to AOCI. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded effects resulting from the Tax Act. The amount of the reclassification would include the effect of the change in the U.S. federal corporate income tax rate on the gross deferred tax amounts and related valuation allowances, if any, at the date of the enactment of the Tax Act related to items in AOCI. The updated guidance is effective for reporting periods beginning after December 15, 2018 and is to be applied retrospectively to each period in which the effect of the Tax Act related to items remaining in AOCI are recognized or at the beginning of the period of adoption. The Company has evaluated the potential impact of adopting this guidance and determined it will not have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". The amendments in this update eliminate the requirement to perform Step 2 of the goodwill impairment test. Instead, an entity should perform a goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value up to the carrying amount of the goodwill. This ASU is effective for public companies in the fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. The impact of adopting this guidance could result in a change in the overall conclusion as to whether or not a reporting unit's goodwill is impaired and the amount of an impairment charge recognized in the event a reporting units' carrying value exceeds its fair value. All of the Company's reporting units had fair values that were greater than the carrying value as of the Company's last quantitative goodwill impairment test, which was performed as of October 1, 2018. The Company is currently evaluating the potential impact of adopting this guidance on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 814)" which requires lessees to recognize a right of use asset and lease liability on the balance sheet for all leases with terms longer than 12 months. For leases with terms less than 12 months, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right of use asset and lease liability. The guidance requires enhanced disclosures regarding the amount, timing, and uncertainty of cash flows arising from leases that will be effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. This guidance becomes effective for the Company on January 1, 2019. The Company plans to elect the practical expedient which does not require the capitalization of leases with terms of 12 months or less. And the Company does not plan to elect the practical expedient which allows hindsight to be used to determine the term of a lease. The Company has completed the accumulation of its lease portfolio into a lease management system and has validated the information for accuracy and completeness. The Company has implemented the system which will be used as the primary source for the Company’s lease information and related accounting. Management expects to record a right-of-use asset and lease liability on the Consolidated Balance Sheet for several types of operating leases, including land and buildings, plant equipment, and vehicles. The amount of the respective asset and liability is estimated to be within a range of $165 million to $185 million . The FASB recently proposed a transition alternative, which would allow for the application of the guidance at beginning of the period in which it is adopted, rather than requiring the adjustment of prior comparative periods. The Company has adopted this transition alternative on the January 1, 2019 adoption date. Recently Adopted Accounting Pronouncements In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers.” This ASU supersedes most of the previous revenue recognition requirements in U.S. GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which the Company expects to be entitled in exchange for transferring goods or services to a customer. The new standard also requires significantly expanded disclosures regarding the qualitative and quantitative information of an entity’s nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. This ASU became effective for public companies during interim and annual reporting periods beginning after December 15, 2017. The Company adopted this accounting standard update using the modified retrospective method. The impact of adopting the new standard was not material to the consolidated statement of income or the consolidated balance sheet. In March 2017, the FASB issued ASU No. 2017-07 "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost". The amendments in this update require the service cost component of net benefit costs to be reported in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit costs are required to be presented in the income statement separately from the service cost component and outside income from operations. This update also allows the service cost component to be eligible for capitalization when applicable. In accordance with this update, the Company began recognizing the interest expense component of net periodic benefit cost in interest expense in the income statement and the expected return on plan assets, net amortization/deferrals, and curtailments in other income (expense), net in the income statement. This update has been adopted by the Company and applied retrospectively for presentation of the service cost component and other components of net benefit costs in accordance with the ASU. The impact of adoption resulted in increases of $0.6 million , $9.2 million and $9.8 million to selling, general, and administrative expense, interest expense, net and other income, net, respectively, in the income statement for the year ended December 31, 2017. The impact of adoption resulted in increases of $1.8 million , $7.7 million and $9.5 million to selling, general, and administrative expense, interest expense, net and other income, net, respectively, in the income statement for the year ended December 31, 2016. Also, the capitalization of the service cost component of net benefit cost will be adopted prospectively in accordance with the ASU. In November 2016, the FASB issued ASU No. 2016-18 "Statement of Cash Flows (Topic 230): Restricted Cash". The amendments in this update require a statement of cash flows to explain the change during the period in total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The requirements of this update have been adopted by the Company and applied retrospectively. As a result, restricted cash related to the acquisition of Faiveley Transport is included in the change in cash for the years ended December 31, 2017 and 2016.

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Summary of Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the final fair values of the assets acquired and liabilities assumed at the date of the acquisitions. Melett TTC ATP December 4, 2017 April 5, 2017 March 13, 2017 In thousands Current assets, net of cash acquired $ 34,491 $ 3,744 $ 11,666 Property, plant & equipment 5,917 5,413 5,354 Goodwill 26,653 14,095 29,034 Other intangible assets 28,590 12,300 25,000 Total assets acquired 95,651 35,552 71,054 Total liabilities assumed (23,758 ) (3,041 ) (5,800 ) Net assets acquired $ 71,893 $ 32,511 $ 65,254 For the AM General acquisition, the following table summarizes the final fair value of the assets acquired and liabilities assumed at the date of the acquisition. Annax AM General March 22, 2018 October 2, 2017 In thousands Current assets, net of cash acquired $ 34,036 $ 6,805 Property, plant & equipment 674 4,140 Goodwill 25,471 6,114 Other intangible assets 12,828 19,427 Total assets acquired 73,009 36,486 Total liabilities assumed (44,345 ) (26,070 ) Net assets acquired $ 28,664 $ 10,416 The following table summarizes the final fair values of the Faiveley Transport assets acquired and liabilities assumed. In thousands Assets acquired Cash and cash equivalents $ 178,318 Accounts receivable 439,631 Inventories 205,649 Other current assets 70,930 Property, plant, and equipment 148,746 Goodwill 1,262,350 Trade names 346,328 Customer Relationships 233,529 Patents 1,201 Other noncurrent assets 184,564 Total assets acquired 3,071,246 Liabilities assumed Current liabilities 819,493 Debt 409,899 Other noncurrent liabilities 335,039 Total liabilities assumed 1,564,431 Net assets acquired $ 1,506,815
Pro Forma Financial Information	The following unaudited pro forma financial information presents income statement results as if the acquisitions listed above had occurred January 1, 2017: For the year ended In thousands 2018 2017 Net sales $ 4,376,972 $ 3,994,515 Gross profit 1,235,821 1,099,878 Net income attributable to Wabtec shareholders 292,207 273,301 Diluted earnings per share As Reported $ 3.05 $ 2.72 Pro forma $ 3.06 $ 2.84

SUPPLEMENTAL CASH FLOW DISCLO_2

SUPPLEMENTAL CASH FLOW DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow Disclosures	Year Ended December 31, 2018 2017 2016 In thousands Interest paid during the year $ 81,756 $ 75,317 $ 30,211 Income taxes paid during the year, net of amount refunded $ 83,949 $ 89,379 $ 121,563 Business acquisitions: Fair value of assets acquired 91,758 452,209 3,118,420 Liabilities assumed 32,908 207,788 1,453,382 Non-controlling interest (acquired) assumed — (761,786 ) 760,343 Stock and cash paid 58,850 1,006,207 904,695 Less: Cash acquired 7,697 35,408 186,903 Stock used for acquisition — 25,500 534,679 Net cash paid $ 51,153 $ 945,299 $ 183,113

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	Dec. 31, 2018
Inventory Disclosure [Abstract]
Components of Inventory, Net of Reserves	The components of inventory, net of reserves, were: December 31, In thousands 2018 2017 Raw materials $ 465,873 $ 378,481 Work-in-progress 154,485 167,390 Finished goods 224,528 196,763 Total inventories $ 844,886 $ 742,634

PROPERTY, PLANT & EQUIPMENT (Ta

PROPERTY, PLANT & EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Major Classes of Depreciable Assets	The major classes of depreciable assets are as follows: December 31, In thousands 2018 2017 Machinery and equipment $ 749,782 $ 728,257 Buildings and improvements 248,111 259,561 Land and improvements 38,657 38,228 Property, plant and equipment 1,036,550 1,026,046 Less: accumulated depreciation (472,813 ) (452,074 ) Total $ 563,737 $ 573,972
Estimated Useful Lives of Property Plant and Equipment	The estimated useful lives of property, plant and equipment are as follows: Years Land improvements 10 to 20 Building and improvements 20 to 40 Machinery and equipment 3 to 15

INTANGIBLES (Tables)

INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Change in the Carrying Amount of Goodwill by Segment	The change in the carrying amount of goodwill by segment for the year ended December 31, 2018 is as follows: Freight Transit In thousands Segment Segment Total Balance at December 31, 2017 $ 718,958 $ 1,741,145 $ 2,460,103 Additions 6,478 16,790 23,268 Foreign currency impact (12,045 ) (74,782 ) (86,827 ) Balance at December 31, 2018 $ 713,391 $ 1,683,153 $ 2,396,544
Intangible Assets of the Company, Other Than Goodwill and Trademarks	Intangible assets of the Company, other than goodwill and trade names, consist of the following: December 31, In thousands 2018 2017 Patents, non-compete and other intangibles, net of accumulated amortization of $42,446 and $43,021 $ 15,328 $ 17,554 Customer relationships, net of accumulated amortization of $158,533 and $126,824 531,761 583,459 Total $ 547,089 $ 601,013
Estimated Amortization Expense Five Succeeding Years	Estimated amortization expense for the five succeeding years is as follows (in thousands): 2019 $ 38,289 2020 36,552 2021 35,595 2022 35,283 2023 34,945

CONTRACT ASSETS AND CONTRACT _2

CONTRACT ASSETS AND CONTRACT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability	The change in the carrying amount of contract assets and contract liabilities for the twelve months ended December 31, 2018 is as follows: In thousands Contract Assets Balance at beginning of year $ 366,168 Recognized in current year 426,829 Reclassified to accounts receivable (432,307 ) Foreign currency impact (15,105 ) Balance at December 31, 2018 $ 345,585 In thousands Contract Liabilities Balance at beginning of year $ 463,704 Recognized in current year 230,159 Amounts in beginning balance reclassified to revenue (199,735 ) Current year amounts reclassified to revenue (30,914 ) Foreign currency impact (18,409 ) Balance at December 31, 2018 $ 444,805

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following: December 31, In thousands 2018 2017 Floating Senior Notes, due 2021, net of unamortized debt $ 496,796 $ — 4.150% Senior Notes, due 2024, net of unamortized debt 742,957 — 4.70% Senior Notes, due 2028, net of unamortized debt 1,239,657 — 3.45% Senior Notes, due 2026, net of unamortized debt 748,282 747,655 4.375% Senior Notes, due 2023, net of unamortized 248,823 248,567 Revolving Credit Facility, net of unamortized 338,112 853,124 Other Borrowings 42,246 21,182 Total 3,856,873 1,870,528 Less - current portion 64,099 47,225 Long-term portion $ 3,792,774 $ 1,823,303
Principal Repayments of Debt and Capital Lease	Scheduled principal repayments of debt and capital lease balances as of December 31, 2018 are as follows: 2019 $ 64,099 2020 36,387 2021 764,980 2022 54 2023 248,873 Future years 2,742,480 Total $ 3,856,873

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Schedule of U.S. and International Pension Plans with Accumulated Benefit Obligations and with Projected Benefit Obligations in Excess of Plan Assets	U.S. International In thousands 2018 2017 2018 2017 Information for pension plans with accumulated benefit obligations in excess of Plan assets: Projected benefit obligation $ (39,476 ) $ (44,213 ) $ (251,010 ) $ (282,077 ) Accumulated benefit obligation (38,805 ) (43,340 ) (243,613 ) (274,557 ) Fair value of plan assets 31,973 37,432 172,333 200,218 Information for pension plans with projected benefit obligations in excess of plan assets: Projected benefit obligation $ (39,476 ) $ (44,213 ) $ (251,010 ) $ (283,106 ) Fair value of plan assets 31,973 37,432 172,333 201,115
Pension Plan Assets by Asset Category	Plan assets by asset category at December 31, 2018 and 2017 are as follows: U.S. International In thousands 2018 2017 2018 2017 Pension Plan Assets Equity security funds $ 13,162 $ 18,122 $ 95,058 $ 100,453 Debt security funds and other 17,528 18,304 140,894 178,730 Cash and cash equivalents 1,283 1,006 3,547 2,419 Fair value of plan assets $ 31,973 $ 37,432 $ 239,499 $ 281,602
Schedule of Pension Plan Assets Measured at Fair Value	The following tables summarize our pension plan assets measured at fair value on a recurring basis by fair value hierarchy level (See Note 20): December 31, 2018 In thousands NAV Level 1 Level 2 Level 3 Total US: Equity $ — $ 13,162 $ — $ — $ 13,162 Debt Securities and other — 4,523 13,005 — 17,528 Cash and cash equivalents — 1,283 — — 1,283 International: Equity $ 3,710 $ 34,848 $ 56,500 $ — $ 95,058 Debt Securities and other — — 125,587 — 125,587 Insurance Contracts — — 5,383 9,924 15,307 Cash and cash equivalents — 3,547 — — 3,547 Total $ 3,710 $ 57,363 $ 200,475 $ 9,924 $ 271,472 December 31, 2017 In thousands NAV Level 1 Level 2 Level 3 Total US: Equity $ — $ 18,122 $ — $ — $ 18,122 Debt Securities — 4,273 14,031 — 18,304 Cash and cash equivalents — 1,006 — — 1,006 International: Equity $ 4,586 $ 38,647 $ 95,641 $ — $ 138,874 Debt Securities — — 111,204 — 111,204 Insurance Contracts — — 15,893 13,123 29,016 Cash and cash equivalents — 2,507 — — 2,507 Total $ 4,586 $ 64,555 $ 236,769 $ 13,123 $ 319,033
Schedule of Reconciliation of Level 3 Assets	The following table presents a reconciliation of Level 3 assets: In thousands Total Balance at December 31, 2016 $ 12,996 Net purchases, issuances, and settlements 778 Actual return of plan assets 375 Opening balance sheet adjustment (1,308 ) Effect of currency rate changes 282 Balance at December 31, 2017 $ 13,123 Net purchases, issuances, and settlements (3,611 ) Actual return of plan assets 277 Transfers 658 Effect of currency rate changes (523 ) Balance at December 31, 2018 $ 9,924
Costs Recognized Under Defined Contribution Plans and Multiemployer Pension Plans	Costs recognized under these plans are summarized as follows: For the year ended In thousands 2018 2017 2016 Multi-employer pension and health & welfare plans $ 965 $ 1,522 $ 2,054 401(k) savings and other defined contribution plans 27,869 23,209 23,062 Total $ 28,834 $ 24,731 $ 25,116
Contributions in Multiemployer Pension Plans	The Company’s participation in multi-employer plans for the year ended December 31, 2018 is outlined in the table below. For plans that are not individually significant to the Company, the total amount of contributions is presented in the aggregate. Pension Protection FIP/ Contributions by Expiration RP Status Surcharge Collective Pension Fund EIN/PN (a) 2017 2016 Implemented (c) 2018 2017 2016 (d) Agreements Idaho Operating Engineers- EIN # 91-6075538 Green Green No $ 965 (1) $ 1,020 (1 ) $ 1,306 (1 ) No 8/6/2021 Employers Pension Trust Fund Plan# 001 Total Contributions $ 965 $ 1,020 $ 1,306 (1) The Company’s contribution represents more than 5% of the total contributions to the plan. (a) The “EIN / PN” column provides the Employer Identification Number and the three-digit plan number assigned to a plan by the Internal Revenue Service. (b) The most recent Pension Protection Act Zone Status available for 2018 and 2017 is for plan years that ended in 2017 and 2016, respectively. The zone status is based on information provided to the Company and other participating employers by each plan and is certified by the plan’s actuary. A plan in the “red” zone has been determined to be in “critical status”, based on criteria established under the Internal Revenue Code (“Code”), and is generally less than 65% funded. A plan in the “yellow” zone has been determined to be in “endangered status”, based on criteria established under the Code, and is generally less than 80% funded. A plan in the “green” zone has been determined to be neither in “critical status” nor in “endangered status” and is generally at least 80% funded. (c) The “FIP/RP Status Pending/Implemented” column indicates whether a Funding Improvement Plan, as required under the Code to be adopted by plans in the “yellow” zone, or a Rehabilitation Plan, as required under the Code to be adopted by plans in the “red” zone, is pending or has been implemented as of the end of the plan year that ended in 2018 . (d) The “Surcharge Imposed” column indicates whether the Company’s contribution rate for 2018 included an amount in addition the contribution rate specified in the applicable collective bargaining agreement, as imposed by a plan in “critical status”, in accordance with the requirements of the Code.
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Obligations and Funded Status	The following tables provide information regarding the Company’s defined benefit pension plans summarized by U.S. and international components. Obligations and Funded Status U.S. International In thousands 2018 2017 2018 2017 Change in projected benefit obligation Obligation at beginning of year $ (44,213 ) $ (45,512 ) $ (353,017 ) $ (319,551 ) Opening balance sheet adjustment — — — (5,321 ) Service cost (349 ) (344 ) (2,611 ) (2,740 ) Interest cost (1,332 ) (1,422 ) (7,047 ) (7,310 ) Employee contributions — — (448 ) (880 ) Plan settlements and amendments — — 15,191 4,153 Benefits paid 3,476 3,079 13,453 12,906 Acquisition — — (864 ) — Actuarial gain (loss) 2,942 (14 ) 6,740 (3,009 ) Effect of currency rate changes — — 19,337 (31,265 ) Obligation at end of year $ (39,476 ) $ (44,213 ) $ (309,266 ) $ (353,017 ) Change in plan assets Fair value of plan assets at beginning of year $ 37,432 $ 35,802 $ 281,602 $ 241,283 Opening balance sheet adjustment — — — 2,058 Actual return on plan assets (1,983 ) 4,223 (6,938 ) 19,102 Employer contributions — 486 10,821 13,479 Employee contributions — — 448 880 Benefits paid (3,476 ) (3,079 ) (13,453 ) (12,905 ) Settlements — — (16,601 ) (4,523 ) Effect of currency rate changes — — (16,380 ) 22,228 Fair value of plan assets at end of year $ 31,973 $ 37,432 $ 239,499 $ 281,602 Funded status Fair value of plan assets $ 31,973 $ 37,432 $ 239,499 $ 281,602 Benefit obligations (39,476 ) (44,213 ) (309,266 ) (353,017 ) Funded status $ (7,503 ) $ (6,781 ) $ (69,767 ) $ (71,415 ) Amounts recognized in the statement of financial position consist of: Noncurrent assets $ — $ — $ 8,910 $ 10,577 Current liabilities — — (2,062 ) (2,158 ) Noncurrent liabilities (7,503 ) (6,781 ) (76,615 ) (79,834 ) Net amount recognized $ (7,503 ) $ (6,781 ) $ (69,767 ) $ (71,415 ) Amounts recognized in accumulated other comprehensive income (loss) consist of: Prior service cost (3 ) (6 ) (1,419 ) (32 ) Net actuarial loss (20,268 ) (20,418 ) (58,748 ) (54,043 ) Net amount recognized $ (20,271 ) $ (20,424 ) $ (60,167 ) $ (54,075 )
Components of Net Periodic Benefit Costs	Components of Net Periodic Benefit Costs U.S. International In thousands 2018 2017 2016 2018 2017 2016 Service cost $ 349 $ 344 $ 337 $ 2,611 $ 2,740 $ 1,379 Interest cost 1,332 1,422 1,475 7,047 7,310 5,774 Expected return on plan assets (1,780 ) (1,731 ) (2,076 ) (13,458 ) (12,412 ) (9,971 ) Amortization of initial net obligation and prior service cost 3 3 3 22 27 61 Amortization of net loss 970 989 914 2,149 2,846 1,818 Settlement and curtailment losses recognized — — — 3,112 768 218 Net periodic benefit cost $ 874 $ 1,027 $ 653 $ 1,483 $ 1,279 $ (721 )
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income	Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income during 2018 are as follows: In thousands U.S. International Net gain (loss) arising during the year $ (820 ) $ (13,655 ) Effect of exchange rates — 3,690 Amortization, settlement, or curtailment recognition of net transition obligation — 3,112 Amortization or curtailment recognition of prior service cost 3 (1,388 ) Amortization or settlement recognition of net loss 970 2,149 Total recognized in other comprehensive gain $ 153 $ (6,092 ) Total recognized in net periodic benefit cost and other comprehensive gain $ (721 ) $ (7,575 )
Weighted Average Assumptions Used to Develop Actuarial Present Value of Projected Benefit Obligation	The weighted average assumptions in the following table represent the rates used to develop the actuarial present value of the projected benefit obligation for the year listed. U.S. International 2018 2017 2016 2018 2017 2016 Discount rate 4.30 % 3.56 % 3.95 % 2.53 % 2.40 % 2.51 % Expected return on plan assets 5.15 % 4.95 % 5.70 % 5.10 % 5.02 % 6.07 % Rate of compensation increase 3.00 % 3.00 % 3.00 % 2.61 % 2.54 % 2.54 %
Amounts Included in Other Comprehensive Loss That are Expected to be Recognized as Components of Periodic Benefit Costs	As of December 31, 2018 , the following table represents the amounts included in other comprehensive loss that are expected to be recognized as components of periodic benefit costs in 2019 . In thousands U.S. International Prior service cost 3 53 Net actuarial loss 826 2,512 $ 829 $ 2,565
Benefit Payments Expected to be Paid to Plan Participants	Benefit payments expected to be paid to plan participants are as follows: In thousands U.S. International Year ended December 31, 2019 $ 3,233 $ 11,556 2020 3,242 12,017 2021 3,100 12,489 2022 3,095 13,353 2023 3,077 13,583 2024 through 2028 13,623 75,457
Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Obligations and Funded Status	The following tables provide information regarding the Company’s post retirement benefit plans summarized by U.S. and international components. Obligations and Funded Status U.S. International In thousands 2018 2017 2018 2017 Change in projected benefit obligation Obligation at beginning of year $ (11,345 ) $ (11,876 ) $ (3,720 ) $ (3,425 ) Service cost (5 ) (5 ) (31 ) (28 ) Interest cost (326 ) (350 ) (100 ) (98 ) Benefits paid 786 970 201 199 Actuarial gain (loss) 1,072 (84 ) 646 (131 ) Effect of currency rate changes — — 335 (237 ) Obligation at end of year $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) Change in plan assets Fair value of plan assets at beginning of year $ — $ — $ — $ — Employer contributions 786 970 201 199 Benefits paid (786 ) (970 ) (201 ) (199 ) Fair value of plan assets at end of year $ — $ — $ — $ — Funded status Fair value of plan assets $ — $ — $ — $ — Benefit obligations (9,818 ) (11,345 ) (2,669 ) (3,720 ) Funded status $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) U.S. International In thousands 2018 2017 2018 2017 Amounts recognized in the statement of financial position consist of: Current liabilities $ (984 ) $ (1,046 ) $ (175 ) $ (208 ) Noncurrent liabilities (8,834 ) (10,299 ) (2,494 ) (3,512 ) Net amount recognized $ (9,818 ) $ (11,345 ) $ (2,669 ) $ (3,720 ) Amounts recognized in accumulated other comprehensive income (loss) consist of: Prior service credit 18,097 19,616 2 9 Net actuarial (loss) gain (16,593 ) (18,882 ) 748 154 Net amount recognized $ 1,504 $ 734 $ 750 $ 163
Components of Net Periodic Benefit Costs	Components of Net Periodic Benefit Cost U.S. International In thousands 2018 2017 2016 2018 2017 2016 Service cost $ 5 $ 5 $ 4 $ 31 $ 28 $ 29 Interest cost 326 350 389 100 98 99 Amortization of initial net obligation and prior service cost (1,519 ) (1,519 ) (1,709 ) (7 ) (7 ) (7 ) Amortization of net loss (gain) 1,216 1,225 1,287 (8 ) (23 ) (29 ) Net periodic benefit cost (credit) $ 28 $ 61 $ (29 ) $ 116 $ 96 $ 92
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income	Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income during 2018 are as follows: In thousands U.S. International Net loss arising during the year 1,072 646 Effect of exchange rates — (44 ) Amortization or curtailment recognition of prior service cost (1,519 ) (7 ) Amortization or settlement recognition of net loss (gain) 1,216 (8 ) Total recognized in other comprehensive income (loss) $ 769 $ 587 Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 741 $ 471
Weighted Average Assumptions Used to Develop Actuarial Present Value of Projected Benefit Obligation	The weighted average assumptions in the following table represent the rates used to develop the actuarial present value of the projected benefit obligation for the year listed and also the net periodic benefit cost for the following year. The discount rate is based on settling the pension obligation with high grade, high yield corporate bonds. U.S. International 2018 2017 2016 2018 2017 2016 Discount rate 4.17 % 3.43 % 3.76 % 3.49 % 3.21 % 3.46 %
Amounts Included in Other Comprehensive Loss That are Expected to be Recognized as Components of Periodic Benefit Costs	As of December 31, 2018 , the following table represents the amounts included in other comprehensive loss that are expected to be recognized as components of periodic benefit costs in 2019. In thousands U.S. International Prior service credit (1,519 ) (2 ) Net actuarial loss (gain) 1,116 (88 ) Total $ (403 ) $ (90 )
Benefit Payments Expected to be Paid to Plan Participants	Benefit payments expected to be paid to plan participants are as follows: In thousands U.S. International Year ended December 31, 2019 $ 983 $ 175 2020 949 171 2021 920 181 2022 879 184 2023 854 196 2024 through 2028 3,661 912

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Components of Income from Operations before Provision for Income Taxes	The components of the income from operations before provision for income taxes for the Company’s domestic and foreign operations for the years ended December 31 are provided below: For the year ended In thousands 2018 2017 2016 Domestic $ 145,096 $ 140,325 $ 276,218 Foreign 222,486 211,738 136,619 Income from operations before income taxes $ 367,582 $ 352,063 $ 412,837
Consolidated Provision for Income Taxes	The consolidated provision for income taxes included in the Statement of Income consisted of the following: For the year ended December 31, In thousands 2018 2017 2016 Current taxes Federal $ 6,940 $ 86,157 $ 72,317 State 5,771 3,644 9,953 Foreign 68,467 67,395 27,391 81,178 157,196 109,661 Deferred taxes Federal 4,689 (22,863 ) 11,013 State 1,263 (1,024 ) 1,953 Foreign (11,251 ) (43,536 ) (23,194 ) (5,299 ) (67,423 ) (10,228 ) Total provision $ 75,879 $ 89,773 $ 99,433
Reconciliation of Income Tax Rate	A reconciliation of the United States federal statutory income tax rate to the effective income tax rate on operations for the years ended December 31 is provided below: For the year ended December 31, In thousands 2018 2017 2016 U.S. federal statutory rate 21.0 % 35.0 % 35.0 % State taxes 1.6 0.4 2.1 Foreign 0.7 (8.3 ) (4.3 ) Research and development credit (1.1 ) (0.8 ) (1.0 ) Manufacturing deduction — (1.1 ) (1.8 ) France tax rate change — (6.5 ) (6.5 ) U.S. tax rate change (0.6 ) (7.9 ) — U.S. tax reform (benefit) provision (1.4 ) 15.6 — Transaction costs related to acquisitions — — 1.5 Other, net 0.4 (0.9 ) (0.9 ) Effective rate 20.6 % 25.5 % 24.1 %
Components of Deferred Tax Assets and Liabilities	Components of deferred tax assets and liabilities were as follows: December 31, In thousands 2018 2017 Deferred income tax assets: Accrued expenses and reserves $ 13,795 $ 10,961 Warranty reserve 25,944 20,211 Deferred compensation/employee benefits 8,994 18,353 Pension and postretirement obligations 19,532 21,637 Inventory 16,769 19,620 Net operating loss carry forwards 85,051 65,671 Other 20,048 14,974 Gross deferred income tax assets 190,133 171,427 Valuation allowance 41,779 25,683 Total deferred income tax assets 148,354 145,744 Deferred income tax liabilities: Property, plant & equipment 35,440 37,015 Intangibles 287,419 288,141 Total deferred income tax liabilities 322,859 325,156 Net deferred income tax liability $ (174,505 ) $ (179,412 )
Liability for Income Taxes Associated with Uncertain Tax Positions	In thousands 2018 2017 2016 Gross liability for unrecognized tax benefits at beginning of year $ 6,910 $ 8,423 $ 10,557 Gross increases - unrecognized tax benefits in prior periods 5,389 2,466 6 Gross decreases - audit settlement during year — (3,979 ) — Gross decreases - expiration of audit statute of limitations (2,756 ) — (2,140 ) Gross liability for unrecognized tax benefits at end of year $ 9,543 $ 6,910 $ 8,423

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Computation of Earnings Per Share	The computation of earnings per share from operations is as follows: For the Year Ended December 31, In thousands, except per share data 2018 2017 2016 Numerator Numerator for basic and diluted earnings per common share - net income attributable to Wabtec shareholders $ 294,944 $ 262,261 $ 304,887 Less: dividends declared - common shares and non-vested restricted stock (46,277 ) (42,218 ) (32,430 ) Undistributed earnings 248,667 220,043 272,457 Percentage allocated to common shareholders (1) 99.7 % 99.7 % 99.7 % 247,921 219,383 271,640 Add: dividends declared - common shares 46,173 42,092 32,333 Numerator for basic and diluted earnings per common share $ 294,094 $ 261,475 $ 303,973 Denominator Denominator for basic earnings per common share - weighted average shares 95,994 95,453 90,359 Effect of dilutive securities: Assumed conversion of dilutive stock-based compensation plans 470 672 782 Denominator for diluted earnings per common share - adjusted weighted average shares and assumed conversion 96,464 96,125 91,141 Net income per common share attributable to Wabtec shareholders Basic $ 3.06 $ 2.74 $ 3.37 Diluted $ 3.05 $ 2.72 $ 3.34 (1) Basic weighted-average common shares outstanding 95,994 95,453 90,359 Basic weighted-average common shares outstanding and non-vested restricted stock expected to vest 96,281 95,740 90,627 Percentage allocated to common shareholders 99.7 % 99.7 % 99.7 %

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Option Activity	The following table summarizes the Company’s stock option activity and related information for the 2011 Plan, the 2000 Plan and Directors Plan for the years ended December 31: Options Weighted Weighted Average Aggregate Outstanding at December 31, 2015 1,097,323 $ 32.70 4.8 $ 42,154 Granted 94,115 61.39 2,035 Exercised (83,790 ) 25.58 (4,813 ) Canceled (8,825 ) 71.47 (102 ) Outstanding at December 31, 2016 1,098,823 $ 35.39 4.3 $ 52,332 Granted 65,522 86.91 — Exercised (166,838 ) 21.37 (10,020 ) Canceled (13,995 ) 76.89 (64 ) Outstanding at December 31, 2017 983,512 $ 32.52 4.0 $ 40,137 Granted 82,580 77.54 — Exercised (582,303 ) 28.29 (24,433 ) Canceled (17,112 ) 69.76 (8 ) Outstanding at December 31, 2018 466,677 $ 61.04 5.7 $ 4,298 Exercisable at December 31, 2018 283,169 $ 50.60 4.6 $ 5,564
Stock Options Outstanding	Options outstanding at December 31, 2018 were as follows: Number of Weighted Weighted Number of Weighted Average Range of exercise prices Outstanding Outstanding Life Exercisable Exercisable Under $35.00 71,765 $ 27.84 2.0 71,765 $ 27.84 35.00 - 50.00 107,034 41.36 3.6 107,034 41.36 50.00 - 65.00 65,199 61.33 7.1 24,615 61.33 65.00 - 80.00 98,981 72.21 7.6 38,187 72.85 Over 80.00 123,698 88.25 7.5 41,568 86.90 466,677 $ 61.04 283,169 $ 50.60
Schedule of Share-Based Fair Value of Each Option Grant Weighted-Average Assumptions	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions: For the year ended December 31, 2018 2017 2016 Dividend yield 0.31 % 0.23 % 0.26 % Risk-free interest rate 2.8 % 2.2 % 1.5 % Stock price volatility 23.9 % 23.4 % 26.9 % Expected life (years) 5.0 5.0 5.0 Weighted average fair value of options granted during the year $ 20.59 $ 20.69 $ 14.96
Restricted Stock Activity and Incentive Stock Awards Activity	The following table summarizes the restricted stock activity and related information for the 2011 Plan, the 2000 Plan, and Directors Plan, and incentive stock units activity and related information for the 2011 Plan and the 2000 Plan with related information for the years ended December 31: Restricted Incentive Weighted Outstanding at December 31, 2015 356,885 541,638 $ 65.89 Granted 212,600 167,850 66.03 Vested (159,975 ) (236,591 ) 51.80 Adjustment for incentive stock awards expected to vest — (38,164 ) 74.42 Canceled (13,215 ) (9,983 ) 71.84 Outstanding at December 31, 2016 396,295 424,750 $ 72.18 Granted 153,516 157,025 86.66 Vested (137,088 ) (153,271 ) 70.34 Adjustment for incentive stock awards expected to vest — (87,592 ) 73.69 Canceled (13,723 ) (13,579 ) 76.61 Outstanding at December 31, 2017 399,000 327,333 $ 78.76 Granted 224,060 175,100 73.76 Vested (148,644 ) (93,312 ) 81.55 Adjustment for incentive stock awards expected to vest — 32,996 74.62 Canceled (29,327 ) (26,875 ) 78.60 Outstanding at December 31, 2018 445,089 415,242 $ 75.51

OTHER COMPREHENSIVE LOSS (Table

OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss were: December 31, In thousands 2018 2017 Foreign currency translation gain (loss) $ (202,204 ) $ 5,063 Unrealized gain (loss) on interest rate swap contracts, net of tax of $16 and $1,338 (53 ) 4,015 Unrealized loss on pension and post-retirement benefit plans, net of tax of $23,049 and $19,532 (54,326 ) (54,070 ) Total accumulated other comprehensive loss $ (256,583 ) $ (44,992 )
Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax	The changes in accumulated other comprehensive loss by component, net of tax, for the year-ended December 31, 2017 are as follows: Foreign Derivative Pension and In thousands translation contracts benefits plans Total Balance at December 31, 2016 $ (321,033 ) $ (2,957 ) $ (55,615 ) $ (379,605 ) Other comprehensive income before reclassifications 326,096 6,712 (1,017 ) 331,791 Amounts reclassified from accumulated other comprehensive income — 260 2,562 2,822 Net current period other comprehensive income 326,096 6,972 1,545 334,613 Balance at December 31, 2017 $ 5,063 $ 4,015 $ (54,070 ) $ (44,992 ) The changes in accumulated other comprehensive loss by component, net of tax, for the year-ended December 31, 2018 are as follows: Foreign Derivative Pension and In thousands translation contracts benefits plans Total Balance at December 31, 2017 $ 5,063 $ 4,015 $ (54,070 ) $ (44,992 ) Other comprehensive income before reclassifications (207,267 ) (7,803 ) (2,319 ) (217,389 ) Amounts reclassified from accumulated other comprehensive income — 3,735 2,063 5,798 Net current period other comprehensive income (207,267 ) (4,068 ) (256 ) (211,591 ) Balance at December 31, 2018 $ (202,204 ) $ (53 ) $ (54,326 ) $ (256,583 )
Reclassifications Out of Accumulated Other Comprehensive Loss	Reclassifications out of accumulated other comprehensive loss for the year-ended December 31, 2017 are as follows: Amount reclassified from Affected line item in the In thousands comprehensive income Statements of Income Amortization of defined pension and post retirement items Amortization of initial net obligation and prior service cost $ (1,496 ) Other income, net Amortization of net loss (gain) 5,037 Other income, net 3,541 Other income, net (979 ) Income tax expense $ 2,562 Net income Derivative contracts Realized loss on derivative contracts 400 Interest expense, net (140 ) Income tax expense $ 260 Net income Reclassifications out of accumulated other comprehensive loss for the year-ended December 31, 2018 are as follows: Amount reclassified from Affected line item in the In thousands comprehensive income Statements of Income Amortization of defined pension and post retirement items Amortization of initial net obligation and prior service cost $ (1,501 ) Other income, net Amortization of net loss (gain) 4,327 Other income, net 2,826 Other income, net (763 ) Income tax expense $ 2,063 Net income Derivative contracts Realized loss on derivative contracts 4,915 Interest expense, net (1,180 ) Income tax expense $ 3,735 Net income

OPERATING LEASES (Tables)

OPERATING LEASES (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Future Minimum Rental Payments Under Operating Leases	Future minimum rental payments under operating leases with remaining non-cancelable terms in excess of one year are as follows: Real In thousands Estate Equipment Total 2019 $ 31,428 $ 5,001 $ 36,429 2020 28,132 2,636 30,768 2021 22,897 1,752 24,649 2022 18,020 825 18,845 2023 16,267 391 16,658 2024 and after 63,061 — 63,061

WARRANTIES (Tables)

WARRANTIES (Tables)	12 Months Ended
	Dec. 31, 2018
Product Warranties Disclosures [Abstract]
Changes in Product Warranty Reserve	The following table reconciles the changes in the Company’s product warranty reserve as follows: In thousands 2018 2017 Balance at beginning of year $ 153,063 $ 138,992 Warranty expense 57,988 50,385 Acquisitions 3,135 806 Warranty claim payments (54,111 ) (48,548 ) Foreign currency impact (6,373 ) 11,428 Balance at end of year $ 153,702 $ 153,063

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Notional Amounts and Fair Value	The following table summarizes the gross notional amounts and fair values of the designated and non-designated hedges discussed in the above sections as of December 31, 2018 : In millions Designated Non-Designated Total Gross notional amount $ 863.0 $ 834.0 $ 1,697.0 Fair Value: Other current assets $ — $ 1.3 $ 1.3 Other current liabilities (2.3 ) — (2.3 ) Total $ (2.3 ) $ 1.3 $ (1.0 ) The following table summarizes the gross notional amounts and fair values of the designated and non-designated hedged discussed in the above sections as of December 31, 2017 : In millions Designated Non-Designated Total Gross notional amount $ 805.1 $ 379.7 $ 1,184.8 Fair Value: Other current assets 3.5 2.1 $ 5.6 Other current liabilities — — $ — Total $ 3.5 $ 2.1 $ 5.6

FAIR VALUE MEASUREMENT AND FA_2

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Liabilities Carried at Fair Value Measured on Recurring Basis	The following table provides the liabilities carried at fair value measured on a recurring basis as of December 31, 2017 , which are included in other current liabilities on the Consolidated Balance sheet: Fair Value Measurements at December 31, 2017 Using Total Carrying Quoted Prices in Significant Other Significant In thousands 2017 (Level 1) (Level 2) (Level 3) Interest rate swap agreements 1,163 — 1,163 — Total $ 1,163 $ — $ 1,163 $ —
Estimated Fair Values and Related Carrying Values of Financial Instruments	The estimated fair values and related carrying values of the Company’s financial instruments are as follows: December 31, 2018 December 31, 2017 Carry Fair Carry Fair In thousands Value Value Value Value Interest rate swap agreements $ — $ — $ 1,163 $ 1,163 4.375% Senior Notes, due 2023 248,823 254,218 248,567 262,033 3.45% Senior Notes, due 2026 748,282 675,075 747,655 741,113 Floating Rate Notes, due 2021 496,796 497,425 — — 4.15% Senior Notes, due 2024 742,957 727,350 — — 4.7% Senior Notes, due 2028 1,239,657 1,179,625 — —

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment Financial Information	Segment financial information for 2018 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,564,297 $ 2,799,250 $ — $ 4,363,547 Intersegment sales/(elimination) 54,228 17,583 (71,811 ) — Total sales $ 1,618,525 $ 2,816,833 $ (71,811 ) $ 4,363,547 Income (loss) from operations $ 304,832 $ 227,939 $ (59,334 ) $ 473,437 Interest expense and other, net — — (105,855 ) (105,855 ) Income (loss) from operations before income taxes $ 304,832 $ 227,939 $ (165,189 ) $ 367,582 Depreciation and amortization $ 39,979 $ 64,287 $ 5,031 $ 109,297 Capital expenditures 26,568 59,603 7,134 93,305 Segment assets 3,774,689 9,087,026 (4,212,481 ) 8,649,234 Segment financial information for 2017 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,396,588 $ 2,485,168 $ — $ 3,881,756 Intersegment sales/(elimination) 37,630 21,548 (59,178 ) $ — Total sales $ 1,434,218 $ 2,506,716 $ (59,178 ) $ 3,881,756 Income (loss) from operations $ 264,276 $ 188,219 $ (31,416 ) $ 421,079 Interest expense and other, net — — (69,016 ) (69,016 ) Income (loss) from operations before income taxes $ 264,276 $ 188,219 $ (100,432 ) $ 352,063 Depreciation and amortization $ 43,721 $ 57,441 $ 2,086 $ 103,248 Capital expenditures 33,921 50,762 4,783 89,466 Segment assets 3,504,289 7,562,122 (4,486,431 ) 6,579,980 Segment financial information for 2016 is as follows: Corporate Freight Transit Activities and In thousands Segment Segment Elimination Total Sales to external customers $ 1,543,098 $ 1,388,090 $ — $ 2,931,188 Intersegment sales/(elimination) 39,519 9,393 (48,912 ) — Total sales $ 1,582,617 $ 1,397,483 $ (48,912 ) $ 2,931,188 Income (loss) from operations $ 343,578 $ 170,569 $ (57,540 ) $ 456,607 Interest expense and other, net — — (43,770 ) (43,770 ) Income (loss) from operations before income taxes $ 343,578 $ 170,569 $ (101,310 ) $ 412,837 Depreciation and amortization $ 36,519 $ 31,545 $ 1,731 $ 69,795 Capital expenditures 22,726 20,987 6,503 50,216 Segment assets 2,949,668 6,720,302 (3,088,952 ) 6,581,018
Geographic Area Data	The following geographic area data as of and for the years ended December 31, 2018 , 2017 and 2016 , respectively, includes net sales based on product shipment destination and long-lived assets, which consist of plant, property and equipment, net of depreciation, resident in their respective countries: Net Sales Long-Lived Assets In thousands 2018 2017 2016 2018 2017 2016 United States $ 1,460,278 $ 1,323,781 $ 1,362,255 $ 204,279 $ 211,608 $ 205,895 United Kingdom 395,767 356,493 322,563 54,848 57,668 54,215 Germany 314,703 208,817 98,364 75,498 71,709 57,902 Canada 278,979 279,013 206,258 5,271 5,822 5,156 France 247,804 237,454 66,287 56,651 57,849 33,636 Mexico 200,642 160,029 183,583 9,184 9,117 8,766 Italy 189,839 142,037 45,771 29,806 30,329 27,253 India 178,491 137,837 24,161 12,782 12,519 1,271 Australia 173,539 136,127 82,099 9,587 10,483 8,039 China 170,297 178,137 106,357 33,438 36,388 42,672 Brazil 67,572 69,378 51,493 13,490 13,184 13,227 Other international 685,636 652,653 381,997 58,903 57,296 60,344 Total $ 4,363,547 $ 3,881,756 $ 2,931,188 $ 563,737 $ 573,972 $ 518,376
Sales by Product	Sales by product are as follows: In thousands 2018 2017 2016 Specialty Products & Electronics $ 1,631,966 $ 1,350,727 $ 1,374,580 Brake Products 885,464 749,959 588,081 Remanufacturing, Overhaul & Build 537,122 522,275 559,284 Transit Products 1,111,549 1,112,340 276,124 Other 197,446 146,455 133,119 Total sales $ 4,363,547 $ 3,881,756 $ 2,931,188

GUARANTOR SUBSIDIARIES FINANC_2

GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheet	Balance Sheet for December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Cash, cash equivalents, and restricted cash $ 1,782,682 $ (119 ) $ 559,791 $ — $ 2,342,354 Receivables, net 106,815 61,513 978,450 — 1,146,778 Inventories 149,622 69,116 626,148 — 844,886 Current assets - other 11,884 690 103,075 — 115,649 Total current assets 2,051,003 131,200 2,267,464 — 4,449,667 Property, plant and equipment 51,551 24,755 487,431 — 563,737 Goodwill 25,275 283,241 2,088,028 — 2,396,544 Investment in subsidiaries 6,707,979 4,022,107 — (10,730,086 ) — Other intangibles, net 29,254 78,547 1,022,079 — 1,129,880 Other long term assets 8,775 149 100,482 — 109,406 Total assets $ 8,873,837 $ 4,539,999 $ 5,965,484 $ (10,730,086 ) $ 8,649,234 Current liabilities $ 264,630 $ 91,004 $ 1,291,056 $ — $ 1,646,690 Inter-company 1,947,504 (1,436,222 ) (511,282 ) — — Long-term debt 3,779,627 — 13,147 — 3,792,774 Long-term liabilities - other 16,945 48,714 275,036 — 340,695 Total liabilities 6,008,706 (1,296,504 ) 1,067,957 — 5,780,159 Shareholders' equity 2,865,131 5,836,503 4,893,583 (10,730,086 ) 2,865,131 Non-controlling interest — — 3,944 — 3,944 Total shareholders' equity $ 2,865,131 $ 5,836,503 $ 4,897,527 $ (10,730,086 ) $ 2,869,075 Total Liabilities and Shareholders' Equity $ 8,873,837 $ 4,539,999 $ 5,965,484 $ (10,730,086 ) $ 8,649,234 Balance Sheet for December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Cash and cash equivalents $ 933 $ 625 $ 231,843 $ — $ 233,401 Receivables, net 77,046 59,166 1,030,575 — 1,166,787 Inventories 120,937 46,626 575,071 — 742,634 Current assets - other 1,142 563 120,586 — 122,291 Total current assets 200,058 106,980 1,958,075 — 2,265,113 Property, plant and equipment 52,532 26,492 494,948 — 573,972 Goodwill 25,274 283,242 2,151,587 — 2,460,103 Investment in subsidiaries 6,517,205 2,440,665 — (8,957,870 ) — Other intangibles, net 30,575 81,037 1,092,820 — 1,204,432 Other long term assets 17,414 (23,892 ) 82,838 — 76,360 Total assets $ 6,843,058 $ 2,914,524 $ 5,780,268 $ (8,957,870 ) $ 6,579,980 Current liabilities $ 196,827 $ 77,284 $ 1,299,219 $ — $ 1,573,330 Inter-company 2,121,546 (1,307,410 ) (814,136 ) — — Long-term debt 1,661,771 14 161,518 — 1,823,303 Long-term liabilities - other 54,046 20,594 280,175 — 354,815 Total liabilities 4,034,190 (1,209,518 ) 926,776 — 3,751,448 Shareholders' equity 2,808,868 4,124,042 4,833,828 (8,957,870 ) 2,808,868 Non-controlling interest — — 19,664 — 19,664 Total shareholders' equity $ 2,808,868 $ 4,124,042 $ 4,853,492 $ (8,957,870 ) $ 2,828,532 Total Liabilities and Shareholders' Equity $ 6,843,058 $ 2,914,524 $ 5,780,268 $ (8,957,870 ) $ 6,579,980
Condensed Income Statement	Income Statement for the Year Ended December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 671,035 $ 483,058 $ 3,442,229 $ (232,775 ) $ 4,363,547 Cost of sales (495,090 ) (304,286 ) (2,462,536 ) 132,250 (3,129,662 ) Gross profit (loss) 175,945 178,772 979,693 (100,525 ) 1,233,885 Total operating expenses (172,978 ) (57,274 ) (530,196 ) — (760,448 ) Income (loss) from operations 2,967 121,498 449,497 (100,525 ) 473,437 Interest (expense) income, net (110,801 ) 12,794 (14,228 ) — (112,235 ) Other income (expense), net 13,452 20 (7,092 ) — 6,380 Equity earnings (loss) 396,944 369,376 — (766,320 ) — Pretax income (loss) 302,562 503,688 428,177 (866,845 ) 367,582 Income tax expense (7,618 ) (3,299 ) (64,962 ) — (75,879 ) Net income (loss) 294,944 500,389 363,215 (866,845 ) 291,703 Less: Net income attributable to noncontrolling interest — — 3,241 — 3,241 Net income (loss) attributable to Wabtec shareholders $ 294,944 $ 500,389 $ 366,456 $ (866,845 ) $ 294,944 Comprehensive income (loss) attributable to Wabtec shareholders $ 295,774 $ 500,389 $ 154,035 $ (866,845 ) $ 83,353 Income Statement for the Year Ended December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 577,397 $ 398,220 $ 3,035,464 $ (129,325 ) $ 3,881,756 Cost of sales (440,911 ) (255,792 ) (2,218,460 ) 98,720 (2,816,443 ) Gross profit (loss) 136,486 142,428 817,004 (30,605 ) 1,065,313 Total operating expenses (114,199 ) (50,902 ) (479,133 ) — (644,234 ) Income (loss) from operations 22,287 91,526 337,871 (30,605 ) 421,079 Interest (expense) income, net (76,823 ) 10,916 (11,977 ) — (77,884 ) Other income (expense), net 10,020 274 (1,426 ) — 8,868 Equity earnings (loss) 416,068 317,614 — (733,682 ) — Pretax income (loss) 371,552 420,330 324,468 (764,287 ) 352,063 Income tax (expense) income (109,294 ) 18,762 759 — (89,773 ) Net income (loss) 262,258 439,092 325,227 (764,287 ) 262,290 Less: Net income attributable to noncontrolling interest — — (29 ) — (29 ) Net income (loss) attributable to Wabtec shareholders $ 262,258 $ 439,092 $ 325,198 $ (764,287 ) $ 262,261 Comprehensive income (loss) attributable to Wabtec shareholders $ 263,907 $ 439,092 $ 658,162 $ (764,287 ) $ 596,874 Income Statement for the Year Ended December 31, 2016: In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net Sales $ 641,809 $ 435,864 $ 1,995,465 $ (141,950 ) $ 2,931,188 Cost of sales (473,700 ) (280,973 ) (1,350,401 ) 98,125 (2,006,949 ) Gross (loss) profit 168,109 154,891 645,064 (43,825 ) 924,239 Total operating expenses (142,817 ) (50,361 ) (274,454 ) — (467,632 ) Income (loss) from operations 25,292 104,530 370,610 (43,825 ) 456,607 Interest (expense) income, net (38,843 ) 9,294 (20,749 ) — (50,298 ) Other income (expense), net 25,254 (1,689 ) (17,037 ) — 6,528 Equity earnings (loss) 322,650 292,184 — (614,834 ) — Pretax income (loss) 334,353 404,319 332,824 (658,659 ) 412,837 Income tax expense (29,466 ) (52,308 ) (17,659 ) — (99,433 ) Net income (loss) 304,887 352,011 315,165 (658,659 ) 313,404 Less: Net income attributable to noncontrolling interest — — (8,517 ) — (8,517 ) Net income (loss) attributable to Wabtec shareholders $ 304,887 $ 352,011 $ 306,648 $ (658,659 ) $ 304,887 Comprehensive income (loss) attributable to Wabtec shareholders $ 305,180 $ 352,011 $ 203,469 $ (658,659 ) $ 202,001
Condensed Cash Flow Statement	Condensed Statement of Cash Flows for the year ended December 31, 2018 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (87,122 ) $ 130,125 $ 372,193 $ (100,525 ) $ 314,671 Net cash used in investing activities (16,808 ) (2,024 ) (128,455 ) — (147,287 ) Net cash provided by (used in) financing activities 1,885,679 (128,845 ) 120,752 100,525 1,978,111 Effect of changes in currency exchange rates — — (36,542 ) — (36,542 ) Increase (decrease) in cash 1,781,749 (744 ) 327,948 — 2,108,953 Cash and cash equivalents, beginning of year 933 625 231,843 — 233,401 Cash, cash equivalents, and restricted cash, end of year $ 1,782,682 $ (119 ) $ 559,791 $ — $ 2,342,354 Condensed Statement of Cash Flows for the year ended December 31, 2017 : In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (49,231 ) $ 130,298 $ 138,349 $ (30,605 ) $ 188,811 Net cash used in investing activities (11,156 ) (3,357 ) (1,018,961 ) — (1,033,474 ) Net cash provided by (used in) financing activities 58,798 (127,542 ) (59,292 ) 30,605 (97,431 ) Effect of changes in currency exchange rates — — 32,263 — 32,263 (Decrease) increase in cash (1,589 ) (601 ) (907,641 ) — (909,831 ) Cash, cash equivalents, and restricted cash, beginning of year 2,522 1,226 1,139,484 — 1,143,232 Cash and cash equivalents, end of year $ 933 $ 625 $ 231,843 $ — $ 233,401 Condensed Statement of Cash Flows for the year ended December 31, 2016: In thousands Parent Guarantors Non-Guarantors Elimination Consolidated Net cash (used in) provided by operating activities $ (44,611 ) $ 142,839 $ 396,127 $ (43,825 ) $ 450,530 Net cash used in (provided by) investing activities (829,783 ) (2,653 ) 599,470 — (232,966 ) Net cash provided by (used in) financing activities 876,916 (147,586 ) (250,184 ) 43,825 522,971 Effect of changes in currency exchange rates — — (26,436 ) — (26,436 ) Increase (decrease) in cash 2,522 (7,400 ) 718,977 — 714,099 Cash, cash equivalents, and restricted cash, beginning of year — 8,626 420,507 — 429,133 Cash, cash equivalents, and restricted cash, end of year $ 2,522 $ 1,226 $ 1,139,484 $ — $ 1,143,232

OTHER INCOME, NET (Tables)

OTHER INCOME, NET (Tables)	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Components of Other (Expense) Income	The components of other income, net are as follows: For the year ended December 31, In thousands 2018 2017 2016 Foreign currency loss $ (5,745 ) $ (6,618 ) $ (4,001 ) Equity income 1,931 2,579 409 Expected return on pension assets/amortization 9,047 9,834 9,491 Other miscellaneous (expense) income 1,147 3,073 629 Total other income, net $ 6,380 $ 8,868 $ 6,528

SELECTED QUARTERLY FINANCIAL _2

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data	First Second Third Fourth In thousands, except per share data Quarter Quarter Quarter Quarter (1) 2018 Net sales $ 1,056,177 $ 1,111,680 $ 1,077,814 $ 1,117,876 Gross profit 310,881 323,967 302,012 297,025 Income from operations 131,279 123,523 125,179 93,456 Net income attributable to Wabtec shareholders 88,366 84,416 87,739 34,423 Basic earnings from operations per common share $ 0.92 $ 0.88 $ 0.91 $ 0.36 Diluted earnings from operations per common share $ 0.92 $ 0.87 $ 0.91 $ 0.36 2017 Net sales $ 916,034 $ 932,253 $ 957,931 $ 1,075,538 Gross profit 269,707 273,963 253,203 268,440 Income from operations 114,512 113,356 101,666 91,545 Net income attributable to Wabtec shareholders 73,889 72,025 67,399 48,948 Basic earnings from operations per common share $ 0.77 $ 0.75 $ 0.70 $ 0.51 Diluted earnings from operations per common share $ 0.77 $ 0.75 $ 0.70 $ 0.51 (1) Results from the fourth quarter of 2017 include project adjustments related to prior periods which decreased income from operations by approximately $14.8 million . The effect of these project adjustments was not material.

BUSINESS (Detail)

BUSINESS (Detail)	12 Months Ended
	Dec. 31, 2018country
Product Information [Line Items]
Number of countries company operates	30
Number of countries where product found (more than)	100
Sales Revenue, Net | Geographic Concentration Risk | Non-US
Product Information [Line Items]
Revenues from customers outside the U.S. (as a percent)	67.00%

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019	Jun. 05, 2014
Summary Of Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 16,900,000	$ 12,300,000
Product warranty expense	58,000,000	50,400,000	$ 28,900,000
Accrued product warranty	153,702,000	153,063,000	138,992,000
Foreign exchange transaction losses recognized in other (expense) income, net	5,745,000	6,618,000	4,001,000
Net income attributable to noncontrolling interest	(3,241,000)	29,000	8,517,000
Provisions for loss contracts	71,200,000	94,000,000
Remaining performance obligation	4,500,000,000
Letters of credit outstanding	354,200,000	364,600,000
Deferred pre-production costs	16,400,000	20,200,000
Research and development costs	87,450,000	95,166,000	71,375,000
Selling, general and administrative expense	633,244,000	512,552,000	373,559,000
Interest expense, net	(112,235,000)	(77,884,000)	(50,298,000)
Other income, net	6,380,000	8,868,000	6,528,000
Interest rate swap agreements
Summary Of Significant Accounting Policies [Line Items]
Interest rate swap agreements, notional amount	$ 150,000,000				$ 150,000,000
Accounting Standards Update 2017-07 | Restatement Adjustment
Summary Of Significant Accounting Policies [Line Items]
Selling, general and administrative expense		600,000	1,800,000
Interest expense, net		9,200,000	7,700,000
Other income, net		$ 9,800,000	$ 9,500,000
Transferred at Point in Time
Summary Of Significant Accounting Policies [Line Items]
Revenue derived from performance obligations	75.00%
Minimum | Scenario Forecast | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Estimated lease liability				$ 165,000,000
Estimated right-of-use asset				165,000,000
Maximum | Scenario Forecast | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Estimated lease liability				185,000,000
Estimated right-of-use asset				$ 185,000,000

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Performance Obligation (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01	Dec. 31, 2018
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation, term	1 year
Revenue expected to be recognized over next 12 months	55.00%

ACQUISITIONS - Narrative (Detai

ACQUISITIONS - Narrative (Detail) $ in Thousands	Mar. 21, 2017USD ($)	Mar. 06, 2017USD ($)	Feb. 03, 2017USD ($)	Nov. 30, 2016USD ($)employeecountry	Mar. 31, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 22, 2018USD ($)	Dec. 04, 2017USD ($)	Oct. 02, 2017USD ($)	Apr. 05, 2017USD ($)	Mar. 13, 2017USD ($)	Nov. 30, 2016€ / shares
Business Acquisition [Line Items]
Stock and cash paid						$ 58,850	$ 1,006,207	$ 904,695
Stock used for acquisition						0	25,500	534,679
Non-controlling interests associated with Faiveley Transport Acquisition								$ 760,599
Goodwill						2,396,544	2,460,103
Faiveley
Business Acquisition [Line Items]
Annual sales of Faiveley				$ 1,200,000
Number of employees (more than) | employee				5,700
Number of countries Faiveley operates in | country				24
Purchase price per share (in euros per share) | € / shares														€ 100
Percentage of share capital acquired (as a percent)				51.00%
Percentage of voting interests in Faiveley (as a percent)		22.00%	27.00%	49.00%
Number of common shares issued for conversion of one acquiree common share				1.1538
Percentage of additional share capital outstanding (as a percent)		21.00%	27.00%
Stock and cash paid	$ 17,500	$ 303,200	$ 411,800
Stock used for acquisition		$ 300	$ 25,200
Percentage of share capital owned (as a percent)	100.00%	99.00%	78.00%
Total purchase price (as a percent)	100.00%	98.00%	76.00%	100.00%
Business combination, consideration transferred				$ 1,507,000
Deposit in escrow							$ 744,700
Non-controlling interests associated with Faiveley Transport Acquisition					$ 8,900
Adjustment for changes in receivables				439,631
Adjustment for changes in liabilities				819,493
Goodwill				$ 1,262,350
Faiveley | Minimum
Business Acquisition [Line Items]
Percentage of business acquisition consideration payable in cash (as a percent)				25.00%
Faiveley | Maximum
Business Acquisition [Line Items]
Percentage of business acquisition consideration payable in cash (as a percent)				45.00%
Melett
Business Acquisition [Line Items]
Goodwill										$ 26,653
Purchase price										71,893
Goodwill expected to be deductible for taxes										0
Acquired intangible assets										$ 28,590
TTC
Business Acquisition [Line Items]
Goodwill												$ 14,095
Purchase price												32,511
Goodwill expected to be deductible for taxes												14,100
Acquired intangible assets												$ 12,300
ATP
Business Acquisition [Line Items]
Goodwill													$ 29,034
Purchase price													65,254
Goodwill expected to be deductible for taxes													29,000
Acquired intangible assets													$ 25,000
Annax
Business Acquisition [Line Items]
Goodwill									$ 25,471
Purchase price									28,664
Goodwill expected to be deductible for taxes									0
Acquired intangible assets									$ 12,828
AM General
Business Acquisition [Line Items]
Goodwill											$ 6,114
Purchase price											10,416
Goodwill expected to be deductible for taxes											0
Acquired intangible assets											$ 19,427
Acquisitions other than Faiveley
Business Acquisition [Line Items]
Deposit in escrow						24,400
Recent Acquisitions
Business Acquisition [Line Items]
Goodwill						101,400
Goodwill and other intangible assets						199,500
Acquired intangible assets						98,100
Recent Acquisitions | Trade names
Business Acquisition [Line Items]
Acquired intangible assets						$ 22,300
Recent Acquisitions | Intellectual Property
Business Acquisition [Line Items]
Average useful life, years						20 years
Recent Acquisitions | Customer Relationships
Business Acquisition [Line Items]
Acquired intangible assets						$ 70,200
Average useful life, years						20 years

ACQUISITIONS - Summary of Preli

ACQUISITIONS - Summary of Preliminary Estimated Fair Values of Faiveley Transport Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Nov. 30, 2016
Assets acquired
Goodwill	$ 2,396,544	$ 2,460,103
Faiveley
Assets acquired
Cash and cash equivalents			$ 178,318
Accounts receivable			439,631
Inventories			205,649
Other current assets			70,930
Property, plant & equipment			148,746
Goodwill			1,262,350
Other noncurrent assets			184,564
Total assets acquired			3,071,246
Liabilities assumed
Current liabilities			819,493
Debt			409,899
Other noncurrent liabilities			335,039
Total liabilities assumed			1,564,431
Net assets acquired			1,506,815
Faiveley | Trade names
Assets acquired
Acquired intangible assets			346,328
Faiveley | Customer Relationships
Assets acquired
Acquired intangible assets			233,529
Faiveley | Patents
Assets acquired
Acquired intangible assets			$ 1,201

ACQUISITIONS - Summary of Fair

ACQUISITIONS - Summary of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Mar. 22, 2018	Dec. 31, 2017	Dec. 04, 2017	Oct. 02, 2017	Apr. 05, 2017	Mar. 13, 2017
Business Acquisition [Line Items]
Goodwill	$ 2,396,544		$ 2,460,103
Melett
Business Acquisition [Line Items]
Current assets, net of cash acquired				$ 34,491
Property, plant & equipment				5,917
Goodwill				26,653
Other intangible assets				28,590
Total assets acquired				95,651
Total liabilities assumed				(23,758)
Net assets acquired				$ 71,893
TTC
Business Acquisition [Line Items]
Current assets, net of cash acquired						$ 3,744
Property, plant & equipment						5,413
Goodwill						14,095
Other intangible assets						12,300
Total assets acquired						35,552
Total liabilities assumed						(3,041)
Net assets acquired						$ 32,511
ATP
Business Acquisition [Line Items]
Current assets, net of cash acquired							$ 11,666
Property, plant & equipment							5,354
Goodwill							29,034
Other intangible assets							25,000
Total assets acquired							71,054
Total liabilities assumed							(5,800)
Net assets acquired							$ 65,254
Annax
Business Acquisition [Line Items]
Current assets, net of cash acquired		$ 34,036
Property, plant & equipment		674
Goodwill		25,471
Other intangible assets		12,828
Total assets acquired		73,009
Total liabilities assumed		(44,345)
Net assets acquired		$ 28,664
AM General
Business Acquisition [Line Items]
Current assets, net of cash acquired					$ 6,805
Property, plant & equipment					4,140
Goodwill					6,114
Other intangible assets					19,427
Total assets acquired					36,486
Total liabilities assumed					(26,070)
Net assets acquired					$ 10,416

ACQUISITIONS - Pro Forma Financ

ACQUISITIONS - Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Combinations [Abstract]
Net sales									$ 4,376,972	$ 3,994,515
Gross profit									1,235,821	1,099,878
Net income attributable to Wabtec shareholders									$ 292,207	$ 273,301
Diluted earnings per share
As Reported (in dollars per share)	$ 0.36	$ 0.91	$ 0.87	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.05	$ 2.72	$ 3.34
Pro forma (in dollars per share)									$ 3.06	$ 2.84

MERGER OF WABTEC WITH GE TRAN_2

MERGER OF WABTEC WITH GE TRANSPORTATION (Details) - USD ($)	Feb. 25, 2019	Feb. 22, 2019	Dec. 31, 2018	Sep. 14, 2018	Jun. 08, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Common stock, shares outstanding (in shares)			96,614,946			96,034,352
Preferred stock, shares outstanding (in shares)			0			0
GE Transportation | GE and Pre-Merger Holders
Business Acquisition [Line Items]
Percentage of outstanding shares transferred			49.20%
GE Transportation | General Electric Company
Business Acquisition [Line Items]
Percentage of outstanding shares transferred			9.90%
GE Transportation | General Electric Company | Convertible Preferred Stock
Business Acquisition [Line Items]
Percentage of outstanding shares transferred			15.00%
Senior Notes
Business Acquisition [Line Items]
Debt instrument face amount				$ 2,500,000,000
Floating Rate Senior Notes | Senior Notes
Business Acquisition [Line Items]
Debt instrument face amount				500,000,000
Senior Notes Due 2024 | Senior Notes
Business Acquisition [Line Items]
Debt instrument face amount				750,000,000
Senior Notes Due 2028 | Senior Notes
Business Acquisition [Line Items]
Debt instrument face amount				$ 1,250,000,000
Line of Credit | Delayed Draw Term Loan
Business Acquisition [Line Items]
Revolving credit facility, amount					$ 400,000,000
Subsequent Event | GE Transportation
Business Acquisition [Line Items]
Consideration transferred	$ 2,875,000,000
Business combination, consideration transferred		$ 10,200,000,000
Subsequent Event | GE Transportation | SpinCo Class B Preferred Stock
Business Acquisition [Line Items]
Business combination, consideration transferred	$ 10,000,000
Subsequent Event | GE Transportation | Convertible Preferred Stock
Business Acquisition [Line Items]
Shares issuable (in shares)	10,000
Wabtec | GE Transportation | SpinCo Class B Preferred Stock
Business Acquisition [Line Items]
Preferred stock, shares outstanding (in shares)			10,000
General Electric Company | GE Transportation | SpinCo Class A Preferred Stock
Business Acquisition [Line Items]
Preferred stock, shares outstanding (in shares)			15,000
General Electric Company | Subsequent Event | GE Transportation | SpinCo Common Stock
Business Acquisition [Line Items]
Common stock, shares outstanding (in shares)	8,700,000,000
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class A Preferred Stock
Business Acquisition [Line Items]
Preferred stock, shares outstanding (in shares)	15,000
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class B Preferred Stock
Business Acquisition [Line Items]
Preferred stock, shares outstanding (in shares)	10,000
General Electric Company | Subsequent Event | GE Transportation | SpinCo Class C Preferred Stock
Business Acquisition [Line Items]
Preferred stock, shares outstanding (in shares)	1
General Electric Company | Minimum | GE Transportation
Business Acquisition [Line Items]
Percentage of common shares outstanding			14.90%
General Electric Company | Maximum | GE Transportation
Business Acquisition [Line Items]
Percentage of common shares outstanding			19.90%
Pre-merger Wabtec Stockholders | GE Transportation
Business Acquisition [Line Items]
Percentage of outstanding shares transferred			50.80%
Pre-merger Wabtec Stockholders | Maximum | GE Transportation
Business Acquisition [Line Items]
Percentage of common shares outstanding			18.50%

SUPPLEMENTAL CASH FLOW DISCLO_3

SUPPLEMENTAL CASH FLOW DISCLOSURES (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]
Interest paid during the year	$ 81,756	$ 75,317	$ 30,211
Income taxes paid during the year, net of amount refunded	83,949	89,379	121,563
Fair value of assets acquired	91,758	452,209	3,118,420
Liabilities assumed	32,908	207,788	1,453,382
Non-controlling interest (acquired) assumed	0	(761,786)	760,343
Stock and cash paid	58,850	1,006,207	904,695
Less: Cash acquired	7,697	35,408	186,903
Stock used for acquisition	0	25,500	534,679
Net cash paid	$ 51,153	$ 945,299	$ 183,113

INVENTORIES (Detail)

INVENTORIES (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 465,873	$ 378,481
Work-in-progress	154,485	167,390
Finished goods	224,528	196,763
Total inventories	$ 844,886	$ 742,634

PROPERTY, PLANT & EQUIPMENT - M

PROPERTY, PLANT & EQUIPMENT - Major Classes of Depreciable Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Machinery and equipment	$ 749,782	$ 728,257
Buildings and improvements	248,111	259,561
Land and improvements	38,657	38,228
Property, plant and equipment	1,036,550	1,026,046
Less: accumulated depreciation	(472,813)	(452,074)
Property, plant and equipment, net	$ 563,737	$ 573,972	$ 518,376

PROPERTY, PLANT & EQUIPMENT - E

PROPERTY, PLANT & EQUIPMENT - Estimated Useful Lives of Property Plant and Equipment (Detail)	12 Months Ended
	Dec. 31, 2018
Land improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	10 years
Land improvements | Maximum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	20 years
Building and improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	20 years
Building and improvements | Maximum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	40 years
Machinery and equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	3 years
Machinery and equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated useful lives in years	15 years

PROPERTY, PLANT & EQUIPMENT - N

PROPERTY, PLANT & EQUIPMENT - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 66.4	$ 66.7	$ 47.1

INTANGIBLES - Change in the Car

INTANGIBLES - Change in the Carrying Amount of Goodwill by Segment (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Goodwill [Roll Forward]
Balance beginning of period	$ 2,460,103
Additions	23,268
Foreign currency impact	(86,827)
Balance end of period	2,396,544
Freight Segment
Goodwill [Roll Forward]
Balance beginning of period	718,958
Additions	6,478
Foreign currency impact	(12,045)
Balance end of period	713,391
Transit Segment
Goodwill [Roll Forward]
Balance beginning of period	1,741,145
Additions	16,790
Foreign currency impact	(74,782)
Balance end of period	$ 1,683,153

INTANGIBLES - Narrative (Detail

INTANGIBLES - Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets Disclosure [Line Items]
Trade names	$ 582,800	$ 603,400
Intangible assets, amortization expense	$ 39,754	$ 36,516	$ 22,698
Patents
Intangible Assets Disclosure [Line Items]
Intangible assets, weighted average useful life (years)	10 years
Customer Relationships
Intangible Assets Disclosure [Line Items]
Intangible assets, weighted average useful life (years)	16 years
Intellectual Property
Intangible Assets Disclosure [Line Items]
Intangible assets, weighted average useful life (years)	13 years

INTANGIBLES - Intangible Assets

INTANGIBLES - Intangible Assets Other Than Goodwill and Trademarks (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	$ 547,089	$ 601,013
Patents And Other
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	15,328	17,554
Intangible assets, accumulated amortization	42,446	43,021
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Intangible assets, net of accumulated amortization	531,761	583,459
Intangible assets, accumulated amortization	$ 158,533	$ 126,824

INTANGIBLES - Estimated Amortiz

INTANGIBLES - Estimated Amortization Expense Five Succeeding Years (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,019	$ 38,289
2,020	36,552
2,021	35,595
2,022	35,283
2,023	$ 34,945

CONTRACT ASSETS AND CONTRACT _3

CONTRACT ASSETS AND CONTRACT LIABILITIES (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Contract Assets
Balance at beginning of year	$ 366,168
Recognized in current year	426,829
Reclassified to accounts receivable	(432,307)
Foreign currency impact	(15,105)
Balance at December 31, 2018	345,585
Contract Liabilities
Balance at beginning of year	463,704
Recognized in current year	230,159
Amounts in beginning balance reclassified to revenue	(199,735)
Current year amounts reclassified to revenue	(30,914)
Foreign currency impact	(18,409)
Balance at December 31, 2018	$ 444,805

LONG-TERM DEBT - Schedule of Lo

LONG-TERM DEBT - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 14, 2018	Dec. 31, 2017	Oct. 31, 2016	Aug. 31, 2013
Debt Instrument [Line Items]
Total	$ 3,856,873		$ 1,870,528
Less - current portion	64,099		47,225
Long-term portion	3,792,774		1,823,303
Other Debt Obligations
Debt Instrument [Line Items]
Long-term debt	42,246		21,182
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Long-term debt	338,112		853,124
Unamortized debt issuance cost	3,138		2,451
Floating Rate Notes, due 2021 | Senior Notes
Debt Instrument [Line Items]
Long-term debt	496,796		0
Unamortized debt issuance cost	3,204
4.150% Senior Notes, due 2024 | Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 742,957		0
Stated interest rate (as a percent)	4.15%	4.15%
Unamortized debt issuance cost	$ 7,043
4.70% Senior Notes, due 2028 | Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,239,657		0
Stated interest rate (as a percent)	4.70%	4.70%
Unamortized debt issuance cost	$ 10,343
3.45% Senior Notes, due 2026 | Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 748,282		$ 747,655
Stated interest rate (as a percent)	3.45%		3.45%	3.45%
Unamortized debt issuance cost	$ 1,718		$ 2,345
4.375% Senior Notes, due 2023 | Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 248,823		$ 248,567
Stated interest rate (as a percent)	4.375%		4.375%		4.375%
Unamortized debt issuance cost	$ 1,177		$ 1,433

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Detail) - USD ($)	Feb. 12, 2019	Sep. 14, 2018	Oct. 31, 2016	Jun. 22, 2016	Aug. 31, 2013	Dec. 31, 2018	Jun. 08, 2018	Dec. 31, 2017	Jun. 05, 2014
Interest rate swap agreements
Debt Instrument [Line Items]
Interest rate swap agreements, notional amount						$ 150,000,000			$ 150,000,000
Interest rate on notional value (as a percent)									3.68%
2018 Refinancing Credit Agreement
Debt Instrument [Line Items]
Covenant restrictions						$ 300,000,000
Debt Instrument, Restrictive Covenants, EBITDA to Interest Expense Ratio, Minimum						3
Debt Instrument, Restrictive Covenants, Leverage Ratio, Maximum						3.25
Debt Instrument, Restrictive Covenants, Minimum Cash Consideration Transferred in Acquisition						$ 500,000,000
Debt Instrument, Restrictive Covenants, Leverage Ratio, Three Quarters Following Acquisition, Maximum						3.75
Debt Instrument, Restrictive Covenants, Leverage Ratio, Fourth and Fifth Quarter Following Acquisition, Maximum						3.50
2018 Refinancing Credit Agreement | LIBOR | Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.00%
2018 Refinancing Credit Agreement | LIBOR | Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.875%
2018 Refinancing Credit Agreement | Base Rate | Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2018 Refinancing Credit Agreement | Base Rate | Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.875%
2016 Refinancing Credit Agreement
Debt Instrument [Line Items]
Deferred financing cost				$ 3,300,000
2016 Refinancing Credit Agreement | Federal Funds Effective Swap Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.50%
2016 Refinancing Credit Agreement | LIBOR
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.00%
2016 Refinancing Credit Agreement | Base Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2016 Refinancing Credit Agreement | Base Rate | Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.00%
2016 Refinancing Credit Agreement | Base Rate | Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.75%
2016 Refinancing Credit Agreement | Alternative Rate
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.75%
2016 Refinancing Credit Agreement | Alternative Rate | Minimum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						0.75%
2016 Refinancing Credit Agreement | Alternative Rate | Maximum
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate						1.75%
Senior Notes
Debt Instrument [Line Items]
Debt instrument face amount		$ 2,500,000,000
Senior Notes | Floating Rate Notes, due 2021
Debt Instrument [Line Items]
Debt instrument face amount		$ 500,000,000
Debt Instrument, Term		1 year
Debt issuance face value (as a percent)		100.00%
Deferred financing cost		$ 3,500,000
Long-term debt						$ 496,796,000		$ 0
Senior Notes | Floating Rate Notes, due 2021 | LIBOR
Debt Instrument [Line Items]
Debt instrument basis points spread on variable rate		1.05%
Senior Notes | 4.150% Senior Notes, due 2024
Debt Instrument [Line Items]
Debt instrument face amount		$ 750,000,000
Debt issuance face value (as a percent)		99.805%
Deferred financing cost		$ 7,400,000
Stated interest rate (as a percent)		4.15%				4.15%
Long-term debt						$ 742,957,000		0
Senior Notes | 4.70% Senior Notes, due 2028
Debt Instrument [Line Items]
Debt instrument face amount		$ 1,250,000,000
Debt issuance face value (as a percent)		99.889%
Deferred financing cost		$ 10,600,000
Stated interest rate (as a percent)		4.70%				4.70%
Long-term debt						$ 1,239,657,000		$ 0
Senior Notes | 3.45% Senior Notes, due 2026
Debt Instrument [Line Items]
Debt instrument face amount			$ 750,000,000
Debt issuance face value (as a percent)			99.965%
Deferred financing cost			$ 2,700,000
Stated interest rate (as a percent)			3.45%			3.45%		3.45%
Long-term debt						$ 748,282,000		$ 747,655,000
Senior Notes | 4.375% Senior Notes, due 2023
Debt Instrument [Line Items]
Debt instrument face amount					$ 250,000,000
Debt issuance face value (as a percent)					99.879%
Deferred financing cost					$ 2,600,000
Stated interest rate (as a percent)					4.375%	4.375%		4.375%
Long-term debt						$ 248,823,000		$ 248,567,000
Senior Notes | 2018 Refinancing Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, amount						29,200,000
Covenant restrictions						1,170,800,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt						$ 338,112,000		$ 853,124,000
Line of Credit | 2018 Refinancing Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, amount							$ 1,200,000,000
Line of Credit Uncommitted Accordion Feature							600,000,000
Line of Credit | 2018 Refinancing Credit Agreement | Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount							350,000,000
Line of Credit | 2018 Refinancing Credit Agreement | Delayed Draw Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount							400,000,000
Line of Credit | 2018 Refinancing Credit Agreement | Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, amount							450,000,000
Line of Credit | 2018 Refinancing Credit Agreement | Swing Line Sub Facility
Debt Instrument [Line Items]
Revolving credit facility, amount							75,000,000
Line of Credit | 2016 Refinancing Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, amount				$ 1,200,000,000
Credit facility loan term, years				5 years
Line of Credit | 2016 Refinancing Credit Agreement | Term Loan
Debt Instrument [Line Items]
Revolving credit facility, amount				$ 400,000,000
Bridge Loan | 2018 Refinancing Credit Agreement
Debt Instrument [Line Items]
Revolving credit facility, amount							$ 2,500,000,000
Subsequent Event | Senior Notes
Debt Instrument [Line Items]
Interest rate increase	0.25%

LONG-TERM DEBT - Principal Repa

LONG-TERM DEBT - Principal Repayments of Debt and Capital Lease (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
2,019	$ 64,099
2,020	36,387
2,021	764,980
2,022	54
2,023	248,873
Future years	2,742,480
Total	$ 3,856,873	$ 1,870,528

EMPLOYEE BENEFIT PLANS - Obliga

EMPLOYEE BENEFIT PLANS - Obligations and Funded Status (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Amounts recognized in the statement of financial position consist of:
Noncurrent liabilities				$ (95,446)	$ (103,734)
United States | Defined Benefit Pension Plans
Change in projected benefit obligation
Obligation at beginning of year	$ (44,213)	$ (45,512)
Opening balance sheet adjustment	0	0
Service cost	(349)	(344)	$ (337)
Interest cost	(1,332)	(1,422)	(1,475)
Employee contributions	0	0
Plan settlements and amendments	0	0
Benefits paid	3,476	3,079
Acquisition	0	0
Actuarial gain (loss)	2,942	(14)
Effect of currency rate changes	0	0
Obligation at end of year	(39,476)	(44,213)	(45,512)
Change in plan assets
Fair value of plan assets at beginning of year	37,432	35,802
Opening balance sheet adjustment	0	0
Actual return on plan assets	(1,983)	4,223
Employer contributions	0	486
Employee contributions	0	0
Benefits paid	(3,476)	(3,079)
Settlements	0	0
Effect of currency rate changes	0	0
Fair value of plan assets at end of year	31,973	37,432	35,802
Fair value of plan assets	37,432	35,802	35,802	31,973	37,432
Benefit obligations	(44,213)	(45,512)	(45,512)	(39,476)	(44,213)
Funded status				(7,503)	(6,781)
Amounts recognized in the statement of financial position consist of:
Noncurrent assets				0	0
Current liabilities				0	0
Noncurrent liabilities				(7,503)	(6,781)
Net amount recognized				(7,503)	(6,781)
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Prior service cost				(3)	(6)
Net actuarial (loss) gain				(20,268)	(20,418)
Net amount recognized				(20,271)	(20,424)
United States | Other Postretirement Benefits Plans
Change in projected benefit obligation
Obligation at beginning of year	(11,345)	(11,876)
Service cost	(5)	(5)	(4)
Interest cost	(326)	(350)	(389)
Benefits paid	786	970
Actuarial gain (loss)	1,072	(84)
Effect of currency rate changes	0	0
Obligation at end of year	(9,818)	(11,345)	(11,876)
Change in plan assets
Fair value of plan assets at beginning of year	0	0
Employer contributions	786	970
Benefits paid	(786)	(970)
Fair value of plan assets at end of year	0	0	0
Fair value of plan assets	0	0	0	0	0
Benefit obligations	(11,345)	(11,876)	(11,876)	(9,818)	(11,345)
Funded status				(9,818)	(11,345)
Amounts recognized in the statement of financial position consist of:
Current liabilities				(984)	(1,046)
Noncurrent liabilities				(8,834)	(10,299)
Net amount recognized				(9,818)	(11,345)
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Prior service cost				18,097	19,616
Net actuarial (loss) gain				(16,593)	(18,882)
Net amount recognized				1,504	734
Foreign Plan
Change in plan assets
Fair value of plan assets at beginning of year	319,033
Fair value of plan assets at end of year	271,472	319,033
Fair value of plan assets	319,033	319,033		271,472	319,033
Foreign Plan | Defined Benefit Pension Plans
Change in projected benefit obligation
Obligation at beginning of year	(353,017)	(319,551)
Opening balance sheet adjustment	0	(5,321)
Service cost	(2,611)	(2,740)	(1,379)
Interest cost	(7,047)	(7,310)	(5,774)
Employee contributions	(448)	(880)
Plan settlements and amendments	15,191	4,153
Benefits paid	13,453	12,906
Acquisition	(864)	0
Actuarial gain (loss)	6,740	(3,009)
Effect of currency rate changes	19,337	(31,265)
Obligation at end of year	(309,266)	(353,017)	(319,551)
Change in plan assets
Fair value of plan assets at beginning of year	281,602	241,283
Opening balance sheet adjustment	0	2,058
Actual return on plan assets	(6,938)	19,102
Employer contributions	10,821	13,479
Employee contributions	448	880
Benefits paid	(13,453)	(12,905)
Settlements	(16,601)	(4,523)
Effect of currency rate changes	(16,380)	22,228
Fair value of plan assets at end of year	239,499	281,602	241,283
Fair value of plan assets	281,602	241,283	241,283	239,499	281,602
Benefit obligations	(353,017)	(319,551)	(319,551)	(309,266)	(353,017)
Funded status				(69,767)	(71,415)
Amounts recognized in the statement of financial position consist of:
Noncurrent assets				8,910	10,577
Current liabilities				(2,062)	(2,158)
Noncurrent liabilities				(76,615)	(79,834)
Net amount recognized				(69,767)	(71,415)
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Prior service cost				(1,419)	(32)
Net actuarial (loss) gain				(58,748)	(54,043)
Net amount recognized				(60,167)	(54,075)
Foreign Plan | Other Postretirement Benefits Plans
Change in projected benefit obligation
Obligation at beginning of year	(3,720)	(3,425)
Service cost	(31)	(28)	(29)
Interest cost	(100)	(98)	(99)
Benefits paid	201	199
Actuarial gain (loss)	646	(131)
Effect of currency rate changes	335	(237)
Obligation at end of year	(2,669)	(3,720)	(3,425)
Change in plan assets
Fair value of plan assets at beginning of year	0	0
Employer contributions	201	199
Benefits paid	(201)	(199)
Fair value of plan assets at end of year	0	0	0
Fair value of plan assets	0	0	0	0	0
Benefit obligations	$ (3,720)	$ (3,425)	$ (3,425)	(2,669)	(3,720)
Funded status				(2,669)	(3,720)
Amounts recognized in the statement of financial position consist of:
Current liabilities				(175)	(208)
Noncurrent liabilities				(2,494)	(3,512)
Net amount recognized				(2,669)	(3,720)
Amounts recognized in accumulated other comprehensive income (loss) consist of:
Prior service cost				2	9
Net actuarial (loss) gain				748	154
Net amount recognized				$ 750	$ 163

EMPLOYEE BENEFIT PLANS - Narrat

EMPLOYEE BENEFIT PLANS - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Number of shares held on behalf of participants (in shares)	442,239	495,274
Market value of the shares held on behalf of participants	$ 31.1	$ 40.3
United States | Defined Benefit Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Aggregate accumulated benefit obligation	$ 38.8	43.3
United States | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Target asset allocation (as a percent)	50.00%
United States | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Target asset allocation (as a percent)	50.00%
United States | Other Postretirement Benefits Plans
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Assumed health care cost trend rate, initial rate (as a percent)	6.30%
Assumed health care cost trend rate, ultimate rate (as a percent)	4.50%
Effect of 1% point increase on service and interest cost components (less than)	$ 0.1
Effect of 1% point decrease on service and interest cost components (less than)	0.1
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Aggregate accumulated benefit obligation	301.1	$ 344.3
Contribution to the plan	$ 6.4
Foreign Plan | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Target asset allocation (as a percent)	31.00%
Foreign Plan | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Target asset allocation (as a percent)	40.00%
Foreign Plan | Defined Benefit Pension Plans | Other Investments
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Target asset allocation (as a percent)	29.00%
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Assumed health care cost trend rate, initial rate (as a percent)	6.04%
Assumed health care cost trend rate, ultimate rate (as a percent)	4.50%

EMPLOYEE BENEFIT PLANS - U.S. a

EMPLOYEE BENEFIT PLANS - U.S. and International Pension Plans With Accumulated and Projected Benefit Obligations in Excess of Plan Assets (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
United States
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ (39,476)	$ (44,213)
Accumulated benefit obligation	(38,805)	(43,340)
Fair value of plan assets	31,973	37,432
Projected benefit obligation	(39,476)	(44,213)
Fair value of plan assets	31,973	37,432
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	(251,010)	(282,077)
Accumulated benefit obligation	(243,613)	(274,557)
Fair value of plan assets	172,333	200,218
Projected benefit obligation	(251,010)	(283,106)
Fair value of plan assets	$ 172,333	$ 201,115

EMPLOYEE BENEFIT PLANS - Compon

EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 349	$ 344	$ 337
Interest cost	1,332	1,422	1,475
Expected return on plan assets	(1,780)	(1,731)	(2,076)
Amortization of initial net obligation and prior service cost	3	3	3
Amortization of net loss	970	989	914
Settlement and curtailment losses recognized	0	0	0
Net periodic benefit cost	874	1,027	653
United States | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	5	4
Interest cost	326	350	389
Amortization of initial net obligation and prior service cost	(1,519)	(1,519)	(1,709)
Amortization of net loss	1,216	1,225	1,287
Net periodic benefit cost	28	61	(29)
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2,611	2,740	1,379
Interest cost	7,047	7,310	5,774
Expected return on plan assets	(13,458)	(12,412)	(9,971)
Amortization of initial net obligation and prior service cost	22	27	61
Amortization of net loss	2,149	2,846	1,818
Settlement and curtailment losses recognized	3,112	768	218
Net periodic benefit cost	1,483	1,279	(721)
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	31	28	29
Interest cost	100	98	99
Amortization of initial net obligation and prior service cost	(7)	(7)	(7)
Amortization of net loss	(8)	(23)	(29)
Net periodic benefit cost	$ 116	$ 96	$ 92

EMPLOYEE BENEFIT PLANS - Other

EMPLOYEE BENEFIT PLANS - Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
United States | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss) arising during the year	$ 1,072
Effect of exchange rates	0
Amortization or curtailment recognition of prior service cost	(1,519)
Amortization or settlement recognition of net loss (gain)	1,216
Total recognized in other comprehensive income (loss)	769
Total recognized in net periodic benefit cost and other comprehensive income (loss)	741
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss) arising during the year	(820)
Effect of exchange rates	0
Amortization, settlement, or curtailment recognition of net transition obligation	0
Amortization or curtailment recognition of prior service cost	3
Amortization or settlement recognition of net loss (gain)	970
Total recognized in other comprehensive income (loss)	153
Total recognized in net periodic benefit cost and other comprehensive income (loss)	(721)
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss) arising during the year	646
Effect of exchange rates	(44)
Amortization or curtailment recognition of prior service cost	(7)
Amortization or settlement recognition of net loss (gain)	(8)
Total recognized in other comprehensive income (loss)	587
Total recognized in net periodic benefit cost and other comprehensive income (loss)	471
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net gain (loss) arising during the year	(13,655)
Effect of exchange rates	3,690
Amortization, settlement, or curtailment recognition of net transition obligation	3,112
Amortization or curtailment recognition of prior service cost	(1,388)
Amortization or settlement recognition of net loss (gain)	2,149
Total recognized in other comprehensive income (loss)	(6,092)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ (7,575)

EMPLOYEE BENEFIT PLANS - Weight

EMPLOYEE BENEFIT PLANS - Weighted Average Assumptions Used to Develop Actuarial Present Value of Projected Benefit Obligation (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	4.30%	3.56%	3.95%
Expected return on plan assets (as a percent)	5.15%	4.95%	5.70%
Rate of compensation increase (as a percent)	3.00%	3.00%	3.00%
United States | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	4.17%	3.43%	3.76%
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	2.53%	2.40%	2.51%
Expected return on plan assets (as a percent)	5.10%	5.02%	6.07%
Rate of compensation increase (as a percent)	2.61%	2.54%	2.54%
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate (as a percent)	3.49%	3.21%	3.46%

EMPLOYEE BENEFIT PLANS - Amount

EMPLOYEE BENEFIT PLANS - Amounts Included in Other Comprehensive Loss That are Expected to be Recognized as Components of Periodic Benefit Costs (Detail) $ in Thousands	Dec. 31, 2018USD ($)
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	$ 3
Net actuarial loss	826
Total recognized in net periodic benefit cost and other comprehensive (loss) income	829
United States | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	(1,519)
Net actuarial loss	1,116
Total recognized in net periodic benefit cost and other comprehensive (loss) income	(403)
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	53
Net actuarial loss	2,512
Total recognized in net periodic benefit cost and other comprehensive (loss) income	2,565
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
Prior service cost	(2)
Net actuarial loss	(88)
Total recognized in net periodic benefit cost and other comprehensive (loss) income	$ (90)

EMPLOYEE BENEFIT PLANS - Pensio

EMPLOYEE BENEFIT PLANS - Pension Plan Assets by Asset Category (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
United States | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 13,162	$ 18,122
United States | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,528	18,304
United States | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,283	1,006
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31,973	37,432	$ 35,802
United States | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13,162	18,122
United States | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,528	18,304
United States | Defined Benefit Pension Plans | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,283	1,006
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	271,472	319,033
Foreign Plan | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	95,058	138,874
Foreign Plan | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	125,587	111,204
Foreign Plan | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,547	2,507
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	239,499	281,602	$ 241,283
Foreign Plan | Defined Benefit Pension Plans | Equity security funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	95,058	100,453
Foreign Plan | Defined Benefit Pension Plans | Debt security funds and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	140,894	178,730
Foreign Plan | Defined Benefit Pension Plans | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3,547	$ 2,419

EMPLOYEE BENEFIT PLANS - Schedu

EMPLOYEE BENEFIT PLANS - Schedule of Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
United States | Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 13,162	$ 18,122
United States | Equity | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Equity | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13,162	18,122
United States | Equity | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Equity | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Debt Securities and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17,528	18,304
United States | Debt Securities and other | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Debt Securities and other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,523	4,273
United States | Debt Securities and other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13,005	14,031
United States | Debt Securities and other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,283	1,006
United States | Cash and cash equivalents | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,283	1,006
United States | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
United States | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	271,472	319,033
Foreign Plan | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,710	4,586
Foreign Plan | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	57,363	64,555
Foreign Plan | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	200,475	236,769
Foreign Plan | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	9,924	13,123
Foreign Plan | Equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	95,058	138,874
Foreign Plan | Equity | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,710	4,586
Foreign Plan | Equity | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	34,848	38,647
Foreign Plan | Equity | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	56,500	95,641
Foreign Plan | Equity | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Debt Securities and other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	125,587	111,204
Foreign Plan | Debt Securities and other | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Debt Securities and other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Debt Securities and other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	125,587	111,204
Foreign Plan | Debt Securities and other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,547	2,507
Foreign Plan | Cash and cash equivalents | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,547	2,507
Foreign Plan | Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15,307	29,016
Foreign Plan | Insurance Contracts | NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Insurance Contracts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Foreign Plan | Insurance Contracts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,383	15,893
Foreign Plan | Insurance Contracts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 9,924	$ 13,123

EMPLOYEE BENEFIT PLANS - Sche_2

EMPLOYEE BENEFIT PLANS - Schedule of Reconciliation of Level 3 Assets (Details) - Defined Benefit Pension Plans - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	$ 13,123	$ 12,996
Net purchases, issuances, and settlements	(3,611)	778
Actual return on plan assets	277	375
Opening balance sheet adjustment		(1,308)
Transfers	658
Effect of currency rate changes	(523)	282
Fair value of plan assets at end of year	$ 9,924	$ 13,123

EMPLOYEE BENEFIT PLANS - Benefi

EMPLOYEE BENEFIT PLANS - Benefit Payments Expected to be Paid to Plan Participants (Detail) $ in Thousands	Dec. 31, 2018USD ($)
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2,019	$ 3,233
2,020	3,242
2,021	3,100
2,022	3,095
2,023	3,077
2024 through 2028	13,623
United States | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
2,019	983
2,020	949
2,021	920
2,022	879
2,023	854
2024 through 2028	3,661
Foreign Plan | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2,019	11,556
2,020	12,017
2,021	12,489
2,022	13,353
2,023	13,583
2024 through 2028	75,457
Foreign Plan | Other Postretirement Benefits Plans
Defined Benefit Plan Disclosure [Line Items]
2,019	175
2,020	171
2,021	181
2,022	184
2,023	196
2024 through 2028	$ 912

EMPLOYEE BENEFIT PLANS - Costs

EMPLOYEE BENEFIT PLANS - Costs Recognized Under Defined Contribution Plans and Multiemployer Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Multi-employer pension and health & welfare plans	$ 965	$ 1,522	$ 2,054
401(k) savings and other defined contribution plans	27,869	23,209	23,062
Total	$ 28,834	$ 24,731	$ 25,116

EMPLOYEE BENEFIT PLANS - Contri

EMPLOYEE BENEFIT PLANS - Contributions in Multiemployer Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan Disclosure [Line Items]
Contributions by the Company	$ 965	$ 1,020	$ 1,306
Contribution to the plan (as a percent)	5.00%
Idaho Operating Engineers Employers Pension Trust Fund
Defined Contribution Plan Disclosure [Line Items]
EIN	916,075,538
Plan Number	1
Pension Protection Act Zone Status		Green	Green
FIP / RP Status Pending / Implemented	No
Contributions by the Company	$ 965	$ 1,020	$ 1,306
Surcharge Imposed	No
Expiration Dates of Collective Bargaining Agreements	Aug. 6, 2021
Automobile Mechanics Local Number Seven Hundred And One Union and Industry Pension Plan
Defined Contribution Plan Disclosure [Line Items]
EIN	366,042,061
FIP / RP Status Pending / Implemented	Implemented
Surcharge Imposed	Yes

INCOME TAXES - Components of In

INCOME TAXES - Components of Income from Operations before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Domestic	$ 145,096	$ 140,325	$ 276,218
Foreign	222,486	211,738	136,619
Income from operations before income taxes	$ 367,582	$ 352,063	$ 412,837

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Net tax expense recorded		$ 4,300
Provisional expense for U.S. tax reform bill		55,000
Net benefit for revaluation of deferred tax assets and liabilities		(50,700)
Net tax expense (benefit) related to Tax Act	$ 27,200	(5,100)
Tax benefit related to French Finance Act	$ 22,900
Provisional benefit for net deferred taxes		$ (24,600)
France tax rate change (as a percent)	(0.00%)	6.50%	6.50%
Provisional transition tax expense (benefit)	$ (14,400)	$ 51,800
U.S. tax rate change	0.60%	7.90%	(0.00%)
U.S. tax reform (benefit) provision	(1.40%)	15.60%	0.00%
Transaction costs related to acquisitions	0.00%	0.00%	1.50%
Valuation allowance	$ 41,779	$ 25,683
Net operating loss carryforwards, subject to expiration	342,500
Unrecognized tax benefits	9,543	6,910	$ 8,423	$ 10,557
Unrecognized tax benefits if recognized that would affect effective tax rate	8,400	4,400
Accrued interest	900	$ 800
Unrecognized tax benefits subject to change within the next 12 months	4,100
Global Intangible Low Taxed Income
Operating Loss Carryforwards [Line Items]
Provisional benefit for net deferred taxes	$ (9,300)

INCOME TAXES - Consolidated Pro

INCOME TAXES - Consolidated Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current taxes
Federal	$ 6,940	$ 86,157	$ 72,317
State	5,771	3,644	9,953
Foreign	68,467	67,395	27,391
Current taxes	81,178	157,196	109,661
Deferred taxes
Federal	4,689	(22,863)	11,013
State	1,263	(1,024)	1,953
Foreign	(11,251)	(43,536)	(23,194)
Deferred taxes	(5,299)	(67,423)	(10,228)
Total provision	$ 75,879	$ 89,773	$ 99,433

INCOME TAXES - Reconciliation o

INCOME TAXES - Reconciliation of Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	21.00%	35.00%	35.00%
State taxes	1.60%	0.40%	2.10%
Foreign	0.70%	(8.30%)	(4.30%)
Research and development credit	(1.10%)	(0.80%)	(1.00%)
Manufacturing deduction	(0.00%)	(1.10%)	(1.80%)
France tax rate change	0.00%	(6.50%)	(6.50%)
U.S. tax rate change	(0.60%)	(7.90%)	0.00%
U.S. tax reform (benefit) provision	(1.40%)	15.60%	0.00%
Transaction costs related to acquisitions	0.00%	0.00%	1.50%
Other, net	0.40%	(0.90%)	(0.90%)
Effective rate	20.60%	25.50%	24.10%

INCOME TAXES - Components of De

INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred income tax assets:
Accrued expenses and reserves	$ 13,795	$ 10,961
Warranty reserve	25,944	20,211
Deferred compensation/employee benefits	8,994	18,353
Pension and postretirement obligations	19,532	21,637
Inventory	16,769	19,620
Net operating loss carry forwards	85,051	65,671
Other	20,048	14,974
Gross deferred income tax assets	190,133	171,427
Valuation allowance	41,779	25,683
Total deferred income tax assets	148,354	145,744
Deferred income tax liabilities:
Property, plant & equipment	35,440	37,015
Intangibles	287,419	288,141
Total deferred income tax liabilities	322,859	325,156
Total deferred income tax liabilities	$ (174,505)	$ (179,412)

INCOME TAXES - Uncertain Tax Po

INCOME TAXES - Uncertain Tax Positions (Detail) - 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]
Gross liability for unrecognized tax benefits at beginning of year	$ 6,910	$ 8,423	$ 10,557
Gross increases - unrecognized tax benefits in prior periods	5,389	2,466	6
Gross decreases - audit settlement during year	0	(3,979)	0
Gross decreases - expiration of audit statute of limitations	(2,756)	0	(2,140)
Gross liability for unrecognized tax benefits at end of year	$ 9,543	$ 6,910	$ 8,423

EARNINGS PER SHARE - Computatio

EARNINGS PER SHARE - Computation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Numerator
Net income attributable to Wabtec shareholders	$ 34,423	$ 87,739	$ 84,416	$ 88,366	$ 48,948	$ 67,399	$ 72,025	$ 73,889	$ 294,944	$ 262,261	$ 304,887
Less: dividends declared - common shares and non-vested restricted stock									(46,277)	(42,218)	(32,430)
Undistributed earnings									$ 248,667	$ 220,043	$ 272,457
Percentage allocated to common shareholders (as a percent)									99.70%	99.70%	99.70%
Undistributed earnings allocated to common shareholders									$ 247,921	$ 219,383	$ 271,640
Add: dividends declared - common shares									46,173	42,092	32,333
Numerator for basic and diluted earnings per common share									$ 294,094	$ 261,475	$ 303,973
Denominator
Denominator for basic earnings per common share - weighted average shares (in shares)									95,994	95,453	90,359
Assumed conversion of dilutive stock-based compensation plans (in shares)									470	672	782
Denominator for diluted earnings per common shares - adjusted weighted average shares and assumed conversion (in shares)									96,464	96,125	91,141
Net income per common share attributable to Wabtec shareholders
Net income attributable to Wabtec shareholders, basic (in dollars per share)	$ 0.36	$ 0.91	$ 0.88	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.06	$ 2.74	$ 3.37
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.36	$ 0.91	$ 0.87	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.05	$ 2.72	$ 3.34
Basic weighted average common shares outstanding and non rested restricted stock expected to vest (in shares)									96,281	95,740	90,627

EARNINGS PER SHARE - Narrative

EARNINGS PER SHARE - Narrative (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Shares not included in computation of diluted earnings per share	135,000	24,000	20,000

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 25.3	$ 21.3	$ 20.8
Tax benefits related to stock-based compensation plans			6.3	$ 8.9	$ 14.9
Unamortized compensation expense expected to be vested			$ 27.1
Unamortized compensation expense expected to be vested, period for recognition			1 year 3 months 18 days
Risk-free interest rate, year			7 years
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 1.6
Non-Vested Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			7.1
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense			$ 5.1
Incentive Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			3 years
Stock-based compensation expense			$ 10.3
Percentage of incentive stock awards expected to be vested and awarded of stocks granted			81.00%
Incentive Stock Awards | Scenario Forecast
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of incentive stock awards expected to be vested and awarded of stocks granted	107.00%	97.00%
Incentive Stock Awards | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of incentive stock awards expected to be vested and awarded of stocks granted			0.00%
Incentive Stock Awards | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of incentive stock awards expected to be vested and awarded of stocks granted			200.00%
Directors Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued			894,152
Stock-based compensation expense			$ 1.2
Directors Plan | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Plan term, years			10 years
Shares authorized for grants			1,000,000
Award vesting period			3 years
Directors Plan | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			1 year
Shares issued			12,960	16,500	16,972
Directors Plan | Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			1 year
Plan 2,011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant			2,800,836
Plan 2011 | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Plan term, years			10 years
Award vesting period			4 years
Plan 2011 | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			4 years
Plan 2000 | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Plan term, years			10 years
Award vesting period			4 years
Plan 2000 | Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting period			4 years

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2014
Options
Outstanding, beginning of period (in shares)	983,512	1,098,823	1,097,323
Granted (in shares)	82,580	65,522	94,115
Exercised (in shares)	(582,303)	(166,838)	(83,790)
Canceled (in shares)	(17,112)	(13,995)	(8,825)
Outstanding, end of period (in shares)	466,677	983,512	1,098,823
Exercisable at December 31, 2017	283,169
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 32.52	$ 35.39	$ 32.70
Granted (in dollars per share)	77.54	86.91	61.39
Exercised (in dollars per share)	28.29	21.37	25.58
Canceled (in dollars per share)	69.76	76.89	71.47
Outstanding, end of period (in dollars per share)	61.04	$ 32.52	$ 35.39
Exercisable at December 31, 2017 (in dollars per share)	$ 50.60
Weighted Average Remaining Contractual Life
Weighted- Average Remaining Contractual Life, outstanding	5 years 8 months	4 years	4 years 3 months	4 years 9 months
Weighted Average Remaining Contractual Life, Exercisable shares at December 31, 2017	4 years 7 months
Aggregate Intrinsic Value
Outstanding, beginning of period	$ 40,137	$ 52,332	$ 42,154
Granted	0	0	2,035
Exercised	(24,433)	(10,020)	(4,813)
Canceled	(8)	(64)	(102)
Outstanding, end of period	4,298	$ 40,137	$ 52,332
Exercisable at December 31, 2017	$ 5,564

STOCK-BASED COMPENSATION PLAN_4

STOCK-BASED COMPENSATION PLANS - Stock Options Outstanding (Detail)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	466,677
Weighted average exercise price of options outstanding (in dollars per share)	$ 61.04
Number of options currently exercisable (in shares) | shares	283,169
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 50.60
$35.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price, high range (in dollars per share)	$ 35
Number of options outstanding (in shares) | shares	71,765
Weighted average exercise price of options outstanding (in dollars per share)	$ 27.84
Weighted average remaining contractual life (in years)	2 years
Number of options currently exercisable (in shares) | shares	71,765
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 27.84
35.00 - 50.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price, high range (in dollars per share)	35
Exercise price, low range (in dollars per share)	$ 50
Number of options outstanding (in shares) | shares	107,034
Weighted average exercise price of options outstanding (in dollars per share)	$ 41.36
Weighted average remaining contractual life (in years)	3 years 7 months
Number of options currently exercisable (in shares) | shares	107,034
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 41.36
50.00 - 65.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price, high range (in dollars per share)	50
Exercise price, low range (in dollars per share)	$ 65
Number of options outstanding (in shares) | shares	65,199
Weighted average exercise price of options outstanding (in dollars per share)	$ 61.33
Weighted average remaining contractual life (in years)	7 years 1 month
Number of options currently exercisable (in shares) | shares	24,615
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 61.33
65.00 - 80.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price, high range (in dollars per share)	65
Exercise price, low range (in dollars per share)	$ 80
Number of options outstanding (in shares) | shares	98,981
Weighted average exercise price of options outstanding (in dollars per share)	$ 72.21
Weighted average remaining contractual life (in years)	7 years 7 months
Number of options currently exercisable (in shares) | shares	38,187
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 72.85
Over 80
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price, low range (in dollars per share)	$ 80
Number of options outstanding (in shares) | shares	123,698
Weighted average exercise price of options outstanding (in dollars per share)	$ 88.25
Weighted average remaining contractual life (in years)	7 years 6 months
Number of options currently exercisable (in shares) | shares	41,568
Weighted average exercise price of options currently exercisable (in dollars per share)	$ 86.90

STOCK-BASED COMPENSATION PLAN_5

STOCK-BASED COMPENSATION PLANS - Fair Value of Each Option Grant Weighted Average Assumptions (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividend yield (as a percent)	0.31%	0.23%	0.26%
Risk-free interest rate (as a percent)	2.80%	2.20%	1.50%
Stock price volatility (as a percent)	23.90%	23.40%	26.90%
Expected life (years)	5 years	5 years	5 years
Weighted average fair value of options granted during the year (in dollars per share)	$ 20.59	$ 20.69	$ 14.96

STOCK-BASED COMPENSATION PLAN_6

STOCK-BASED COMPENSATION PLANS - Restricted Stock Activity and Incentive Stock Awards Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 78.76	$ 72.18	$ 65.89
Granted (in dollars per share)	73.76	86.66	66.03
Vested (in dollars per share)	81.55	70.34	51.80
Adjustment for incentive stock awards expected to vest (in dollars per share)	74.62	73.69	74.42
Canceled (in dollars per share)	78.60	76.61	71.84
Outstanding, end of period (in dollars per share)	$ 75.51	$ 78.76	$ 72.18
Restricted Stock and Units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	399,000	396,295	356,885
Granted (in shares)	224,060	153,516	212,600
Vested (in shares)	(148,644)	(137,088)	(159,975)
Adjustment for incentive stock awards expected to vest (in shares)	0	0	0
Canceled (in shares)	(29,327)	(13,723)	(13,215)
Outstanding, end of period (in shares)	445,089	399,000	396,295
Incentive Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding, beginning of period (in shares)	327,333	424,750	541,638
Granted (in shares)	175,100	157,025	167,850
Vested (in shares)	(93,312)	(153,271)	(236,591)
Adjustment for incentive stock awards expected to vest (in shares)	32,996	(87,592)	(38,164)
Canceled (in shares)	(26,875)	(13,579)	(9,983)
Outstanding, end of period (in shares)	415,242	327,333	424,750

OTHER COMPREHENSIVE LOSS - Comp

OTHER COMPREHENSIVE LOSS - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Total accumulated other comprehensive loss	$ 2,869,075	$ 2,828,532	$ 2,976,825	$ 1,701,339
Foreign currency translation
Statement of Financial Position [Abstract]
Total accumulated other comprehensive loss	(202,204)	5,063	(321,033)
Derivative contracts
Statement of Financial Position [Abstract]
Total accumulated other comprehensive loss	(53)	4,015	(2,957)
Accumulated other comprehensive income (loss), tax expense (benefit)	16	1,338
Pension and Post Retirement Benefit Plans
Statement of Financial Position [Abstract]
Total accumulated other comprehensive loss	(54,326)	(54,070)	(55,615)
Accumulated other comprehensive income (loss), tax expense (benefit)	(23,049)	(19,532)
Accumulated Other Comprehensive Income (Loss)
Statement of Financial Position [Abstract]
Total accumulated other comprehensive loss	$ (256,583)	$ (44,992)	$ (379,605)	$ (276,719)

OTHER COMPREHENSIVE LOSS - Chan

OTHER COMPREHENSIVE LOSS - Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	$ 2,828,532	$ 2,976,825
Other comprehensive income before reclassifications	(217,389)	331,791
Amounts reclassified from accumulated other comprehensive income	5,798	2,822
Net current period other comprehensive income	(211,591)	334,613
Balance end of period	2,869,075	2,828,532
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	5,063	(321,033)
Other comprehensive income before reclassifications	(207,267)	326,096
Amounts reclassified from accumulated other comprehensive income	0	0
Net current period other comprehensive income	(207,267)	326,096
Balance end of period	(202,204)	5,063
Derivative contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	4,015	(2,957)
Other comprehensive income before reclassifications	(7,803)	6,712
Amounts reclassified from accumulated other comprehensive income	3,735	260
Net current period other comprehensive income	(4,068)	6,972
Balance end of period	(53)	4,015
Pension and Post Retirement Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(54,070)	(55,615)
Other comprehensive income before reclassifications	(2,319)	(1,017)
Amounts reclassified from accumulated other comprehensive income	2,063	2,562
Net current period other comprehensive income	(256)	1,545
Balance end of period	(54,326)	(54,070)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(44,992)	(379,605)
Balance end of period	$ (256,583)	$ (44,992)

OTHER COMPREHENSIVE LOSS - Recl

OTHER COMPREHENSIVE LOSS - Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Interest expense, net									$ (112,235)	$ (77,884)	$ (50,298)
Income tax expense									(75,879)	(89,773)	(99,433)
Net income attributable to Wabtec shareholders	$ 34,423	$ 87,739	$ 84,416	$ 88,366	$ 48,948	$ 67,399	$ 72,025	$ 73,889	294,944	262,261	$ 304,887
Reclassification out of Accumulated Other Comprehensive Income | Amortization of initial net obligation and prior service cost
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Other income, net									(1,501)	(1,496)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of net loss (gain)
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Other income, net									4,327	5,037
Reclassification out of Accumulated Other Comprehensive Income | Pension and Post Retirement Benefit Plans
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Other income, net									2,826	3,541
Income tax expense									(763)	(979)
Net income attributable to Wabtec shareholders									2,063	2,562
Reclassification out of Accumulated Other Comprehensive Income | Derivative contracts
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income On Derivatives [Line Items]
Interest expense, net									4,915	400
Income tax expense									(1,180)	(140)
Net income attributable to Wabtec shareholders									$ 3,735	$ 260

OPERATING LEASES - Narrative (D

OPERATING LEASES - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Leased Assets [Line Items]
Net rental expense	$ 40.1	$ 34.6	$ 27.2
Minimum
Operating Leased Assets [Line Items]
Operating leases term, in years	1 year
Maximum
Operating Leased Assets [Line Items]
Operating leases term, in years	15 years

OPERATING LEASES - Future Minim

OPERATING LEASES - Future Minimum Rental Payments Under Operating Leases (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Future Minimum Payments Under Non-Cancelable Operating Leases With Initial Terms Of One-Year Or More [Line Items]
2,019	$ 36,429
2,020	30,768
2,021	24,649
2,022	18,845
2,023	16,658
2024 and after	63,061
Real Estate
Future Minimum Payments Under Non-Cancelable Operating Leases With Initial Terms Of One-Year Or More [Line Items]
2,019	31,428
2,020	28,132
2,021	22,897
2,022	18,020
2,023	16,267
2024 and after	63,061
Equipment
Future Minimum Payments Under Non-Cancelable Operating Leases With Initial Terms Of One-Year Or More [Line Items]
2,019	5,001
2,020	2,636
2,021	1,752
2,022	825
2,023	391
2024 and after	$ 0

WARRANTIES (Detail)

WARRANTIES (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at beginning of year	$ 153,063	$ 138,992
Warranty expense	57,988	50,385
Acquisitions	3,135	806
Warranty claim payments	(54,111)	(48,548)
Foreign currency impact	(6,373)	11,428
Balance at end of year	$ 153,702	$ 153,063

PREFERRED STOCK (Detail)

PREFERRED STOCK (Detail) - shares	Dec. 31, 2018	Dec. 31, 2017
Disclosure Preferred Stock Additional Information [Abstract]
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Narrative (Details) - Foreign Exchange Forward - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative term (in years)	1 year
Net gain	$ 2.9	$ 2.1
Cash Flow Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Derivative term (in years)	2 years

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING - Summary of Notional Amounts and Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Gross notional amount	$ 1,697,000	$ 1,184,800
Liabilities at fair value		(1,163)
Derivative, Fair Value, Net	(1,000)	5,600
Designated as Hedging Instrument
Derivative [Line Items]
Gross notional amount	863,000	805,100
Derivative, Fair Value, Net	(2,300)	3,500
Not Designated as Hedging Instrument
Derivative [Line Items]
Gross notional amount	834,000	379,700
Derivative, Fair Value, Net	1,300	2,100
Other current assets
Derivative [Line Items]
Derivative asset fair value	1,300	5,600
Other current assets | Designated as Hedging Instrument
Derivative [Line Items]
Derivative asset fair value	0	3,500
Other current assets | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative asset fair value	1,300	2,100
Other current liabilities
Derivative [Line Items]
Liabilities at fair value	(2,300)	0
Other current liabilities | Designated as Hedging Instrument
Derivative [Line Items]
Liabilities at fair value	(2,300)	0
Other current liabilities | Not Designated as Hedging Instrument
Derivative [Line Items]
Liabilities at fair value	$ 0	$ 0

FAIR VALUE MEASUREMENT AND FA_3

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS - Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap agreements	$ 1,163
Liabilities at fair value	1,163
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap agreements	0
Liabilities at fair value	0
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap agreements	1,163
Liabilities at fair value	1,163
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest rate swap agreements	0
Liabilities at fair value	$ 0

FAIR VALUE MEASUREMENT AND FA_4

FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS - Estimated Fair Values and Related Carrying Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 14, 2018	Dec. 31, 2017	Oct. 31, 2016	Aug. 31, 2013
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swap agreements			$ 1,163
Senior Notes | 4.375% Senior Notes, due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.375%		4.375%		4.375%
Senior Notes | 3.45% Senior Notes, due 2026
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	3.45%		3.45%	3.45%
Senior Notes | 4.150% Senior Notes, due 2024
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.15%	4.15%
Senior Notes | 4.70% Senior Notes, due 2028
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.70%	4.70%
Carry Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swap agreements	$ 0		$ 1,163
Carry Value | Senior Notes | 4.375% Senior Notes, due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	248,823		248,567
Carry Value | Senior Notes | 3.45% Senior Notes, due 2026
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	748,282		747,655
Carry Value | Senior Notes | Floating Rate Notes, due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	496,796		0
Carry Value | Senior Notes | 4.150% Senior Notes, due 2024
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	742,957		0
Carry Value | Senior Notes | 4.70% Senior Notes, due 2028
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	1,239,657		0
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swap agreements	0		1,163
Fair Value | Senior Notes | 4.375% Senior Notes, due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	254,218		262,033
Fair Value | Senior Notes | 3.45% Senior Notes, due 2026
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	675,075		741,113
Fair Value | Senior Notes | Floating Rate Notes, due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	497,425		0
Fair Value | Senior Notes | 4.150% Senior Notes, due 2024
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	727,350		0
Fair Value | Senior Notes | 4.70% Senior Notes, due 2028
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	$ 1,179,625		$ 0

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Jan. 31, 2019USD ($)	Sep. 08, 2017USD ($)	Dec. 31, 2018claim
Pending Litigation
Loss Contingencies [Line Items]
Pending litigation cases | claim			0
Denver Transit Installation of Constant Wireless Crossings | Threatened Litigation | Subsidiaries
Loss Contingencies [Line Items]
Alleged damages		$ 36.8
Asbestos Related Cases | Settled Litigation
Loss Contingencies [Line Items]
Arbitration decisions | claim			2
Subsequent Event | Positive Train Control Patents | Siemens Industry, Inc. | Settled Litigation
Loss Contingencies [Line Items]
Damages award to plaintiff	$ 5.6
Subsequent Event | End of Train Patents | Siemens Industry, Inc. | Settled Litigation
Loss Contingencies [Line Items]
Damages award to plaintiff	$ 1.1

SEGMENT INFORMATION - Narrative

SEGMENT INFORMATION - Narrative (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reportable segment | segment	2
United States
Segment Reporting Information [Line Items]
Export sales | $	$ 512.5	$ 448	$ 470.5

SEGMENT INFROMATION - Segment F

SEGMENT INFROMATION - Segment Financial Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Income (loss) from operations	93,456	$ 125,179	$ 123,523	$ 131,279	91,545	$ 101,666	$ 113,356	$ 114,512	473,437	421,079	456,607
Interest expense and other, net									(105,855)	(69,016)	(43,770)
Income (loss) from operations before income taxes									367,582	352,063	412,837
Depreciation and amortization									109,297	103,248	69,795
Capital expenditures									93,305	89,466	50,216
Segment assets	8,649,234				6,579,980				8,649,234	6,579,980	6,581,018
Freight Segment
Segment Reporting Information [Line Items]
Net sales									1,564,297	1,396,588	1,543,098
Transit Segment
Segment Reporting Information [Line Items]
Net sales									2,799,250	2,485,168	1,388,090
Operating Segments | Freight Segment
Segment Reporting Information [Line Items]
Net sales									1,618,525	1,434,218	1,582,617
Income (loss) from operations									304,832	264,276	343,578
Interest expense and other, net									0	0	0
Income (loss) from operations before income taxes									304,832	264,276	343,578
Depreciation and amortization									39,979	43,721	36,519
Capital expenditures									26,568	33,921	22,726
Segment assets	3,774,689				3,504,289				3,774,689	3,504,289	2,949,668
Operating Segments | Transit Segment
Segment Reporting Information [Line Items]
Net sales									2,816,833	2,506,716	1,397,483
Income (loss) from operations									227,939	188,219	170,569
Interest expense and other, net									0	0	0
Income (loss) from operations before income taxes									227,939	188,219	170,569
Depreciation and amortization									64,287	57,441	31,545
Capital expenditures									59,603	50,762	20,987
Segment assets	9,087,026				7,562,122				9,087,026	7,562,122	6,720,302
Corporate Activities and Elimination
Segment Reporting Information [Line Items]
Net sales									(71,811)	(59,178)	(48,912)
Income (loss) from operations									(59,334)	(31,416)	(57,540)
Interest expense and other, net									(105,855)	(69,016)	(43,770)
Income (loss) from operations before income taxes									(165,189)	(100,432)	(101,310)
Depreciation and amortization									5,031	2,086	1,731
Capital expenditures									7,134	4,783	6,503
Segment assets	$ (4,212,481)				$ (4,486,431)				(4,212,481)	(4,486,431)	(3,088,952)
Corporate Activities and Elimination | Freight Segment
Segment Reporting Information [Line Items]
Net sales									54,228	37,630	39,519
Corporate Activities and Elimination | Transit Segment
Segment Reporting Information [Line Items]
Net sales									$ 17,583	$ 21,548	$ 9,393

SEGMENT INFORMATION - Geographi

SEGMENT INFORMATION - Geographic Area Data (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Long-Lived Assets	563,737				573,972				563,737	573,972	518,376
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									1,460,278	1,323,781	1,362,255
Long-Lived Assets	204,279				211,608				204,279	211,608	205,895
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									395,767	356,493	322,563
Long-Lived Assets	54,848				57,668				54,848	57,668	54,215
Germany
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									314,703	208,817	98,364
Long-Lived Assets	75,498				71,709				75,498	71,709	57,902
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									278,979	279,013	206,258
Long-Lived Assets	5,271				5,822				5,271	5,822	5,156
France
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									247,804	237,454	66,287
Long-Lived Assets	56,651				57,849				56,651	57,849	33,636
Mexico
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									200,642	160,029	183,583
Long-Lived Assets	9,184				9,117				9,184	9,117	8,766
Italy
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									189,839	142,037	45,771
Long-Lived Assets	29,806				30,329				29,806	30,329	27,253
India
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									178,491	137,837	24,161
Long-Lived Assets	12,782				12,519				12,782	12,519	1,271
Australia
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									173,539	136,127	82,099
Long-Lived Assets	9,587				10,483				9,587	10,483	8,039
China
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									170,297	178,137	106,357
Long-Lived Assets	33,438				36,388				33,438	36,388	42,672
Brazil
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									67,572	69,378	51,493
Long-Lived Assets	13,490				13,184				13,490	13,184	13,227
Other international
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales									685,636	652,653	381,997
Long-Lived Assets	$ 58,903				$ 57,296				$ 58,903	$ 57,296	$ 60,344

SEGMENT INFORMATION - Sales by

SEGMENT INFORMATION - Sales by Product (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue from External Customer [Line Items]
Total sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Specialty Products & Electronics
Revenue from External Customer [Line Items]
Total sales									1,631,966	1,350,727	1,374,580
Brake Products
Revenue from External Customer [Line Items]
Total sales									885,464	749,959	588,081
Remanufacturing, Overhaul & Build
Revenue from External Customer [Line Items]
Total sales									537,122	522,275	559,284
Transit Products
Revenue from External Customer [Line Items]
Total sales									1,111,549	1,112,340	276,124
Other
Revenue from External Customer [Line Items]
Total sales									$ 197,446	$ 146,455	$ 133,119

GUARANTOR SUBSIDIARIES FINANC_3

GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Cash, cash equivalents, and restricted cash	$ 2,342,354	$ 233,401	$ 1,143,232	$ 429,133
Receivables, net	1,146,778	1,166,787
Inventories	844,886	742,634
Current assets - other	115,649	122,291
Total current assets	4,449,667	2,265,113
Property, plant and equipment	563,737	573,972	518,376
Goodwill	2,396,544	2,460,103
Investment in subsidiaries	0	0
Other intangibles, net	1,129,880	1,204,432
Other noncurrent assets	109,406	76,360
Total Assets	8,649,234	6,579,980	6,581,018
Current liabilities	1,646,690	1,573,330
Inter-company	0	0
Long-term debt	3,792,774	1,823,303
Long-term liabilities - other	340,695	354,815
Total liabilities	5,780,159	3,751,448
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	2,865,131	2,808,868
Noncontrolling interest	3,944	19,664
Total equity	2,869,075	2,828,532	2,976,825	1,701,339
Total Liabilities and Equity	8,649,234	6,579,980
Elimination
Condensed Financial Statements, Captions [Line Items]
Cash, cash equivalents, and restricted cash	0	0	0	0
Receivables, net	0	0
Inventories	0	0
Current assets - other	0	0
Total current assets	0	0
Property, plant and equipment	0	0
Goodwill	0	0
Investment in subsidiaries	(10,730,086)	(8,957,870)
Other intangibles, net	0	0
Other noncurrent assets	0	0
Total Assets	(10,730,086)	(8,957,870)
Current liabilities	0	0
Inter-company	0	0
Long-term debt	0	0
Long-term liabilities - other	0	0
Total liabilities	0	0
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	(10,730,086)	(8,957,870)
Noncontrolling interest	0	0
Total equity	(10,730,086)	(8,957,870)
Total Liabilities and Equity	(10,730,086)	(8,957,870)
Parent | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash, cash equivalents, and restricted cash	1,782,682	933	2,522	0
Receivables, net	106,815	77,046
Inventories	149,622	120,937
Current assets - other	11,884	1,142
Total current assets	2,051,003	200,058
Property, plant and equipment	51,551	52,532
Goodwill	25,275	25,274
Investment in subsidiaries	6,707,979	6,517,205
Other intangibles, net	29,254	30,575
Other noncurrent assets	8,775	17,414
Total Assets	8,873,837	6,843,058
Current liabilities	264,630	196,827
Inter-company	1,947,504	2,121,546
Long-term debt	3,779,627	1,661,771
Long-term liabilities - other	16,945	54,046
Total liabilities	6,008,706	4,034,190
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	2,865,131	2,808,868
Noncontrolling interest	0	0
Total equity	2,865,131	2,808,868
Total Liabilities and Equity	8,873,837	6,843,058
Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash, cash equivalents, and restricted cash	(119)	625	1,226	8,626
Receivables, net	61,513	59,166
Inventories	69,116	46,626
Current assets - other	690	563
Total current assets	131,200	106,980
Property, plant and equipment	24,755	26,492
Goodwill	283,241	283,242
Investment in subsidiaries	4,022,107	2,440,665
Other intangibles, net	78,547	81,037
Other noncurrent assets	149	(23,892)
Total Assets	4,539,999	2,914,524
Current liabilities	91,004	77,284
Inter-company	(1,436,222)	(1,307,410)
Long-term debt	0	14
Long-term liabilities - other	48,714	20,594
Total liabilities	(1,296,504)	(1,209,518)
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	5,836,503	4,124,042
Noncontrolling interest	0	0
Total equity	5,836,503	4,124,042
Total Liabilities and Equity	4,539,999	2,914,524
Non-Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash, cash equivalents, and restricted cash	559,791	231,843	$ 1,139,484	$ 420,507
Receivables, net	978,450	1,030,575
Inventories	626,148	575,071
Current assets - other	103,075	120,586
Total current assets	2,267,464	1,958,075
Property, plant and equipment	487,431	494,948
Goodwill	2,088,028	2,151,587
Investment in subsidiaries	0	0
Other intangibles, net	1,022,079	1,092,820
Other noncurrent assets	100,482	82,838
Total Assets	5,965,484	5,780,268
Current liabilities	1,291,056	1,299,219
Inter-company	(511,282)	(814,136)
Long-term debt	13,147	161,518
Long-term liabilities - other	275,036	280,175
Total liabilities	1,067,957	926,776
Total Westinghouse Air Brake Technologies Corporation shareholders' equity	4,893,583	4,833,828
Noncontrolling interest	3,944	19,664
Total equity	4,897,527	4,853,492
Total Liabilities and Equity	$ 5,965,484	$ 5,780,268

GUARANTOR SUBSIDIARIES FINANC_4

GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION - Income Statement (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
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Cost of sales									(3,129,662)	(2,816,443)	(2,006,949)
Gross profit	297,025	302,012	323,967	310,881	268,440	253,203	273,963	269,707	1,233,885	1,065,313	924,239
Total operating expenses									(760,448)	(644,234)	(467,632)
Income from operations	93,456	125,179	123,523	131,279	91,545	101,666	113,356	114,512	473,437	421,079	456,607
Interest expense, net									(112,235)	(77,884)	(50,298)
Other income, net									6,380	8,868	6,528
Equity earnings (loss)									0	0	0
Income from operations before income taxes									367,582	352,063	412,837
Income tax expense									(75,879)	(89,773)	(99,433)
Net income									291,703	262,290	313,404
Less: Net loss (income) attributable to noncontrolling interest									3,241	(29)	(8,517)
Net income attributable to Wabtec shareholders	$ 34,423	$ 87,739	$ 84,416	$ 88,366	$ 48,948	$ 67,399	$ 72,025	$ 73,889	294,944	262,261	304,887
Comprehensive income attributable to Wabtec shareholders									83,353	596,874	202,001
Elimination
Condensed Financial Statements, Captions [Line Items]
Net sales									(232,775)	(129,325)	(141,950)
Cost of sales									132,250	98,720	98,125
Gross profit									(100,525)	(30,605)	(43,825)
Total operating expenses									0	0	0
Income from operations									(100,525)	(30,605)	(43,825)
Interest expense, net									0	0	0
Other income, net									0	0	0
Equity earnings (loss)									(766,320)	(733,682)	(614,834)
Income from operations before income taxes									(866,845)	(764,287)	(658,659)
Income tax expense									0	0	0
Net income									(866,845)	(764,287)	(658,659)
Less: Net loss (income) attributable to noncontrolling interest									0	0	0
Net income attributable to Wabtec shareholders									(866,845)	(764,287)	(658,659)
Comprehensive income attributable to Wabtec shareholders									(866,845)	(764,287)	(658,659)
Parent | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net sales									671,035	577,397	641,809
Cost of sales									(495,090)	(440,911)	(473,700)
Gross profit									175,945	136,486	168,109
Total operating expenses									(172,978)	(114,199)	(142,817)
Income from operations									2,967	22,287	25,292
Interest expense, net									(110,801)	(76,823)	(38,843)
Other income, net									13,452	10,020	25,254
Equity earnings (loss)									396,944	416,068	322,650
Income from operations before income taxes									302,562	371,552	334,353
Income tax expense									(7,618)	(109,294)	(29,466)
Net income									294,944	262,258	304,887
Less: Net loss (income) attributable to noncontrolling interest									0	0	0
Net income attributable to Wabtec shareholders									294,944	262,258	304,887
Comprehensive income attributable to Wabtec shareholders									295,774	263,907	305,180
Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net sales									483,058	398,220	435,864
Cost of sales									(304,286)	(255,792)	(280,973)
Gross profit									178,772	142,428	154,891
Total operating expenses									(57,274)	(50,902)	(50,361)
Income from operations									121,498	91,526	104,530
Interest expense, net									12,794	10,916	9,294
Other income, net									20	274	(1,689)
Equity earnings (loss)									369,376	317,614	292,184
Income from operations before income taxes									503,688	420,330	404,319
Income tax expense									(3,299)	18,762	(52,308)
Net income									500,389	439,092	352,011
Less: Net loss (income) attributable to noncontrolling interest									0	0	0
Net income attributable to Wabtec shareholders									500,389	439,092	352,011
Comprehensive income attributable to Wabtec shareholders									500,389	439,092	352,011
Non-Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net sales									3,442,229	3,035,464	1,995,465
Cost of sales									(2,462,536)	(2,218,460)	(1,350,401)
Gross profit									979,693	817,004	645,064
Total operating expenses									(530,196)	(479,133)	(274,454)
Income from operations									449,497	337,871	370,610
Interest expense, net									(14,228)	(11,977)	(20,749)
Other income, net									(7,092)	(1,426)	(17,037)
Equity earnings (loss)									0	0	0
Income from operations before income taxes									428,177	324,468	332,824
Income tax expense									(64,962)	759	(17,659)
Net income									363,215	325,227	315,165
Less: Net loss (income) attributable to noncontrolling interest									3,241	(29)	(8,517)
Net income attributable to Wabtec shareholders									366,456	325,198	306,648
Comprehensive income attributable to Wabtec shareholders									$ 154,035	$ 658,162	$ 203,469

GUARANTOR SUBSIDIARIES FINANC_5

GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION - Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ 314,671	$ 188,811	$ 450,530
Net cash used in investing activities	(147,287)	(1,033,474)	(232,966)
Net cash provided by (used in) financing activities	1,978,111	(97,431)	522,971
Effect of changes in currency exchange rates	(36,542)	32,263	(26,436)
Increase (decrease) in cash	2,108,953	(909,831)	714,099
Cash, cash equivalents and restricted cash, beginning of year	233,401	1,143,232	429,133
Cash, cash equivalents and restricted cash, end of year	2,342,354	233,401	1,143,232
Elimination
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(100,525)	(30,605)	(43,825)
Net cash used in investing activities	0	0	0
Net cash provided by (used in) financing activities	100,525	30,605	43,825
Effect of changes in currency exchange rates	0	0	0
Increase (decrease) in cash	0	0	0
Cash, cash equivalents and restricted cash, beginning of year	0	0	0
Cash, cash equivalents and restricted cash, end of year	0	0	0
Parent | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(87,122)	(49,231)	(44,611)
Net cash used in investing activities	(16,808)	(11,156)	(829,783)
Net cash provided by (used in) financing activities	1,885,679	58,798	876,916
Effect of changes in currency exchange rates	0	0	0
Increase (decrease) in cash	1,781,749	(1,589)	2,522
Cash, cash equivalents and restricted cash, beginning of year	933	2,522	0
Cash, cash equivalents and restricted cash, end of year	1,782,682	933	2,522
Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	130,125	130,298	142,839
Net cash used in investing activities	(2,024)	(3,357)	(2,653)
Net cash provided by (used in) financing activities	(128,845)	(127,542)	(147,586)
Effect of changes in currency exchange rates	0	0	0
Increase (decrease) in cash	(744)	(601)	(7,400)
Cash, cash equivalents and restricted cash, beginning of year	625	1,226	8,626
Cash, cash equivalents and restricted cash, end of year	(119)	625	1,226
Non-Guarantors | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	372,193	138,349	396,127
Net cash used in investing activities	(128,455)	(1,018,961)	599,470
Net cash provided by (used in) financing activities	120,752	(59,292)	(250,184)
Effect of changes in currency exchange rates	(36,542)	32,263	(26,436)
Increase (decrease) in cash	327,948	(907,641)	718,977
Cash, cash equivalents and restricted cash, beginning of year	231,843	1,139,484	420,507
Cash, cash equivalents and restricted cash, end of year	$ 559,791	$ 231,843	$ 1,139,484

OTHER INCOME, NET (Detail)

OTHER INCOME, NET (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Foreign currency loss	$ (5,745)	$ (6,618)	$ (4,001)
Equity income	1,931	2,579	409
Expected return on pension assets/amortization	9,047	9,834	9,491
Other miscellaneous (expense) income	1,147	3,073	629
Total other income, net	$ 6,380	$ 8,868	$ 6,528

SELECTED QUARTERLY FINANCIAL _3

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in Accounting Estimate [Line Items]
Net sales	$ 1,117,876	$ 1,077,814	$ 1,111,680	$ 1,056,177	$ 1,075,538	$ 957,931	$ 932,253	$ 916,034	$ 4,363,547	$ 3,881,756	$ 2,931,188
Gross profit	297,025	302,012	323,967	310,881	268,440	253,203	273,963	269,707	1,233,885	1,065,313	924,239
Income from operations	93,456	125,179	123,523	131,279	91,545	101,666	113,356	114,512	473,437	421,079	456,607
Net income attributable to Wabtec shareholders	$ 34,423	$ 87,739	$ 84,416	$ 88,366	$ 48,948	$ 67,399	$ 72,025	$ 73,889	$ 294,944	$ 262,261	$ 304,887
Basic earnings from operations per common share (in dollars per share)	$ 0.36	$ 0.91	$ 0.88	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.06	$ 2.74	$ 3.37
Diluted earnings from operations per common share (in dollars per share)	$ 0.36	$ 0.91	$ 0.87	$ 0.92	$ 0.51	$ 0.70	$ 0.75	$ 0.77	$ 3.05	$ 2.72	$ 3.34
Restatement Adjustment
Change in Accounting Estimate [Line Items]
Income from operations					$ (14,800)

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 12,342	$ 7,340	$ 5,614
Charged/ (credited) to expense	9,458	2,632	3,635
Charged/(credited) to other accounts	(360)	4,979	0
Deductions from reserves	4,513	2,609	1,909
Balance at end of period	16,927	12,342	7,340
Valuation allowance-taxes
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	25,683	21,418	12,623
Charged/ (credited) to expense	27,410	4,265	3,405
Charged/(credited) to other accounts	0	0	5,390
Deductions from reserves	11,314	0	0
Balance at end of period	$ 41,779	$ 25,683	$ 21,418