CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Activities
Net income attributable to Wabtec shareholders	$ 94,163	$ 96,164
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization	16,232	15,569
Stock-based compensation expense	5,510	8,763
Loss on disposal of property, plant and equipment	18	147
Excess income tax benefits from exercise of stock options	0	(314)
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable and unbilled accounts receivable	(23,844)	(39,502)
Inventories	1,400	(18,541)
Accounts payable	(18,002)	(12,931)
Accrued income taxes	29,779	24,581
Accrued liabilities and customer deposits	(12,832)	(16,468)
Other assets and liabilities	(16,858)	(13,807)
Net cash provided by operating activities	75,566	43,661
Investing Activities
Purchase of property, plant and equipment	(8,504)	(8,458)
Proceeds from disposal of property, plant and equipment	84	138
Acquisitions of businesses, net of cash acquired	(210)	(75,713)
Net cash used for investing activities	(8,630)	(84,033)
Financing Activities
Proceeds from debt	195,000	111,700
Payments of debt	(85,453)	(211,847)
Purchase of treasury stock	(133,738)	0
Proceeds from exercise of stock options and other benefit plans	515	397
Excess income tax benefits from exercise of stock options	0	314
Payment of income tax withholding on share-based compensation	(9,006)	(14,565)
Cash dividends	(7,355)	(5,780)
Net cash used for financing activities	(40,037)	(119,781)
Effect of changes in currency exchange rates	9,684	(16,561)
Increase (Decrease) in cash	36,583	(176,714)
Cash, beginning of period	226,191	425,849
Cash, end of period	$ 262,774	$ 249,135