CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities
Net income attributable to Wabtec shareholders	$ 69,613	$ 59,261
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization	11,170	10,199
Stock-based compensation expense	5,560	5,045
Loss on disposal of property, plant and equipment	32	226
Excess income tax benefits from exercise of stock options	(1,292)	(707)
Changes in operating assets and liabilities, net of acquisitions
Accounts receivable	(42,534)	(47,437)
Inventories	(13,206)	(20,461)
Accounts payable	14,960	(10,392)
Accrued income taxes	9,555	6,842
Accrued liabilities and customer deposits	(15,036)	7,877
Other assets and liabilities	(6,782)	(9,472)
Net cash provided by operating activities	32,040	981
Investing Activities
Purchase of property, plant and equipment	(6,448)	(10,191)
Proceeds from disposal of property, plant and equipment	718	93
Acquisitions of business, net of cash acquired	(115,071)
Net cash used for investing activities	(120,801)	(10,098)
Financing Activities
Proceeds from debt	203,900	78,100
Payments of debt	(104,228)	(88,099)
Proceeds from exercise of stock options and other benefit plans	1,589	1,006
Excess income tax benefits from exercise of stock options	1,292	707
Cash dividends ($0.05 and $0.03 per share for the three months ended March 31, 2013 and 2012, respectively)	(2,386)	(1,438)
Net cash provided by (used for) financing activities	100,167	(9,724)
Effect of changes in currency exchange rates	(1,834)	2,530
Increase (decrease) in cash	9,572	(16,311)
Cash, beginning of year	215,766	285,615
Cash, end of period	$ 225,338	$ 269,304