CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income attributable to Wabtec shareholders	$ 251,732	$ 170,149	$ 123,099
Foreign currency translation gain (loss)	14,428	(12,714)	(2,633)
Unrealized gain (loss) on foreign exchange contracts		191	(82)
Unrealized (loss) gain on interest rate swap contracts	(2,628)	1,096	(2,475)
Pension benefit plans and post-retirement benefit plans	(6,292)	(16,420)	(5,158)
Comprehensive income before income taxes	257,240	142,302	112,751
Income tax benefit related to components of other comprehensive income	1,825	5,027	2,817
Comprehensive income attributable to Wabtec shareholders	$ 259,065	$ 147,329	$ 115,568