CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Net income attributable to Wabtec shareholders	$ 69,613	$ 59,261
Foreign currency translation (loss) gain	(27,941)	10,901
Unrealized (loss) gain on interest rate swap contracts	(57)	217
Pension benefit plans and post retirement benefit plans	3,102	366
Other comprehensive income before tax	(24,896)	11,484
Income tax expense related to components of other comprehensive income	(844)	(259)
Other comprehensive income, net of tax	(25,740)	11,225
Comprehensive income attributable to Wabtec shareholders	$ 43,873	$ 70,486

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Before tax amount of other comprehensive income (loss) attributable to the parent entity.

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- Definition

Before tax and net of reclassification adjustments of the change in the balance sheet adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency of the reporting entity. Also includes the following: gain (loss) on foreign currency forward exchange contracts; foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; and gain (loss) on a derivative instrument or nonderivative financial instrument that may give rise to a foreign currency transaction gain (loss) that has been designated and qualified as a hedging instrument for hedging of the foreign currency exposure of a net investment in a foreign operation.

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- Definition

Tax effect of other comprehensive income (loss) attributable to both parent entity and noncontrolling interest.

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- Definition

Before tax amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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