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Condensed Consolidated Statements Of Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]    
Income tax effect related to hedge derivative contract settlements reclassified into earnings from accumulated other comprehensive income $ (8,455) $ (17,833)
Income tax effect related to net change in derivative fair value $ 0 $ 0