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Income Taxes (Schedule Of Provision For Income Tax Benefit (Expense) (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Expense Benefit [Abstract]                      
Current - Federal                 $ (503) $ 10,586 $ 61,655
Current - foreign                 (27,256) (48,466) (48,579)
Current - state                 3,193 1,527 (9,408)
Total current benefit (expense)                 (24,566) (36,353) 3,668
Deferred - Federal                 (29,284) 126,905 261,014
Deferred - foreign                 4,308 8,932 27,970
Deferred - state                 (8,947) 22,333 15,627
Total deferred benefit (expense)                 (33,923) 158,170 304,611
Income tax benefit (expense) $ 33,654 $ (24,376) $ 621 $ (68,388) $ (36,833) $ 73,802 $ (11,477) $ 96,325 $ (58,489) $ 121,817 $ 308,279