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Consolidated Statements Of Stockholders' Equity (USD $)
In Thousands, unless otherwise specified
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income [Member]
Preferred Stock [Member]
Common Stock [Member]
Paid-In Capital [Member]
Common Stock Held In Treasury, At Cost [Member]
Noncontrolling Interest [Member]
Total
Balance at Dec. 31, 2010 $ (4,042,335) $ 291,774    $ 3,080 $ 2,187,485 $ (448,540) $ 654,308 $ (1,354,228)
Comprehensive loss:                
Net income (loss) (819,279)            33 (819,246)
Other comprehensive loss, net of tax   79,461          44 79,505
Stock-based compensation (37,157)        108     (37,049)
Cost of shares acquired            (35)   (35)
Shares issued under equity plans            37,156   37,156
Balance at Mar. 31, 2011 (4,898,771) 371,325    3,080 2,187,593 (411,419) 654,385 (2,093,897)
Balance at Dec. 31, 2011 (6,039,922) 463,259    3,080 2,172,027 (411,419) 663,442 (3,149,533)
Comprehensive loss:                
Net income (loss) 253,320            2 253,322
Other comprehensive loss, net of tax   (17,462)          31 (17,431)
Stock-based compensation (338)              (338)
Shares issued under equity plans            338   338
Balance at Mar. 31, 2012 $ (5,786,940) $ 445,797    $ 3,080 $ 2,172,027 $ (411,081) $ 663,475 $ (2,913,642)