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Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data
3 Months Ended9 Months Ended12 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2010
Earnings Per Share [Abstract]     
Net income / (loss) from continuing operations, net of noncontrolling interests in subsidiaries$ (839,850)$ 68,879$ (835,715)$ 10,314 
Income / (loss) on discontinued operations031,0170(11,778) 
Net income / (loss)$ (839,850)$ 99,896$ (835,715)$ (1,464)$ (104,667)
Weighted average shares of common stock outstanding (used to calculate basic EPS)72,49070,43272,06369,925 
Net effect of dilutive employee stock options based on the treasury stock method2618355270 
Weighted average shares of common stock outstanding (used to calculate diluted EPS)72,51670,61572,11870,195 
Net income / (loss) per common share - basic:     
Continuing operations$ (11.59)$ 0.98$ (11.60)$ 0.15 
Discontinued operations$ 0.00$ 0.44$ 0.00$ (0.17) 
Net income / (loss) per common share - basic$ (11.59)$ 1.42$ (11.60)$ (0.02) 
Net income / (loss) per common share - diluted:     
Continuing operations$ (11.59)$ 0.98$ (11.60)$ 0.15 
Discontinued operations$ 0.00$ 0.43$ 0.00$ (0.17) 
Net income / (loss) per common share - diluted$ (11.59)$ 1.41$ (11.60)$ (0.02)