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Earnings Per Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Numerator:      
Net earnings (loss) attributable to the Company (in dollars) $ (510) $ (47) $ 162
Net earnings attributable to participating securities (in dollars)     (1)
Numerator for basic earnings per share - income available to common share owners (in dollars) $ (510) $ (47) $ 161
Denominator (in thousands):      
Denominator for basic earnings per share - weighted average shares outstanding (in shares) 163,691,000 164,271,000 167,687,000
Effect of dilutive securities:      
Stock options and other (in shares)   2,807,000 2,853,000
Denominator for diluted earnings per share - adjusted weighted average shares (in shares) 163,691,000 167,078,000 170,540,000
Basic earnings per share:      
Earnings from continuing operations (in dollars per share) $ (3.12) $ 1.57 $ 0.65
Earnings from discontinued operations (in dollars per share)   $ 0.14 $ 0.31
Gain (loss) on disposal of discontinued operations (in dollars per share) $ 0.01 $ (2.00)  
Net earnings (loss) (in dollars per share) $ (3.11) $ (0.29) $ 0.96
Diluted earnings per share:      
Earnings from continuing operations (in dollars per share) $ (3.12) $ 1.55 $ 0.65
Earnings from discontinued operations (in dollars per share)   $ 0.14 $ 0.30
Gain (loss) on disposal of discontinued operations (in dollars per share) $ 0.01 $ (1.97)  
Net earnings (loss) (in dollars per share) $ (3.11) $ (0.28) $ 0.95
Weighted average shares of common stock attributable to options not included in diluted earnings per share (in shares)   687,353 994,834
Exchange price of 2015 exchangeable notes (in dollars per share) $ 47.47