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Earnings Per Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Numerator:        
Net earnings attributable to the Company (in dollars) $ 133 $ 73 $ 254 $ 155
Denominator (in thousands):        
Denominator for basic earnings per share - weighted average shares outstanding (in shares) 164,799,000 163,633,000 164,520,000 163,494,000
Effect of dilutive securities:        
Stock options and other (in shares) 1,131,000 2,638,000 1,542,000 2,699,000
Denominator for diluted earnings per share - adjusted weighted average shares (in shares) 165,930,000 166,271,000 166,062,000 166,193,000
Basic earnings per share:        
Earnings from continuing operations (in dollars per share) $ 0.82 $ 0.43 $ 1.56 $ 0.93
Earnings (loss) from discontinued operations (in dollars per share) $ (0.01) $ 0.01 $ (0.02) $ 0.01
Net earnings (in dollars per share) $ 0.81 $ 0.44 $ 1.54 $ 0.94
Diluted earnings per share:        
Diluted earnings per share (in dollars per share) $ 0.81 $ 0.42 $ 1.54 $ 0.92
Earnings (loss) from discontinued operations (in dollars per share) $ (0.01) $ 0.01 $ (0.02) $ 0.01
Net earnings (in dollars per share) $ 0.80 $ 0.43 $ 1.52 $ 0.93
Weighted average shares of common stock attributable to options not included in diluted earnings per share (in shares) 2,118,603 1,338,432 1,908,925 1,147,767
Exchange price of 2015 exchangeable notes (in dollars per share) $ 47.47   $ 47.47