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Discontinued Operations (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Discontinued Operations and Disposal Groups [Abstract]    
Sales from discontinued operations $ 27 $ 83
Operating profit from discontinued operations 1 7
Income from discontinued operations before income taxes $ 1 $ 7