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Income Taxes (Details) (USD $)
In Millions
Sep. 30, 2011
Jul. 01, 2011
Dec. 31, 2010
Income Taxes (Textuals)   
Reversal of provision for income taxes $ 12 
Anticipated decrease in unrecognized tax benefits over the next 12 months (approximately)97  
Accrued potential interest included within non-current income taxes payable24 22
Accrued potential interest included within non-current income taxes payable, after income taxes14 13
Potential penalties$ 13 $ 13