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Condensed Consolidated Statements Of Operations (Parenthetical) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Income (Loss) from Discontinued Operations, tax (expense) benefit$ (15)$ (11)$ (51)$ (10)
Power [Member]
    
Income (Loss) from Discontinued Operations, tax (expense) benefit$ (15)$ (11)$ (51)$ (10)