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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
A reconciliation of the provision (benefit) for income taxes      
Statutory U.S. Federal tax rate (as a percent) 35.00%    
Increase (decrease) in provision for income taxes due to:      
Tax provision on pretax earnings (loss) from continuing operations at statutory U.S. Federal tax rate $ 117 $ 115 $ (139)
Differences in income taxes on foreign earnings, losses and remittances (29) (5) (13)
Goodwill Impairment     224
Changes in valuation allowance 37 (7) 15
Tax audits and settlements 1 (1) 3
Other items (6) 6 (5)
Provision for income taxes $ 120 $ 108 $ 85