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Income Taxes (Details) (USD $)
3 Months Ended9 Months Ended12 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
Mar. 31, 2010
Sep. 30, 2011
Sep. 30, 2010
Dec. 31, 2010
Provision for income taxes$ (110,000,000) $ (14,000,000)$ 265,000,000$ (347,000,000)$ (142,000,000) 
Effective tax rate11.90% 1.80% 13.00%5.30% 
Statutory U.S. income tax (benefit) rate35.00% 35.00%    
Contingent liability reduction(22,000,000)   (22,000,000)  
Tax benefit from amending 2006 United States Federal return41,000,000      
Effective income tax rate reconciliation decrease from discrete items4.10% 0.60% 1.40%  
Effective income tax rate reconciliation increase from discrete items     2.50% 
Foreign earnings repatriated 1,100,000,000     
Accumulated foreign unremitted earnings      8,900,000,000
Tax holiday impact2.30% 2.80% 1.70%3.20% 
Content of unremitted foreign earnings      70.00%
Additional capacity of investment  800,000,000    
Discrete Items [Member]
       
Contingent liability reduction22,000,000      
Loss from early redemption of debt  30,000,000    
Tax benefit from amending 2006 United States Federal return41,000,000      
Charge from reversal of deferred tax asset regarding subsidy for certain retiree medical benefits     56,000,000 
Maximum [Member]
       
Multi-year international capital investment plan    2,700,000,000  
Minimum [Member]
       
Multi-year international capital investment plan    $ 2,400,000,000