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Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Income Tax Contingency [Line Items]        
Net deferred tax liabilities $ 2,066 $ 2,336 $ 2,091  
Operating loss carryforward potential benefit 14 10 7  
Increase in unrecognized tax benefits associated with foreign tax position 13 82    
Increase in balance of unrecognized tax benefits associated with reduction in tax 9 1 10  
Income Taxes (Textual) [Abstract]        
Unrecognized tax benefit 131 118 58 61
Deferred tax asset unrecognized tax benefits   73    
Unrecognized tax benefits decreases resulting from settlements with taxing authorities and from lapse of applicable statute of limitations   9    
Net increase in the balance of unrecognized tax benefit 13      
Unrecognized tax benefits period increase decrease recorded as increase in goodwill 10      
Unrecognized Tax Benefits Period Increase Decrease Recorded as Reduction in income tax expense 131      
Reduction in income tax expense if unrecognized tax benefit accrued were realized 1      
Accrued income tax interest and penalties related to unrecognized tax benefit 8      
Foreign tax credit 106      
Excess foreign tax credit, valuation allowance 1      
Undistributed earnings of foreign subsidiaries 2,503 3,789    
Current income tax expense 1,289 903 909  
Foreign Country [Member]
        
Income Tax Contingency [Line Items]        
Income tax interest and penalties related to unrecognized tax benefit 6      
Net operating loss carryforward 34      
Operating loss carryforward potential benefit 7      
Operating loss carryforward valuation allowance 5      
Increase in unrecognized tax benefits associated with foreign tax position   73    
Increase in balance of unrecognized tax benefits associated with reduction in tax 10      
Domestic Country [Member]
        
Income Tax Contingency [Line Items]        
Income tax interest and penalties related to unrecognized tax benefit 7      
Net operating loss carryforward 20      
Operating loss carryforward potential benefit 7      
Operating loss carryforward valuation allowance 7      
Grant Predico Inc [Member]
        
Income Tax Contingency [Line Items]        
Net deferred tax liabilities $ 88