v2.4.0.6
Income Taxes Components of current and long-term deferred income taxes (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deferred Tax Assets and Liabilities [Line Items]    
Deferred tax liabilities included in other current liabilities $ 49  
Current Assets and Liabilities [Member]
    
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals [Abstract]    
Employee benefits 92 114
Depreciation and amortization (100) (2)
Other accruals and adjustments 476 293
Deferred Tax Assets, Net, Classification [Abstract]    
Other items 0 0
United States federal income tax loss carryforwards 0 0
United States federal income tax credit carryforward 0 0
United States state and local tax loss carryforwards and tax credit carryforwards 0 0
Non-United States tax loss carryforward 0 0
Non-United States income tax credit carryforwards 0 0
Valuation allowance for income tax loss and income tax credit carryforwards (61) 0
Other valuation allowance (7) (7)
Total deferred income taxes 400 398
Long-term assets and liabilities [Member]
    
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals [Abstract]    
Employee benefits 852 778
Depreciation and amortization (2,356) (498)
Other accruals and adjustments 290 77
Deferred Tax Assets, Net, Classification [Abstract]    
Other items 145 (4)
United States federal income tax loss carryforwards 6 7
United States federal income tax credit carryforward 156 251
United States state and local tax loss carryforwards and tax credit carryforwards 71 65
Non-United States tax loss carryforward 1,591 417
Non-United States income tax credit carryforwards 67 95
Valuation allowance for income tax loss and income tax credit carryforwards (1,521) (441)
Other valuation allowance (71) (55)
Total deferred income taxes $ (770) $ 692