Income Taxes Income Taxes Textuals (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes (Textuals) [Line Items]
Unrecognized tax benefits that would impact effective tax rate	$ 184,000,000
Income Taxes [Abstract]
Effective Tax Rate For Income Tax Expense With Out One Time Charges	12.90%	9.50%
Undistributed earnings of non-United States subsidiaries where no provision has been made	6,400,000,000
Income tax expense (benefit)	201,000,000	99,000,000	(82,000,000)
IRS Statutory Notice of Deficiency proposed assessment of additional taxes	75,000,000
Penalties associated with IRS Statutory Notice of Deficiency proposed assessment	52,000,000
Deferred Income Tax Assets and Liabilities [Abstract]
US federal deferred income tax assets	1,600,000,000
Recoverability of Deferred Income Tax Assets [Abstract]
Taxable income In carryforward period	4,600,000,000
Exceptions related to realization of deferred income tax assets	23,000,000
Number of years of cumulative pretax income in a particular jurisdiction to determine deferred tax assets will not be recognized	three
Number of years of cumulative pretax losses in particular jurisdiction to determine if deferred tax assets can be recognized	three
Percent reduction in assessed penalties by Brazilian tax authorities	50.00%
Number of years estimated to resolve Brazilian tax assessment	10
Carryforward period for net operating losses and general business credits	20
Income tax examination, penalties and interest accrued	$ 29,000,000	$ 36,000,000