Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 M	Dec. 31, 2010	Dec. 31, 2009
Income Taxes (Textual) [Abstract]
Net Short term deferred tax assets included in prepaid expense and other	$ 11	$ 50
Net long term deferred tax liability included in deferred income taxes	250	397
Non-cash charge to income tax expense due to change in deferred tax assets valuation allowance	31
Deferred tax assets expected to be realized	more than 50 percent
Increase in tax expense from Repatriation Of Foreign Earnings	89	372
Deferred tax assets, with no valuation allowance	156	228
Net operating loss and tax credit carryforwards Expiring between 2020 and 2031	269	143
Net operating loss and tax credit carryforwards with Unlimited Expiration period	11	5
Deferred tax assets on additional net operating losses	13
Net operating loss and tax credit carryforwards With Limited Expiration period Expiration Dates	between 2020 and 2031	between 2020 and 2031
Deferred tax liabilities on the undistributed earnings of certain foreign subsidiaries	74
Reversed accrual adjustment for unrecognized tax benefits related to withholding tax issue	10
Income taxes paid	43	47	25
Unrecognized tax benefits that would impact effective tax rate if recognized	40	47
Unrecognized tax benefits recorded in deferred income taxes and other	86	97
Unrecognized tax benefits recorded in accrued liabilities	1	5
Unrecognized tax benefits recorded in other assets	6	8
Time limits for tax audit closings, settlements and expiration of applicable statutes of limitations in various jurisdictions	12
Reduction in the liability for unrecognized tax benefits	$ 10