Income Taxes (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Income Taxes (Textuals) [Abstract]
Tax expenses	$ 64	$ 43	$ 126	$ 96
Income before income taxes	120	82	306	111
Income Tax Reconciliation, Tax Contingencies			18	(4)
Unrecognized tax benefits, if recognized, would have a favorable impact on our tax expense					87
Tax expense, that would have a favorable impact of Unrecognized tax benefits					81
Accrued interest					13
Unsettled unrecognized tax benefits that would require cash					23
Unsettled accrued interest that would require cash					$ 13
Change in unrecognized tax benefits during the next 12 months			It is reasonably possible that our unrecognized tax benefits may change during the next 12 months. However, we do not expect changes during the next 12 months to have a significant impact on our financial position or results of operations
Effective income tax rate reconciliation, valuation allowance			We continue to maintain a full valuation allowance against our net Federal and state deferred tax assets, however this did not have a significant impact on the consolidated effective tax rate for the first six months of 2011 due to the near break-even results income before income taxes in the U.S. For the first six months of 2010, the difference between our effective tax rate and the U.S statutory rate was primarily attributable to maintaining a full valuation allowance against our net Federal and state deferred tax assets
Open tax years by major tax jurisdiction			Generally, years beginning after 2004 are still open to examination by foreign taxing authorities, and in Germany, we are open to examination from 2006 onward. In the United States, we are open to examination from 2010 onward.