The tax effect as of the balance sheet date of the amount of excess of tax deductions over gross income in a year which cannot be used on the tax return of the country of domicile in the current year but can be carried forward to reduce taxable income or income taxes payable in a future year, for which there must be sufficient tax-basis income to utilize a portion or all of the carryforward amount to realize the deferred tax asset.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income Taxes (Textuals) [Abstract]
Income tax expense	$ 30	$ 15	$ 44	$ 30
U.S. federal statutory rate			35.00%
Change in valuation allowance related to NOL's			11
Deferred tax assets related to NOL's	$ 90		$ 90
Federal [Member]
Income Taxes (Additional Textuals) [Abstract]
NOL's expiration period			tax years ending in 2020 through 2029
State [Member]
Income Taxes (Additional Textuals) [Abstract]
NOL's expiration period			tax years ending through 2029