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Income Taxes (Income Tax Expense (Benefit)) (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Income Tax Contingency [Line Items] | ||||
| Income tax (expense) benefit | $ (9,000,000) | $ (110,000,000) | $ (5,000,000) | $ (12,000,000) |
| Effective Income Tax Rate, Continuing Operations | 1.00% | 26.00% | 1.00% | 10.00% |
| Unrecognized Tax Benefits | 66,000,000 | 66,000,000 | ||
| Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 16,000,000 | 16,000,000 | ||
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 13,000,000 | 13,000,000 | ||
| Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound | 0 | 0 | ||
| Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound | 11,000,000 | 11,000,000 | ||
| Unrecognized Tax Benefit Related to Deferred Tax Asset | $ 50,000,000 | $ 50,000,000 | ||
| X | ||||||||||
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- Definition
Unrecognized Tax Benefit Related to Deferred Tax Asset No definition available.
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| X | ||||||||||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of (increase) decrease reasonably possible in the estimated lower bound of the unrecognized tax benefit for a tax position taken or expected to be taken. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of (increase) decrease reasonably possible in the estimated upper bound of the unrecognized tax benefit for a tax position taken or expected to be taken. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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