Income Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
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| Income Taxes | |||||
| Effective tax rate (as a percent) | 20.00% | 13.00% | 30.00% | (50.00%) | |
| Deferred tax assets on operating loss carryforwards | $ 434 | ||||
| Deferred tax assets on net operating loss carryforwards, not expected to be utilized | $ 32 | ||||
| X | ||||||||||
- Definition Represents the amount of the deferred tax assets relating to operating loss carryforwards not expected to be utilized. No definition available.
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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 | ||||||||||
- References No definition available.
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