Basis of Presentation (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended |
|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2015 |
Dec. 31, 2014 |
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| Basis of Presentation | |||
| Related Party Transaction, Amounts of Transaction | $ 1 | $ 1 | |
| New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification | $ 2 |
| X | ||||||||||
- Definition Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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