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Basis of Presentation and Principles of Consolidation - Tax Matters (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended | 51 Months Ended
--- | --- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2017
Income Tax Examination [Line Items] |  |  |  |
Income tax provision | $ 48 | $ 63 |  |
Effective tax rate | 22.10% | 32.30% |  |
Income tax provision, percentage change | (23.80%) |  |  | (23.80%)
Effective tax rate, percentage change | (10.20%) |  |  | (10.20%)
SE | Foreign Tax Authority |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Cumulative tax benefits recorded |  |  |  | $ 51
Tax expense if courts disagree with our position | $ 40 |  |  | $ 40
Tax expense (benefits), per diluted share (in dollars per share) | $ 0.24 |  |  | $ 0.24
Increase in tax expense related to receivable under tax sharing agreement |  |  | $ 12 |
SE | Foreign Tax Authority | Minimum |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Recurring tax benefits | $ 1 |  |  |
SE | Foreign Tax Authority | Maximum |  |  |  |
Income Tax Examination [Line Items] |  |  |  |
Recurring tax benefits | $ 2 |  |  |

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