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Comprehensive Income (Loss) and Shareholders' (Deficit) Equity - Amounts Reclassified out of Accumulated Other Comprehensive (Loss) Income (Details) (USD $) In Millions, unless otherwise specified
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3 Months Ended |
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Mar. 31, 2015
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Mar. 31, 2014
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Gains and other income |
$ 0 |
$ 0 |
| Interest expense |
(36) |
(30) |
| Income before income taxes |
307 |
231 |
| Provision for income taxes |
100 |
59 |
| NET INCOME |
207 |
172 |
| Foreign Currency Translation Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Income before income taxes |
(3) |
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| Provision for income taxes |
0 |
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| NET INCOME |
(3) |
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| Other Derivative Instrument Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Income before income taxes |
5 |
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| Provision for income taxes |
0 |
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| NET INCOME |
5 |
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| Interest rate contracts | Other Derivative Instrument Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Interest expense |
(1) |
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| Cash flow hedges | Other Derivative Instrument Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Base management and franchise fees |
3 |
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| Net investment hedging | Foreign Currency Translation Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Gains and other income |
(3) |
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| Net investment hedging | Other Derivative Instrument Adjustments | Reclassification of Gains (Losses) from Accumulated Other Comprehensive Loss |
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| Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] |
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| Gains and other income |
$ 3 |
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