Intangible Assets (Change in Goodwill) (Details) - USD ($) $ in Millions |
1 Months Ended | 12 Months Ended | |
|---|---|---|---|
May 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Goodwill [Line Items] | |||
| Goodwill, Acquired During Period | $ 1,127 | ||
| Goodwill [Roll Forward] | |||
| Goodwill, Beginning | $ 1,547 | 423 | |
| Goodwill, Ending | 1,539 | 1,547 | |
| Goodwill, Other Increase (Decrease) | 8 | 3 | |
| Hotel Franchising | |||
| Goodwill [Line Items] | |||
| Goodwill, Acquired During Period | 1,067 | ||
| Goodwill [Roll Forward] | |||
| Goodwill, Beginning | 1,449 | 385 | |
| Goodwill, Ending | 1,441 | 1,449 | |
| Goodwill, Other Increase (Decrease) | 8 | 3 | |
| Hotel Management | |||
| Goodwill [Line Items] | |||
| Goodwill, Acquired During Period | 60 | ||
| Goodwill [Roll Forward] | |||
| Goodwill, Beginning | 98 | 38 | |
| Goodwill, Ending | 98 | 98 | |
| Goodwill, Other Increase (Decrease) | $ 0 | $ 0 | |
| Knights Inn | |||
| Goodwill [Roll Forward] | |||
| Cash proceeds from sale of hotel brand | $ 2 | ||
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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