Intangible Assets (Change in Goodwill) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Goodwill [Roll Forward] | ||
| Goodwill, Beginning | $ 1,525 | $ 1,525 |
| Goodwill, Other Increase (Decrease) | 0 | 0 |
| Goodwill, Ending | 1,525 | 1,525 |
| Hotel Franchising | ||
| Goodwill [Roll Forward] | ||
| Goodwill, Beginning | 1,441 | |
| Goodwill, Other Increase (Decrease) | 0 | 0 |
| Goodwill, Ending | 1,441 | |
| Hotel Management | ||
| Goodwill [Roll Forward] | ||
| Goodwill, Beginning | 84 | |
| Goodwill, Other Increase (Decrease) | 0 | $ 0 |
| Goodwill, Ending | $ 84 | |
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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://www.xbrl.org/2009/role/commonPracticeRef
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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://www.xbrl.org/2003/role/disclosureRef
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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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