Other Expenses and Charges - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Restructuring Cost and Reserve [Line Items] | ||
| Restructuring | $ 0 | $ 13 |
| Transaction-related, net | 0 | 8 |
| Separation-Related Charges | 2 | 1 |
| Separation-related expenses | $ 2 | 1 |
| Hotel Franchising | ||
| Restructuring Cost and Reserve [Line Items] | ||
| Restructuring | $ 7 | |
| X | ||||||||||
- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Separation-Related Charges No definition available.
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| X | ||||||||||
- Definition Transaction Related Costs No definition available.
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| X | ||||||||||
- Details
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