OTHER ASSETS - Schedule of Other Assets (Details) - USD ($) $ in Millions |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Other Assets, Noncurrent [Abstract] | ||
| Management and hotel services agreement and franchise agreement assets constituting payments to customers | $ 962 | $ 896 |
| Marketable securities held to fund the loyalty program (Note 4) | 622 | 495 |
| Marketable securities held to fund rabbi trusts (Note 4) | 547 | 489 |
| Long-term investments (Note 4) | 332 | 96 |
| Common shares in Playa N.V. (Note 4) | 94 | 105 |
| Marketable securities held for captive insurance company (Note 4) | 77 | 86 |
| Deferred costs related to the paid membership program | 0 | 194 |
| Other | 119 | 116 |
| Total other assets | $ 2,753 | $ 2,477 |