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RELATED-PARTY TRANSACTIONS - Equity Method Investments Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Feb. 28, 2024 | Feb. 27, 2024
Related Party Transaction |  |  |  |  |  |  |
Net receivables | $ 930 |  | $ 930 |  | $ 1,121 |  |
Total long-term financing receivables, net of allowances | $ 459 |  | $ 459 |  | 368 |  |
Unconsolidated Hospitality Ventures |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  | 38.80% | 50.00%
Minimum | Unconsolidated Hospitality Ventures |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Equity method investment, ownership percentage | 20.00% |  | 20.00% |  |  |  |
Maximum | Unconsolidated Hospitality Ventures |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Equity method investment, ownership percentage | 50.00% |  | 50.00% |  |  |  |
Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Net financing receivables | $ 152 |  | $ 152 |  | 112 |  |
Net receivables | 36 |  | 36 |  | 67 |  |
Total long-term financing receivables, net of allowances | 116 |  | 116 |  | $ 45 |  |
Interest income, operating | 2 | $ 1 | 5 | $ 3 |  |  |
Franchise or License Fees | Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Related party amounts | 23 | 22 | $ 71 | $ 61 |  |  |
Related Parties Guarantees | Related Party |  |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |  |
Related party amounts | $ 0 | $ 0 |  |  |  |  |

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