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RELATED-PARTY TRANSACTIONS - Equity Method Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Feb. 28, 2024	Feb. 27, 2024
Related Party Transaction
Net receivables	$ 1,239		$ 1,121
Total long-term financing receivables, net of allowances	$ 359		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%
Maximum | Unconsolidated Hospitality Ventures
Related Party Transaction
Equity method investment, ownership percentage	50.00%
Related Party
Related Party Transaction
Net financing receivables	$ 124		112
Net receivables	91		67
Total long-term financing receivables, net of allowances	33		$ 45
Franchise or License Fees | Related Party
Related Party Transaction
Related party amounts	$ 24	$ 15

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