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RELATED-PARTY TRANSACTIONS - Equity Method Investments Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Feb. 28, 2024	Feb. 27, 2024
Related Party Transaction
Net receivables	$ 982		$ 982		$ 1,121
Total long-term financing receivables, net of allowances	$ 438		$ 438		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	$ 142		$ 142		112
Net receivables	40		40		67
Total long-term financing receivables, net of allowances	102		102		$ 45
Interest income, operating	2	$ 1	3	$ 2
Franchise or License Fees | Related Party
Related Party Transaction
Related party amounts	$ 24	$ 24	$ 48	$ 39

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