Franchising, Marketing and Reservation Activities - Condensed Consolidated Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Forgiveness of notes	$ (410)	$ (382)	$ (1,112)	$ (1,095)
Bad debt expense related to notes	0	0	0	1
Revo Hospitality Group \| Development advance notes
Disaggregation of Revenue [Line Items]
Reduction in development advance notes	10
Forgiveness of note receivable
Disaggregation of Revenue [Line Items]
Forgiveness of notes	$ 9	$ 8	$ 26	$ 23

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.

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- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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