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Revenue Recognition - Deferred Revenue (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Jan. 01, 2024 | Dec. 31, 2023
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | $ 72 | $ 84 |
Deferred Revenue, Revenue Recognized |  | 159 |  |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period |  | 147 |  |
Recognized as Revenue during the period |  | (159) |  |
Ending Balance at December 31, 2024 |  | 72 |  |
Franchise Group |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue | [1] | 60 | 69 |
Deferred Revenue, Revenue Recognized | [1] | 147 |  |
Deferred Sales Commission |  | 28 |  | $ 29
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period | [1] | 138 |  |
Recognized as Revenue during the period | [1] | (147) |  |
Ending Balance at December 31, 2024 | [1] | 60 |  |
Franchise Group | Brand Marketing Fees |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | 15 | 19 |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Ending Balance at December 31, 2024 |  | 15 |  |
Franchise Group | Area Development Fees |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | 37 | 39 |
Deferred Revenue, Revenue Recognized |  | 4 |  |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period |  | 2 |  |
Recognized as Revenue during the period |  | (4) |  |
Ending Balance at December 31, 2024 |  | 37 |  |
Franchise Group | Outsourcing Management Fees |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | 3 | 3 |
Deferred Revenue, Revenue Recognized |  | 38 |  |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period |  | 38 |  |
Recognized as Revenue during the period |  | (38) |  |
Ending Balance at December 31, 2024 |  | $ 3 |  |
Franchise Group | Minimum |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Outsourcing Management Fees Period |  | 3 months |  |
Franchise Group | Maximum |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Outsourcing Management Fees Period |  | 6 months |  |
Franchise Group | Franchise Rights |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Amortization period |  | 30 years |  |
Franchise Group | International Franchise Rights |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Amortization period |  | 25 years |  |
Owned Brokerage Group |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | $ 12 | 15 |
Deferred Revenue, Revenue Recognized |  | 12 |  |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period |  | 9 |  |
Recognized as Revenue during the period |  | (12) |  |
Ending Balance at December 31, 2024 |  | 12 |  |
Owned Brokerage Group | New Development Business |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
Deferred Revenue |  | 11 | $ 12 |
Deferred Revenue, Revenue Recognized |  | 7 |  |
Movement in Deferred Revenue [Roll Forward] |  |  |  |
Additions during the period |  | 6 |  |
Recognized as Revenue during the period |  | (7) |  |
Ending Balance at December 31, 2024 |  | $ 11 |  |
Owned Brokerage Group | Minimum |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
New Development Period |  | 18 months |  |
Owned Brokerage Group | Maximum |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |
New Development Period |  | 24 months |  |
[1] | Revenues recognized include intercompany marketing fees paid by Owned Brokerage Group.

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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