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Investments in Affiliates - Investments in Affiliates (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) hotel room	Dec. 31, 2023 USD ($) hotel room	Dec. 31, 2022 USD ($)
Schedule of Investments [Line Items]
Our Investment	$ 166	$ 126
Our Portion of Debt	240	208
Total Debt	896	746
Distributions received in period	$ 19	36
Number of hotels | hotel	81
Return of investments in affiliates	$ 1	$ 5	$ 0
Asia/Pacific JV
Schedule of Investments [Line Items]
Ownership Interests	25.00%	25.00%
Our Investment	$ 10	$ 9
Our Portion of Debt	0	0
Total Debt	0	0
Distributions received in period	$ 0	$ 0
Asia/Pacific JV | India
Schedule of Investments [Line Items]
Ownership Interests	36.00%	36.00%
Number of hotels | hotel	7	7
Maui JV
Schedule of Investments [Line Items]
Ownership Interests	67.00%	67.00%
Our Investment	$ 21	$ 28
Our Portion of Debt	13	16
Total Debt	20	23
Distributions received in period	$ 1	$ 8
Maui JV | Maui, HI
Schedule of Investments [Line Items]
Number of vacation ownership project | room	131	131
Hyatt Place JV
Schedule of Investments [Line Items]
Ownership Interests	50.00%	50.00%
Our Investment	$ (15)	$ (15)
Our Portion of Debt	30	30
Total Debt	60	60
Distributions received in period	$ 2	$ 2
Hyatt Place JV | Nashville, TN
Schedule of Investments [Line Items]
Number of hotels | hotel	1	1
Harbor Beach JV
Schedule of Investments [Line Items]
Ownership Interests	49.90%	49.90%
Our Investment	$ (48)	$ (45)
Our Portion of Debt	78	75
Total Debt	156	150
Distributions received in period	$ 5	$ 11
Harbor Beach JV | Fort Lauderdale, FL
Schedule of Investments [Line Items]
Number of hotels | hotel	1	1
Philadelphia Marriott Downtown JV
Schedule of Investments [Line Items]
Ownership Interests	11.00%	11.00%
Our Investment	$ (9)	$ (8)
Our Portion of Debt	23	23
Total Debt	213	213
Distributions received in period	$ 1	6
Return of investments in affiliates		$ 5
Philadelphia Marriott Downtown JV | Philadelphia, PA
Schedule of Investments [Line Items]
Number of hotels | hotel	1	1
Noble JV
Schedule of Investments [Line Items]
Our Investment	$ 170	$ 121
Our Portion of Debt	96	64
Total Debt	447	300
Distributions received in period	$ 10	$ 7
Noble JV | Minimum
Schedule of Investments [Line Items]
Ownership Interests	21.15%	21.15%
Noble JV | Maximum
Schedule of Investments [Line Items]
Ownership Interests	49.00%	49.00%
Fifth Wall Ventures
Schedule of Investments [Line Items]
Our Investment	$ 28	$ 28
Our Portion of Debt	0	0
Total Debt	0	0
Distributions received in period	0	2
Other investments
Schedule of Investments [Line Items]
Our Investment	9	8
Our Portion of Debt	0	0
Total Debt	0	0
Distributions received in period	$ 0	$ 0

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- Definition

Affiliates' portion of debt that is attributable to the reporting entity.

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The total distributions received by the reporting entity from an equity method investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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