VACATION OWNERSHIP NOTES RECEIVABLE - Origination Year, Vacation Ownership Notes Receivable, Brand and FICO score prior year (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	$ 3,024	$ 2,976
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	2,932	2,860
Originated \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	1,780	1,723
Originated \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	705	709
Originated \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	59	60
Originated \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	388	368
Originated \| Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	466
2024	795
2023	516
2022	359
2021 & Prior	507
Total vacation ownership notes receivable	2,643	2,570
Gross write-offs
2025	1
2024	13
2023	28
2022	18
2021 & Prior	22
Total	82
Originated \| Marriott Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	283
2024	473
2023	307
2022	215
2021 & Prior	291
Total vacation ownership notes receivable	1,569	1,513
Originated \| Marriott Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	78
2024	170
2023	127
2022	102
2021 & Prior	155
Total vacation ownership notes receivable	632	634
Originated \| Marriott Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	8
2024	16
2023	11
2022	8
2021 & Prior	14
Total vacation ownership notes receivable	57	58
Originated \| Marriott Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	97
2024	136
2023	71
2022	34
2021 & Prior	47
Total vacation ownership notes receivable	385	365
Originated \| Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	71
2024	87
2023	58
2022	47
2021 & Prior	26
Total vacation ownership notes receivable	289	290
Gross write-offs
2025	0
2024	4
2023	6
2022	5
2021 & Prior	2
Total	17
Originated \| Hyatt Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	55
2024	62
2023	42
2022	33
2021 & Prior	19
Total vacation ownership notes receivable	211	210
Originated \| Hyatt Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	15
2024	23
2023	15
2022	13
2021 & Prior	7
Total vacation ownership notes receivable	73	75
Originated \| Hyatt Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	1
2024	1
2023	0
2022	0
2021 & Prior	0
Total vacation ownership notes receivable	2	2
Originated \| Hyatt Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2025	0
2024	1
2023	1
2022	1
2021 & Prior	0
Total vacation ownership notes receivable	$ 3	$ 3

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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