VACATION OWNERSHIP NOTES RECEIVABLE - Schedule of Origination Year, Vacation Ownership Notes Receivable, Brand and FICO Score Prior Year (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	$ 3,247	$ 3,100
700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	2,027	1,878
600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	730	740
Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	68	64
No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	422	418
Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	799
2025	741
2024	496
2023	324
2022 & Prior	568
Total vacation ownership notes receivable	2,928	2,772
Gross write-offs
2026	3
2025	29
2024	36
2023	21
2022 & Prior	33
Total	122
Marriott Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	539
2025	447
2024	292
2023	189
2022 & Prior	329
Total vacation ownership notes receivable	1,796	1,645
Marriott Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	116
2025	150
2024	119
2023	87
2022 & Prior	178
Total vacation ownership notes receivable	650	652
Marriott Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	15
2025	16
2024	11
2023	7
2022 & Prior	15
Total vacation ownership notes receivable	64	61
Marriott Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	129
2025	128
2024	74
2023	41
2022 & Prior	46
Total vacation ownership notes receivable	418	414
Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	94
2025	76
2024	47
2023	35
2022 & Prior	67
Total vacation ownership notes receivable	319	328
Gross write-offs
2026	1
2025	10
2024	10
2023	5
2022 & Prior	10
Total	36
Hyatt Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	73
2025	52
2024	34
2023	25
2022 & Prior	47
Total vacation ownership notes receivable	231	233
Hyatt Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	18
2025	21
2024	13
2023	9
2022 & Prior	19
Total vacation ownership notes receivable	80	88
Hyatt Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	2
2025	2
2024	0
2023	0
2022 & Prior	0
Total vacation ownership notes receivable	4	3
Hyatt Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	1
2025	1
2024	0
2023	1
2022 & Prior	1
Total vacation ownership notes receivable	$ 4	$ 4

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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