VACATION OWNERSHIP NOTES RECEIVABLE - Schedule of Origination Year, Vacation Ownership Notes Receivable, Brand and FICO Score Prior Year (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	$ 3,136	$ 3,100
700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	1,934	1,878
600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	719	740
Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	66	64
No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total vacation ownership notes receivable	417	418
Marriott Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	488
2025	802
2024	554
2023	355
2022 & Prior	624
Total vacation ownership notes receivable	2,823	2,772
Gross write-offs
2026	1
2025	18
2024	23
2023	13
2022 & Prior	23
Total	78
Marriott Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	327
2025	481
2024	329
2023	209
2022 & Prior	362
Total vacation ownership notes receivable	1,708	1,645
Marriott Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	67
2025	157
2024	129
2023	93
2022 & Prior	193
Total vacation ownership notes receivable	639	652
Marriott Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	9
2025	17
2024	12
2023	7
2022 & Prior	17
Total vacation ownership notes receivable	62	61
Marriott Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	85
2025	147
2024	84
2023	46
2022 & Prior	52
Total vacation ownership notes receivable	414	414
Hyatt Vacation Ownership
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	58
2025	88
2024	53
2023	39
2022 & Prior	75
Total vacation ownership notes receivable	313	328
Gross write-offs
2026	0
2025	7
2024	7
2023	4
2022 & Prior	6
Total	24
Hyatt Vacation Ownership \| 700 +
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	47
2025	61
2024	38
2023	28
2022 & Prior	52
Total vacation ownership notes receivable	226	233
Hyatt Vacation Ownership \| 600 - 699
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	10
2025	24
2024	14
2023	10
2022 & Prior	22
Total vacation ownership notes receivable	80	88
Hyatt Vacation Ownership \| Less Than 600
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	1
2025	2
2024	0
2023	0
2022 & Prior	1
Total vacation ownership notes receivable	4	3
Hyatt Vacation Ownership \| No Score
Accounts, Notes, Loans and Financing Receivable [Line Items]
2026	0
2025	1
2024	1
2023	1
2022 & Prior	0
Total vacation ownership notes receivable	$ 3	$ 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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