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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) portfolio_segment shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Club activation fee amortization period | 7 years |  |
Contract cost | $ 19 | $ 11 |
Commission expense for certain vacation package sales | $ 11 | 7 | $ 9
Number of timeshare financing portfolio segments | portfolio_segment | 2 |  |
Number of days, ceased accruing interest | 91 days |  |
Number of days, timeshare financing receivable | 121 days |  |
Capitalized interest expense | $ 10 | 3 | 2
Deferred selling expenses | $ 24 | $ 18 |
Common stock, shares outstanding (in shares) | shares | 96,720,179 | 105,961,160 |
Compensation expense recognized | $ 34 | $ 23 | $ 19
Computer Equipment and Acquired Software |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful life | 3 years |  |
Minimum |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Bonus points validation period | 18 months |  |
Minimum | Buildings and Improvements |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful life | 8 years |  |
Minimum | Furniture and equipment |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful life | 3 years |  |
Minimum | Cloud Computing Arrangements |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life | 3 years |  |
Maximum |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Bonus points validation period | 30 months |  |
Maximum | Buildings and Improvements |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful life | 40 years |  |
Maximum | Furniture and equipment |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Property and equipment, estimated useful life | 15 years |  |
Maximum | Cloud Computing Arrangements |  |  |
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life | 5 years |  |

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