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DEBT AND NON-RECOURSE DEBT - Additional Information (Details) - USD ($) $ in Millions |  |  |  |  | 9 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 08, 2024 | Jul. 18, 2024 | Apr. 08, 2024 | Apr. 07, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Nov. 07, 2024 | May 31, 2024 | Apr. 30, 2024 | Jan. 17, 2024 | Jan. 10, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | $ 308 |  |  |  |  |  |  |
Accumulated other comprehensive loss, qualifying as hedge |  |  |  |  | 29 |  |  |  |  |  |  | $ 42
Repayment of non-recourse debt |  |  |  |  | 1,393 | $ 528 |  |  |  |  |  |
Reserves Related to Non-Recourse Debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  |  |  | 51 |  |  |  |  |  |  | 48
Securitized |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Timeshare financing receivables, gross |  |  |  |  |  |  |  | $ 375 | $ 240 |  |  |
Securitized | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  | 5.18% |  |  |  |  |
Timeshare financing receivables, gross |  |  |  |  |  |  | $ 500 |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  | 3 |  |  |  |  |  |  | 3
Cash Collateral Secured Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit outstanding, amount |  |  |  |  | 1 |  |  |  |  |  |  |
Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  | 25 |  |  |  |  |  |  | 17
Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  | 39 |  |  |  |  |  |  | 21
Senior Secured Credit Facilities | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Letters of credit outstanding, amount |  |  |  |  | $ 24 |  |  |  |  |  |  |
Senior notes with a rate of 6.625%, due 2032 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  |  |  | $ 900 | $ 900 |
Debt instrument, stated interest rate (as a percent) |  |  |  |  | 6.625% |  |  |  |  |  | 6.625% |
Term loan with a rate of 7.747%, due 2028 | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  | 7.747% |  |  |  |  |  |  |
Term loan with a rate of 7.747%, due 2028 | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.50% | 2.75% |  |  |  |  |  |  |  |
Derivative fixed interest rate |  |  |  |  | 1.55% |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  | $ 550 |  |  |  |  |  |  |
Term loan with a rate of 7.497%, due 2031 | Line of Credit |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  | 7.497% |  |  |  |  |  |  |
Term loan with a rate of 7.497%, due 2031 | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.25% |  | 2.75% |  |  |  |  |  |  |  |
Term Loan A Due 2028 | Senior Notes | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount | $ 400 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.75% |  |  |  |  |  |  |  |  |  |  |
Junior subordinated debentures | Revolving Credit Facility | Variable Interest Entities |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Repayment of non-recourse debt |  |  |  |  | $ 171 |  |  |  |  |  |  |
Timeshare Facility Due 2025 | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  | 3 |  |  |  |  |  |  | $ 2
Timeshare Facility Due 2025 | Secured Debt |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | $ 750 |  |  |  |  |  |  |
Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  |  |  |  |  |  | 5 | 4 |  |  |
5.75% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  |  | $ 101 |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  |  | 5.75% |  |  |
5.99% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  | $ 57 | $ 58 |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  | 5.99% | 5.99% |  |  |
6.62% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  |  | $ 46 |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  |  | 6.62% |  |  |
8.85% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  |  | $ 35 |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  |  | 8.85% |  |  |
5.50% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  | $ 217 |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  | 5.50% |  |  |  |
5.65% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  | $ 80 |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  | 5.65% |  |  |  |
6.91% Timeshare Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  |  |  |  | $ 21 |  |  |  |
Debt instrument, stated interest rate (as a percent) |  |  |  |  |  |  |  | 6.91% |  |  |  |

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