VACATION OWNERSHIP NOTES RECEIVABLE - Notes Receivable Reserves (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Acquired
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	$ 60	$ 55
Securitizations	0	0
Clean-up call	0	0
Write-offs	(49)	(18)
Recoveries	27	9
Defaulted vacation ownership notes receivable repurchase activity	0	0
Initial allowance for credit losses for Legacy-Welk vacation ownership notes receivable	32
(Decrease) increase in vacation ownership notes receivable reserve	0	14
Ending balance	70	60	$ 55
Acquired | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve		10
Acquired | Previously Reported
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		0
Ending balance			0
Acquired | Revision of Prior Period, Accounting Standards Update, Adjustment
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		55
Ending balance			55
Originated
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	310	204	140
Securitizations	0	0	0
Clean-up call	0	0	0
Write-offs	(79)	(31)	(48)
Defaulted vacation ownership notes receivable repurchase activity	0	0	0
(Decrease) increase in vacation ownership notes receivable reserve	102	137	112
Ending balance	333	310	204
Originated | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve		59
Non-securitized | Acquired
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	39	29
Securitizations	(9)	(1)
Clean-up call	3	1
Write-offs	(49)	(18)
Recoveries	27	9
Defaulted vacation ownership notes receivable repurchase activity	32	17
Initial allowance for credit losses for Legacy-Welk vacation ownership notes receivable	11
(Decrease) increase in vacation ownership notes receivable reserve	(7)	2
Ending balance	47	39	29
Non-securitized | Acquired | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve	8
Non-securitized | Acquired | Previously Reported
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		0
Ending balance			0
Non-securitized | Acquired | Revision of Prior Period, Accounting Standards Update, Adjustment
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		29
Ending balance			29
Non-securitized | Originated
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	193	90	61
Securitizations	(76)	(70)	(81)
Clean-up call	12	37	24
Write-offs	(79)	(31)	(48)
Defaulted vacation ownership notes receivable repurchase activity	65	80	40
(Decrease) increase in vacation ownership notes receivable reserve	78	87	94
Ending balance	193	193	90
Non-securitized | Originated | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve	32
Securitized | Acquired
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	21	26
Securitizations	9	1
Clean-up call	(3)	(1)
Write-offs	0	0
Recoveries	0	0
Defaulted vacation ownership notes receivable repurchase activity	(32)	(17)
Initial allowance for credit losses for Legacy-Welk vacation ownership notes receivable	21
(Decrease) increase in vacation ownership notes receivable reserve	7	12
Ending balance	23	21	26
Securitized | Acquired | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve	2
Securitized | Acquired | Previously Reported
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		0
Ending balance			0
Securitized | Acquired | Revision of Prior Period, Accounting Standards Update, Adjustment
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance		26
Ending balance			26
Securitized | Originated
Time Sharing Transactions, Allowance for Uncollectible Accounts
Beginning balance	117	114	79
Securitizations	76	70	81
Clean-up call	(12)	(37)	(24)
Write-offs	0	0	0
Defaulted vacation ownership notes receivable repurchase activity	(65)	(80)	(40)
(Decrease) increase in vacation ownership notes receivable reserve	24	50	18
Ending balance	140	$ 117	$ 114
Securitized | Originated | COVID-19 pandemic
Time Sharing Transactions, Allowance for Uncollectible Accounts
(Decrease) increase in vacation ownership notes receivable reserve	$ 27