TIMESHARE FINANCING RECEIVABLES - Schedule of Gross Timeshare Financing Receivables by Origination Year and Average FICO Score (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Originated
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	$ 748
One year prior to current fiscal year	724
Two years prior to current fiscal year	500
Three years prior to current fiscal year	197
Four years prior to current fiscal year	49
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	217
Timeshare financing receivables, gross	2,435		$ 2,096
2024	0
2023	2
2022	26
2021	17
2020	3
Prior	9
Total	57	$ 33
Originated | 700+
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	481
One year prior to current fiscal year	443
Two years prior to current fiscal year	304
Three years prior to current fiscal year	121
Four years prior to current fiscal year	28
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	125
Timeshare financing receivables, gross	1,502		1,288
Originated | 600-699
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	181
One year prior to current fiscal year	190
Two years prior to current fiscal year	143
Three years prior to current fiscal year	53
Four years prior to current fiscal year	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	50
Timeshare financing receivables, gross	627		531
Originated | Less than 600
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	19
One year prior to current fiscal year	24
Two years prior to current fiscal year	19
Three years prior to current fiscal year	7
Four years prior to current fiscal year	1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7
Timeshare financing receivables, gross	77		70
Originated | No score
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	67
One year prior to current fiscal year	67
Two years prior to current fiscal year	34
Three years prior to current fiscal year	16
Four years prior to current fiscal year	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	35
Timeshare financing receivables, gross	229		207
Acquired
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	5
One year prior to current fiscal year	441
Two years prior to current fiscal year	211
Three years prior to current fiscal year	166
Four years prior to current fiscal year	139
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	449
Timeshare financing receivables, gross	1,411		765
2024	0
2023	28
2022	19
2021	24
2020	16
Prior	24
Total	111	$ 28
Acquired | 700+
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	4
One year prior to current fiscal year	248
Two years prior to current fiscal year	100
Three years prior to current fiscal year	79
Four years prior to current fiscal year	64
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	195
Timeshare financing receivables, gross	690		322
Acquired | 600-699
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	1
One year prior to current fiscal year	143
Two years prior to current fiscal year	76
Three years prior to current fiscal year	63
Four years prior to current fiscal year	46
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	156
Timeshare financing receivables, gross	485		209
Acquired | Less than 600
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	0
One year prior to current fiscal year	15
Two years prior to current fiscal year	9
Three years prior to current fiscal year	9
Four years prior to current fiscal year	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	30
Timeshare financing receivables, gross	73		42
Acquired | No score
Financing Receivable, Recorded Investment [Line Items]
Current fiscal year	0
One year prior to current fiscal year	35
Two years prior to current fiscal year	26
Three years prior to current fiscal year	15
Four years prior to current fiscal year	19
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	68
Timeshare financing receivables, gross	$ 163		$ 192