REVENUE AND RECEIVABLES - Sources of Revenue by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,112	$ 1,091
Financing	83	78
Total Revenues	1,195	1,169
Sale of vacation ownership products
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	352	375
Ancillary revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	66	62
Management fee revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	56	52
Exchange and other services revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	89	86
Management and exchange
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	211	200
Rental
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	158	151
Cost Reimbursement
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	391	365
Operating segments
Disaggregation of Revenue [Line Items]
Total Revenues	1,195	1,168
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	1
Financing	0	0
Total Revenues	0	1
Corporate and Other | Sale of vacation ownership products
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Corporate and Other | Ancillary revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Corporate and Other | Management fee revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(1)	(1)
Corporate and Other | Exchange and other services revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	12	10
Corporate and Other | Management and exchange
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11	9
Corporate and Other | Rental
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Corporate and Other | Cost Reimbursement
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(11)	(8)
Vacation Ownership | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,047	1,019
Financing	83	78
Total Revenues	1,130	1,097
Vacation Ownership | Operating segments | Sale of vacation ownership products
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	352	375
Vacation Ownership | Operating segments | Ancillary revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	65	61
Vacation Ownership | Operating segments | Management fee revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	52	45
Vacation Ownership | Operating segments | Exchange and other services revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	31	29
Vacation Ownership | Operating segments | Management and exchange
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	148	135
Vacation Ownership | Operating segments | Rental
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	147	141
Vacation Ownership | Operating segments | Cost Reimbursement
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	400	368
Exchange & Third-Party Management | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	65	71
Financing	0	0
Total Revenues	65	71
Exchange & Third-Party Management | Operating segments | Sale of vacation ownership products
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Exchange & Third-Party Management | Operating segments | Ancillary revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1	1
Exchange & Third-Party Management | Operating segments | Management fee revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5	8
Exchange & Third-Party Management | Operating segments | Exchange and other services revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	46	47
Exchange & Third-Party Management | Operating segments | Management and exchange
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	52	56
Exchange & Third-Party Management | Operating segments | Rental
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11	10
Exchange & Third-Party Management | Operating segments | Cost Reimbursement
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 2	$ 5