REVENUE AND RECEIVABLES - Timing of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,105	$ 1,178	$ 3,294	$ 3,251
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	681	627	1,883	1,751
Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	424	551	1,411	1,500
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(4)	(1)	(2)	10
Corporate and Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(4)	(1)	(2)	10
Corporate and Other | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Vacation Ownership | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,045	1,108	3,096	3,012
Vacation Ownership | Operating segments | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	658	597	1,802	1,638
Vacation Ownership | Operating segments | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	387	511	1,294	1,374
Exchange & Third-Party Management | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	64	71	200	229
Exchange & Third-Party Management | Operating segments | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	27	31	83	103
Exchange & Third-Party Management | Operating segments | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 37	$ 40	$ 117	$ 126