REVENUE AND RECEIVABLES - Timing of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 1,178	$ 983	$ 3,251	$ 2,594
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	627	556	1,751	1,529
Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	551	427	1,500	1,065
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(1)	1	10	23
Corporate and Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(1)	1	10	23
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
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,108	905	3,012	2,322
Vacation Ownership | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	597	517	1,638	1,388
Vacation Ownership | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	511	388	1,374	934
Exchange & Third-Party Management
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	71	77	229	249
Exchange & Third-Party Management | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	31	38	103	118
Exchange & Third-Party Management | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 40	$ 39	$ 126	$ 131