REVENUE AND RECEIVABLES - Timing of Revenue from Contracts with Customers (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
Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	649	608
Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	463	483
Corporate and Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	1
Corporate and Other | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	1
Corporate and Other | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Vacation Ownership | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,047	1,019
Vacation Ownership | Operating segments | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	625	578
Vacation Ownership | Operating segments | Goods or services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	422	441
Exchange & Third-Party Management | Operating segments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	65	71
Exchange & Third-Party Management | Operating segments | Services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	24	29
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	$ 41	$ 42