v3.26.1
REVENUE AND RECEIVABLES - Schedule of Timing of Revenue from Contracts with Customers (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 1,228 $ 1,156 $ 2,393 $ 2,268
Services transferred over time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 686 674 1,402 1,321
Goods or services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 542 482 991 947
Corporate and Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6 5 13 12
Corporate and Other | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6 5 13 12
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 1,168 1,098 2,269 2,145
Vacation Ownership | Operating segments | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 658 649 1,345 1,268
Vacation Ownership | Operating segments | Goods or services transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 510 449 924 877
Exchange & Third-Party Management | Operating segments        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 54 53 111 111
Exchange & Third-Party Management | Operating segments | Services transferred over time        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 22 20 44 41
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 $ 32 $ 33 $ 67 $ 70