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GOODWILL - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Goodwill    
Goodwill, Gross $ 3,117,000,000 $ 3,117,000,000
Impairment loss 0  
Vacation Ownership    
Goodwill    
Goodwill, Gross 2,770,000,000 2,770,000,000
Exchange & Third-Party Management    
Goodwill    
Goodwill, Gross $ 347,000,000 $ 347,000,000