ACQUISITIONS - Schedule of Preliminary Estimates of the Fair Value of Assets Acquired and Liabilities Assumed in the Grand Islander Acquisition (Details) - USD ($) $ in Millions	Dec. 01, 2023	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Goodwill		$ 1,418	$ 1,416
Grand Islander
Business Acquisition [Line Items]
Total consideration transferred	$ 117
Payments to acquire business, gross	110
Business combination, contingent consideration, liability, noncurrent	4
Business combination, contingent consideration, liability, current	3
Cash and cash equivalents	8
Restricted cash	28
Accounts receivable, net of allowance for doubtful accounts	5
Securitized timeshare financing, receivables	52
Unsecuritized timeshare financing, receivables	199
Inventory	18
Other assets	2
Business combination, recognized identifiable assets acquired and liabilities assumed, noncurrent liabilities, long-term debt	193
Business combination, recognized identifiable assets acquired and liabilities assumed, noncurrent liabilities, other	4
Goodwill	2
Grand Islander | Asset Pledged as Collateral
Business Acquisition [Line Items]
Unsecuritized timeshare financing, receivables	$ 127
Grand Islander | Common Stock
Business Acquisition [Line Items]
Outstanding equity interests	100.00%