Inventory - Schedule of Costs of Sales True-ups Relating to VOI Products and Impacts on the Carrying Value of Inventory (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Time Share
Inventory [Line Items]
Expenses	[1]	$ 7	$ 6
Fee For Service Upgrades
Inventory [Line Items]
Expenses		$ 2	$ 1

[1] For the three months ended March 31, 2022 and 2021, the cost of sales true-up reduced costs of VOI sales and increased inventory.