Revenue from Contracts with Customers - Composition of Contract Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		$ 262	$ 186
Topic 606 | Advanced deposits
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		117	115
Topic 606 | Deferred Sales of VOIs of projects under construction
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		169	84
Topic 606 | Club activation fees, annual dues and other
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		77	86
Topic 606 | Club Bonus Point incentive liability
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	[1]	$ 48	$ 59

[1] Amounts related to the Club Bonus Point incentive liability are included in Accounts payable, accrued expenses and other on our consolidated balance sheets. This liability is comprised of revenue for incentives from VOI sales and sales and marketing expenses in conjunction with our fee-for-service arrangements.