Revenue from Contracts with Customers - Composition of Contract Liabilities (Details) - Topic 606 - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Advanced deposits
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		$ 119	$ 115
Deferred Sales of VOIs of projects under construction
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		148	84
Club activation fees, annual dues and other
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		96	86
Club Bonus Point incentive liability
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	[1]	$ 60	$ 59

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