Revenue from Contracts with Customers - Composition of Contract Liabilities (Details) - Topic 606 - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Advanced deposits
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		$ 117	$ 117
Deferred Sales of VOIs of projects under construction
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		242	169
Club activation fees, annual dues and other
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		113	77
Club Bonus Point incentive liability
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	[1]	$ 38	$ 48

[1] Amounts related to the Club Bonus Point incentive liability are included in Accounts payable, accrued expenses and other on our unaudited 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.