Revenue from Contracts with Customers - Composition of Contract Liabilities (Details) - Topic 606 - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020
Advanced deposits
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		$ 116	$ 117
Deferred Sales of VOIs of projects under construction
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		0	169
Annual dues and Legacy-HGV Club activation fees
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		100	77
Bonus Point incentive liability
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	[1]	$ 51	$ 48

[1] Amounts related to the 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.