Revenue from Contracts with Customers - Composition of Contract Liabilities (Details) - USD ($) $ in Millions		Sep. 30, 2019	Dec. 31, 2018
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		$ 165	$ 95
Topic 606 | Advanced deposits
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		112	101
Topic 606 | Deferred Sales of VOIs of projects under construction
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		49
Topic 606 | Club activation fees, annual dues and other
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities		99	72
Topic 606 | Club Bonus Point incentive liability
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Contract liabilities	[1]	$ 65	$ 56

[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 revenue for incentives from VOI sales and sales and marketing expenses in conjunction with our fee-for-service arrangements