Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) Country Customer	Dec. 31, 2018 USD ($) Country Customer	Dec. 31, 2017 Country Customer
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Club bonus points to customers, maximum valid duration period	2 years
Contract cost	$ 15,000,000
Commission expense for certain vacation package sales	3,000,000
Adjustments on inventory reacquired upon related receivables	0
Compensation expense recognized	13,000,000	$ 10,000,000
Operating lease right-of-use assets, net	60,000,000
Operating lease liabilities	76,000,000
ASU 2016-02
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Operating lease right-of-use assets, net	68,000,000
Operating lease liabilities	$ 80,000,000
Performance Shares
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Award vesting period	3 years
Performance Shares | VOI sale
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Award vesting percentage	30.00%
Performance Shares | Adjusted EBITDA
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Award vesting percentage	70.00%
Other Assets
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Deferred selling expenses	$ 19,000,000	$ 4,000,000
Blackstone | Management Agreements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Merger agreement completion date	Oct. 24, 2007
Computer Equipment and Acquired Software
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Total Revenue | Customer Concentration Risk | Single Customer
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage			15.00%
Number of Customers Accounted for Revenue | Customer	1	1	1
Maximum | Restricted Stock Units (RSUs)
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Award vesting period	3 years
Maximum | Stock Options
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Award vesting period	3 years
Award termination period from date of grant or earlier	10 years
Maximum | Buildings and Improvements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	40 years
Maximum | Furniture and Equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	8 years
Maximum | Total Revenue | Customer Concentration Risk | Single Customer
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%	10.00%
Minimum | Buildings and Improvements
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	8 years
Minimum | Furniture and Equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Non-US
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of countries representing more than 10 percent of total revenue | Country	0	0	0
Number of countries representing over 10 percent of total property and equipment, net | Country	0	0