Property and Equipment - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Timeshare units transfer from property and equipment to inventory		$ 301
Non cash transaction related to classification of undeveloped land and infrastructure on properties and equipment		16
Non-cash impairment charge	$ 209
Depreciation expense		30	$ 35	$ 23
Property and Equipment
Property Plant And Equipment [Line Items]
Non-cash impairment charge	$ 8	$ 8