Fair Value Measurements - Schedule of Carrying and Estimated Fair Value Amounts (Details) - USD ($) $ in Millions		Dec. 31, 2020	Dec. 31, 2019
Carrying Amount
Assets:
Timeshare financing receivables, net	[1]	$ 974	$ 1,156
Liabilities:
Debt, net	[2]	1,159	828
Non-recourse debt, net	[2]	766	747
Level 1
Liabilities:
Debt, net	[2]	315	326
Level 3
Assets:
Timeshare financing receivables, net	[1]	1,248	1,446
Liabilities:
Debt, net	[2]	871	544
Non-recourse debt, net	[2]	$ 732	$ 749

[1] Carrying amount net of allowance for financing receivables losses.

[2] Carrying amount net of unamortized deferred financing costs and discount.