Fair Value Measurements - Schedule of Carrying and Estimated Fair Value Amounts (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Carrying Amount
Assets:
Timeshare financing receivables, net	[1]	$ 940	$ 974
Liabilities:
Debt, net	[2]	1,156	1,159
Non-recourse debt, net	[2]	698	766
Level 1
Liabilities:
Debt, net	[2]	314	315
Level 3
Assets:
Timeshare financing receivables, net	[1]	1,209	1,248
Liabilities:
Debt, net	[2]	872	871
Non-recourse debt, net	[2]	$ 657	$ 732

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

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