Restricted Cash - Schedule of Restricted Cash (Details) - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		$ 230	$ 98
Escrow deposits on VOI sales
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash		128	69
Reserves related to non-recourse debt
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	[1]	68	29
Other [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	[2]	$ 34	$ 0

[1] (1) See Note 12: Debt & Non-recourse Debt for further discussion.

[2] 2) Other restricted cash includes cash collected on behalf of HOAs, deposits related to servicer arrangements and other individually immaterial items.