Debt & Non-recourse Debt - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Debt issuance costs	[1],[2]	$ 6		$ 5
Amortization of deferred financing costs, contract costs, and other		6	$ 4
Accumulated other comprehensive loss, Qualifying as hedge		1
Restricted cash		105		98
Reserves related to non-recourse debt
Debt Instrument [Line Items]
Restricted cash	[3]	29		29
Restricted cash and cash equivalents depository accounts		29		29
Timeshare Facility
Debt Instrument [Line Items]
Term loan outstanding		450
Remaining borrowing capacity		450		450
Interest Expense
Debt Instrument [Line Items]
Amortization of deferred financing costs, contract costs, and other		$ 2
LIBOR
Debt Instrument [Line Items]
Derivative fixed interest rate		0.53%
Revolving Credit Facility Amended
Debt Instrument [Line Items]
Debt issuance costs		$ 1
Revolving Credit Facility
Debt Instrument [Line Items]
Debt issuance costs		$ 4		4
Interest rate on revolving credit facility description		one month LIBOR
Revolving Credit Facility | LIBOR
Debt Instrument [Line Items]
Interest rate on revolving credit facility		3.50%
Revolving Credit Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Interest rate on revolving credit facility		0.25%
Revolving Credit Facility | Senior Secured Credit Facilities
Debt Instrument [Line Items]
Debt instrument repaid amount		$ 2
Letters of credit outstanding, amount		1		$ 1
Term Loan
Debt Instrument [Line Items]
Debt instrument face amount		$ 175

[1] Amount includes deferred financing costs related to our term loan and senior notes of $2 million and $4 million, respectively, as of March 31, 2021 and $1 million and $4 million, respectively, as of December 31, 2020.

[2] Amount does not include deferred financing costs of $4 million as of March 31, 2021 and December 31, 2020, relating to our revolving facility included in Other Assets in our condensed consolidated balance sheets.

[3]  See Note 11: Debt & Non-recourse Debt for further discussion.