Debt & Non-recourse Debt - Schedule of Outstanding Borrowings (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Long-term debt, gross		$ 2,459	$ 1,164
Less: unamortized deferred financing costs and discount	[1],[2]	(28)	(5)
Long-term debt		2,431	1,159
Revolving Credit Facility
Debt Instrument [Line Items]
Less: unamortized deferred financing costs and discount		(3)	(4)
Revolver with a weighted average rate of 3.75%, due 2023 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross		610	660
Senior notes with a rate of 5.000%, due 2029
Debt Instrument [Line Items]
Long-term debt, gross		850
Less: unamortized deferred financing costs and discount		(23)
Senior notes with a rate of 4.875% due 2031
Debt Instrument [Line Items]
Long-term debt, gross		500
Less: unamortized deferred financing costs and discount		(23)
Line of Credit | Term loan with a rate of 3.75%, due 2023
Debt Instrument [Line Items]
Long-term debt, gross		172	177
Less: unamortized deferred financing costs and discount		(1)	(1)
Senior Notes
Debt Instrument [Line Items]
Less: unamortized deferred financing costs and discount		(27)	(4)
Senior Notes | Senior notes with a rate of 6.125%, due 2024
Debt Instrument [Line Items]
Long-term debt, gross		300	300
Senior Notes | Senior notes with a rate of 5.000%, due 2029
Debt Instrument [Line Items]
Long-term debt, gross		850	0
Senior Notes | Senior notes with a rate of 4.875% due 2031
Debt Instrument [Line Items]
Long-term debt, gross		500	0
Other Debt
Debt Instrument [Line Items]
Long-term debt, gross		27	27
Non-recourse Debt
Debt Instrument [Line Items]
Long-term debt, gross		657	775
Less: unamortized deferred financing costs and discount	[3]	(7)	(9)
Long-term debt		650	766
Non-recourse Debt | Securitized Debt with a weighted average rate of 2.711%, due 2028
Debt Instrument [Line Items]
Long-term debt, gross		87	106
Non-recourse Debt | Securitized Debt with a weighted average rate of 3.602%, due 2032
Debt Instrument [Line Items]
Long-term debt, gross		172	202
Non-recourse Debt | Securitized Debt with a weighted average rate of 2.431%, due 2033
Debt Instrument [Line Items]
Long-term debt, gross		183	216
Non-recourse Debt | Securitized Debt with a weighted average rate of 3.658%, due 2039
Debt Instrument [Line Items]
Long-term debt, gross		$ 215	$ 251

[1] (3) Amount does not include deferred financing costs of $3 million and $4 million as of June 30, 2021 and December 31, 2020, respectively, related to our revolving facility included in Other assets in our unaudited condensed consolidated balance sheets.

[2] (2) Amount includes deferred financing costs related to our term loan and senior notes of $1 million and $27 million, respectively, as of June 30, 2021 and $1 million and $4 million, respectively, as of Dec

[3] Amount relates to Securitized Debt only and does not include deferred financing costs of $2 million and $3 million as of June 30, 2021 and December 31, 2020, respectively, relating to our Timeshare Facility included in Other Assets in our unaudited condensed consolidated balance sheets.