VACATION OWNERSHIP NOTES RECEIVABLE - Financing Receivable Year of Originated (Details) - Legacy-MVW - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	$ 132
2019	519
2018	354
2017	202
2016	96
2015 and Prior	178
Total vacation ownership notes receivable	1,481	$ 1,570
Non-Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	53
2019	63
2018	37
2017	16
2016	9
2015 and Prior	28
Total vacation ownership notes receivable	206	272
Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	79
2019	456
2018	317
2017	186
2016	87
2015 and Prior	150
Total vacation ownership notes receivable	$ 1,275	$ 1,298