VACATION OWNERSHIP NOTES RECEIVABLE - Financing Receivable Year of Originated (Details) - Legacy-MVW - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	$ 114
2019	541
2018	393
2017	218
2016	104
2015 and Prior	197
Total vacation ownership notes receivable	1,567	$ 1,570
Non-Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	78
2019	70
2018	36
2017	16
2016	9
2015 and Prior	28
Total vacation ownership notes receivable	237	272
Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
2020	36
2019	471
2018	357
2017	202
2016	95
2015 and Prior	169
Total vacation ownership notes receivable	$ 1,330	$ 1,298