RELATED PARTIES - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Proceeds from note receivable held by variable interest entities	$ 362		$ 253
Payment of SPE liabilities		$ 302		$ 0	$ 0	$ 302
Interest expense				$ 313	443	378
Buyer-sponsored SPEs
Related Party Transaction [Line Items]
Interest income						22
Interest expense					$ 0	$ 12
Weighted average interest rate on SPE financial investments					5.50%	5.50%
Monetization SPEs
Related Party Transaction [Line Items]
Weighted average interest rate on SPE long-term notes						5.60%