DEBT - Schedule of Components of Debt Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Line of Credit Facility [Line Items]
Amortization of debt issuance costs			$ 22	$ 19
Cash paid for interest expense			303	250
Convertible Debt
Line of Credit Facility [Line Items]
Stated interest expense	$ 5	$ 8	15	25
Amortization of debt issuance costs	0	1	1	2
Net (amortization) accretion of original issue premium/discount	0	1	2	4
Total interest and credit facility fees expense	5	10	18	31
Cash paid for interest expense	9	17	26	34
Senior Notes
Line of Credit Facility [Line Items]
Stated interest expense	67	62	202	168
Amortization of debt issuance costs	4	4	11	8
Net (amortization) accretion of original issue premium/discount	(2)	(1)	(5)	(1)
Total interest and credit facility fees expense	69	65	208	175
Cash paid for interest expense	79	90	213	187
Revolving Credit Facility
Line of Credit Facility [Line Items]
Average outstanding balance	1,875	889	1,402	922
Revolving Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	19	4	34	14
Credit facility fees	5	4	7	11
Amortization of debt issuance costs	2	2	5	4
Total interest and credit facility fees expense	26	10	46	29
Cash paid for interest expense	$ 19	$ 4	$ 35	$ 14
Average stated interest rate	3.95%	1.97%	3.15%	2.09%
Revolving Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 944	$ 368	$ 805	$ 602
Revolving Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	10	2	19	12
Credit facility fees	1	2	3	5
Amortization of debt issuance costs	1	1	2	3
Total interest and credit facility fees expense	12	5	24	20
Cash paid for interest expense	$ 9	$ 3	$ 19	$ 11
Average stated interest rate	4.38%	2.69%	3.17%	2.35%
SMBC Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 402	$ 9	$ 403	$ 155
SMBC Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	4	0	9	2
Credit facility fees	1	2	2	4
Amortization of debt issuance costs	1	1	2	2
Total interest and credit facility fees expense	6	3	13	8
Cash paid for interest expense	$ 4	$ 0	$ 9	$ 3
Average stated interest rate	4.27%	2.36%	3.00%	2.00%
BNP Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 143	$ 0	$ 81	$ 20
BNP Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	2	0	3	1
Credit facility fees	0	1	1	3
Amortization of debt issuance costs	0	0	1	0
Total interest and credit facility fees expense	2	1	5	4
Cash paid for interest expense	$ 1	$ 0	$ 1	$ 1
Average stated interest rate	4.35%	0.00%	3.95%	3.45%