DEBT - Components of Debt Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Line of Credit Facility [Line Items]
Amortization of debt issuance costs	$ 34	$ 33	$ 31
Net amortization of original issue discount/premium	0	(6)	(5)
Total interest and credit facility fees expense	793	715	582
Cash paid for interest expense	750	676	524
Senior Notes
Line of Credit Facility [Line Items]
Stated interest expense	435	399	269
Amortization of debt issuance costs	15	16	15
Net amortization of original issue discount/premium	0	(6)	(7)
Total interest and credit facility fees expense	449	409	277
Cash paid for interest expense	431	399	278
Senior Notes | Interest rate swap | Hedged Item
Line of Credit Facility [Line Items]
Net gain on interest rate swaps accounted for as hedge instruments and the related hedged items	(1)	0	0
Revolving Credit Facility
Line of Credit Facility [Line Items]
Average outstanding balance	1,613	1,421	1,795
Revolving Credit Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	97	102	122
Credit facility fees	12	13	13
Amortization of debt issuance costs	8	9	8
Total interest and credit facility fees expense	117	124	143
Cash paid for interest expense	$ 109	$ 118	$ 116
Average stated interest rate	5.93%	7.07%	6.80%
Revolving Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 1,068	$ 751	$ 855
Revolving Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	67	55	61
Credit facility fees	6	7	5
Amortization of debt issuance costs	5	4	3
Total interest and credit facility fees expense	78	66	69
Cash paid for interest expense	$ 72	$ 56	$ 60
Average stated interest rate	6.15%	7.15%	7.10%
SMBC Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 455	$ 398	$ 410
SMBC Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	28	30	29
Credit facility fees	3	2	2
Amortization of debt issuance costs	3	2	2
Total interest and credit facility fees expense	34	34	33
Cash paid for interest expense	$ 30	$ 30	$ 28
Average stated interest rate	6.13%	7.50%	6.92%
BNP Funding Facility
Line of Credit Facility [Line Items]
Average outstanding balance	$ 721	$ 629	$ 438
BNP Funding Facility | Line of Credit
Line of Credit Facility [Line Items]
Stated interest expense	45	48	35
Credit facility fees	2	1	1
Amortization of debt issuance costs	2	2	2
Total interest and credit facility fees expense	49	51	38
Cash paid for interest expense	$ 48	$ 48	$ 33
Average stated interest rate	6.18%	7.48%	7.90%
April 2036 CLO Notes | Secured Debt
Line of Credit Facility [Line Items]
Stated interest expense	$ 64	$ 25
Amortization of debt issuance costs	1	0
Total interest and credit facility fees expense	65	25
Cash paid for interest expense	$ 60	$ 15
Average stated interest rate	5.91%	6.94%
Average outstanding balance	$ 1,076	$ 352
Convertible Unsecured Notes | Convertible Debt
Line of Credit Facility [Line Items]
Stated interest expense		3	$ 19
Amortization of debt issuance costs		0	1
Net amortization of original issue discount/premium		0	2
Total interest and credit facility fees expense		3	22
Cash paid for interest expense		$ 9	$ 9