DEBT - Schedule of Outstanding Debt (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		$ 16,851	$ 17,298
Principal Amount Outstanding		11,905	11,754
Carrying Value		11,884	11,695
Interest rate swap
Debt Instrument [Line Items]
Change in fair value result effective hedging relationship, increase (decrease)		15
Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity increase under line of credit			7,137
SMBC Funding Facility
Debt Instrument [Line Items]
Borrowing capacity increase under line of credit			1,000
January 2027 Notes | Interest rate swap
Debt Instrument [Line Items]
Change in fair value result effective hedging relationship, increase (decrease)	$ 1
2029 Notes | Interest rate swap
Debt Instrument [Line Items]
Change in fair value result effective hedging relationship, increase (decrease)	$ (9)
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		4,758	4,608
Principal Amount Outstanding		1,413	1,102
Carrying Value		1,413	1,102
Line of Credit | Revolving Funding Facility
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		1,775	1,775
Principal Amount Outstanding		863	651
Carrying Value		863	651
Line of Credit | SMBC Funding Facility
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		800	800
Principal Amount Outstanding		401	176
Carrying Value		401	176
Line of Credit | BNP Funding Facility
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		865	865
Principal Amount Outstanding		575	575
Carrying Value		575	575
Convertible Debt | 2024 Convertible Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		403	0
Principal Amount Outstanding		403	0
Carrying Value		402	0
Senior Notes | 2024 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		900	900
Principal Amount Outstanding		900	900
Carrying Value		899	900
Senior Notes | March 2025 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		600	600
Principal Amount Outstanding		600	600
Carrying Value		599	599
Senior Notes | July 2025 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		1,250	1,250
Principal Amount Outstanding		1,250	1,250
Carrying Value		1,255	1,254
Senior Notes | January 2026 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		1,150	1,150
Principal Amount Outstanding		1,150	1,150
Carrying Value		1,146	1,147
Senior Notes | July 2026 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		1,000	1,000
Principal Amount Outstanding		1,000	1,000
Carrying Value		993	993
Senior Notes | January 2027 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		900	900
Principal Amount Outstanding		900	900
Carrying Value		905	890
Senior Notes | June 2027 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		500	500
Principal Amount Outstanding		500	500
Carrying Value		495	496
Senior Notes | 2028 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		1,250	1,250
Principal Amount Outstanding		1,250	1,250
Carrying Value		1,247	1,247
Senior Notes | 2029 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		0	1,000
Principal Amount Outstanding		0	1,000
Carrying Value		0	974
Senior Notes | 2031 Notes
Debt Instrument [Line Items]
Total Aggregate Principal Amount Committed/Outstanding		700	700
Principal Amount Outstanding		700	700
Carrying Value		$ 691	$ 691