DEBT - Schedule of Debt Obligations (Details) € in Thousands, £ in Thousands, $ in Thousands	Jun. 30, 2025 USD ($)	Jun. 30, 2025 EUR (€)	Jun. 30, 2025 CAD ($)	Jun. 30, 2025 GBP (£)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 GBP (£)	Sep. 13, 2022 USD ($)	Feb. 11, 2022 USD ($)
Debt Instrument [Line Items]
Aggregate Principal Committed	$ 3,175,000,000				$ 2,950,000,000
Outstanding Principal	2,054,188,000				1,983,401,000
Unused Portion	1,113,037,000				964,770,000
BNP Funding Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate Principal Committed	600,000,000				600,000,000
Outstanding Principal	316,000,000				316,000,000
Unused Portion	284,000,000				284,000,000
Truist Credit Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate Principal Committed	1,450,000,000	€ 3,298	$ 3,300	£ 1,020	1,300,000,000	€ 3,298	$ 300	£ 1,020
Outstanding Principal	613,188,000				617,401,000
Unused Portion	829,037,000				680,770,000
Outstanding letters of credit	7,775,000				1,828,000
2027 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	425,000,000				425,000,000					$ 425,000,000
Outstanding Principal	425,000,000				425,000,000
Unused Portion	0				0
Unamortized debt issuance costs	1,822,000				2,374,000
Unamortized original issuance discount	346,000				452,000
2025 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	0				275,000,000				$ 275,000,000
Outstanding Principal	0				275,000,000
Unused Portion	0				0
Unamortized debt issuance costs	0				856,000
Unamortized original issuance discount	0				0
2029 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	350,000,000				350,000,000
Outstanding Principal	350,000,000				350,000,000
Unused Portion	0				0
Unamortized debt issuance costs	2,775,000				3,297,000
Unamortized original issuance discount	3,013,000				3,398,000
2030 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	350,000,000				0
Outstanding Principal	350,000,000				0
Unused Portion	0				0
Unamortized debt issuance costs	4,176,000				0
Unamortized original issuance discount	$ 3,664,000				$ 0