DEBT - Schedule of Debt Obligations (Details) € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)	Dec. 31, 2024 CAD ($)	Dec. 31, 2024 GBP (£)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 GBP (£)	Sep. 13, 2022 USD ($)	Feb. 11, 2022 USD ($)
Debt Instrument [Line Items]
Aggregate Principal Committed	$ 2,950,000				$ 2,420,000
Outstanding Principal	1,983,401				1,502,263
Unused Portion	964,770				917,484
CIBC Substriction Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate Principal Committed	0				0
Outstanding Principal	0				0
Unused Portion	0				0
BNP Funding Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate Principal Committed	600,000				600,000
Outstanding Principal	316,000				282,000
Unused Portion	284,000				318,000
Truist Credit Facility | Line of Credit
Debt Instrument [Line Items]
Aggregate Principal Committed	1,300,000	€ 3,298	$ 300	£ 1,020	1,120,000	€ 238	$ 0	£ 0
Outstanding Principal	617,401				520,263
Unused Portion	680,770				599,484
Outstanding letters of credit	1,828				253
2027 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	425,000				425,000					$ 425,000
Outstanding Principal	425,000				425,000
Unused Portion	0				0
Unamortized debt issuance costs	2,374				3,499
Unamortized original issuance discount	452				667
2025 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	275,000				275,000				$ 275,000
Outstanding Principal	275,000				275,000
Unused Portion	0				0
Unamortized debt issuance costs	856				2,065
Unamortized original issuance discount	0				0
2029 Notes | Senior Notes
Debt Instrument [Line Items]
Aggregate Principal Committed	350,000				0
Outstanding Principal	350,000				0
Unused Portion	0				0
Unamortized debt issuance costs	3,297				0
Unamortized original issuance discount	$ 3,398				$ 0