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Debt - Unsecured Notes and Notes Assumed in the Mergers (Details)												6 Months Ended	12 Months Ended
	May 21, 2026 USD ($)	Jan. 15, 2026 USD ($)	Jul. 22, 2025 USD ($)	May 15, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 22, 2024 USD ($)	Feb. 21, 2024 USD ($)	Jan. 22, 2024 USD ($)	Jan. 21, 2023 USD ($)	Apr. 26, 2021 USD ($)	Dec. 08, 2020 USD ($)	Dec. 11, 2021	Dec. 31, 2024 USD ($)	Jun. 30, 2026 USD ($)	Apr. 29, 2026 USD ($)	Apr. 16, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jul. 29, 2025 USD ($)	Nov. 19, 2024 USD ($)	Feb. 09, 2024 USD ($)	Jul. 29, 2023 USD ($)	Dec. 22, 2022 USD ($)	Jul. 21, 2022 USD ($)	Oct. 13, 2021 USD ($)	Aug. 17, 2021 USD ($)	Jun. 11, 2021 USD ($)	Jul. 23, 2020 USD ($)	Jan. 22, 2020 USD ($)	Oct. 08, 2019 USD ($)	Apr. 10, 2019 USD ($)
Debt Instrument [Line Items]
Notional Amount	$ 400,000,000.0
Fixed interest rate	6.30%
Basis spread on variable rate	2.209%
Designated as Hedging Instrument
Debt Instrument [Line Items]
Notional Amount														$ 2,750,000,000			$ 1,980,000,000
Interest rate swaps 2027 Notes
Debt Instrument [Line Items]
Notional Amount																														$ 400,000,000.0
Fixed interest rate																														5.25%
Basis spread on variable rate																														3.051%
Debt periodic payment													$ 6,600,000
Interest Rate Swap 2027 Notes
Debt Instrument [Line Items]
Notional Amount										$ 500,000,000.0
Fixed interest rate										2.625%
Basis spread on variable rate										1.769%
Interest Rate Swap 2027 Notes | Designated as Hedging Instrument
Debt Instrument [Line Items]
Notional Amount		$ 13,100,000
Basis spread on variable rate														0.907%
Interest Rate Swap, 2029 Notes
Debt Instrument [Line Items]
Notional Amount																		$ 3,900,000	$ 400,000,000.0	$ 600,000,000.0
Fixed interest rate																			5.95%	5.95%
Basis spread on variable rate																				2.118%
Interest Rate Swap 2029 Notes | Designated as Hedging Instrument
Debt Instrument [Line Items]
Notional Amount		500,000,000
Basis spread on variable rate														2.255%
Interest Rate Swap 2029 Notes | Designated as Hedging Instrument
Debt Instrument [Line Items]
Basis spread on variable rate														1.922%
Interest Rate Swap 2030 Notes
Debt Instrument [Line Items]
Notional Amount				$ 500,000,000.0
Fixed interest rate				6.20%
Interest rate swaps 2030 Notes | Designated as Hedging Instrument
Debt Instrument [Line Items]
Basis spread on variable rate														2.392%
2024 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed							$ 400,000,000.0																							$ 400,000,000.0
Interest rate, stated percentage																														5.25%
Debt asset coverage (in percentage)						100.00%	100.00%
Redeemed principal amount						$ 400,000,000.0
CLO XIV | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed																													$ 425,000,000.0
Interest rate, stated percentage																													4.00%
Debt repaid					$ 425,000,000.0
Percentage of principal amount repaid					100.00%
July 2025 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed																												$ 500,000,000.0
Interest rate, stated percentage			100.00%																									3.75%
Debt periodic payment			$ 500,000,000.0
2026 Notes
Debt Instrument [Line Items]
Debt periodic payment		$ 500,000,000.0
Principal payment percentage		100.00%
2026 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed																	500,000,000										$ 500,000,000.0
Interest rate, stated percentage																											4.25%
July 2026 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed											$ 1,000,000,000.00			$ 1,000,000,000			1,000,000,000
Interest rate, stated percentage											3.40%
Debt asset coverage (in percentage)											100.00%
Basis points											0.0050
2027 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed										$ 500,000,000.0				500,000,000			500,000,000
Interest rate, stated percentage										2.625%
Debt asset coverage (in percentage)										100.00%
Basis points										0.0030
2028 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed														850,000,000			850,000,000								$ 400,000,000.0	$ 450,000,000.0
Interest rate, stated percentage																									2.875%	2.875%
Debt asset coverage (in percentage)												100.00%
Basis points																									0.0030
September 2028 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed														400,000,000		$ 400,000,000.0
Interest rate, stated percentage																6.45%
Notional Amount															$ 400,000,000.0
Fixed interest rate															6.45%
Basis spread on variable rate															2.664%
Basis points																0.0045
2029 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed								$ 600,000,000.0						1,000,000,000			1,000,000,000		$ 400,000,000.0
Interest rate, stated percentage																			5.95%
Debt asset coverage (in percentage)								100.00%
Basis points								0.0035
2030 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed				$ 500,000,000.0										500,000,000			500,000,000
Interest rate, stated percentage				6.20%
Debt asset coverage (in percentage)				100.00%
Basis points				0.0040
2031 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed	$ 400,000,000.0
Interest rate, stated percentage	6.30%
Debt asset coverage (in percentage)	100.00%
Basis points	0.0035
April 2027 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed														325,000,000			325,000,000							$ 325,000,000.0
Interest rate, stated percentage																								3.125%
Series 2022A Notes, Tranche A | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed																						$ 60,000,000.0	$ 142,000,000.0
Interest rate, stated percentage																						7.58%	7.50%
Series 2022A Notes, Tranche B | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed																							$ 190,000,000.0
Interest rate, stated percentage																							7.58%
Series 2023A Notes Due On June 29, 2028 | Merger Agreement
Debt Instrument [Line Items]
Minimum net worth									$ 800,000,000.0
Asset coverage ratio, minimum									1.50
Series 2022A Notes | Senior Notes | Merger Agreement
Debt Instrument [Line Items]
Below investment grade event, interest rate									1.00%
Secured debt ratio event, interest rate									1.50%
Below investment grade and secured debt ratio events, interest rate									2.00%
June 2028 Notes | Unsecured Debt
Debt Instrument [Line Items]
Aggregate Principal Committed														$ 100,000,000			$ 100,000,000				$ 100,000,000.0
Interest rate, stated percentage																					8.10%

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