Fair Value Measurement - Summary of Changes in Fair Value of Level 3 Assets By Investment Type (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]		Gain (Loss) on Investments
Net Change in Unrealized Appreciation (Depreciation) for assets still held		$ 12,841	$ (1,268)
1st Lien/Senior Secured Debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net Change in Unrealized Appreciation (Depreciation) for assets still held		14,251	(1,248)
1st Lien/Last-Out Unitranche
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net Change in Unrealized Appreciation (Depreciation) for assets still held		(110)	(14)
2nd Lien/Senior Secured Debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net Change in Unrealized Appreciation (Depreciation) for assets still held		358	(6)
Preferred Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net Change in Unrealized Appreciation (Depreciation) for assets still held		(1,736)
Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net Change in Unrealized Appreciation (Depreciation) for assets still held		78
Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance		1,605,348
Purchases	[1]	2,845,285	898,406
Net Realized Gain (Loss)		(4,149)	2
Net Change in Unrealized Appreciation (Depreciation)		18,105	(1,268)
Sales and Settlements	[1]	(199,617)	(2,773)
Net Amortization of Premium/Discount		8,501	990
Transfers In	[2]	518
Ending Balance		4,273,991	895,357
Level 3 | 1st Lien/Senior Secured Debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance		1,418,647
Purchases	[1]	2,750,055	824,002
Net Realized Gain (Loss)		(4,149)	2
Net Change in Unrealized Appreciation (Depreciation)		19,515	(1,248)
Sales and Settlements	[1]	(199,617)	(2,773)
Net Amortization of Premium/Discount		8,104	969
Transfers In	[2]	518
Ending Balance		3,993,073	820,952
Level 3 | 1st Lien/Last-Out Unitranche
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance		166,684
Purchases	[1]	84,979	54,404
Net Change in Unrealized Appreciation (Depreciation)		(110)	(14)
Net Amortization of Premium/Discount		359	15
Ending Balance		251,912	54,405
Level 3 | 2nd Lien/Senior Secured Debt
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance		20,017
Purchases	[1]	1,936	20,000
Net Change in Unrealized Appreciation (Depreciation)		358	(6)
Net Amortization of Premium/Discount		38	6
Ending Balance		22,349	$ 20,000
Level 3 | Preferred Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Purchases	[1]	3,101
Net Change in Unrealized Appreciation (Depreciation)		(1,736)
Ending Balance		1,365
Level 3 | Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Purchases	[1]	5,214
Net Change in Unrealized Appreciation (Depreciation)		78
Ending Balance		$ 5,292

[1] Purchases may include PIK, securities received in corporate actions and restructurings. Sales and Settlements may include securities delivered in corporate actions and restructuring of investments.

[2] Transfers in (out) of Level 3, if any, are due to a decrease (increase) in the quantity and reliability of broker quotes obtained by the Investment Adviser.