Derivatives - Schedule of Interest Rate Swaps (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Sep. 30, 2025
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited
Derivative [Line Items]
Unrealized appreciation	$ 898	$ 0
Unrealized depreciation	(1,589)	(7,366)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited 2
Derivative [Line Items]
Unrealized appreciation	0
Unrealized depreciation	(662)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 1/30/2026
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(235)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/2/2026
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(1,615)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/2/2028
Derivative [Line Items]
Unrealized appreciation	898
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/5/2026 Contract 1
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(2,338)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/5/2026 Contract 2
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(109)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 5/12/2027
Derivative [Line Items]
Unrealized appreciation	0	0
Unrealized depreciation	(452)	(1,079)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 5/27/2027
Derivative [Line Items]
Unrealized appreciation	0	0
Unrealized depreciation	$ (1,137)	$ (1,990)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 6/15/2029
Derivative [Line Items]
Company receives	5.881%	5.881%
Company pays	2.012%	2.012%
Notional amount	$ 150,000	$ 150,000
Unrealized appreciation	0	2,343
Unrealized depreciation	(662)	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services
Derivative [Line Items]
Unrealized appreciation	2,367
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, LLC
Derivative [Line Items]
Unrealized appreciation	183
Unrealized depreciation	$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, LLC, Settlement Date 6/1/2031
Derivative [Line Items]
Company receives	6.25%
Company pays	2.185%
Notional amount	$ 75,000
Unrealized appreciation	183
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 5/25/2028
Derivative [Line Items]
Unrealized appreciation	334
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 5/26/2028 Contract 1
Derivative [Line Items]
Unrealized appreciation	207
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 5/26/2028 Contract 2
Derivative [Line Items]
Unrealized appreciation	541
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 5/30/2028
Derivative [Line Items]
Unrealized appreciation	702
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 8/14/2026 Contract 1
Derivative [Line Items]
Unrealized appreciation	60
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Morgan Stanley Capital Services, Settlement Date 8/14/2026 Contract 2
Derivative [Line Items]
Unrealized appreciation	523
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Regions Bank
Derivative [Line Items]
Unrealized appreciation	562
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Regions Bank 2
Derivative [Line Items]
Unrealized appreciation	125
Unrealized depreciation	$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: Regions Bank, Settlement Date 6/1/2031
Derivative [Line Items]
Company receives	6.25%
Company pays	2.203%
Notional amount	$ 75,000
Unrealized appreciation	125
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Regions Bank., Settlement Date 8/14/2026 Contract 1
Derivative [Line Items]
Unrealized appreciation	39
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Regions Bank., Settlement Date 8/14/2026 Contract 2
Derivative [Line Items]
Unrealized appreciation	523
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets
Derivative [Line Items]
Unrealized appreciation	4,134	185
Unrealized depreciation	0	(5,432)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc
Derivative [Line Items]
Unrealized appreciation	2,937	18,065
Unrealized depreciation	$ (8,905)	(689)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc and Macquarie Bank Limited
Derivative [Line Items]
Unrealized appreciation		2,343
Unrealized depreciation		$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 11/5/2028 Contract 1
Derivative [Line Items]
Company receives	7.31%
Company pays	3.327%
Notional amount	$ 225,000
Unrealized appreciation	0
Unrealized depreciation	$ (619)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 11/5/2028 Contract 2
Derivative [Line Items]
Company receives	7.31%
Company pays	2.835%
Notional amount	$ 225,000
Unrealized appreciation	1,860
Unrealized depreciation	$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 11/5/2028 contract 1
Derivative [Line Items]
Company receives		7.31%
Company pays		3.327%
Notional amount		$ 225,000
Unrealized appreciation		3,513
Unrealized depreciation		$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 11/5/2028 contract 2
Derivative [Line Items]
Company receives		7.31%
Company pays		2.835%
Notional amount		$ 225,000
Unrealized appreciation		6,772
Unrealized depreciation		$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 12/5/2028
Derivative [Line Items]
Company receives	5.05%	5.05%
Company pays	1.723%	1.723%
Notional amount	$ 250,000	$ 250,000
Unrealized appreciation	0	0
Unrealized depreciation	$ (4,249)	$ (689)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 6/1/2031
Derivative [Line Items]
Company receives	6.25%
Company pays	2.171%
Notional amount	$ 350,000
Unrealized appreciation	1,077
Unrealized depreciation	$ 0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc, Settlement Date 6/15/2029
Derivative [Line Items]
Company receives	6.248%	6.248%
Company pays	2.444%	2.444%
Notional amount	$ 600,000	$ 600,000
Unrealized appreciation	0	7,780
Unrealized depreciation	(4,037)	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 1/20/2026 Contract 1
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(1,367)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 1/20/2026 Contract 2
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(1,483)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 1/20/2028
Derivative [Line Items]
Unrealized appreciation	469
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 11/23/2027
Derivative [Line Items]
Unrealized appreciation	418
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/2/2026
Derivative [Line Items]
Unrealized appreciation		185
Unrealized depreciation		0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/2/2028
Derivative [Line Items]
Unrealized appreciation	358
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/4/2028
Derivative [Line Items]
Unrealized appreciation	831
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/5/2026
Derivative [Line Items]
Unrealized appreciation		0
Unrealized depreciation		(1,672)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 5/24/2028
Derivative [Line Items]
Unrealized appreciation	327
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 5/25/2028 Contract 1
Derivative [Line Items]
Unrealized appreciation	401
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 5/25/2028 Contract 2
Derivative [Line Items]
Unrealized appreciation	299
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 5/27/2027
Derivative [Line Items]
Unrealized appreciation	514	0
Unrealized depreciation	0	$ (910)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 8/14/2026
Derivative [Line Items]
Unrealized appreciation	517
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank
Derivative [Line Items]
Unrealized appreciation	2,300
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 1/20/2028
Derivative [Line Items]
Unrealized appreciation	591
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 10/28/2026
Derivative [Line Items]
Unrealized appreciation	59
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 2/4/2028
Derivative [Line Items]
Unrealized appreciation	4
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 5/25/2028
Derivative [Line Items]
Unrealized appreciation	179
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 5/26/2028 Contract 1
Derivative [Line Items]
Unrealized appreciation	257
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 5/26/2028 Contract 2
Derivative [Line Items]
Unrealized appreciation	528
Unrealized depreciation	0
Open Forward Foreign Currency Contract, Identifier [Axis]: Wells Fargo Bank, N.A., Settlement Date 5/30/2028
Derivative [Line Items]
Unrealized appreciation	682
Unrealized depreciation	$ 0

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Fixed interest rate related to the interest rate derivative.

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Nominal or face amount used to calculate payment on derivative.

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