Derivatives - Open Forward Foreign Currency Contract (Details) € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	Mar. 31, 2025 CAD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2025 GBP (£)	Mar. 31, 2025 EUR (€)	Mar. 31, 2025 AUD ($)	Sep. 30, 2024 CAD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2024 GBP (£)	Sep. 30, 2024 EUR (€)	Sep. 30, 2024 AUD ($)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited
Open Forward Foreign Currency Contract [Line Items]
Unrealized Appreciation		$ 2,302					$ 5,695
Unrealized Depreciation		(1,651)					(5,469)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 1/30/2026
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				€ 3,900					€ 3,900
Currency to be purchased		4,371					4,371
Unrealized Appreciation		80					0
Unrealized Depreciation		0					(45)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 11/12/2024
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €									14,650
Currency to be purchased							17,567
Unrealized Appreciation							1,225
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 12/23/2024
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €									12,400
Currency to be purchased							14,586
Unrealized Appreciation							732
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 12/9/2024
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold						$ 5,200
Currency to be purchased							4,245
Unrealized Appreciation							390
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/2/2026
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | £			£ 21,900					£ 21,900
Currency to be purchased		27,811					27,811
Unrealized Appreciation		0					0
Unrealized Depreciation		(409)					(1,244)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/27/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €									26,000
Currency to be purchased							31,803
Unrealized Appreciation							2,654
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/5/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €									7,900
Currency to be purchased							8,682
Unrealized Appreciation							0
Unrealized Depreciation							(152)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/5/2026 Contract 1
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				35,000					35,000
Currency to be purchased		39,008					39,008
Unrealized Appreciation		495					0
Unrealized Depreciation		0					(618)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 2/5/2026 Contract 2
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold					$ 26,100					$ 26,100
Currency to be purchased		17,179					17,179
Unrealized Appreciation		805					0
Unrealized Depreciation		0					(761)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 3/17/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | £								5,600
Currency to be purchased							7,321
Unrealized Appreciation							0
Unrealized Depreciation							(152)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 3/31/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | £								13,945
Currency to be purchased							19,149
Unrealized Appreciation							522
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 5/12/2027
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				14,650
Currency to be purchased		16,498
Unrealized Appreciation		70
Unrealized Depreciation		0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 5/27/2027
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				20,300
Currency to be purchased		22,346
Unrealized Appreciation		0
Unrealized Depreciation		(390)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/18/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold						7,000
Currency to be purchased							5,386
Unrealized Appreciation							172
Unrealized Depreciation							0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/18/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold	$ 7,000
Currency to be purchased		5,386
Unrealized Appreciation		485
Unrealized Depreciation		0
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/21/2025 Contract 1
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | £			8,750					8,750
Currency to be purchased		10,667					10,667
Unrealized Appreciation		0					0
Unrealized Depreciation		(620)					(964)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/21/2025 Contract 2
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				20,700					20,700
Currency to be purchased		22,363					22,363
Unrealized Appreciation		0					0
Unrealized Depreciation		(160)					(894)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/21/2025 Contract 3
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				10,100					10,100
Currency to be purchased		10,918					10,918
Unrealized Appreciation		0					0
Unrealized Depreciation		(72)					(430)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/30/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €									16,100
Currency to be purchased							17,902
Unrealized Appreciation							0
Unrealized Depreciation							(209)
Open Forward Foreign Currency Contract, Identifier [Axis]: Macquarie Bank Limited, Settlement Date 7/30/2025
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				16,100
Currency to be purchased		17,902
Unrealized Appreciation		367
Unrealized Depreciation		0
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets
Open Forward Foreign Currency Contract [Line Items]
Unrealized Appreciation		1,193
Unrealized Depreciation		(469)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Inc.
Open Forward Foreign Currency Contract [Line Items]
Unrealized Appreciation							0
Unrealized Depreciation							(2,222)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 1/20/2026 Contract 1
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				22,000					22,000
Currency to be purchased		24,594					24,594
Unrealized Appreciation		432					0
Unrealized Depreciation		0					(387)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 1/20/2026 Contract 2
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | €				€ 23,750					€ 23,750
Currency to be purchased		26,543					26,543
Unrealized Appreciation		459					0
Unrealized Depreciation		0					(425)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/2/2026
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold	$ 7,400					$ 7,400
Currency to be purchased		5,533					5,533
Unrealized Appreciation		302					0
Unrealized Depreciation		0					(4)
Open Forward Foreign Currency Contract, Identifier [Axis]: SMBC Capital Markets, Settlement Date 2/5/2026
Open Forward Foreign Currency Contract [Line Items]
Currency to be sold | £			£ 21,900					£ 21,900
Currency to be purchased		27,746					27,811
Unrealized Appreciation		0					0
Unrealized Depreciation		$ (469)					$ (1,406)