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Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Sep. 30, 2025
--- | --- | ---
Commitments And Contingencies Disclosure [Line Items] |  |
Commitments to fund investments | $ 594.0 | $ 603.7
Maximum |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Unfunded commitments | $ 26.3 | 65.6
PSSL Subsidiary II | Maximum |  |
Commitments And Contingencies Disclosure [Line Items] |  |
Unfunded commitments |  | $ 93.8

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- Definition The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A + Details
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- Definition Amount of financial support committed by investment company to investee that is contractually required but not provided. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-16 + Details
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