Borrowings (Additional Information) (Details) - USD ($)
$ in Thousands |
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3 Months Ended |
8 Months Ended |
9 Months Ended |
12 Months Ended |
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Nov. 25, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Sep. 11, 2024 |
Sep. 30, 2025 |
Dec. 31, 2025 |
May 15, 2025 |
Oct. 19, 2024 |
Sep. 12, 2024 |
Aug. 09, 2024 |
Jul. 31, 2024 |
Jan. 19, 2024 |
| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
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$ 2,775,000
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$ 2,775,000
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| Minimum asset coverage ratio |
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150.00%
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| Asset coverage ratio |
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189.45%
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[1] |
228.96%
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[1] |
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193.77%
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| Interest rate description |
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the Margin was equal to 1.90% with respect to the portion of the SG Facility used to finance acquisitions of broadly-syndicated loans (subject to a maximum of 20%) and 2.40% with respect to the portion of the SG Facility used to finance acquisitions of middle-market loans, subject to a step-up of 2.00% following the occurrence of an event of default.
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| Unpaid Contractual Interest |
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$ 7,029
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$ 12,454
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| Unused commitment fees |
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$ 221
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$ 219
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| Average effective interest rate |
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5.73%
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6.16%
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| Average borrowings outstanding |
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$ 2,282,764
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$ 895,635
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| Debt Instrument Carrying Value |
[2] |
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2,400,365
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2,145,441
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| Series A Senior Notes [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument Issued Principal |
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$ 500,000
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| Derivative, Fixed Interest Rate |
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5.76%
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| Derivative Basis Spread On Variable Rate |
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2.38%
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| Notional Amount |
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$ 500,000
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| Debt Instrument Accrued and Unpaid Interest |
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100.00%
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| LongTerm Debt Percentage Fixed Interest Rate |
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5.76%
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| Maximum [Member] | Loan Facility [Member] | Second Amendment [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument Carrying Value |
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$ 1,400,000
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| Maximum [Member] | Series A Senior Notes [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument Interest Rate Stated Percentage |
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2.00%
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| Minimum [Member] | Loan Facility [Member] | Second Amendment [Member] |
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| Debt Instrument [Line Items] |
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| Debt Instrument Carrying Value |
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$ 1,000,000
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| SG Facility [Member] |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
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1,400,000
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1,400,000
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$ 450,000
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| Interest rate description |
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the margin applicable to borrowings under the facility from 1.90% with respect to the portion of the SG Facility used to finance acquisitions of broadly-syndicated loans (subject to a maximum of 20%) and 2.40% with respect to the portion of the SG Facility used to finance acquisitions of middle-market loans, subject to a step-up of 2.00% following the occurrence of an event of default, to 1.85%, subject to a step-up of 2.00% following the occurrence of an event of default.
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| SG Facility [Member] | Maximum [Member] |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
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$ 250,000
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$ 750,000
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| Amount increases under certain conditions |
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1,750,000
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1,000,000
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| SG Facility [Member] | Minimum [Member] |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
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$ 1,000,000
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450,000
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| Amount increases under certain conditions |
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$ 1,000,000
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$ 750,000
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| Revolving Credit Facility [Member] |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
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$ 875,000
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$ 875,000
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$ 1,025,000
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| Average percentage of fee on undrawn amounts |
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0.375%
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| Aggregate principal committed |
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$ 675,000
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| Revolving Credit Facility [Member] | Maximum [Member] |
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| Debt Instrument [Line Items] |
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| Commitment Fee |
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0.375%
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| Increase of The Total Facility Amount |
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$ 875,000
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| Increase Of Provision |
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$ 1,312,000
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| Aggregate principal committed |
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725,000
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| Line of credit facility, variable interest rate |
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0.875%
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| Revolving Credit Facility [Member] | Maximum [Member] | ABR Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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0.75%
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| Line of credit facility, variable interest rate |
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1.875%
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| Revolving Credit Facility [Member] | Maximum [Member] | Other Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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1.75%
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| Revolving Credit Facility [Member] | Minimum [Member] |
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| Debt Instrument [Line Items] |
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| Commitment Fee |
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0.325%
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| Increase of The Total Facility Amount |
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$ 725,000
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| Increase Of Provision |
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$ 1,025,000
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| Aggregate principal committed |
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$ 675,000
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| Line of credit facility, variable interest rate |
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0.75%
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| Revolving Credit Facility [Member] | Minimum [Member] | ABR Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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0.65%
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| Line of credit facility, variable interest rate |
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1.75%
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| Revolving Credit Facility [Member] | Minimum [Member] | Other Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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1.65%
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| Senior Secured Revolving Credit Facility [Member] | Maximum [Member] | ABR Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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0.875%
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| Senior Secured Revolving Credit Facility [Member] | Maximum [Member] | Other Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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1.875%
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| Senior Secured Revolving Credit Facility [Member] | Minimum [Member] | ABR Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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0.775%
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| Senior Secured Revolving Credit Facility [Member] | Minimum [Member] | Other Loan [Member] |
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| Debt Instrument [Line Items] |
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| Reduction of Applicable Margin Interest Rate |
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1.775%
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