v3.26.1
Related Party Transactions (Details)
 3 Months Ended 9 Months Ended 58 Months Ended
Apr. 01, 2022
USD ($)
shares
Jun. 30, 2026
USD ($)
component
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
component
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
component
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Sep. 30, 2025
USD ($)
shares
Related Party Transaction [Line Items]              
Base management fee   $ 8,896,000 $ 6,085,000 $ 25,404,000 $ 16,494,000    
Base management fee irrevocably waived by investment adviser   5,661,000 3,872,000 16,166,000 10,495,000    
Subscriptions   $ 1,523,641,000   $ 1,523,641,000   $ 1,523,641,000 $ 1,523,641,000
Common stock, shares issued (in shares) | shares   81,864,005.909   81,864,005.909   81,864,005.909 71,236,992.933
Contributions   $ 1,183,947,000   $ 1,183,947,000   $ 1,183,947,000 $ 1,036,370,000
Related Party              
Related Party Transaction [Line Items]              
Income incentive fee incurred   6,850,000 5,101,000 19,972,000 13,908,000    
Income incentive fee irrevocably waived by the Investment adviser   3,425,000 2,551,000 9,986,000 6,954,000    
Incentive fee accrued (reversed)   0 (165,000) (1,357,000) 241,000    
Capital gain incentive fee payable   0   0   0 1,357,000
Capital gain incentive fee payment       0      
Investment company, reimbursable excess expense, amount paid   304,000   304,000   304,000 304,000
Related Party | Revolving Credit Facility              
Related Party Transaction [Line Items]              
Line of credit facility, maximum borrowing capacity   100,000,000   100,000,000   100,000,000  
Related Party | GGP Class B-P, LLC              
Related Party Transaction [Line Items]              
Subscriptions $ 100,000,000 $ 100,011,000   $ 100,011,000   $ 100,011,000  
Common stock, shares issued (in shares) | shares   6,667,366.664   6,667,366.664   6,667,366.664  
Contributions   $ 100,011,000   $ 100,011,000   $ 100,011,000  
Common stock, shares, issued, dividend reinvestment plan (in shares) | shares   139,172.373   139,172.373   139,172.373  
Related Party | GGP Class B-P, LLC | Common Stock | GGP Holdings LP              
Related Party Transaction [Line Items]              
Related party transaction, share transferred (in shares) | shares 700.000            
Investment Advisory Agreement | Related Party              
Related Party Transaction [Line Items]              
Management and service fee, number of components | component   2   2   2  
Management and service fees, base rate (in percent)       1.375%      
Management and service fees, cash equivalents maturity period       270 days      
Investment company, liquidity event, management and service fees, base rate waiver, threshold percentage of fair value of average adjusted gross assets (in percent)   0.50%   0.50%   0.50%  
Base management fee   $ 8,896,000 6,085,000 $ 25,404,000 16,494,000    
Base management fee irrevocably waived by investment adviser   $ 5,661,000 3,872,000 $ 16,166,000 10,495,000    
Number of inventive fee components | component   3   3   3  
Incentive fee accrued (reversed)   $ 0 0 $ 0 0    
Capital gain incentive fee payable   0   0   $ 0 0
Investment company, excess expense reimbursable   $ 330,000 $ 403,000 $ 1,613,000 $ 1,245,000    
Investment Advisory Agreement | Related Party | Periods Ending On Or Prior To The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate cap, percentage of cumulative pre-incentive fee net income (in percent)       10.00%      
Investment Advisory Agreement | Related Party | Periods Ending After The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate cap, percentage of cumulative pre-incentive fee net income (in percent)       20.00%      
Investment Management Agreement - Incentive Rate, Quarterly Hurdle Rate | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       1.75%      
Investment Management Agreement - Quarterly Incentive Rate, Criteria Not Met | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       0.00%      
Investment Management Agreement - Quarterly Incentive Rate, Criteria Not Met | Related Party | Periods Ending On Or Prior To The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       0.00%      
Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       100.00%      
Investment Management Agreement - Incentive Rate, Pre-Incentive Fee Net Investment Income Below Catch-Up | Related Party | Periods Ending On Or Prior To The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       100.00%      
Investment Advisory Agreement, Cumulative Pre-Incentive Fee Net Investment Income | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       20.00%      
Investment Advisory Agreement, Cumulative Pre-Incentive Fee Net Investment Income | Related Party | Periods Ending On Or Prior To The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       10.00%      
Investment Advisory Agreement, Capital Gain Incentive Fee Base | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       20.00%      
Investment company, liquidity event, management and service fees, incentive rate waiver, threshold of capital gain incentive fee base (in percent)   10.00%   10.00%   10.00%  
Investment Advisory Agreement, Capital Gain Incentive Fee Base | Related Party | Periods Ending On Or Prior To The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       10.00%      
Investment Advisory Agreement, Capital Gain Incentive Fee Base | Related Party | Periods Ending After The Date Of The Closing Of The Liquidity Event              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       20.00%      
Investment Advisory Agreement, Subordinated Liquidation Incentive Fee Base | Related Party              
Related Party Transaction [Line Items]              
Management and service fees, incentive rate (in percent)       10.00%      
Administration Agreement | Related Party              
Related Party Transaction [Line Items]              
Accounts payable and other liabilities   $ 896,000   $ 896,000   $ 896,000 606,000
Investment, Adviser | Related Party              
Related Party Transaction [Line Items]              
Organization cost and professional fee           166,000  
Investment company, excess expense reimbursable       700,000      
Expenses Paid | Related Party              
Related Party Transaction [Line Items]              
Accounts payable and other liabilities   $ 480,000   $ 480,000   $ 480,000 $ 585,000
Conversion To Maryland Corporation, Acquisition Of Stock | Related Party | GGP Holdings LP              
Related Party Transaction [Line Items]              
Sale of stock, number of shares issued in transaction (in shares) | shares 700.000            
Subscriptions $ 11,000