Investment Company, Professional Fee Income

No definition available.

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- Definition

Amount of realized gain (loss) on investment in debt and equity securities.

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- Definition

Amount of fee income including, but not limited to, managerial assistance, servicing of investment, and origination and commitment fees.

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- Definition

Amount of interest capitalized during the period.

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- Definition

Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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- Definition

Amount due from parties in nontrade transactions, classified as other.

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- Definition

The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

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Amount of realized gain (loss) on investment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Transactions with Controlled Companies - Echelon Transportation LLC (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Interest Income		$ 581,932	$ 671,109	$ 770,312
Net realized gains (losses)		(223,719)	(518,682)	(417,443)
Interest Receivable	$ 17,350	$ 17,350	25,144
Echelon Transportation, LLC \| Common Equity
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Realized loss	22,738
Echelon Transportation, LLC \| Preferred Equity
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Realized loss	29,596
AerLift Leasing Limited \| Echelon Transportation, LLC
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership interest		60.70%
Reportable Legal Entities \| Subsidiaries \| Echelon Transportation, LLC
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Interest Income		$ 1,297	3,343	3,470
Interest Income Capitalized as PIK		0	1,260	0
Repayment of Loan Receivable		57,986	1,260	1,861
Net realized gains (losses)		(52,334)	0	0
Interest Receivable	0	0	1,378
Other Receivables	$ 9	9	24
Reportable Legal Entities \| Subsidiaries \| Echelon Transportation, LLC \| Prospect Administration
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Managerial Assistance		189	250	250
Reimbursement of Legal, Tax, etc		$ 37	$ 288	$ 6
Reportable Legal Entities \| Subsidiaries \| Echelon Transportation, LLC
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Ownership interest		100.00%