v3.25.3

Fair Value - Schedule of Fair Value Hierarchy of Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule of Fair Value Hierarchy of Investments [Line Items]
First-lien senior secured debt investments	$ 2,216,511	$ 1,972,406
Equity investments	39,002	22,737
Investments in money market funds	29,765	48,683
Total Investments	2,285,278	2,043,826
Level 1 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
First-lien senior secured debt investments
Equity investments
Investments in money market funds	29,765	48,683
Total Investments	29,765	48,683
Level 2 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
First-lien senior secured debt investments	66,002	253,224
Equity investments
Investments in money market funds
Total Investments	66,002	253,224
Level 3 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
First-lien senior secured debt investments	2,150,509	1,719,182
Equity investments	39,002	22,737
Investments in money market funds
Total Investments	2,189,511	$ 1,741,919
Interest Rate Swaps [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
Total Investments	176
Total	2,285,454
Interest Rate Swaps [Member] \| Level 1 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
Total Investments
Total	29,765
Interest Rate Swaps [Member] \| Level 2 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
Total Investments	176
Total	66,178
Interest Rate Swaps [Member] \| Level 3 [Member]
Schedule of Fair Value Hierarchy of Investments [Line Items]
Total Investments
Total	$ 2,189,511

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Sum of the carrying amounts as of the balance sheet date of all investments.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Kayne Anderson BDC, Inc. 10-Q