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Nature of operations [Line Items].

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Date when an entity was incorporated

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- Definition

Face amount or stated value per share of common stock.

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Date the operations of the entity commenced, in YYYY-MM-DD format.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Organization - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Sep. 07, 2023	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Oct. 05, 2024
Nature Of Operations [Line Items]
Date of incorporation		Oct. 13, 2022
Common stock, par or stated value per share		$ 0.001		$ 0.001	$ 0.001
Stock issued during the period value new issues	$ 41,500	$ 113,337	$ 74,731
Stock issued during the period shares new issues	1,661,350	4,505,908	2,989,257
Date of commencement of operations		Oct. 11, 2023
Advisor [Member]
Nature Of Operations [Line Items]
Stock issued during the period for shares services	1,000
Sale of stock issue price per share	$ 25
Maximum [Member]
Nature Of Operations [Line Items]
Earnings before interest tax depreciation and amortization of investee companies		$ 100,000
Minimum [Member]
Nature Of Operations [Line Items]
Earnings before interest tax depreciation and amortization of investee companies		$ 25,000
Twenty Six L DL Funding [Member]
Nature Of Operations [Line Items]
Date of incorporation		Aug. 04, 2023
Twenty Six North BDC CA SPV LLC [Member]
Nature Of Operations [Line Items]
Date of incorporation		Feb. 28, 2024