Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) pursuant to the requirements for reporting on Form 10-Q and Regulation S-X, as appropriate. These unaudited consolidated financial statements (“consolidated financial statements”) reflect adjustments that in the opinion of the Company are necessary for the fair presentation of the financial position and results of operations as of and for the periods presented herein and notes thereto should be read in conjunction with the consolidated financial statements and notes thereto in the Company's Form 10-K for the year ended December 31, 2024, as filed with the SEC. The Company is considered an investment company under U.S. GAAP and therefore applies the accounting and reporting guidance applicable to investment companies.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements. Actual results could differ from those estimates, and such differences could be material.
Consolidation	Consolidation In accordance with U.S. GAAP guidance on consolidation, the Company will generally not consolidate its investment in a portfolio company other than an investment company subsidiary or a controlled operating company whose business consists of providing services to the Company. Accordingly, the Company consolidated the accounts of the Company’s wholly-owned subsidiaries, ODL SPV, ODL Blocker and OFDL Holdings, in its consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation.
Segments	Segments In accordance with U.S. GAAP guidance on segment reporting, the Company has determined that its operations comprise a single reporting segment. As a result, the Company’s segment accounting policies are the same as described herein and the Company does not have any intra-segment sales and transfers of assets. The Company operates through a single operating and reporting segment with an investment objective to generate current income while preserving capital and, to a lesser extent, capital appreciation through debt and equity investments. The chief executive officer of the Company acts as the Company’s chief operating decision maker (“CODM”). The CODM assesses the performance and makes operating decisions of the Company on a consolidated basis primarily based on the Company’s net increase or decrease in net assets resulting from operations. In addition to numerous other factors and metrics, the CODM utilizes net income as a key metric in determining the amount of dividends to be distributed to the Company’s shareholders. As the Company’s operations comprise of a single reporting segment, the segment assets are reflected on the accompanying consolidated statements of assets and liabilities as “total assets” and the significant segment expenses are listed on the accompanying consolidated statements of operations.
Cash and Cash Equivalents and Restricted Cash	Cash and Cash Equivalents and Restricted Cash Cash consists of deposits held at a custodian bank. Cash equivalents consists of money market investments. The carrying amounts for money market investments approximate fair value. Restricted cash consists of deposits pledged as collateral, if any. Cash, cash equivalents and restricted cash are held at major financial institutions and, at times, may exceed the insured limits under applicable law.
Investments	Investments Investment transactions are recorded on the trade date. Realized gains or losses on investments are calculated using the specific identification method as the difference between the net proceeds received (excluding prepayment fees, if any) and the amortized cost basis of the investment without regard to unrealized appreciation or depreciation previously recognized, and include investments charged off during the period, net of recoveries. Net change in unrealized appreciation or depreciation reflects the change in portfolio investment values during the reporting period, including any reversal of previously recorded unrealized appreciation or depreciation when gains or losses are recognized.
Valuation Procedures	Valuation Procedures The Board has designated the Adviser as its “valuation designee” pursuant to Rule 2a-5 under the 1940 Act, and in that role the Adviser is responsible for performing fair value determinations relating to all of the Company’s investments, including periodically assessing and managing any material valuation risks and establishing and applying fair value methodologies, in accordance with valuation policies and procedures that have been approved by the Board. Although the Board designated the Adviser as “valuation designee,” the Board ultimately is responsible for fair value determinations under the 1940 Act. Investments for which market quotes are readily available are typically valued at the average bid and ask prices of such market quotes, which are generally obtained from independent pricing services, broker-dealers or market makers. To validate market quotes, the Company will utilize a number of factors to determine if the quotes are representative of fair value, including the source and number of the quotes. Debt and equity securities for which market quotes are not readily available or are deemed not to represent fair value, are valued at fair value as determined in good faith by the Adviser, in accordance with a valuation policy approved by the Board and a consistently applied valuation process, which includes input from management and independent valuation firms that have been engaged to assist in the valuation of portfolio investments without readily available market quotes. Accordingly, such investments go through the Company’s multi-step valuation process as described below. Investments purchased within the quarter before the valuation date may each be valued at cost, unless such valuation, in the judgment of the Adviser, does not represent fair value. The Adviser undertakes a multi-step valuation process, which includes, among other procedures, the following: • The Company’s quarterly valuation process begins with each portfolio company or investment being initially valued using certain inputs, among others, provided by investment professionals of Onex Credit, an affiliate of the Adviser, that are responsible for the portfolio investment; • Preliminary valuation conclusions are then documented and discussed with the Adviser's valuation committee; • At least once annually, the valuation for each portfolio investment is reviewed by an independent valuation firm. In each case, the Company’s independent third party valuation firms consider observable market inputs together with significant unobservable inputs in arriving at their valuation recommendations for such investments; and • The Adviser then reviews the valuations and determines the fair value of each investment. As part of the valuation process, the Adviser may consider other information and may use valuation methods including but not limited to (i) market quotes for similar investments, (ii) recent trading activity, (iii) discounting forecasted cash flows of the investment, (iv) models that consider the implied yields from comparable debt, (v) third party appraisals, (vi) sale negotiations and purchase offers received from independent parties and (vii) estimated value of underlying assets to be received in any liquidation or restructuring. As part of the valuation process, the Adviser will primarily use the “income approach” by using a present value technique that discounts the estimated contractual cash flows. Discount rates applied to estimated contractual cash flows for an underlying asset vary by specific investment, industry, priority and nature of the debt security and are assessed relative to leveraged loan and high-yield bond indices at the valuation date. The use of market indices as part of the valuation methodology is subject to adjustment for many factors, including priority, collateral used as security, structure, performance and other quantitative and qualitative attributes of the asset being valued. When an external event such as a purchase transaction, public offering or subsequent equity or debt sale occurs, the Board or its delegates will consider whether the pricing indicated by the external event corroborates its valuation. When the Company determines its NAV as of the last day of a month that is not also the last day of a calendar quarter, the Company intends to update the value of securities with reliable market quotes to the most recent market quote. For securities without reliable market quotes, the Adviser’s valuation team will generally value such assets at the most recent quarterly valuation unless the Adviser determines that a significant observable change has occurred since the most recent quarter end with respect to the investment (which determination may be as a result of a material event at a portfolio company, material change in market spreads, secondary market transaction in the securities of an investment or otherwise). If the Adviser’s valuation team determines such a change has occurred with respect to one or more investments, the Adviser’s valuation team will determine whether to update the value for each relevant investment, using positive assurance from an independent valuation firm where applicable in accordance with our valuation policy, pursuant to authority delegated by the Board. Financial Accounting Standards Board Accounting Standards Codification Topic 820: Fair Value Measurements and Disclosures (“ASC 820”) specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. ASC 820 also provides guidance regarding a fair value hierarchy, which prioritizes information used to measure fair value and the effect of fair value measurements on earnings and provides for enhanced disclosures determined by the level of information used in the valuation. The Company classifies the inputs used to measure fair values into the following hierarchy: • Level 1—Valuations are based on quoted prices in active markets for identical assets or liabilities that are accessible to the Company at the measurement date. • Level 2—Valuations are based on similar assets or liabilities in active markets, or quoted prices identical or similar assets or liabilities in markets that are not active or for which all significant inputs are observable, either directly or indirectly and model-based valuation techniques for which all significant inputs are observable. • Level 3—Valuations are based on inputs that are unobservable and significant to the overall fair value measurement. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models incorporating significant unobservable inputs, such as discounted cash flow models and other similar valuation techniques. The valuation of Level 3 assets and liabilities generally requires significant management judgment due to the inability to observe inputs to valuation. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment’s level within the fair value hierarchy is based on the lowest level of observable input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and it considers factors specific to the investment. Transfers between levels, if any, are recognized at the beginning of the year in which the transfer occurs. In addition to using the above inputs in investment valuations, the Company applies the valuation policy approved by its Board that is consistent with ASC 820. Consistent with the valuation policy, the Company evaluates the source of inputs, including any markets in which its investments are trading (or any markets in which securities with similar attributes are trading), in determining fair value. When a security is valued based on prices provided by reputable dealers or pricing services (that is, broker quotes), the Company subjects those prices to various additional criteria in making the determination as to whether a particular investment would qualify for treatment as a Level 2 or Level 3 investment. For example, the Company reviews pricing provided by dealers or pricing services in order to determine if observable market information is being used, versus unobservable inputs. Some additional factors considered include the number of prices obtained as well as an assessment as to their quality, such as the depth of the relevant market relative to the size of the Company’s position. A determination of fair value involves subjective judgments and estimates and depends on the facts and circumstances present at each valuation date. Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company’s investments may fluctuate from period to period. Additionally, the fair value of such investments may differ significantly from the values that would have been used had a ready market existed for such investments and may differ materially from the values that may ultimately be realized. Further, such investments are generally less liquid than publicly traded securities and may be subject to contractual and other restrictions on resale. If the Company were required to liquidate a portfolio investment in a forced or liquidation sale, it could realize amounts that are different from the amounts presented and such differences could be material. In addition, changes in the market environment, including the impact of changes in broader market indices and credit spreads, and other events that may occur over the life of the investments may cause the gains or losses ultimately realized on these investments to be different than the unrealized gains or losses reflected herein.
Revenue Recognition	Revenue Recognition Interest income is recorded on an accrual basis and includes the accretion of discounts and amortization of premiums. Discounts from and premiums to par value on debt investments purchased are accreted/amortized into interest income over the life of the respective security using the effective interest method. The amortized cost of debt investments represents the original cost, including origination fees and upfront fees received that are deemed to be an adjustment to yield, adjusted for the accretion of discounts and amortization of premiums, if any. Loans are generally placed on non-accrual status when there is reasonable doubt that principal or interest will be collected in full. The Company considers many factors relevant to an investment when placing it on or removing it from non-accrual status including, but not limited to, the delinquency status of the investment, economic and business conditions, the overall financial condition of the underlying investment, the value of the underlying collateral, bankruptcy status, if any, and any other facts or circumstances relevant to the investment. Accrued interest is generally reversed when a loan is placed on non-accrual status. Payments received on non-accrual loans may be recognized as income or applied to principal depending upon management’s judgment regarding collectability of the outstanding principal and interest. Non-accrual loans may be restored to accrual status when past due principal and interest is paid current and are likely to remain current based on management’s judgment. Dividend income on preferred equity securities is recorded on the accrual basis to the extent that such amounts are payable by the portfolio company and are expected to be collected. Dividend income on common equity securities is recorded on the record date for private portfolio companies or on the ex-dividend date for publicly-traded portfolio companies. Loan origination fees, original issue discount and market discount are capitalized, and the Company amortizes such amounts as interest income over the respective term of the loan or security. Upon the prepayment of a loan or security, any unamortized loan origination fees and original issue discount are recorded as interest income. The Company records prepayment premiums on loans and securities as fee income when it receives such amounts.
Payment-in-Kind Interest	Payment-in-Kind Interest Payment-in-kind (“PIK”) interest, computed at the contractual rate specified in each loan agreement, is added to the principal balance of the loan and recorded as interest income and generally becomes due at maturity. To maintain the Company’s status as a RIC, this non-cash source of income must be paid out to shareholders in the form of distributions, even though the Company has not yet collected the cash.
Deferred Financing Costs	Deferred Financing Costs Origination and other expenses related to the Company’s revolving credit facility are recorded as deferred financing costs and amortized as part of interest expense using the straight-line method over the stated life of the debt instrument.
Organization and Offering Costs	Organization and Offering Costs Organization costs include, among other things, the cost of incorporating, including the cost of legal services, printing, consulting services and other fees pertaining to the Company’s organization. Costs associated with the organization of the Company are expensed as incurred. Offering costs include legal expenses related to the preparation of the Company’s private placement memorandum in connection with the Company's offering of common shares. Offering costs are capitalized as deferred offering expenses and are amortized over twelve months from incurrence.
Earnings per Share	Earnings per Share Basic earnings per share is calculated by dividing net income or loss attributable to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated in the same manner, with further adjustments to reflect the dilutive effect of common share equivalents outstanding.
Income Taxes	Income Taxes The Company has elected to be regulated as a BDC under the 1940 Act. The Company has elected to be treated for U.S. federal income tax purposes, and intends to qualify annually, as a RIC. So long as the Company maintains its status as a RIC, it generally will not pay corporate-level U.S. federal income or excise taxes on any ordinary income or capital gains that it distributes at least annually to its shareholders as distributions. Rather, any tax liability related to income earned and distributed would represent obligations of the Company’s investors and would not be reflected in the consolidated financial statements of the Company. The Company evaluates tax positions taken or expected to be taken in the course of preparing its consolidated financial statements to determine whether the tax positions are “more likely than not” to be sustained by the applicable tax authority. Tax positions not deemed to meet the “more likely than not” threshold are reserved and recorded as a tax benefit or expense in the current year. All penalties and interest associated with income taxes are included in income tax expense. Conclusions regarding tax positions are subject to review and may be adjusted at a later date based on factors including, but not limited to, ongoing analyses of tax laws, regulations and interpretations thereof. To qualify for and maintain qualification as a RIC, the Company must, among other things, meet certain source of income and asset diversification requirements. In addition, to qualify for RIC tax treatment, the Company must distribute to its shareholders, for each taxable year, at least 90% of its “investment company taxable income” for that year, which is generally its ordinary income plus the excess, if any, of its realized net short-term capital gains over its realized net long-term capital losses. In addition, based on the excise tax distribution requirements, the Company is subject to a 4% nondeductible federal excise tax on undistributed income unless the Company distributes in a timely manner in each taxable year an amount at least equal to the sum of (1) 98% of its net ordinary income (taking into account certain deferrals and elections) for the calendar year, (2) 98.2% of capital gains in excess of capital losses (both long-term and short-term) for the one-year period ending October 31 in that calendar year and (3) any net ordinary income and capital gains in excess of capital losses for preceding years that were not distributed during such years. For this purpose, however, any net ordinary income or capital gains retained by the Company that is subject to corporate income tax is considered to have been distributed. The Company, at its discretion, may carry forward taxable income in excess of calendar year distributions and pay a 4% nondeductible U.S. federal excise tax on this income. The Company has analyzed the tax positions taken on federal and state income tax returns for all open tax years and has concluded that no provision for income tax for uncertain tax positions is required in the Company’s consolidated financial statements. The Company’s major tax jurisdictions are U.S. federal, New York State, and foreign jurisdictions where the Company makes significant investments. The Company’s federal and state income and federal excise tax returns for tax years for which the applicable statutes of limitations have not expired are subject to examination by the Internal Revenue Service and state departments of revenue.
Distributions to Common Shareholders	Distributions to Common Shareholders Distributions to the Company’s shareholders are recorded on the record date. The amount to be paid out as a distribution is determined by the Board and is generally based upon earnings estimated by the Adviser. Net realized capital gains, if any, would generally be distributed at least annually, although the Company may decide to retain such capital gains. The Company has adopted an “opt out” dividend reinvestment plan (“DRP”) for its shareholders. As a result, if the Company makes a cash distribution, its shareholders will have their cash distributions reinvested in additional shares of the Company including fractional shares as necessary, unless they specifically “opt out” of the DRP to receive the distribution in cash. Under the DRP, cash distributions to participating shareholders will be reinvested in additional shares of the Company at a purchase price equal to the net asset value per share as of the last day of the calendar quarter immediately preceding the date such distribution was declared. The Company may distribute taxable distributions that are payable in cash or shares at the election of each shareholder. Under certain applicable provisions of the Code and the U.S. Treasury regulations, distributions payable in cash or in common shares at the election of shareholders are treated as taxable distributions. As a result, a U.S. shareholder may be required to pay tax with respect to such distributions in excess of any cash received. If a U.S. shareholder sells the shares it receives in order to pay this tax, the sales proceeds may be less than the amount included in income with respect to the distribution, depending on the market price of the Company’s shares at the time of the sale. Furthermore, with respect to non-U.S. shareholders, the Company may be required to withhold U.S. tax with respect to such distributions, including in respect of all or a portion of such distribution that is payable in shares.
Foreign Currency Translation	Foreign Currency Translation Amounts denominated in foreign currencies are translated into U.S. dollars on the following basis: (1) all assets and liabilities denominated in foreign currencies are translated into U.S. dollars based upon currency exchange rates effective on the date of valuation; and (2) purchases and sales of investments, borrowings and repayments of such borrowings, and income and expense items denominated in foreign currencies are translated into U.S. dollars based upon currency exchange rates prevailing on the transaction dates. The portion of gains and losses on foreign investments resulting from fluctuations in foreign currencies is included in net realized and unrealized gain or loss from investments. Investments denominated in foreign currencies and foreign currency transactions may involve certain considerations and risks not typically associated with those of domestic origin. These risks include, but are not limited to, currency fluctuations and revaluations and future adverse political, social and economic developments, which could cause investments in foreign markets to be less liquid and prices more volatile than those of comparable U.S. companies or U.S. government securities.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The Company considers the applicability and impact of all accounting standard updates (“ASU”) issued by the Financial Accounting Standards Board (“FASB”). The Company has assessed currently issued ASUs and has determined that they are not applicable or expected to have minimal impact on its consolidated financial statements. In December 2023, the FASB issued ASU 2023 - 09, Improvements to Income Tax Disclosures ("ASU 2023-09"). ASU 2023-09 intends to improve the transparency of income tax disclosures and requires additional disaggregated disclosures on the entity’s effective tax rate reconciliation and additional details on income taxes paid. ASU 2023-09 is effective for fiscal years beginning after December 15, 2024 and is to be adopted on a prospective basis with the option to apply retrospectively. The Company is currently assessing the impact of this guidance; however, the Company does not expect a material impact to its consolidated financial statements.

Onex Direct Lending BDC Fund 10-Q