Organization	12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Note 1. Organization Apollo Origination II (UL) Capital Trust (the “Company,” “we,” “us,” or “our”) was organized as a Delaware statutory trust on June 26, 2024. We are a closed-end, externally managed, non-diversified management investment company that elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”) on January 28, 2025. In addition, for tax purposes, we have elected to be treated, and intend to qualify annually, as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). Prior to electing to be regulated as a BDC, pursuant to an Agreement and Plan of Reorganization (the “Reorganization Agreement”), the Company merged with AOP II Capital Trust Two, a Delaware statutory trust and a wholly-owned subsidiary of Apollo Direct Lending Fund II (Unlevered AIV), L.P. (formerly Apollo Origination Partnership II (Unlevered AIV), L.P.), a Cayman Islands exempted limited partnership (“Parent”), with the Company continuing as the surviving company and as a wholly-owned subsidiary of Parent (the “Merger”). Following the Merger, and pursuant to the terms of the Reorganization Agreement, the Company acquired all of the membership interests of AOP II Origination Holdings (UL), LLC, a Delaware limited liability company that held an investment portfolio (the “Investment Portfolio HoldCo”), from AOP II Intermediate Holdings (DC I), LLC, a Delaware limited liability company (the “Intermediate HoldCo”), which was all of Parent’s interest in Intermediate HoldCo (the “Investment Portfolio HoldCo Transfer”). The Investment Portfolio HoldCo Transfer resulted in the Company acquiring an investment portfolio from the Intermediate HoldCo (the “Investment Portfolio”). The Investment Portfolio HoldCo Transfer did not result in the acquisition of all or substantially all of Intermediate HoldCo’s assets. On December 31, 2024, Apollo Capital Management, L.P. purchased 60 common shares of beneficial interest of the Company (the “Shares”) at a price of $25.00 per share, as our initial capital. In connection with the Merger, these 60 Shares were cancelled on January 24, 2025. Further, on January 24, 2025, we issued 1 Share of the Company, which was reclassified into 18,310,208 Shares on January 27, 2025 following the Investment Portfolio HoldCo Transfer. Also, on January 21, 2025 we entered into a subscription agreement with an investor for $800 million in capital commitments, providing for the private placement of our Shares. Apollo Credit Management, LLC (the “Adviser” or “ACM”) is our Adviser and is an affiliate of Apollo Global Management, Inc. and its consolidated subsidiaries (“AGM”). The Adviser, subject to the overall supervision of the Board of Trustees of the Company (the “Board”), manages the day-to-day operations of the Company and will provide investment advisory services to the Company. Apollo Credit Management, LLC, as our administrator (the “Administrator”), provides, among other things, administrative services and facilities to the Company. Furthermore, the Administrator will offer to provide, on our behalf, managerial assistance to those portfolio companies to which we are required to provide such assistance. Our investment objective is to generate current income and, to a lesser extent, long-term capital appreciation. The Company expects to invest, directly or indirectly, globally across private credit opportunities, primarily investing in certain originated, secured loans or similar financial instruments, including bonds, debentures and other debt securities, made to or issued by corporate borrowers and issuers that generally generate on an annual basis $100 million or greater in earnings before interest, taxes, depreciation and amortization (“EBITDA”), and, to the extent applicable, equity-kickers or similar financial instruments issued, received or otherwise purchased in connection with such investment opportunities. While most of our investments will be in private U.S. companies (subject to compliance with BDC regulatory requirement to invest at least 70% of its assets in private U.S. companies), we also expect to invest from time to time in European and other non-U.S. companies. Our portfolio may also include equity interests such as common stock, preferred stock, warrants or options, which generally would be obtained as part of providing a broader financing solution.

Organization

12 Months Ended

Dec. 31, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1. Organization

Apollo Origination II (UL) Capital Trust (the “Company,” “we,” “us,” or “our”) was organized as a Delaware statutory trust on June 26, 2024. We are a closed-end, externally managed, non-diversified management investment company that elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”) on January 28, 2025. In addition, for tax purposes, we have elected to be treated, and intend to qualify annually, as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”).

Prior to electing to be regulated as a BDC, pursuant to an Agreement and Plan of Reorganization (the “Reorganization Agreement”), the Company merged with AOP II Capital Trust Two, a Delaware statutory trust and a wholly-owned subsidiary of Apollo Direct Lending Fund II (Unlevered AIV), L.P. (formerly Apollo Origination Partnership II (Unlevered AIV), L.P.), a Cayman Islands exempted limited partnership (“Parent”), with the Company continuing as the surviving company and as a wholly-owned subsidiary of Parent (the “Merger”). Following the Merger, and pursuant to the terms of the Reorganization Agreement, the Company acquired all of the membership interests of AOP II Origination Holdings (UL), LLC, a Delaware limited liability company that held an investment portfolio (the “Investment Portfolio HoldCo”), from AOP II Intermediate Holdings (DC I), LLC, a Delaware limited liability company (the “Intermediate HoldCo”), which was all of Parent’s interest in Intermediate HoldCo (the “Investment Portfolio HoldCo Transfer”). The Investment Portfolio HoldCo Transfer resulted in the Company acquiring an investment portfolio from the Intermediate HoldCo (the “Investment Portfolio”). The Investment Portfolio HoldCo Transfer did not result in the acquisition of all or substantially all of Intermediate HoldCo’s assets.

On December 31, 2024, Apollo Capital Management, L.P. purchased 60 common shares of beneficial interest of the Company (the “Shares”) at a price of $25.00 per share, as our initial capital. In connection with the Merger, these 60 Shares were cancelled on January 24, 2025. Further, on January 24, 2025, we issued 1 Share of the Company, which was reclassified into 18,310,208 Shares on January 27, 2025 following the Investment Portfolio HoldCo Transfer. Also, on January 21, 2025 we entered into a subscription agreement with an investor for $800 million in capital commitments, providing for the private placement of our Shares.

Apollo Credit Management, LLC (the “Adviser” or “ACM”) is our Adviser and is an affiliate of Apollo Global Management, Inc. and its consolidated subsidiaries (“AGM”). The Adviser, subject to the overall supervision of the Board of Trustees of the Company (the “Board”), manages the day-to-day operations of the Company and will provide investment advisory services to the Company.

Apollo Credit Management, LLC, as our administrator (the “Administrator”), provides, among other things, administrative services and facilities to the Company. Furthermore, the Administrator will offer to provide, on our behalf, managerial assistance to those portfolio companies to which we are required to provide such assistance.

Our investment objective is to generate current income and, to a lesser extent, long-term capital appreciation. The Company expects to invest, directly or indirectly, globally across private credit opportunities, primarily investing in certain originated, secured loans or similar financial instruments, including bonds, debentures and other debt securities, made to or issued by corporate borrowers and issuers that generally generate on an annual basis $100 million or greater in earnings before interest, taxes, depreciation and amortization (“EBITDA”), and, to the extent applicable, equity-kickers or similar financial instruments issued, received or otherwise purchased in connection with such investment opportunities. While most of our investments will be in private U.S. companies (subject to compliance with BDC regulatory requirement to invest at least 70% of its assets in private U.S. companies), we also expect to invest from time to time in European and other non-U.S. companies. Our portfolio may also include equity interests such as common stock, preferred stock, warrants or options, which generally would be obtained as part of providing a broader financing solution.