N-2 - $ / shares	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Cover [Abstract]
Entity Central Index Key	0001955010
Amendment Flag	false
Securities Act File Number	814-01586
Document Type	10-Q
Entity Registrant Name	OHA SENIOR PRIVATE LENDING FUND (U) LLC
Entity Address, Address Line One	1 Vanderbilt
Entity Address, Address Line Two	16th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10017
City Area Code	212
Local Phone Number	326-1500
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
General Description of Registrant [Abstract]
Investment Objectives and Practices [Text Block]	The Company will seek to achieve attractive risk-adjusted returns by investing primarily in the non-investment grade credit markets in North America and Europe, with a primary focus on direct lending in the United States. The Company will target investments in well-established, larger companies generally with earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $75 million or greater (“Larger Borrowers”), consistent with OHA’s investment history and proven investment process. We believe that credit profiles of Larger Borrowers generally benefit from greater business diversification, stronger market positions, experienced management teams and a greater ability to navigate challenging markets.Subject to any restrictions imposed under the 1940 Act, any related RIC asset diversification requirements and any guidelines and limitations set forth herein, the Company’s investments are expected to primarily consist of senior secured first lien loans and unitranche loans but may include second lien loans or other assets. The Company will seek target position sizes of 2% to 5% of NAV and seek to allocate (a) greater than or equal to 80% of NAV to first lien and unitranche loans and (b) less than or equal to 20% of NAV to second lien loans. The Company’s investment mandate will be structured so as to allow for co-investment across OHA’s entire platform, based on existing SEC exemptive relief under Rule 17d-1 under the 1940 Act and any additional SEC exemptive relief obtained in the future.
Risk Factors [Table Text Block]	In addition to the other information set forth in this Quarterly Report, you should carefully consider the risk factor described below and in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022. We are subject to risk relating to the replacement of LIBOR with an alternative reference rate. LIBOR, the London Interbank Offered Rate, was a leading floating rate benchmark used in loans, notes, derivatives and other instruments or investments. As a result of benchmark reforms, publication of most LIBOR settings has ceased. Some LIBOR settings continue to be published but only on a temporary, synthetic and non-representative basis. Regulated entities have generally ceased entering into new LIBOR contracts in connection with regulatory guidance or prohibitions. Public and private sector actors have worked to establish new or alternative reference rates to be used in place of LIBOR. The U.S. Federal Reserve, in conjunction with the Alternative Reference Rates Committee, has recommended a new reference rate derived from short-term repurchase agreements backed by Treasury securities, the Secured Overnight Financing Rate (“SOFR”). The transition away from LIBOR may adversely impact the Company and/or the Company’s portfolio companies as certain of the Company’s investments and/or other indebtedness of the Company’s portfolio companies may have interest rates which were determined (or, in some cases, continue to be determined) with reference to LIBOR. Although replacement rates (e.g., SOFR) have begun to be adopted in the lending and bond markets, the ongoing LIBOR replacement process might affect the Company’s floating-rate investments, including by: • adversely impacting the pricing, liquidity, value of, return on and trading for a broad array of financial products, including any LIBOR-linked (or formerly LIBOR-linked) securities, loans and derivatives that may be included in the Company’s assets; • requiring extensive changes to documentation that governs or references LIBOR or LIBOR-based products, including, for example, pursuant to time-consuming renegotiations of documentation to modify the terms of investments; • resulting in disputes, litigation or other actions with portfolio companies, or other counterparties, regarding the interpretation and enforceability of provisions in the Company’s LIBOR-based investments, such as fallback language or other related provisions, including, in the case of fallbacks to the alternative reference rates, any economic, legal, operational or other impact resulting from the fundamental differences between LIBOR and the various alternative reference rates; or • causing the Company to incur additional costs in relation to any of the above factors. In addition to the Company and portfolio companies may have renegotiated (or may yet need to renegotiate) some of those instruments to address a transition away from LIBOR, there also may be different conventions that arise in different but related market segments and there may be mismatches between different assets and liabilities causing possible unexpected gains and/or losses for the Company or portfolio companies. Some replacement rates may also be subject to compounding or similar adjustments that cause the amount of any payment referencing a replacement rate not to be determined until the end of the relevant calculation period, rather than at the beginning, which could lead to administrative challenges for the Company. If the transition of an instrument or investment from LIBOR results in an overall increase to borrowing costs, higher interest expense could negatively affect the financial results and valuations of the Company’s portfolio companies. There is no guarantee that a transition from LIBOR to an alternative will not result in significant increases or volatility in benchmark rates or borrowing costs to borrowers, any of which could have a material adverse effect on our results of operations, financial condition and cash flow. We are subject to risks relating to inflation. Certain of our portfolio companies may be impacted by inflation as well as actions by central banks or monetary authorities, including the U.S. Federal Reserve, to address inflation. If such portfolio companies are unable pass any increases in their costs along to their customers, it could adversely affect their results and their ability to impacting their ability to pay interest and principal on our loans. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future unrealized losses and therefore reduce our net assets resulting from operations. In recent periods, the U.S. Federal Reserve and certain other central banks or monetary authorities have increased interest rates at significant levels and may continue to increase or maintain interest rates at increased levels. It is difficult to predict the magnitude or timing of these interest rate increases and the impact these actions will have on the Company’s portfolio companies and the markets where they operate. Legislative or regulatory tax changes could adversely affect our Members. At any time, the federal income tax laws governing RICs or the administrative interpretations of those laws or regulations may be amended. The Biden Administration has enacted significant changes to the existing U.S. tax rules that include, among others, a minimum tax on book income and profits of certain multinational corporations, and there are a number of proposals in the U.S. Congress that would, if enacted, further modify the existing U.S. tax rules. The likelihood of any new legislation being enacted is uncertain. Any new laws, regulations or interpretations may take effect retroactively and could adversely affect the taxation of us and/or our Members. Therefore, changes in tax laws, regulations or administrative interpretations or any amendments thereto could diminish the value of an investment in our shares or the value or the resale potential of our investments.
NAV Per Share	$ 10.32	$ 10.07
Reference Rate Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]	We are subject to risk relating to the replacement of LIBOR with an alternative reference rate. LIBOR, the London Interbank Offered Rate, was a leading floating rate benchmark used in loans, notes, derivatives and other instruments or investments. As a result of benchmark reforms, publication of most LIBOR settings has ceased. Some LIBOR settings continue to be published but only on a temporary, synthetic and non-representative basis. Regulated entities have generally ceased entering into new LIBOR contracts in connection with regulatory guidance or prohibitions. Public and private sector actors have worked to establish new or alternative reference rates to be used in place of LIBOR. The U.S. Federal Reserve, in conjunction with the Alternative Reference Rates Committee, has recommended a new reference rate derived from short-term repurchase agreements backed by Treasury securities, the Secured Overnight Financing Rate (“SOFR”). The transition away from LIBOR may adversely impact the Company and/or the Company’s portfolio companies as certain of the Company’s investments and/or other indebtedness of the Company’s portfolio companies may have interest rates which were determined (or, in some cases, continue to be determined) with reference to LIBOR. Although replacement rates (e.g., SOFR) have begun to be adopted in the lending and bond markets, the ongoing LIBOR replacement process might affect the Company’s floating-rate investments, including by: • adversely impacting the pricing, liquidity, value of, return on and trading for a broad array of financial products, including any LIBOR-linked (or formerly LIBOR-linked) securities, loans and derivatives that may be included in the Company’s assets; • requiring extensive changes to documentation that governs or references LIBOR or LIBOR-based products, including, for example, pursuant to time-consuming renegotiations of documentation to modify the terms of investments; • resulting in disputes, litigation or other actions with portfolio companies, or other counterparties, regarding the interpretation and enforceability of provisions in the Company’s LIBOR-based investments, such as fallback language or other related provisions, including, in the case of fallbacks to the alternative reference rates, any economic, legal, operational or other impact resulting from the fundamental differences between LIBOR and the various alternative reference rates; or • causing the Company to incur additional costs in relation to any of the above factors. In addition to the Company and portfolio companies may have renegotiated (or may yet need to renegotiate) some of those instruments to address a transition away from LIBOR, there also may be different conventions that arise in different but related market segments and there may be mismatches between different assets and liabilities causing possible unexpected gains and/or losses for the Company or portfolio companies. Some replacement rates may also be subject to compounding or similar adjustments that cause the amount of any payment referencing a replacement rate not to be determined until the end of the relevant calculation period, rather than at the beginning, which could lead to administrative challenges for the Company. If the transition of an instrument or investment from LIBOR results in an overall increase to borrowing costs, higher interest expense could negatively affect the financial results and valuations of the Company’s portfolio companies. There is no guarantee that a transition from LIBOR to an alternative will not result in significant increases or volatility in benchmark rates or borrowing costs to borrowers, any of which could have a material adverse effect on our results of operations, financial condition and cash flow.
Inflation Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]	We are subject to risks relating to inflation. Certain of our portfolio companies may be impacted by inflation as well as actions by central banks or monetary authorities, including the U.S. Federal Reserve, to address inflation. If such portfolio companies are unable pass any increases in their costs along to their customers, it could adversely affect their results and their ability to impacting their ability to pay interest and principal on our loans. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future unrealized losses and therefore reduce our net assets resulting from operations. In recent periods, the U.S. Federal Reserve and certain other central banks or monetary authorities have increased interest rates at significant levels and may continue to increase or maintain interest rates at increased levels. It is difficult to predict the magnitude or timing of these interest rate increases and the impact these actions will have on the Company’s portfolio companies and the markets where they operate.
Legislative And Regulatory Tax Risk [Member]
General Description of Registrant [Abstract]
Risk [Text Block]	Legislative or regulatory tax changes could adversely affect our Members. At any time, the federal income tax laws governing RICs or the administrative interpretations of those laws or regulations may be amended. The Biden Administration has enacted significant changes to the existing U.S. tax rules that include, among others, a minimum tax on book income and profits of certain multinational corporations, and there are a number of proposals in the U.S. Congress that would, if enacted, further modify the existing U.S. tax rules. The likelihood of any new legislation being enacted is uncertain. Any new laws, regulations or interpretations may take effect retroactively and could adversely affect the taxation of us and/or our Members. Therefore, changes in tax laws, regulations or administrative interpretations or any amendments thereto could diminish the value of an investment in our shares or the value or the resale potential of our investments.

0001955010

814-01586

Entity Registrant Name

OHA SENIOR PRIVATE LENDING FUND (U) LLC

Entity Address, Address Line Two

16th Floor

Entity Address, State or Province

NY

City Area Code

212

Entity Emerging Growth Company

true

General Description of Registrant [Abstract]

Risk Factors [Table Text Block]

In addition to the other information set forth in this Quarterly Report, you should carefully consider the risk factor described below and in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

We are subject to risk relating to the replacement of LIBOR with an alternative reference rate.

LIBOR, the London Interbank Offered Rate, was a leading floating rate benchmark used in loans, notes, derivatives and other instruments or investments. As a result of benchmark reforms, publication of most LIBOR settings has ceased. Some LIBOR settings continue to be published but only on a temporary, synthetic and non-representative basis. Regulated entities have generally ceased entering into new LIBOR contracts in connection with regulatory guidance or prohibitions. Public and private sector actors have worked to establish new or alternative reference rates to be used in place of LIBOR. The U.S. Federal Reserve, in conjunction with the Alternative Reference Rates Committee, has recommended a new reference rate derived from short-term repurchase agreements backed by Treasury securities, the Secured Overnight Financing Rate (“SOFR”).

The transition away from LIBOR may adversely impact the Company and/or the Company’s portfolio companies as certain of the Company’s investments and/or other indebtedness of the Company’s portfolio companies may have interest rates which were determined (or, in some cases, continue to be determined) with reference to LIBOR. Although replacement rates (e.g., SOFR) have begun to be adopted in the lending and bond markets, the ongoing LIBOR replacement process might affect the Company’s floating-rate investments, including by:

• adversely impacting the pricing, liquidity, value of, return on and trading for a broad array of financial products, including any LIBOR-linked (or formerly LIBOR-linked) securities, loans and derivatives that may be included in the Company’s assets;

• requiring extensive changes to documentation that governs or references LIBOR or LIBOR-based products, including, for example, pursuant to time-consuming renegotiations of documentation to modify the terms of investments;

• resulting in disputes, litigation or other actions with portfolio companies, or other counterparties, regarding the interpretation and enforceability of provisions in the Company’s LIBOR-based investments, such as fallback language or other related provisions, including, in the case of fallbacks to the alternative reference rates, any economic, legal, operational or other impact resulting from the fundamental differences between LIBOR and the various alternative reference rates; or

• causing the Company to incur additional costs in relation to any of the above factors.

In addition to the Company and portfolio companies may have renegotiated (or may yet need to renegotiate) some of those instruments to address a transition away from LIBOR, there also may be different conventions that arise in different but related market segments and there may be mismatches between different assets and liabilities causing possible unexpected gains and/or losses for the Company or portfolio companies. Some replacement rates may also be subject to compounding or similar adjustments that cause the amount of any payment referencing a replacement rate not to be determined until the end of the relevant calculation period, rather than at the beginning, which could lead to administrative challenges for the Company.

If the transition of an instrument or investment from LIBOR results in an overall increase to borrowing costs, higher interest expense could negatively affect the financial results and valuations of the Company’s portfolio companies. There is no guarantee that a transition from LIBOR to an alternative will not result in significant increases or volatility in

benchmark rates or borrowing costs to borrowers, any of which could have a material adverse effect on our results of operations, financial condition and cash flow.

We are subject to risks relating to inflation.

Certain of our portfolio companies may be impacted by inflation as well as actions by central banks or monetary authorities, including the U.S. Federal Reserve, to address inflation. If such portfolio companies are unable pass any increases in their costs along to their customers, it could adversely affect their results and their ability to impacting their ability to pay interest and principal on our loans. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future unrealized losses and therefore reduce our net assets resulting from operations. In recent periods, the U.S. Federal Reserve and certain other central banks or monetary authorities have increased interest rates at significant levels and may continue to increase or maintain interest rates at increased levels. It is difficult to predict the magnitude or timing of these interest rate increases and the impact these actions will have on the Company’s portfolio companies and the markets where they operate.

Legislative or regulatory tax changes could adversely affect our Members.

At any time, the federal income tax laws governing RICs or the administrative interpretations of those laws or regulations may be amended. The Biden Administration has enacted significant changes to the existing U.S. tax rules that include, among others, a minimum tax on book income and profits of certain multinational corporations, and there are a number of proposals in the U.S. Congress that would, if enacted, further modify the existing U.S. tax rules. The likelihood of any new legislation being enacted is uncertain. Any new laws, regulations or interpretations may take effect retroactively and could adversely affect the taxation of us and/or our Members. Therefore, changes in tax laws, regulations or administrative interpretations or any amendments thereto could diminish the value of an investment in our shares or the value or the resale potential of our investments.

Risk [Text Block]