N-2 - $ / shares |
6 Months Ended | |||||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Dec. 31, 2024 |
|||
| Cover [Abstract] | ||||||
| Entity Central Index Key | 0001772704 | |||||
| Amendment Flag | false | |||||
| Securities Act File Number | 814-01307 | |||||
| Document Type | 10-Q | |||||
| Entity Registrant Name | Goldman Sachs Private Middle Market Credit II LLC | |||||
| Entity Address, Address Line One | 200 West Street | |||||
| Entity Address, City or Town | New York | |||||
| Entity Address, State or Province | NY | |||||
| Entity Address, Postal Zip Code | 10282 | |||||
| City Area Code | 312 | |||||
| Local Phone Number | 655-4419 | |||||
| Entity Emerging Growth Company | true | |||||
| Entity Ex Transition Period | true | |||||
| General Description of Registrant [Abstract] | ||||||
| Investment Objectives and Practices [Text Block] | The Company’s investment objective is to generate current income and, to a lesser extent, capital appreciation primarily through direct originations of secured debt, including first lien debt, unitranche debt, including last-out portions of such loans, and second lien debt, and unsecured debt, including mezzanine debt, as well as through select equity investments. |
|||||
| Risk [Text Block] | Item 1A. RISK FACTORS An investment in our securities involves a high degree of risk. There have been no material changes to the risk factors previously reported under Item 1A. “Risk Factors” of our annual report on Form 10-K for the year ended December 31, 2025, which was filed with the SEC on March 3, 2026. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may materially affect our business, financial condition and/or operating results. |
|||||
| NAV Per Share | [1] | $ 66.88 | $ 68.62 | $ 80.42 | $ 79.27 | |
| ||||||