| Document and Entity Information | Oct. 28, 2024 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001982701 |
| Document Type | 8-K |
| Document Period End Date | Oct. 28, 2024 |
| Entity Registrant Name | AB PRIVATE LENDING FUND |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 814-01744 |
| Entity Tax Identification Number | 93-6555027 |
| Entity Address, Address Line One | 405 Colorado Street |
| Entity Address, Address Line Two | Suite 1500 |
| Entity Address, City or Town | Austin |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78701 |
| City Area Code | (512) |
| Local Phone Number | 721-2900 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
