v3.26.1
N-2
Jun. 12, 2026
Cover [Abstract]  
Entity Central Index Key 0001816389
Amendment Flag false
Securities Act File Number 811-23584
Document Type 8-K
Entity Registrant Name BLACKROCK PRIVATE INVESTMENTS FUND
Entity Address, Address Line One 100 Bellevue Parkway
Entity Address, City or Town Wilmington
Entity Address, State or Province DE
Entity Address, Postal Zip Code 19809
City Area Code 800
Local Phone Number 882-0052
Entity Emerging Growth Company false