v3.26.3
Investor A C Institutional And Class R [Member] N-1A Cover
Jun. 30, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name BLACKROCK LARGE CAP FOCUS VALUE FUND, INC.
Entity Central Index Key 0000216557
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Prospectus Date Oct. 28, 2026