v3.26.1
Investor A C and Institutional [Member] Expense Example, No Redemption - Investor A C and Institutional - BLACKROCK LARGE CAP FOCUS GROWTH FUND, INC. - Investor C Shares
May 31, 2025
USD ($)
Prospectus [Line Items]  
Expense Example, No Redemption, 1 Year $ 170
Expense Example, No Redemption, 3 Years 545
Expense Example, No Redemption, 5 Years 946
Expense Example, No Redemption, 10 Years $ 1,860