v3.26.3
Investor A C Institutional And Class R [Member] Expense Example - Investor A, C, Institutional and Class R - BLACKROCK LARGE CAP FOCUS VALUE FUND, INC.
Jun. 30, 2026
USD ($)
Investor A Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 603
Expense Example, with Redemption, 3 Years 770
Expense Example, with Redemption, 5 Years 951
Expense Example, with Redemption, 10 Years 1,474
Investor C Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 267
Expense Example, with Redemption, 3 Years 517
Expense Example, with Redemption, 5 Years 892
Expense Example, with Redemption, 10 Years 1,722
Institutional Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 56
Expense Example, with Redemption, 3 Years 176
Expense Example, with Redemption, 5 Years 307
Expense Example, with Redemption, 10 Years 689
Class R Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 120
Expense Example, with Redemption, 3 Years 375
Expense Example, with Redemption, 5 Years 649
Expense Example, with Redemption, 10 Years $ 1,432