v3.25.2
Investor A, C, Institutional and Class R [Member] Expense Example - Investor A, C, Institutional and Class R [Member] - BLACKROCK BALANCED FUND, INC.
May 31, 2025
USD ($)
Investor A Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 600
Expense Example, with Redemption, 3 Years 763
Expense Example, with Redemption, 5 Years 940
Expense Example, with Redemption, 10 Years 1,451
Investor C Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 259
Expense Example, with Redemption, 3 Years 495
Expense Example, with Redemption, 5 Years 854
Expense Example, with Redemption, 10 Years 1,657
Institutional Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 55
Expense Example, with Redemption, 3 Years 175
Expense Example, with Redemption, 5 Years 306
Expense Example, with Redemption, 10 Years 688
Class R Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 119
Expense Example, with Redemption, 3 Years 374
Expense Example, with Redemption, 5 Years 648
Expense Example, with Redemption, 10 Years $ 1,431