v3.26.1
Form N-CSR Cover
6 Months Ended
Jan. 31, 2026
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name AB LARGE CAP GROWTH FUND INC
Entity Central Index Key 0000889508
Entity Investment Company Type N-1A
Document Period End Date Jan. 31, 2026