v3.26.1
Related Party and Party-in-Interest Transactions (Details) - EBP 001 - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Related Party and Party-in-Interest Transactions [Line Items]    
Investments, at fair value $ 446,587,449 $ 385,063,442
KB Home Stock Fund    
EBP, Related Party and Party-in-Interest Transactions [Line Items]    
Investments, at fair value $ 14,494,073 $ 18,076,332
Investment (in shares) 256,880 274,992
Dividend income on investment $ 270,168  
EBP, Trustee [Member]    
EBP, Related Party and Party-in-Interest Transactions [Line Items]    
Investments, at fair value $ 397,348,458 $ 337,188,027