v3.26.1
Employee Benefit Plan, Fair Value and NAV (Details) - EBP 002 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value    
Fair value of investments $ 1,510,732,631 $ 1,276,191,313
Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 1,339,300,836 1,128,495,280
Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments 78,748,501 67,172,249
Interest-Bearing Deposits    
EBP, Investment, Fair Value    
Fair value of investments 35,699,186 38,564,178
EBP, Self-Directed Brokerage Account    
EBP, Investment, Fair Value    
Fair value of investments 56,984,108 41,959,606
Large cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 456,422,399 389,296,692
Mid cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 156,726,598 145,924,196
Small cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 45,583,483 48,462,527
Balanced Funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 498,779,808 395,825,234
International Funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 102,378,127 79,843,708
Bonds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 79,410,421 69,142,923
EBP, Employer, Common Stock | Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments 78,738,274 67,163,116
Employer Common Stock Fund | Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments 10,227 9,133
Fair Value, Inputs, Level 1    
EBP, Investment, Fair Value    
Fair value of investments 1,510,732,631 1,276,191,313
Fair Value, Inputs, Level 1 | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 1,339,300,836 1,128,495,280
Fair Value, Inputs, Level 1 | Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments 78,748,501 67,172,249
Fair Value, Inputs, Level 1 | Interest-Bearing Deposits    
EBP, Investment, Fair Value    
Fair value of investments 35,699,186 38,564,178
Fair Value, Inputs, Level 1 | EBP, Self-Directed Brokerage Account    
EBP, Investment, Fair Value    
Fair value of investments 56,984,108 41,959,606
Fair Value, Inputs, Level 1 | Large cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 456,422,399 389,296,692
Fair Value, Inputs, Level 1 | Mid cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 156,726,598 145,924,196
Fair Value, Inputs, Level 1 | Small cap funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 45,583,483 48,462,527
Fair Value, Inputs, Level 1 | Balanced Funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 498,779,808 395,825,234
Fair Value, Inputs, Level 1 | International Funds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 102,378,127 79,843,708
Fair Value, Inputs, Level 1 | Bonds | Registered Investment Company    
EBP, Investment, Fair Value    
Fair value of investments 79,410,421 69,142,923
Fair Value, Inputs, Level 1 | EBP, Employer, Common Stock | Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments 78,738,274 67,163,116
Fair Value, Inputs, Level 1 | Employer Common Stock Fund | Cincinnati Financial Corporation    
EBP, Investment, Fair Value    
Fair value of investments $ 10,227 $ 9,133