v3.26.1
Fair Value Measurements (Details) - EBP 019 - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, at fair value $ 39,685 $ 36,099
Interest in Carpenter Technology Master Trust, at fair value 357 406
Interest in Carpenter Technology Master Trust, at fair value 40,042 36,505
Level 1 | Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, at fair value 10,996 9,619
Level 1 | Carpenter Technology Stock Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Interest in Carpenter Technology Master Trust, at fair value 267 337
Level 1 | Short-term investment fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Interest in Carpenter Technology Master Trust, at fair value 90 69
NAV | Common collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Investments, at fair value 28,689 $ 26,480
NAV | Aristotle Value Equity CIT B Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Market capitalization amount $ 2,000,000