v3.26.1
Fair Value Measurements (Details) - EBP 007 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Fair Value Measurements    
Investments, at fair value $ 927,731,551 $ 812,396,436
Fair Value, Inputs, Level 1, Level 2, and Level 3    
Fair Value Measurements    
Investments, at fair value 302,511,374 260,995,800
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Donaldson Company, Inc. Common Stock Fund    
Fair Value Measurements    
Investments, at fair value 210,973,632 177,822,400
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Mutual funds and interest bearing cash    
Fair Value Measurements    
Investments, at fair value 79,846,264 71,246,045
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Participant-directed brokerage accounts    
Fair Value Measurements    
Investments, at fair value 11,691,478 11,927,355
Level 1    
Fair Value Measurements    
Investments, at fair value 302,511,374 260,995,800
Level 1 | Donaldson Company, Inc. Common Stock Fund    
Fair Value Measurements    
Investments, at fair value 210,973,632 177,822,400
Level 1 | Mutual funds and interest bearing cash    
Fair Value Measurements    
Investments, at fair value 79,846,264 71,246,045
Level 1 | Participant-directed brokerage accounts    
Fair Value Measurements    
Investments, at fair value 11,691,478 11,927,355
Level 2    
Fair Value Measurements    
Investments, at fair value 0 0
Level 2 | Donaldson Company, Inc. Common Stock Fund    
Fair Value Measurements    
Investments, at fair value 0 0
Level 2 | Mutual funds and interest bearing cash    
Fair Value Measurements    
Investments, at fair value 0 0
Level 2 | Participant-directed brokerage accounts    
Fair Value Measurements    
Investments, at fair value 0 0
Level 3    
Fair Value Measurements    
Investments, at fair value 0 0
Level 3 | Donaldson Company, Inc. Common Stock Fund    
Fair Value Measurements    
Investments, at fair value 0 0
Level 3 | Mutual funds and interest bearing cash    
Fair Value Measurements    
Investments, at fair value 0 0
Level 3 | Participant-directed brokerage accounts    
Fair Value Measurements    
Investments, at fair value 0 0
NAV | Common/collective trust fund investments measured at NAV    
Fair Value Measurements    
Investments, at fair value $ 625,220,177 $ 551,400,636