v3.25.2
Cover - USD ($)
12 Months Ended
Jul. 31, 2025
Sep. 12, 2025
Jan. 31, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --07-31    
Document Period End Date Jul. 31, 2025    
Document Transition Report false    
Entity File Number 1-7891    
Entity Registrant Name DONALDSON COMPANY, INC.    
Entity Incorporation, State DE    
Entity Tax Identification Number 41-0222640    
Entity Address, Street Address 1400 West 94th Street    
Entity Address, City Minneapolis    
Entity Address, State MN    
Entity Address, Postal Zip Code 55431    
City Area Code 952    
Local Phone Number 887-3131    
Title of each class Common Stock, $5.00 par value    
Trading Symbol(s) DCI    
Name of each exchange on which registered NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error false    
Entity Shell Company false    
Entity Public Float     $ 8,462,489,351
Entity Common Stock, Shares Outstanding   115,907,357  
Documents Incorporated by Reference
Portions of the registrant’s Proxy Statement for its 2025 annual meeting of stockholders (the “2025 Proxy Statement”) are incorporated by reference in Part III, as specifically set forth in Part III.
   
Entity Central Index Key 0000029644    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false