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Cover Page - USD ($)
 12 Months Ended
Dec. 27, 2024
Jan. 24, 2025
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 27, 2024    
Document Transition Report false    
Entity File Number 001-09249    
Entity Registrant Name Graco Inc.    
Entity Incorporation, State or Country Code MN    
Entity Tax Identification Number 41-0285640    
Entity Address, Address Line One 88 - 11th Avenue N.E.    
Entity Address, City or Town Minneapolis,    
Entity Address, State or Province MN    
Entity Address, Postal Zip Code 55413    
City Area Code (612)    
Local Phone Number 623-6000    
Title of 12(b) Security Common Stock, par value $1.00 per share    
Trading Symbol GGG    
Security Exchange Name 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 Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 13,390,841,427
Entity Common Stock, Shares Outstanding   169,493,970  
Documents Incorporated by Reference [Text Block]
Portions of the Company’s definitive Proxy Statement for its Annual Meeting of Shareholders to be held on April 25, 2025, are incorporated by reference into Part III of this 2024 Annual Report on Form 10-K (this “Form 10-K”), as specifically set forth in said Part III of this Form 10-K.
    
Amendment Flag false    
Entity Central Index Key 0000042888    
Current Fiscal Year End Date --12-27    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY