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Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2025
Feb. 11, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-34223    
Entity Registrant Name CLEAN HARBORS, INC.    
Entity Incorporation, State or Country Code MA    
Entity Tax Identification Number 04-2997780    
Entity Address, Address Line One 42 Longwater Drive    
Entity Address, City or Town Norwell    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 02061-9149    
City Area Code 781    
Local Phone Number 792-5000    
Title of 12(b) Security Common Stock, $0.01 par value    
Trading Symbol CLH    
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 false    
Entity Shell Company false    
Entity Public Float     $ 11.7
Entity Common Stock, Shares Outstanding   52,910,946  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s proxy statement for the 2026 Annual Meeting of Shareholders are incorporated by reference in Part III of this Form 10-K to the extent described herein.
    
Entity Central Index Key 0000822818    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Amendment Flag false