XML 19 R1.htm IDEA: XBRL DOCUMENT v3.25.0.1
COVER PAGE - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2024
Feb. 13, 2025
Jun. 28, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 001-14989    
Entity Registrant Name WESCO International, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 25-1723342    
Entity Address, Address Line One 225 West Station Square Drive    
Entity Address, Address Line Two Suite 700    
Entity Address, Postal Zip Code 15219    
Entity Address, State or Province PA    
Entity Address, City or Town Pittsburgh,    
City Area Code 412    
Local Phone Number 454-2200    
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    
Entity Shell Company false    
Current Fiscal Year End Date --12-31    
Entity Public Float     $ 7.7
Entity Common Stock, Shares Outstanding   48,795,929  
Entity Central Index Key 0000929008    
Documents Incorporated by Reference
Part III of this Form 10-K incorporates by reference portions of the registrant’s Proxy Statement for its 2025 Annual Meeting of Stockholders.
    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Document Financial Statement Error Correction [Flag] false    
Common Class A [Member]      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, par value $.01 per share    
Trading Symbol WCC    
Name of Exchange NYSE    
Series A Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Depositary Shares, each representing a 1/1,000th interest in a share of Series A Fixed-Rate Reset Cumulative Perpetual Preferred Stock    
Trading Symbol WCC PR A    
Name of Exchange NYSE