v3.25.2
Cover
Jun. 12, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jun. 12, 2025
Registrant Name WESCO International, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-14989
Entity Tax Identification Number 25-1723342
Entity Address, Address Line One 225 West Station Square DriveSuite 700
Entity Address, City or Town Pittsburgh,
Entity Address, State or Province PA
Entity Address, Postal Zip Code 15219
City Area Code 412
Local Phone Number 454-2200
Entity Emerging Growth Company false
Central Index Key 0000929008
Amendment Flag false
Document Information [Line Items]  
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Document Period End Date Jun. 12, 2025
Common Class A  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, par value $.01 per share
Trading Symbol WCC
Security Exchange Name 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
Security Exchange Name NYSE