0000929008 2025-04-30 2025-04-30 0000929008 us-gaap:CommonStockMember 2025-04-30 2025-04-30 0000929008 us-gaap:SeriesAPreferredStockMember 2025-04-30 2025-04-30 WESCO INTERNATIONAL INC false 0000929008 8-K 2025-04-30 DE 001-14989 25-1723342 225 West Station Square Drive Suite 700 Pittsburgh PA 15219 (412) 454-2200 false false false false Common Stock, par value $0.01 per share WCC NYSE Depositary Shares, each representing 1/1,000th interest in a share of Series A Fixed-Rate Reset Cumulative Perpetual Preferred Stock WCC PR A NYSE false