0000929008 2024-10-31 2024-10-31 0000929008 us-gaap:CommonClassAMember 2024-10-31 2024-10-31 0000929008 us-gaap:SeriesAPreferredStockMember 2024-10-31 2024-10-31 0000929008 false 8-K 2024-10-31 WESCO International, Inc. DE 001-14989 25-1723342 225 West Station Square DriveSuite 700 15219 Pittsburgh, PA 412 454-2200 false false false false Common Stock, par value $.01 per share WCC NYSE Depositary Shares, each representing a 1/1,000th interest in a share of Series A Fixed-Rate Reset Cumulative Perpetual Preferred Stock WCC PR A NYSE false 2024-10-31