Cover |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Cover [Abstract] | |
| Document Type | 11-K |
| Entity Registrant Name | WESCO International, Inc. |
| Entity Central Index Key | 0000929008 |
| Document Fiscal Year Focus | 2025 |
| Document Fiscal Period Focus | FY |
| Amendment Flag | false |
| Document Information [Line Items] | |
| Entity Registrant Name | WESCO International, Inc. |
| Document Type | 11-K |
| WESCO DISTRIBUTION, INC. RETIREMENT SAVINGS PLAN | |
| Cover [Abstract] | |
| Document Period End Date | Dec. 31, 2025 |
| Document Information [Line Items] | |
| Document Period End Date | Dec. 31, 2025 |
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- Details
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