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REVENUE (Tables) | 9 Months Ended
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Sep. 30, 2024
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following tables disaggregate Wesco’s net sales by segment and geography for the periods presented:
| Three Months Ended |  | Nine Months Ended
| September 30 |  | September 30
(In millions) | 2024 |  | 2023 |  | 2024 |  | 2023
Electrical & Electronic Solutions | $ | 2,151.2 |  |  | $ | 2,190.7 |  |  | $ | 6,423.1 |  |  | $ | 6,526.1 |
Communications & Security Solutions | 1,955.1 |  |  | 1,778.0 |  |  | 5,491.1 |  |  | 5,360.9 |
Utility & Broadband Solutions | 1,383.1 |  |  | 1,675.7 |  |  | 4,404.9 |  |  | 5,024.8 |
Total by segment | $ | 5,489.4 |  |  | $ | 5,644.4 |  |  | $ | 16,319.1 |  |  | $ | 16,911.8 |
| Three Months Ended |  | Nine Months Ended
| September 30 |  | September 30
(In millions) | 2024 |  | 2023 |  | 2024 |  | 2023
United States | $ | 4,041.4 |  |  | $ | 4,166.5 |  |  | $ | 12,089.5 |  |  | $ | 12,529.5 |
Canada | 763.7 |  |  | 765.8 |  |  | 2,226.6 |  |  | 2,298.3 |
Other International(1) | 684.3 |  |  | 712.1 |  |  | 2,003.0 |  |  | 2,084.0 |
Total by geography(2) | $ | 5,489.4 |  |  | $ | 5,644.4 |  |  | $ | 16,319.1 |  |  | $ | 16,911.8 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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