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REVENUE (Tables) | 9 Months Ended
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Sep. 30, 2023
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) | 2023 |  | 2022 |  | 2023 |  | 2022
Electrical & Electronic Solutions | $ | 2,190.7 |  |  | $ | 2,234.8 |  |  | $ | 6,526.1 |  |  | $ | 6,654.9 |
Communications & Security Solutions | 1,778.0 |  |  | 1,602.4 |  |  | 5,360.9 |  |  | 4,638.6 |
Utility & Broadband Solutions | 1,675.7 |  |  | 1,608.7 |  |  | 5,024.8 |  |  | 4,568.1 |
Total by segment | $ | 5,644.4 |  |  | $ | 5,445.9 |  |  | $ | 16,911.8 |  |  | $ | 15,861.6 |
| Three Months Ended |  | Nine Months Ended
| September 30 |  | September 30
(In millions) | 2023 |  | 2022 |  | 2023 |  | 2022
United States | $ | 4,166.5 |  |  | $ | 4,050.9 |  |  | $ | 12,529.5 |  |  | $ | 11,745.1 |
Canada | 765.8 |  |  | 765.3 |  |  | 2,298.3 |  |  | 2,288.1 |
Other International(1) | 712.1 |  |  | 629.7 |  |  | 2,084.0 |  |  | 1,828.4 |
Total by geography(2) | $ | 5,644.4 |  |  | $ | 5,445.9 |  |  | $ | 16,911.8 |  |  | $ | 15,861.6 |

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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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