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REVENUE (Tables) | 6 Months Ended
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Jun. 30, 2025
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table disaggregates Wesco’s net sales by geography for the periods presented:
| Three Months Ended |  | Six Months Ended
| June 30 |  | June 30
(In millions) | 2025 |  | 2024 |  | 2025 |  | 2024
United States | $ | 4,386.9 |  |  | $ | 4,050.5 |  |  | $ | 8,361.5 |  |  | $ | 8,048.1 |
Canada | 804.0 |  |  | 744.4 |  |  | 1,516.8 |  |  | 1,462.9 |
Other International(1) | 708.7 |  |  | 684.8 |  |  | 1,365.0 |  |  | 1,318.7 |
Total by geography(2) | $ | 5,899.6 |  |  | $ | 5,479.7 |  |  | $ | 11,243.3 |  |  | $ | 10,829.7 |

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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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