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REVENUE (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following tables disaggregate WESCO’s revenue by end market and geography:
| Three Months Ended |  |
| March 31 |  |
(In thousands) | 2020 |  | 2019
Industrial | $ | 702,214 |  |  | $ | 736,906 |
Construction | 636,503 |  |  | 633,288 |
Utility | 340,945 |  |  | 308,269 |
Commercial, Institutional and Government | 288,985 |  |  | 282,804 |
Total by end market | $ | 1,968,647 |  |  | $ | 1,961,267 |
| Three Months Ended |  |
| March 31 |  |
(In thousands) | 2020 |  | 2019
United States | $ | 1,478,491 |  |  | $ | 1,460,991 |
Canada | 377,419 |  |  | 384,596 |
Other International | 112,737 |  |  | 115,680 |
Total by geography | $ | 1,968,647 |  |  | $ | 1,961,267 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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