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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table sets forth the details of basic and diluted earnings per share:
| Three Months Ended |  | Nine Months Ended
| September 30 |  | September 30
(In thousands, except per share data) | 2022 |  | 2021 |  | 2022 |  | 2021
Net income attributable to WESCO International, Inc. | $ | 239,602 |  |  | $ | 119,596 |  |  | $ | 641,551 |  |  | $ | 297,969 |
Less: Preferred stock dividends | 14,352 |  |  | 14,352 |  |  | 43,056 |  |  | 43,056 |
Net income attributable to common stockholders | $ | 225,250 |  |  | $ | 105,244 |  |  | $ | 598,495 |  |  | $ | 254,913 |
Weighted-average common shares outstanding used in computing basic earnings per share | 50,815 |  |  | 50,386 |  |  | 50,711 |  |  | 50,252 |
Common shares issuable upon exercise of dilutive equity awards | 1,574 |  |  | 1,677 |  |  | 1,675 |  |  | 1,644 |
Weighted-average common shares outstanding and common share equivalents used in computing diluted earnings per share | 52,389 |  |  | 52,063 |  |  | 52,386 |  |  | 51,896 |
Earnings per share attributable to common stockholders |  |  |  |  |  |  |
Basic | $ | 4.43 |  |  | $ | 2.09 |  |  | $ | 11.80 |  |  | $ | 5.07 |
Diluted | $ | 4.30 |  |  | $ | 2.02 |  |  | $ | 11.42 |  |  | $ | 4.91 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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