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SCHEDULE OF EARNINGS PER SHARE, BASIC AND DILUTED (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Earnings Per Share [Abstract]    
Net income (loss) attributable to WESCO International, Inc. $ 181,243 $ 59,178
Weighted average common shares outstanding used in computing basic earnings per share (in shares) 50,597,000 50,124,000
Common shares issuable upon exercise of dilutive stock options (in shares) 1,640,000 1,584,000
Weighted average common shares outstanding and common share equivalents used in computing diluted earnings per share (in shares) 52,237,000 51,708,000
Diluted (in dollars per share) $ 3.19 $ 0.87
Basic (in dollars per share) $ 3.30 $ 0.89
Net Income (Loss) Available to Common Stockholders, Basic $ 166,891 $ 44,826
Preferred Stock Dividends, Income Statement Impact $ 14,352 $ 14,352