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COMMITMENTS AND CONTINGENCIES Guarantees (Details) | 3 Months Ended
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Sep. 30, 2020
Guarantees and Product Warranties [Abstract] |
Guarantor Obligations, Origin and Purpose | Due to the nature of WESCO’s arrangement with WESTEC, WESCO has provided a standby letter of credit under its revolving credit facility of up to $7.3 million as security for WESTEC’s debt facilities.

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- Definition Describes how and under what circumstances or in connection with which transaction the guarantee or each group of similar guarantees was given and the objective of the guarantee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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- References No definition available. + Details
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