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SCHEDULE OF ASSUMED ASSETS AND LIABILITIES (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Nov. 01, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 3,262.3	$ 3,240.9		$ 3,208.3
Rahi Systems
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 68.6			$ 68.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	52.6			52.6
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	69.0			49.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	105.8			105.8
Goodwill, Purchase Accounting Adjustments	0.9
Goodwill	98.3			97.4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets	47.5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets				41.1
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAssets	26.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	441.8			415.0
wcc:BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayable	28.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	86.0			58.0
Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Lease Obligation	20.1			20.1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	17.8			25.0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				56.4
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsLiabilities	26.9
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	186.4			159.5
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsNetAssets	0.0
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	255.4			$ 255.4
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory	19.6
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Assets	6.4
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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities	62.5
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities	$ 6.1

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