ACQUISITIONS AND DIVESTITURES (Comprehensive Income Actual Results) (Details) - U.S. Concrete [Member] $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Significant Acquisitions And Disposals [Line Items]
Total revenues	$ 466.3
Net loss attributable to Vulcan	$ (19.7)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479907/805-20-50-5

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-Topic 805
-SubTopic 10
-Section 50
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