ACQUISITIONS AND DIVESTITURES (Narrative) (Details)			3 Months Ended						12 Months Ended
		Aug. 26, 2021 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($)
Significant Acquisitions and Disposals [Line Items]
Cash									$ (900,000)	$ 529,200,000	$ 1,639,400,000
Number of facilities acquired | item									0
Goodwill of acquired businesses	[1]								$ (100,000)
Goodwill	[1]									43,800,000
Loss on impairments									28,300,000	67,900,000	4,600,000
Gain (loss) on sale of property, plant & equipment and businesses									76,400,000	10,700,000	120,100,000
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member]
Significant Acquisitions and Disposals [Line Items]
Assets held for sale			$ 0			$ 0			0	0	0
Acquisitions 2022 [Member]
Significant Acquisitions and Disposals [Line Items]
Total consideration									593,700,000	593,700,000
Cash										528,300,000
Noncash consideration amount										65,400,000
Amortizable intangible assets recognized										61,400,000
Goodwill									12,400,000	$ 12,400,000
Intangible assets amortization period, tax purposes										15 years
Goodwill, deductible for income tax purposes						0				$ 0
Immaterial Business Acquisitions [Member]
Significant Acquisitions and Disposals [Line Items]
Total consideration											4,900,000
U.S. Concrete [Member]
Significant Acquisitions and Disposals [Line Items]
Total consideration		$ 1,634,500,000
Supplemental Pro Forma Results, Net earnings attributable to Vulcan											$ 688,600,000
New York, New Jersey And Pennsylvania [Member] | Concrete [Member]
Significant Acquisitions and Disposals [Line Items]
Loss on impairments						67,800,000	$ 16,900,000
Gain (loss) on sale of property, plant & equipment and businesses						$ (17,400,000)
California [Member]
Significant Acquisitions and Disposals [Line Items]
Consideration transferred, net of assets divested								$ 12,900,000
Gain (loss) on sale of property, plant & equipment and businesses								$ 114,700,000
California [Member] | Excess Real Estate [Member]
Significant Acquisitions and Disposals [Line Items]
Gain (loss) on sale of property, plant & equipment and businesses							$ 23,500,000
Texas [Member]
Significant Acquisitions and Disposals [Line Items]
Loss on impairments			28,300,000
Gain (loss) on sale of property, plant & equipment and businesses			(13,800,000)
Texas [Member] | Concrete [Member]
Significant Acquisitions and Disposals [Line Items]
Loss on impairments				$ 28,300,000
Virginia [Member] | Excess Real Estate [Member]
Significant Acquisitions and Disposals [Line Items]
Gain (loss) on sale of property, plant & equipment and businesses			$ 65,700,000
Illinois [Member] | Former Recycled Concrete Facility [Member]
Significant Acquisitions and Disposals [Line Items]
Gain (loss) on sale of property, plant & equipment and businesses					$ 15,200,000
Aggregates [Member]
Significant Acquisitions and Disposals [Line Items]
Goodwill of acquired businesses	[1]								$ (100,000)
Goodwill	[1]									$ 13,700,000
Aggregates [Member] | California [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										8
Aggregates [Member] | Texas [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										5
Asphalt Mix [Member] | California [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										4
Ready-Mixed Concrete Facilities [Member] | California [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										7
Ready-Mixed Concrete Facilities [Member] | Virginia [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										4
Idle Ready-Mixed Concrete Sites [Member] | Virginia [Member]
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired | item										2
Amortizable Intangible Asset Straight-Line Method [Member] | Acquisitions 2022 [Member]
Significant Acquisitions and Disposals [Line Items]
Estimated weighted-average amortization period of intangible assets										15 years

[1] See Note 19 for acquisitions and divestitures.