SEGMENT REPORTING (Narrative) (Details)		12 Months Ended
		Dec. 31, 2021 USD ($) state segment mi	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Number of operating segments | segment		4
Number of reportable segments | segment		4
Revenues	[1]	$ 5,552,200,000	$ 4,856,800,000	$ 4,929,100,000
Radius for Delivering Product Maximum | mi		25
Radius for Delivering Product Minimum | mi		20
Concrete [Member]
Revenues	[1]	$ 766,800,000	383,600,000	395,600,000
Percentage of product weight attributable to Aggregates		80.00%
Number of states in which segments serve | state		8
Aggregates [Member]
Revenues	[1]	$ 4,000,700,000	3,672,900,000	3,669,500,000
Equity method investments		$ 26,500,000	26,500,000	50,600,000
Number of states in which segments serve | state		22
Number of additional states served | state		11
Asphalt [Member]
Revenues	[1]	$ 777,800,000	792,600,000	855,800,000
Percentage of product weight attributable to Aggregates		95.00%
Number of states in which segments serve | state		6
Asphalt [Member] | Asphalt Construction Paving [Member]
Number of states in which segments serve | state		3
United States [Member]
Revenues		$ 5,532,000,000.0	4,845,900,000	4,913,000,000.0
Nondomestic [Member]
Long-lived assets		459,500,000	261,600,000	274,400,000
Nondomestic [Member] | Aggregates [Member]
Revenues		20,200,000	11,000,000.0	16,100,000
Nondomestic [Member] | Asphalt, Concrete And Calcium [Member]
Revenues		$ 0	$ 0	$ 0
U.S. Concrete, Inc. [Member]
Number of additional states served | state		2

[1] ¹ The geographic markets are defined by states as follows: East market — Arkansas, Delaware, Illinois, Kentucky, Maryland, North Carolina, Pennsylvania, Tennessee, Virginia, and Washington D.C. Gulf Coast market — Alabama, Florida, Georgia, Louisiana, Mississippi, Oklahoma, Quintana Roo (Mexico), South Carolina and Texas West market — Arizona, California and New Mexico U.S. Concrete — British Columbia (Canada), California, Hawaii, New Jersey, New York, Oklahoma, Pennsylvania, Texas, the U.S. Virgin Islands and Washington D.C.