REVENUES (Revenues by Geographic Market) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	$ 1,516,506	$ 1,309,890	$ 3,945,897	$ 3,681,707
Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	1,613,760	1,388,324	4,175,360	3,889,248
Intersegment Sales [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	(97,254)	(78,434)	(229,463)	(207,541)
U.S. Concrete, Inc. [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues		155,034		155,035
East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	470,069	480,378	1,249,387	1,260,097
Gulf Coast [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	690,595	611,352	1,944,496	1,795,644
West [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	298,062	296,594	826,442	833,507
Aggregates [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	1,075,155	970,528	2,963,222	2,780,243
Aggregates [Member] | Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1],[2]	1,172,409	1,048,962	3,192,685	2,987,784
Aggregates [Member] | Intersegment Sales [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	(97,254)	(78,434)	(229,463)	(207,541)
Aggregates [Member] | U.S. Concrete, Inc. [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues		33,330		33,330
Aggregates [Member] | East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	362,913	360,985	960,679	951,090
Aggregates [Member] | Gulf Coast [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	616,832	535,215	1,743,200	1,596,321
Aggregates [Member] | West [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	159,334	152,762	455,476	440,373
Asphalt [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	220,652	235,201	580,396	597,940
Asphalt [Member] | Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1],[3]	220,652	235,201	580,396	597,940
Asphalt [Member] | Intersegment Sales [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]		0		0
Asphalt [Member] | U.S. Concrete, Inc. [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues		0		0
Asphalt [Member] | East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	44,019	46,212	104,216	102,053
Asphalt [Member] | Gulf Coast [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	52,601	55,894	140,088	140,253
Asphalt [Member] | West [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	124,032	133,095	336,092	355,634
Concrete [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	219,225	102,807	396,785	298,255
Concrete [Member] | Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	219,225	102,807	396,785	298,255
Concrete [Member] | Intersegment Sales [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]		0		0
Concrete [Member] | U.S. Concrete, Inc. [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues		121,704		121,705
Concrete [Member] | East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	63,137	73,181	184,492	206,954
Concrete [Member] | Gulf Coast [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	19,688	18,889	55,714	53,801
Concrete [Member] | West [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	14,696	10,737	34,874	37,500
Calcium [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	1,474	1,354	5,494	5,269
Calcium [Member] | Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	1,474	1,354	5,494	5,269
Calcium [Member] | Intersegment Sales [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]		0		0
Calcium [Member] | U.S. Concrete, Inc. [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues		0		0
Calcium [Member] | East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	0	0	0	0
Calcium [Member] | Gulf Coast [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	1,474	1,354	5,494	5,269
Calcium [Member] | West [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total revenues	[1]	$ 0	$ 0	$ 0	$ 0

[1] ¹ The geographic markets are defined by states/countries 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.

[2] Includes product sales (crushed stone, sand and gravel, sand, and other aggregates), as well as freight & delivery costs that we pass along to our customers, and service revenues (see Note 4) related to aggregates.

[3] Includes product sales, as well as service revenues (see Note 4) from our asphalt construction paving business.