SEGMENT REPORTING (Segment Financial Disclosure) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	[1]	$ 2,185.8	$ 2,088.3	$ 5,947.6	$ 5,583.3
Gross profit		591.0	492.9	1,476.3	1,207.8
Depreciation, Depletion, Accretion & Amortization (DDA&A)		161.1	151.0	464.4	435.0
Cash and cash equivalents and restricted cash		345.0	146.9	345.0	146.9	$ 161.5	$ 241.5
Total assets		14,620.5	14,615.8	14,620.5	14,615.8	$ 14,234.6
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	2,340.2	2,253.3	6,353.5	6,004.4
Total assets	[2],[3]	13,986.7	14,162.8	13,986.7	14,162.8
Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	(154.4)	(165.0)	(405.9)	(421.1)
Aggregates [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	1,471.7	1,325.5	4,093.0	3,592.4
Aggregates [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1],[4]	1,626.1	1,490.5	4,498.9	4,013.5
Gross profit		508.4	436.1	1,309.8	1,081.3
Depreciation, Depletion, Accretion & Amortization (DDA&A)		125.6	113.5	357.4	324.4
Total assets	[2],[3]	11,821.9	11,713.5	11,821.9	11,713.5
Aggregates [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	(154.4)	(165.0)	(405.9)	(421.1)
Asphalt [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	347.2	310.2	854.3	752.1
Asphalt [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1],[5]	347.2	310.2	854.3	752.1
Gross profit		55.9	29.5	113.3	40.2
Depreciation, Depletion, Accretion & Amortization (DDA&A)		8.8	8.9	26.7	26.0
Total assets	[2],[3]	648.6	671.3	648.6	671.3
Asphalt [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	0.0	0.0	0.0	0.0
Concrete [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	364.6	450.5	993.3	1,233.4
Concrete [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	364.6	450.5	993.3	1,233.4
Gross profit		26.0	26.5	50.7	84.7
Depreciation, Depletion, Accretion & Amortization (DDA&A)		20.5	21.7	60.4	63.5
Total assets	[2],[3],[6]	1,512.4	1,773.8	1,512.4	1,773.8
Concrete [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	0.0	0.0	0.0	0.0
Calcium [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	2.3	2.1	7.0	5.4
Calcium [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	2.3	2.1	7.0	5.4
Gross profit		0.7	0.8	2.5	1.6
Depreciation, Depletion, Accretion & Amortization (DDA&A)		0.0	0.0	0.1	0.1
Total assets	[2],[3]	3.8	4.2	3.8	4.2
Calcium [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	0.0	0.0	0.0	0.0
Other Segments [Member]
Segment Reporting Information [Line Items]
Depreciation, Depletion, Accretion & Amortization (DDA&A)		6.2	6.9	19.8	21.0
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets		$ 288.8	$ 306.1	$ 288.8	$ 306.1

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

[2] Certain temporarily idled assets are included within a segment's Identifiable Assets but the associated DDA&A is shown within Other in the DDA&A section above as the related DDA&A is excluded from segment gross profit

[3] The increase in Aggregates is primarily due to 2022 acquisitions, and the decrease in Concrete is primarily due to the divestiture of concrete operations in New Jersey, New York and Pennsylvania in November 2022 (see Note 16)

[4] 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

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

[6] Includes assets classified as held for sale (see Note 16)