SEGMENT REPORTING (Segment Financial Disclosure) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	[1]	$ 2,088.3	$ 1,516.5	$ 5,583.3	$ 3,945.9
Gross profit		492.9	394.1	1,207.8	1,021.7
Depreciation, Depletion, Accretion & Amortization (DDA&A)		151.0	117.5	435.0	321.0
Cash and cash equivalents and restricted cash		146.9	136.4	146.9	136.4	$ 241.5	$ 1,198.0
Total assets		14,615.8	13,688.0	14,615.8	13,688.0	$ 13,682.6
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	2,253.3	1,613.8	6,004.4	4,175.4
Total assets	[2]	14,162.8	13,283.0	14,162.8	13,283.0
Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	(165.0)	(97.3)	(421.1)	(229.5)
Aggregates [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	1,325.5	1,075.1	3,592.4	2,963.2
Aggregates [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1],[3]	1,490.5	1,172.4	4,013.5	3,192.7
Gross profit		436.1	372.4	1,081.3	969.8
Depreciation, Depletion, Accretion & Amortization (DDA&A)		113.5	93.3	324.4	258.5
Total assets	[2]	11,713.5	10,940.6	11,713.5	10,940.6
Aggregates [Member] | Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	(165.0)	(97.3)	(421.1)	(229.5)
Asphalt [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	310.2	220.7	752.1	580.4
Asphalt [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1],[4]	310.2	220.7	752.1	580.4
Gross profit		29.5	7.1	40.2	17.6
Depreciation, Depletion, Accretion & Amortization (DDA&A)		8.9	9.0	26.0	27.1
Total assets	[2]	671.3	617.8	671.3	617.8
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]	450.5	219.2	1,233.4	396.8
Concrete [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	450.5	219.2	1,233.4	396.8
Gross profit		26.5	14.3	84.7	32.4
Depreciation, Depletion, Accretion & Amortization (DDA&A)		21.7	8.7	63.5	16.6
Total assets	[2],[5]	1,773.8	1,720.7	1,773.8	1,720.7
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]	2.1	1.5	5.4	5.5
Calcium [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenues	[1]	2.1	1.5	5.4	5.5
Gross profit		0.8	0.3	1.6	1.9
Depreciation, Depletion, Accretion & Amortization (DDA&A)		0.0	0.0	0.1	0.1
Total assets	[2]	4.2	3.9	4.2	3.9
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)		6.9	6.5	21.0	18.7
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets		$ 306.1	$ 268.6	$ 306.1	$ 268.6

[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, South Carolina, Texas, Freeport (Bahamas), Puerto Cortés (Honduras) and Quintana Roo (Mexico) West market - Arizona, California and New Mexico U.S. Concrete - California, Hawaii, New Jersey, New York, Oklahoma, Pennsylvania, Texas, U.S. Virgin Islands, Washington D.C., 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] 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.

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

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