REVENUES (Tables)	12 Months Ended
	Dec. 31, 2021
REVENUES [Abstract]
Revenues by Geographic Market	For the Year Ended December 31, 2021 in millionsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$      1,283.7  $         142.4  $         243.4  $             0.0  $       1,669.5  Gulf Coast 2,350.5  179.6  75.4  6.9  2,612.4  West 597.8  455.8  47.0  0.0  1,100.6  U.S. Concrete 113.0  0.0  401.0  0.0  514.0  Segment sales$      4,345.0  $         777.8  $         766.8  $             6.9  $       5,896.5  Intersegment sales (344.3) 0.0  0.0  0.0  (344.3) Total revenues$      4,000.7  $         777.8  $         766.8  $             6.9  $       5,552.2  For the Year Ended December 31, 2020 in millionsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$      1,198.1  $         142.2  $         263.7  $             0.0  $       1,604.0  Gulf Coast 2,165.2  178.5  71.1  7.7  2,422.5  West 581.0  471.9  48.8  0.0  1,101.7  Segment sales$      3,944.3  $         792.6  $         383.6  $             7.7  $       5,128.2  Intersegment sales (271.4) 0.0  0.0  0.0  (271.4) Total revenues$      3,672.9  $         792.6  $         383.6  $             7.7  $       4,856.8  For the Year Ended December 31, 2019 in millionsAggregates Asphalt Concrete Calcium Total Total Revenues by Geographic Market 1 East$      1,254.8  $         166.5  $         261.2  $             0.0  $       1,682.5  Gulf Coast 2,117.5  194.4  66.6  8.2  2,386.7  West 618.0  494.9  67.8  0.0  1,180.7  Segment sales$      3,990.3  $         855.8  $         395.6  $             8.2  $       5,249.9  Intersegment sales (320.8) 0.0  0.0  0.0  (320.8) Total revenues$      3,669.5  $         855.8  $         395.6  $             8.2  $       4,929.1  1The 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 TexasWest market — Arizona, California and New MexicoU.S. Concrete — British Columbia (Canada), California, Hawaii, New Jersey, New York, Oklahoma, Pennsylvania, Texas, the U.S. Virgin Islands and Washington D.C.
Freight & Delivery Revenues	in millions2021 2020 2019 Freight & Delivery Revenues Total revenues$      5,552.2  $      4,856.8  $      4,929.1  Freight & delivery revenues 1 (768.3) (738.5) (747.9) Total revenues excluding freight & delivery$      4,783.9  $      4,118.3  $      4,181.2  1Includes freight & delivery to remote distribution sites.
Reconciliation of Deferred Revenue Balances	in millions2021 2020 2019 Deferred Revenue Balance at beginning of year$          178.0  $        185.3  $        192.8  Revenue recognized from deferred revenue (7.9) (7.3) (7.5) Balance at end of year$          170.1  $        178.0  $        185.3