SEGMENT REPORTING	12 Months Ended
	Dec. 31, 2021
SEGMENT REPORTING [Abstract]
SEGMENT REPORTING	NOTE 15: SEGMENT REPORTINGWe have four operating (and reportable) segments organized around our principal product lines: Aggregates, Asphalt, Concrete and Calcium. Management reviews earnings from these reporting segments principally at the gross profit level.The Aggregates segment produces and sells aggregates (crushed stone, sand and gravel, sand, and other aggregates) and related products and services. During 2021, the Aggregates segment principally served markets in twenty-two states, the U.S. Virgin Islands, Washington D.C., the Bahamas, British Columbia (Canada) and Quintana Roo (Mexico) with a full line of aggregates, and eleven additional states with railroad ballast. The 2021 acquisition of U.S. Concrete expanded our full line aggregates markets by two states (New Jersey and New York), the U.S. Virgin Islands, British Columbia, Canada, and direct shipments to Hawaii. Customers use aggregates primarily in the construction and maintenance of highways, streets and other public works and in the construction of housing and commercial, industrial and other nonresidential facilities. Customers are served by truck, rail and water distribution networks from our production facilities and sales yards. Due to the high weight-to-value ratio of aggregates, markets generally are local in nature. Quarries located on waterways and rail lines allow us to serve remote markets where local aggregates reserves may not be available. The Asphalt segment produces and sells asphalt mix in six states: Alabama, Arizona, California, New Mexico, Tennessee and Texas, and includes asphalt construction paving in three states: Alabama, Tennessee and Texas.The Concrete segment produces and sells ready-mixed concrete in eight states: California, Maryland, New Jersey, New York, Oklahoma, Pennsylvania, Texas and Virginia, in addition to the U.S. Virgin Islands and Washington D.C. In 2021, through our acquisition of U.S. Concrete, we entered the New Jersey, New York, Oklahoma, Pennsylvania and U.S. Virgin Islands concrete markets and expanded our existing markets in California, Texas and Washington D.C. In 2020, we exited the New Mexico ready-mixed concrete market through a divestiture (see Note 19).The Calcium segment consists of a Florida facility that mines, produces and sells calcium products.Aggregates comprise approximately 95% of asphalt mix by weight and 80% of ready-mixed concrete by weight. Our Asphalt and Concrete segments are primarily supplied with their aggregates requirements from our Aggregates segment. These intersegment sales are made at local market prices for the particular grade and quality of product used in the production of asphalt mix and ready-mixed concrete and are excluded from total revenues. Customers for our Asphalt and Concrete segments are generally served locally at our production facilities or by truck. Because asphalt mix and ready-mixed concrete harden rapidly, delivery is time constrained and generally confined to a radius of approximately 20 to 25 miles from the producing facility.The vast majority of our activities are domestic. We sell a relatively small amount of construction aggregates outside the United States. Total domestic revenues were $5,532.0 million in 2021, $4,845.9 million in 2020 and $4,913.0 million in 2019. Nondomestic Aggregates segment revenues were $20.2 million in 2021, $11.0 million in 2020 and $16.1 million in 2019; there were no significant nondomestic revenues in our Asphalt, Concrete or Calcium segments. Long-lived assets outside the United States, which consist primarily of property, plant & equipment, were $459.5 million in 2021, $261.6 million in 2020 and $274.4 million in 2019. Equity method investments of $26.5 million in 2021, $26.5 million in 2020 and $50.6 million in 2019 are included below in the identifiable assets for the Aggregates segment and in investments and long-term receivables on the accompanying Consolidated Balance Sheets. SEGMENT FINANCIAL DISCLOSURE in millions2021 2020 2019 Total Revenues Aggregates 1$         4,345.0  $         3,944.3  $         3,990.3  Asphalt 2 777.8  792.6  855.8  Concrete 766.8  383.6  395.6  Calcium 6.9  7.7  8.2  Segment sales$         5,896.5  $         5,128.2  $         5,249.9  Aggregates intersegment sales (344.3) (271.4) (320.8) Total revenues$         5,552.2  $         4,856.8  $         4,929.1  Gross Profit Aggregates$         1,295.7  $         1,159.2  $         1,146.6  Asphalt 21.2  75.2  63.0  Concrete 54.3  44.2  43.2  Calcium 2.2  2.9  3.1  Total $         1,373.4  $         1,281.5  $         1,255.9  Depreciation, Depletion, Accretion & Amortization (DDA&A) Aggregates$            360.4  $            321.1  $            305.1  Asphalt 36.0  35.0  35.2  Concrete 41.5  16.0  13.6  Calcium 0.2  0.2  0.2  Other 24.9  24.5  20.5  Total$            463.0  $            396.8  $            374.6  Capital Expenditures 3 Aggregates$            423.1  $            331.9  $            383.4  Asphalt 9.3  19.8  9.1  Concrete 18.1  11.7  11.6  Calcium 0.0  0.0  0.0  Corporate 0.0  0.0  0.2  Total$            450.5  $            363.4  $            404.3  Identifiable Assets 4, 5 Aggregates$       10,917.8  $         9,459.2  $         9,334.2  Asphalt 602.0  573.1  558.4  Concrete 1,680.2  305.5  325.1  Calcium 4.0  3.3  3.7  Total identifiable assets$       13,204.0  $       10,341.1  $       10,221.4  General corporate 237.1  147.8  152.9  Cash and cash equivalents and restricted cash 241.5  1,198.0  274.5  Total assets$       13,682.6  $       11,686.9  $       10,648.8  1Includes product sales, as well as freight & delivery costs that we pass along to our customers, and service revenues (see Note 2) related to aggregates.2Includes product sales, as well as service revenues (see Note 2) from our asphalt construction paving business. 3Capital expenditures include capitalized replacements of and additions to property, plant & equipment, including renewals and betterments. Capital expenditures exclude property, plant & equipment obtained by business acquisitions.4Certain 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.5The 2021 increases in Aggregates, Concrete and General corporate Identifiable Assets are largely attributable to the U.S. Concrete acquisition (see Note 19).