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GOODWILL AND INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill by Reportable Segment (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Goodwill [Roll Forward]      
Goodwill, beginning balance   $ 3,531.7 $ 3,689.6
Goodwill of acquired businesses   (343.0) (0.1)
Goodwill of divested businesses     (157.8)
Goodwill impairment $ (86.6) (86.6) 0.0
Goodwill, ending balance   3,788.1 3,531.7
Aggregates      
Goodwill [Roll Forward]      
Goodwill, beginning balance   3,330.2 3,330.3
Goodwill of acquired businesses   (343.0) (0.1)
Goodwill of divested businesses     (0.0)
Goodwill impairment   (0.0)  
Goodwill, ending balance   3,673.2 3,330.2
Asphalt      
Goodwill [Roll Forward]      
Goodwill, beginning balance   91.6 91.6
Goodwill of acquired businesses   (0.0) (0.0)
Goodwill of divested businesses     (0.0)
Goodwill impairment   (0.0)  
Goodwill, ending balance   91.6 91.6
Concrete      
Goodwill [Roll Forward]      
Goodwill, beginning balance   109.9 267.7
Goodwill of acquired businesses   (0.0) (0.0)
Goodwill of divested businesses     (157.8)
Goodwill impairment   (86.6)  
Goodwill, ending balance   $ 23.3 $ 109.9