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GOODWILL (Tables)
 3 Months Ended
Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Carrying Amount of Goodwill by Reportable Segment
Changes in the carrying amount of goodwill by reportable segment from December 31, 2024 to March 31, 2025 are shown below:
in millionsAggregatesAsphaltConcreteTotal
Goodwill at December 31, 2024$3,673.2 $91.6 $23.3 $3,788.1 
Goodwill of acquired businesses 1
27.5 0.0 0.0 27.5 
Goodwill of divested businesses 1
(0.6)0.0 0.0 (0.6)
Goodwill at March 31, 2025 $3,700.1 $91.6 $23.3 $3,815.0 
1See Note 16 for acquisitions and divestitures.