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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2024 USD ($) segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Goodwill [Line Items]
Goodwill impairment charges	$ 86.6		$ 86.6	$ 0.0
Goodwill, accumulated impairment losses			$ 390.2
Number of reportable segments | segment			3
Impairment of intangible assets			$ 0.0	$ 0.0	$ 0.0
Former Cement
Goodwill [Line Items]
Goodwill, accumulated impairment losses			252.7
Concrete
Goodwill [Line Items]
Goodwill impairment charges			86.6
Goodwill, accumulated impairment losses			$ 137.5
New York, New Jersey and Pennsylvania
Goodwill [Line Items]
Goodwill impairment charges		$ 50.9

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