GOODWILL (Changes in Carrying Amount of Goodwill by Reportable Segment) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022
Goodwill [Line Items]
Goodwill, Beginning balance	$ 3,689,600,000
Goodwill impairment	0	$ (50,900,000)	$ 0
Goodwill, Ending balance	3,689,600,000		$ 3,709,200,000
Aggregates [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	3,330,300,000
Goodwill, Ending balance	3,330,300,000
Asphalt [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	91,600,000
Goodwill, Ending balance	91,600,000
Concrete [Member]
Goodwill [Line Items]
Goodwill, Beginning balance	267,700,000
Goodwill, Ending balance	267,700,000
Calcium [Member]
Goodwill [Line Items]
Goodwill, Beginning balance
Goodwill, Ending balance