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GOODWILL - Changes in Carrying Amount of Goodwill by Reportable Segment (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,531.7
Goodwill of acquired businesses	4.9
Goodwill, ending balance	3,536.6
Aggregates
Goodwill [Roll Forward]
Goodwill, beginning balance	3,330.2
Goodwill of acquired businesses	4.9
Goodwill, ending balance	3,335.1
Asphalt
Goodwill [Roll Forward]
Goodwill, beginning balance	91.6
Goodwill of acquired businesses	0.0
Goodwill, ending balance	91.6
Concrete
Goodwill [Roll Forward]
Goodwill, beginning balance	109.9
Goodwill of acquired businesses	0.0
Goodwill, ending balance	$ 109.9

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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