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REVENUES - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended		24 Months Ended
REVENUES - Narrative (Details) $ in Millions	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) quarry	Jun. 30, 2025 USD ($)	Dec. 31, 2013 USD ($)	Jun. 30, 2027 USD ($)	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Revenue Recognition [Line Items]
Total revenues	$ 2,155.8	$ 2,102.4	$ 3,911.7	$ 3,737.0
Proceeds from sale of future production					$ 226.9
Number of quarries \| quarry			8
Estimated deferred revenue to be recognized in the next 12 months	134.5	141.8	$ 134.5	141.8			$ 136.5	$ 138.1	$ 143.7	$ 145.3
Forecast
Revenue Recognition [Line Items]
Estimated deferred revenue to be recognized in the next 12 months						$ 7.5
Minimum
Revenue Recognition [Line Items]
Coverage of warranty provisions			9 months
Maximum
Revenue Recognition [Line Items]
Coverage of warranty provisions			1 year
Aggregates
Revenue Recognition [Line Items]
Total revenues	1,639.0	1,512.9	$ 2,991.6	2,761.7
Aggregates \| Minimum
Revenue Recognition [Line Items]
Percent of shipments used for publicly funded construction (as percent)			40.00%
Aggregates \| Maximum
Revenue Recognition [Line Items]
Percent of shipments used for publicly funded construction (as percent)			55.00%
Construction Paving
Revenue Recognition [Line Items]
Revenue from unsatisfied performance obligations	$ 206.8	320.4	$ 206.8	320.4
Construction Paving \| Minimum
Revenue Recognition [Line Items]
Remaining period to completion	1 month		1 month
Construction Paving \| Maximum
Revenue Recognition [Line Items]
Costs for paving contracts expense, expected amortization period (in years)			1 year
Remaining period to completion	27 months		27 months
Service
Revenue Recognition [Line Items]
Total revenues	$ 71.8	$ 87.9	$ 115.4	$ 132.7
Percent of total revenues (as percent)	3.30%	4.20%	3.00%	3.60%