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REVENUES - Narrative (Details) $ in Millions	3 Months Ended		24 Months Ended
REVENUES - Narrative (Details) $ in Millions	Mar. 31, 2026 USD ($) quarry	Mar. 31, 2025 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2027 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Revenue Recognition [Line Items]
Total revenues	$ 1,755.9	$ 1,634.6
Proceeds from sale of future production			$ 226.9
Number of quarries \| quarry	8
Estimated deferred revenue to be recognized in the next 12 months	$ 136.5	143.7			$ 138.1	$ 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	$ 1,352.6	1,248.9
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	$ 204.2	229.9
Construction Paving \| Minimum
Revenue Recognition [Line Items]
Remaining period to completion	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	28 months
Service
Revenue Recognition [Line Items]
Total revenues	$ 43.7	$ 44.8
Percent of total revenues (as percent)	2.50%	2.70%