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INCOME TAXES - Sources and Tax Effects of Differences Between Expenses (Benefit) Continuing Operations before Income Taxes (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]      
Income tax expense at the federal statutory tax rate $ 246.1 $ 261.5 $ 165.5
Statutory depletion (41.0) (39.0) (30.6)
State and local income taxes, net of federal income tax benefit 51.4 48.7 37.5
Nondeductible goodwill 16.2 16.2 10.7
Valuation allowance $ 0.1 $ 10.3 $ 14.5
Effective Income Tax Rate Reconciliation, Deferred Tax Rate Remeasurement, Percent (0.019) 0.000 0.000
Deferred tax rate remeasurement $ (21.9) $ 0.0 $ 0.0
Other, net 0.5 1.7 (4.6)
Total income tax expense $ 251.4 $ 299.4 $ 193.0
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Income tax expense at the federal statutory tax rate 21.00% 21.00% 21.00%
Statutory depletion (3.50%) (3.10%) (3.90%)
State and local income taxes, net of federal income tax benefit 4.40% 3.90% 4.80%
Nondeductible goodwill 1.40% 1.30% 1.40%
Valuation allowance 0.00% 0.80% 1.80%
Other, net 0.00% 0.10% (0.60%)
Total income tax expense / Effective tax rate 21.40% 24.00% 24.50%