SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Results from Discontinued Operations	in millions2021 2020 2019 Discontinued Operations Pretax loss$            (4.5) $          (4.7) $          (6.5) Income tax benefit 1.2  1.2  1.7  Loss on discontinued operations, net of tax$            (3.3) $          (3.5) $          (4.8)
Depreciation, Depletion, Accretion and Amortization Expense	in millions2021 2020 2019 Depreciation, Depletion, Accretion and Amortization Depreciation$          343.4  $        315.2  $        300.6  Depletion 31.2  21.0  22.4  Accretion 13.1  12.4  11.0  Amortization of finance leases 7.1  1.6  0.1  Amortization of intangibles 68.2  46.6  40.5  Total$          463.0  $        396.8  $        374.6
Fair Value Measurement on Recurring Basis	Level 1 Fair Valuein millions2021 2020 Fair Value Recurring Rabbi Trust Mutual funds$          34.7  $         28.1  Total$          34.7  $         28.1  Level 2 Fair Valuein millions2021 2020 Fair Value Recurring Rabbi Trust Money market mutual fund$            0.6  $          0.8  Total$            0.6  $          0.8
Liabilities Under Self-Insurance Program	dollars in millions2021 2020 Self-insurance Program Self-insured liabilities (undiscounted)$          137.7  $          75.6  Insured liabilities (undiscounted) 3.6  3.7  Discount rate1.10% 0.30% Amounts Recognized in Consolidated Balance Sheets Other accounts and notes receivable$              0.0  $            0.6  Investments and long-term receivables 3.4  3.6  Other current liabilities (50.7) (20.7) Other noncurrent liabilities (83.2) (57.6) Net insurance liabilities (discounted)$         (130.5) $         (74.1)
Estimated Payments (Undiscounted) Under Self-Insurance Program	in millions Estimated Payments under Self-insurance Program 2022$           51.7  2023 32.6  2024 26.8  2025 7.0  2026 3.8
Unrecognized Compensation Expense	Unrecognized Expected Compensation Weighted-average dollars in millionsExpense Recognition (Years) Share-based Compensation SOSARs 1$             1.2  1.3  Performance shares 10.5  1.7  Restricted shares 8.5  1.7  Total/weighted-average$           20.2  1.7  1Stock-Only Stock Appreciation Rights (SOSARs)
Pretax Compensation Expense	in millions2021 2020 2019 Employee Share-based Compensation Awards Pretax compensation expense$           32.5  $          31.4  $          30.1  Income tax benefits 4.7  5.0  7.7
Weighted-Average Common Shares Outstanding Assuming Dilution	in millions2021 2020 2019 Weighted-average common shares outstanding 132.8  132.6  132.3  Dilutive effect of SOSARs 0.3  0.3  0.6  Other stock compensation plans 0.4  0.3  0.5  Weighted-average common shares outstanding, assuming dilution 133.5  133.2  133.4
Antidilutive Common Stock Equivalents	in millions2021 2020 2019 Antidilutive common stock equivalents 0.0  0.1  0.1