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INCOME TAXES - Schedule of Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Deferred tax assets: |  |
Employment costs | $ 21.4 | $ 21.0
Environmental accruals | 38.5 | 29.2
Net operating loss carryforwards | 66.0 | 54.3
Operating leases | 7.8 | 11.8
Research and development | 45.8 | 39.2
Capitalized and carryforward interest | 48.7 | 18.2
Financial Derivatives | 48.3 | 16.7
Other, net | 52.2 | 54.4
Gross deferred tax assets | 328.7 | 244.8
Valuation allowances | (39.6) | (35.3)
Total deferred tax assets, net of valuation allowances | 289.1 | 209.5
Deferred tax liabilities: |  |
Property, plant and equipment | (101.3) | (117.4)
Goodwill and intangibles | (351.2) | (337.3)
Operating leases | (7.6) | (12.0)
Other, net | (18.3) | (11.7)
Total deferred tax liabilities | (478.4) | (478.4)
Net deferred tax (liabilities) assets | (189.3) | (268.9)
Consolidated Balance Sheets: |  |
Non-current deferred income tax liabilities | (281.6) | (342.5)
Deferred Tax Liabilities Noncurrent |  |
Consolidated Balance Sheets: |  |
Non-current deferred income tax assets | 92.3 | 73.6
Non-current deferred income tax liabilities | $ (281.6) | $ (342.5)

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