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INCOME TAXES (Details 3) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Deferred Tax Assets |  |  |
Pension and postretirement benefits | $ 42.4 | $ 42.9 |
Environmental reserves | 38.3 | 37.4 |
Asset retirement obligations | 16.6 | 13.9 |
Accrued liabilities | 46.1 | 47.4 |
Lease liabilities | 88.1 | 91.4 |
Tax credits | 47.3 | 37.4 |
Net operating losses (NOL) | 54.1 | 23.2 |
Deferred Tax Assets, Other | 3.0 | 2.7 |
Total deferred tax assets | 335.9 | 296.3 |
Valuation allowance | 99.5 | 76.4 | $ 70.1
Net deferred tax assets | 236.4 | 219.9 |
Deferred Tax Liabilities |  |  |
Property, plant and equipment | 439.5 | 481.7 |
Right-of-use lease assets | 86.5 | 89.8 |
Intangible amortization | 76.9 | 68.7 |
Inventory and prepaids | 5.5 | 12.1 |
Taxes on unremitted earnings | 16.8 | 12.0 |
Other miscellaneous items | 0.0 | 2.4 |
Total deferred tax liabilities | 625.2 | 666.7 |
Net deferred income tax liability | $ (388.8) | $ (446.8) |

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