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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | $ 2,400.7 | $ 2,296.9 | $ 1,667.4
Other adjustments | (1.5) | 1.2 | 0.2
Balance at the end of the period | 2,652.0 | 2,400.7 | 2,296.9
Comprehensive Income (Loss): |  |  |
Tax benefit (expense) on other comprehensive income (loss) | (2.5) | (1.2) | (9.3)
Pensions |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | (20.3) | (25.8) |
Amortization of net gain (loss) | 6.3 | 5.5 |
Balance at the end of the period | (14.0) | (20.3) | (25.8)
Post Retirement |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | 11.0 | 18.7 |
Amortization of prior service cost | (2.8) | (2.8) |
Amortization of net gain (loss) | (0.1) | (4.9) |
Balance at the end of the period | 8.1 | 11.0 | 18.7
Non-Qualified Plans |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | (0.2) | 0.1 |
Amortization of net gain (loss) | (0.2) | (0.3) |
Balance at the end of the period | (0.4) | (0.2) | 0.1
Other |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | 1.3 | 0.1 |
Foreign currency exchange | (1.9) | (0.5) |
Other adjustments | 0.4 | 1.7 |
Balance at the end of the period | (0.2) | 1.3 | 0.1
Accumulated Other Comprehensive Income (Loss) |  |  |
Changes in accumulated other comprehensive income (loss) by component, net of taxes |  |  |
Balance at the beginning of the period | (8.2) | (6.9) | (30.9)
Amortization of prior service cost | (2.8) | (2.8) |
Amortization of net gain (loss) | 6.0 | 0.3 |
Foreign currency exchange | (1.9) | (0.5) |
Other adjustments | 0.4 | 1.7 |
Balance at the end of the period | $ (6.5) | $ (8.2) | $ (6.9)

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