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PENSION AND POST-RETIREMENT PLANS - ESTIMATED BENEFIT PAYMENTS (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Pension Benefits  
Estimated future benefit payments  
2023 $ 14.6
2024 14.8
2025 15.1
2026 15.2
2027 15.4
2028-2032 77.7
Total remaining future undiscounted payments due 152.8
Post-retirement benefits  
Estimated future benefit payments  
2023 0.9
2024 0.9
2025 1.0
2026 1.0
2027 1.0
2028-2032 4.9
Total remaining future undiscounted payments due 9.7
Nonqualified Plan | Pension Benefits  
Estimated future benefit payments  
2023 0.7
2024 0.3
2025 0.4
2026 0.6
2027 0.9
2028-2032 2.7
Total remaining future undiscounted payments due $ 5.6