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Pension and Other Postretirement Benefits - Estimated Future Benefit Payments (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Pensions  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2023 $ 86.2
2024 86.8
2025 85.2
2026 85.0
2027 82.5
2028 - 2032 390.5
Other postretirement benefits  
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]  
2023 1.6
2024 1.5
2025 1.4
2026 1.3
2027 1.2
2028 - 2032 $ 4.3