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Pensions and Postretirement Benefits - Summary of Company's Expected Future Benefit Payments (Details)
$ in Millions
Dec. 31, 2023
USD ($)
Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2024 $ 11.0
2025 6.5
2026 6.7
2027 6.7
2028 6.5
2029 to 2033 31.7
Postretirement Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2024 0.1
2025 0.1
2026 0.1
2027 0.0
2028 0.0
2029 to 2033 0.2
Postretirement Benefits | Gross  
Defined Benefit Plan Disclosure [Line Items]  
2024 0.8
2025 0.7
2026 0.7
2027 0.6
2028 0.5
2029 to 2033 2.2
Postretirement Benefits | Expected Medicare Subsidy  
Defined Benefit Plan Disclosure [Line Items]  
2024 0.7
2025 0.6
2026 0.6
2027 0.6
2028 0.5
2029 to 2033 $ 2.0