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Pension and Other Postretirement Benefits - Schedule of Estimated Future Benefit Payments (Details)
$ in Millions
Jun. 30, 2023
USD ($)
Pension Benefits  
Estimated future benefit payments  
2024 $ 76.1
2025 73.5
2026 72.5
2027 71.3
2028 69.8
2029-2033 323.7
Other Benefits  
Estimated future benefit payments  
2024 16.1
2025 16.0
2026 15.9
2027 15.6
2028 15.4
2029-2033 $ 72.2