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Pension Benefit Obligations - Future payments (Details)
$ in Millions
Sep. 30, 2021
USD ($)
United States  
Expected future benefit payments  
2022 $ 21.0
2023 21.4
2024 20.0
2025 19.7
2026 19.6
2027-2031 83.6
Total 185.3
International  
Expected future benefit payments  
2022 58.6
2023 57.4
2024 58.6
2025 60.1
2026 61.9
2027-2031 339.1
Total $ 635.7