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Leases - Minimum Rental Payments Required Under Operating Leases (Details)
$ in Millions
Oct. 31, 2020
USD ($)
Leases [Abstract]  
2021 $ 40.7
2022 36.3
2023 32.6
2024 29.3
2025 28.0
Thereafter 158.4
Total lease payments 325.3
Less: interest 55.2
Present value of lease liabilities $ 270.1