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Leases - Minimum lease payments for operating leases expiring subsequent to September 30, 2019 (Details)
$ in Millions
Sep. 30, 2019
USD ($)
Leases [Abstract]  
2020 (remaining period of fiscal year) $ 9.6
2021 10.5
2022 8.5
2023 6.8
2024 5.1
Thereafter 24.7
Total future minimum lease payments 65.2
Less imputed interest (12.7)
Total $ 52.5