Quarterly report pursuant to Section 13 or 15(d)

Leases - Schedule fo Supplemental Statement of Cash Flow Information (Details)

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Leases - Schedule fo Supplemental Statement of Cash Flow Information (Details) - USD ($)
$ in Millions
6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases [Abstract]    
Cash paid for amounts included in the measurement of operating lease liabilities $ 21.0 $ 18.0
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities $ 13.1 $ 18.7