Leases (Summary of Lease Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2020		Jun. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease, right-of-use asset	$ 44.9		$ 44.9
Short term lease obligation	9.8		9.8	$ 0.0
Operating lease, liability, noncurrent	35.3		35.3
Operating lease, liability	$ 45.1		$ 45.1
Operating lease, weighted average remaining lease term	11 years		11 years
Operating lease, weighted average discount rate, percent	7.10%		7.10%
Operating lease, expense	$ 3.3	[1]	$ 10.4
Right-of-use asset obtained in exchange for operating lease liability	0.5		1.1
Operating lease, payments	$ 3.4		$ 10.4

[1] Lease expense is included in Cost of products sold or SG&A expense based on the nature of the lease. Short-term lease expense is excluded from this amount and is not material.