Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
United States [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 0.4	$ 0.4	$ 0.4
Interest cost	2.8	2.7	2.7
Expected return on assets	(4.4)	(4.5)	(4.4)
Recognized net actuarial loss	0.2	1.1	1.6
Net periodic benefit cost	$ (1.0)	$ (0.3)	$ 0.3
Weighted average assumptions
Discount rate	4.10%	3.70%	3.50%
Expected return on plan assets	6.50%	7.00%	7.00%
Non U.S. Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1.9	$ 2.0	$ 2.5
Interest cost	3.4	3.6	3.3
Expected return on assets	(3.9)	(4.2)	(4.1)
Settlements and curtailments	0.3	0.1	0.3
Recognized net actuarial loss	1.8	1.4	2.7
Net periodic benefit cost	$ 3.5	$ 2.9	$ 4.7
Non U.S. Plans [Member] | Minimum [Member]
Weighted average assumptions
Discount rate	1.00%	1.13%	1.00%
Expected return on plan assets	1.00%	1.13%	1.00%
Rate of compensation increase	2.25%	1.37%	2.25%
Non U.S. Plans [Member] | Maximum [Member]
Weighted average assumptions
Discount rate	8.30%	7.50%	8.68%
Expected return on plan assets	4.01%	4.13%	3.70%
Rate of compensation increase	7.00%	7.00%	7.00%