Basis of Presentation and Accounting Policies (Details Textual) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016
Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 22.6		$ 24.5
Allowance for certain customer returns, rebates and incentives	$ 8.0		$ 7.9
Antidilutive share-based compensation awards	1.0	2.9
Capital expenditures in accounts payable or other current liabilities at period end	$ 12.9	$ 3.4
Outstanding purchase of common stock recorded in accounts payable	$ 4.5	$ 6.9