Recently Issued and Adopted Accounting Standards (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Cost of Goods Sold | Accounting Standards Update 2017-07
New Accounting Pronouncement, Early Adoption
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 3.2	$ 9.7
Selling, General and Administrative Expenses | Accounting Standards Update 2017-07
New Accounting Pronouncement, Early Adoption
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0.3	0.9
Other income, net | Accounting Standards Update 2017-07
New Accounting Pronouncement, Early Adoption
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 3.5	10.6
Net Cash Used in Investing Activities | Accounting Standards Update 2016-18
New Accounting Pronouncement, Early Adoption
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 1.8