Receivables From Customers, Net and Notes Receivable, Net - Allowance for Customer Receivables (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Receivables from customers and notes receivable, net [Abstract]
Allowance for Doubtful Accounts Receivable	$ 7.5	$ 7.5		$ 5.7
Provision for Doubtful Accounts	$ 0.4	3.2	$ 0.8
Provision Increase (Decrease)		2.8	0.4
Allowance for Doubtful Accounts Receivable, Write-offs		$ 0.4	0.5
Allowance for Doubtful Accounts Receivable, Recoveries			$ 0.1