Other Income (Expense), Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Income (Expense), Net
Equity in net income (loss) of affiliates			$ (0.2)	$ 2.6	$ (0.8)
Foreign currency exchange gain (loss), net			(0.2)	(0.6)	0.9
Business acquisition and transition costs, net			0.2		1.0
Gain on exercise of warrants		5.2
Service agreement cancellation		2.5
Other, net	0.1		(0.1)		(0.8)
Other income and expense, net	0.1		(0.3)	9.7	0.3
Exercised amount of warrants to purchase the common stock of Forethought		$ 6.2