Annual report pursuant to Section 13 and 15(d)

Other (Expense) Income, Net (Details)

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Other (Expense) Income, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Other Nonoperating Income (Expense) [Abstract]      
Equity in net income (loss) of affiliates $ 0.3 $ (2.1) $ 2.8
Foreign currency exchange gain (loss), net 0.3 (4.4) (1.5)
Gain on exercise of warrants 0.0 0.0 5.2
Service cancellation agreement 0.0 0.0 2.5
Other, net (2.3) (1.4) (0.3)
Other (expense) income, net $ (1.7) (7.9) $ 8.7
Exercised amount of warrants to purchase the common stock of Forethought   $ 6.2