Short-term debt and current portion of long-term debt (Details) - USD ($) $ in Millions	Sep. 30, 2015	Sep. 30, 2014
Bank loans
Senior Term Loan ("Facility A" Term Loan, variable rate) Installment repayable in November 2015	$ 22.5	$ 0.0
Accrued interest on long-term bank loans	0.3	0.3
Other short-term bank loans	0.1	0.1
Bank loans	22.9	0.4
Other short-term financial liabilities	0.2	1.1
Short-Term Financial Liabilities	$ 23.1	$ 1.5