Quarterly report pursuant to Section 13 or 15(d)

Other Income (Expense), Net (Details)

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Other Income (Expense), Net (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Accumulated other comprehensive income (loss) [Line Items]        
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions $ 0.0 $ 0.3 $ 0.0 $ 1.0
Foreign currency exchange (loss) gain, net (0.5) (0.6) (0.8) (1.4)
Other, net (0.7) (0.3) (0.8) (1.5)
Other income (expense), net $ (1.2) $ (0.6) $ (1.6) $ (1.9)