XML 66 R54.htm IDEA: XBRL DOCUMENT v3.10.0.1
Financial Instruments and Risk Management - Derivative Instruments, Gain (Loss) (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Sep. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]      
Gain Recognized in Income $ 9.0 $ 0.0  
Not Designated as Hedging Instrument | Foreign currency contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Estimated Fair Value Asset (1) 0.2   $ (0.1)
Gain Recognized in Income $ 1.0 $ 0.3