Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 23.5	$ 4.3
Other Comprehensive (Loss) Income, net of tax (Note 7):
Available-for-sale securities and hedges	10.2	0.1
Foreign currency translation adjustment	(39.5)	(10.2)
Change in pension and postretirement defined benefit plans	1.3	0.7
Total Other Comprehensive Loss, net of tax	(28.0)	(9.4)
Total Comprehensive Loss	(4.5)	(5.1)
Less: Comprehensive loss attributable to noncontrolling interests	(0.3)	(0.5)
Total Comprehensive Loss Attributable to Common Shareholders	$ (4.2)	$ (4.6)