Share-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2016

Share-Based Compensation [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Share-based compensation cost recognized in the consolidated income statements is summarized below:
			Three Months Ended				Six Months Ended
			31 March				31 March
			2016		2015		2016		2015
	Before-Tax Share-Based Compensation Cost	$	9.3	$	12.9	$	19.5	$	24.8
	Income Tax Benefit		(3.3)		(4.7)		(6.8)		(8.7)
	After-Tax Share-Based Compensation Cost	$	6.0	$	8.2	$	12.7	$	16.1

Schedule of Share-based Payment Award, Market-Based Deferred Stock Units, Valuation Assumptions [Table Text Block]

Expected volatility	20.5	%
Risk-free interest rate	1.2	%
Expected dividend yield	2.2	%