Share-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2013

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 statement is summarized below:
			Three Months Ended				Six Months Ended
			31 March				31 March
			2013		2012		2013		2012
	Before-Tax Share-Based Compensation Cost	$	12.3	$	15.6	$	22.4	$	27.4
	Income tax benefit		(4.5)		(5.8)		(8.1)		(9.9)
	After-Tax Share-Based Compensation Cost	$	7.8	$	9.8	$	14.3	$	17.5

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Expected volatility	28.6%–30.4	%
Expected dividend yield	2.4	%
Expected life (in years)	7.3–9.1
Risk-free interest rate	1.2%–1.5	%