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Share-Based Compensation (Tables)
9 Months Ended
Jun. 30, 2014
Share-Based Compensation [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Expected volatility29.8%–30.3%
Expected dividend yield2.5%
Expected life (in years)7.4–8.4
Risk-free interest rate2.3%–2.7%
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 EndedNine Months Ended
30 June30 June
2014201320142013
Before-Tax Share-Based Compensation Cost$ 9.1$ 10.6$ 32.5$ 33.0
Income tax benefit (3.2) (3.8) (11.4) (11.9)
After-Tax Share-Based Compensation Cost$ 5.9$ 6.8$ 21.1$ 21.1