Share-Based Compensation (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Share-Based Compensation (Textuals) [Abstract]
Share-based compensation expense, recognized	$ 10.1	$ 9.2	$ 29.3	$ 27.1
Stock Option [Member]
Share-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period			1,727	2,169
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 21.39	$ 13.59
Performance shares [Member]
Share-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			77	146
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 87.00	$ 54.81
Restricted stock and restricted stock units [Member]
Share-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			68	146
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 74.52	$ 43.66
Unrestricted Stock [Member]
Share-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			11	11
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 69.79	$ 44.20