Share-Based Compensation (Narratives) (Details) (USD $)	3 Months Ended
	Dec. 31, 2012
Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Number of stock options granted	1,128,065
Weighted-average exercise price of stock options granted, per option	$ 81.57
Estimated fair value of stock options granted, per option	$ 19.85
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Weighted-average grant date fair value of shares/units	$ 81.66
Number of shares/units granted	239,013
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Award [Line Items]
Weighted-average grant date fair value of shares/units	$ 81.57
Number of shares/units granted	33,632