Weighted Average Common Shares (Schedule Of Basic And Diluted Earnings Per Share Reconciliation) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares outstanding	642.8	642.2	643.1	644.7
Dilutive shares	1.0	3.0	1.2	2.7
Diluted shares outstanding	643.8	645.2	644.3	647.4