Equity Roll Forward (Schedule Of Change In Equity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 8,128
Net earnings common stockholders	$ 479	$ 564	1,197	$ 2,062
Noncontrolling interests in earnings	11	10	22	20
Net earnings	490	574	1,219	2,082
Other comprehensive income (loss)	19	$ 216	55	$ (483)
Cash dividends			(939)
Net purchases of common stock			(508)
Ending balance	7,955		7,955
Parent Company [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			8,081
Other comprehensive income (loss)			53
Cash dividends			(922)
Net purchases of common stock			(508)
Ending balance	7,901		7,901
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			47
Other comprehensive income (loss)			2
Cash dividends			(17)
Net purchases of common stock			0
Ending balance	$ 54		$ 54