Equity Roll Forward (Schedule Of Change In Equity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 8,770
Net earnings	$ 719	$ 425	1,602	$ 1,040
Other comprehensive income (loss)	(265)	$ 114	(73)	$ 422
Cash dividends			(945)
Purchases of treasury stock, net of issuances			(897)
Adoption of accounting standard update	3		3
Ending balance	8,460		8,460
Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			8,718
Ending balance	8,413		8,413
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings			1,586
Cash dividends			(924)
Adoption of accounting standard update	3		3
AOCI Attributable to Parent [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss)			(73)
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Purchases of treasury stock, net of issuances			(897)
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			52
Net earnings			16
Other comprehensive income (loss)			0
Cash dividends			(21)
Purchases of treasury stock, net of issuances			0
Adoption of accounting standard update	0		0
Ending balance	$ 47		$ 47