Equity (Schedule Of Change In Equity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Total Stockholders' Equity [Line Items]
Beginning balance			$ 10,442
Net earnings	214	787	1,258	1,724
Other comprehensive income (loss)	(37)	(245)	(20)	(126)
Cash dividends			(930)
Net treasury stock purchases and other			(486)
Ending balance	10,264		10,264
Common Stockholders' Equity [Member]
Total Stockholders' Equity [Line Items]
Beginning balance			10,295
Net earnings			1,209
Other comprehensive income (loss)			(14)
Cash dividends			(888)
Net treasury stock purchases and other			(486)
Ending balance	10,116		10,116
Noncontrolling Interest [Member]
Total Stockholders' Equity [Line Items]
Beginning balance			147
Net earnings			49
Other comprehensive income (loss)			(6)
Cash dividends			(42)
Net treasury stock purchases and other			0
Ending balance	$ 148		$ 148