Equity (Schedule Of Change In Equity) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at September 30, 2013	$ 10,718
Net earnings	477	466
Other comprehensive income (loss)	41	113
Cash dividends	(308)
Net (purchases) issuances of common stock and other	(45)
Balance at December 31, 2013	10,883
Common Stockholders' Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at September 30, 2013	10,585
Net earnings	462
Other comprehensive income (loss)	43
Cash dividends	(304)
Net (purchases) issuances of common stock and other	(45)
Balance at December 31, 2013	10,741
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at September 30, 2013	133
Net earnings	15
Other comprehensive income (loss)	(2)
Cash dividends	(4)
Net (purchases) issuances of common stock and other	0
Balance at December 31, 2013	$ 142