Equity Roll Forward (Schedule Of Change In Equity) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Apr. 01, 2019	Oct. 01, 2018	Sep. 30, 2018	Apr. 01, 2018	Oct. 01, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			$ 8,990
Net earnings common stockholders	$ 604	$ 712	1,589	$ 1,586
Foreign currency translation	(93)	(273)	(40)	(118)
Cash flow hedges	(8)	(14)	2	(22)
Common stockholders' equity	8,755	8,413	8,755	8,413			$ 8,947
Other comprehensive income	(88)	(265)	0	(73)
Ending balance	8,804	8,460	8,804	8,460
Common stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Ending balance	477	477	477	477
Additional paid-in-capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	380	323	348	297
Stock plans	7	9	39	35
Ending balance	387	332	387	332
Retained earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	23,475	22,254	23,072	21,995
Net earnings common stockholders	604	712	1,589	1,586
Dividends paid	(302)	(306)	(909)	(924)
Adoption of accounting standard updates					$ 0	$ 25		$ 0	$ 3
Ending balance	23,777	22,660	23,777	22,660
Accumulated other comprehensive income (loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(928)	(827)	(1,015)	(1,019)
Foreign currency translation	(93)	(273)	(41)	(118)
Pension and postretirement	13	22	38	67
Cash flow hedges	(8)	(14)	2	(22)
Ending balance	(1,016)	(1,092)	(1,016)	(1,092)
Treasury stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(14,878)	(13,735)	(13,935)	(13,032)
Purchases	0	(250)	(1,000)	(1,000)
Issued under stock plans	8	21	65	68
Ending balance	(14,870)	(13,964)	(14,870)	(13,964)
Noncontrolling interests in subsidiaries
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	46	45	43	52
Dividends paid	(5)	(5)	(10)	(21)
Net earnings	8	7	15	16
Other comprehensive income	0	0	1	0
Ending balance	$ 49	$ 47	$ 49	$ 47