Consolidated Statement of Equity Statement - USD ($) $ in Millions	Total	Common stock	Additional paid-in-capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock	Noncontrolling interests in subsidiaries
Beginning balance at Sep. 30, 2021			$ 522	$ 26,047	$ (872)	$ (16,291)	$ 40
Statement [Roll Forward]
Stock plans			57
Net earnings common stockholders	$ 1,570			1,570
Dividends paid (per share: $0.52, $0.515, $1.04 and $1.03 respectively)				(614)
Foreign currency translation	(132)				(131)
Pension and postretirement	(36)				36
Cash flow hedges	10				10
Purchases						(285)
Issued under stock plans						49
Net earnings							0
Stock compensation							0
Other comprehensive income	(86)						(1)
Ending balance at Mar. 31, 2022	$ 10,614	$ 477	579	27,003	(957)	(16,527)	39
Statement [Roll Forward]
Dividends paid	$ 1.03
Beginning balance at Dec. 31, 2021			564	26,636	(922)	(16,506)	39
Statement [Roll Forward]
Stock plans			15
Net earnings common stockholders	$ 674			674
Dividends paid (per share: $0.52, $0.515, $1.04 and $1.03 respectively)				(307)
Foreign currency translation	(60)				(59)
Pension and postretirement	(18)				18
Cash flow hedges	6				6
Purchases						(27)
Issued under stock plans						6
Net earnings							1
Stock compensation							0
Other comprehensive income	(36)						(1)
Ending balance at Mar. 31, 2022	$ 10,614	477	579	27,003	(957)	(16,527)	39
Statement [Roll Forward]
Dividends paid	$ 0.515
Common stockholders' equity	$ 10,575
Common stockholders' equity	10,364
Beginning balance at Sep. 30, 2022	16,316		57	28,053	(1,485)	(16,738)	5,952
Statement [Roll Forward]
Stock plans			81
Net earnings common stockholders	3,123			3,123
Dividends paid (per share: $0.52, $0.515, $1.04 and $1.03 respectively)				(605)
Foreign currency translation	351				347
Pension and postretirement	33				(33)
Cash flow hedges	23				23
Purchases						(2,000)
Issued under stock plans						60
Net earnings							(27)
Stock compensation							58
Other comprehensive income	341						4
Ending balance at Mar. 31, 2023	$ 17,347	477	138	30,571	(1,148)	(18,678)	5,987
Statement [Roll Forward]
Dividends paid	$ 1.04
Beginning balance at Dec. 31, 2022			112	30,076	(1,255)	(18,683)	5,987
Statement [Roll Forward]
Stock plans			26
Net earnings common stockholders	$ 792			792
Dividends paid (per share: $0.52, $0.515, $1.04 and $1.03 respectively)				(297)
Foreign currency translation	110				111
Pension and postretirement	17				(17)
Cash flow hedges	13				13
Purchases						0
Issued under stock plans						5
Net earnings							(22)
Stock compensation							23
Other comprehensive income	106						(1)
Ending balance at Mar. 31, 2023	$ 17,347	$ 477	$ 138	$ 30,571	$ (1,148)	$ (18,678)	$ 5,987
Statement [Roll Forward]
Dividends paid	$ 0.52
Common stockholders' equity	$ 11,360