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, 2020			$ 470	$ 24,955	$ (1,577)	$ (15,920)	$ 42
Statement [Roll Forward]
Stock plans			41
Net earnings common stockholders	$ 1,006			1,006
Dividends paid				(606)			(5)
Stockholders' Equity, Other				(1)
Foreign currency translation	168				169
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	54				(54)
Cash flow hedges	32				32
Purchases						(82)
Issued under stock plans						112
Net earnings							14
Other comprehensive income	254						(1)
Ending balance at Mar. 31, 2021	9,180	$ 477	511	25,354	(1,322)	(15,890)	50
Beginning balance at Dec. 31, 2020			499	25,096	(1,330)	(15,847)	44
Statement [Roll Forward]
Stock plans			12
Net earnings common stockholders	561			561
Dividends paid				(303)			0
Stockholders' Equity, Other				0
Foreign currency translation	(21)				(20)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	27				(27)
Cash flow hedges	1				1
Purchases						(69)
Issued under stock plans						26
Net earnings							7
Other comprehensive income	7						(1)
Ending balance at Mar. 31, 2021	9,180	477	511	25,354	(1,322)	(15,890)	50
Statement [Roll Forward]
Common stockholders' equity	9,130
Common stockholders' equity	9,883
Beginning balance at Sep. 30, 2021	9,923		522	26,047	(872)	(16,291)	40
Statement [Roll Forward]
Stock plans			57
Net earnings common stockholders	1,570			1,570
Dividends paid				(614)			0
Stockholders' Equity, Other				0
Foreign currency translation	(132)				(131)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	36				(36)
Cash flow hedges	10				10
Purchases						(285)
Issued under stock plans						49
Net earnings							0
Other comprehensive income	(86)						(1)
Ending balance at Mar. 31, 2022	10,614	477	579	27,003	(957)	(16,527)	39
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				(307)			0
Stockholders' Equity, Other				0
Foreign currency translation	(60)				(59)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	18				(18)
Cash flow hedges	6				6
Purchases						(27)
Issued under stock plans						6
Net earnings							1
Other comprehensive income	(36)						(1)
Ending balance at Mar. 31, 2022	10,614	$ 477	$ 579	$ 27,003	$ (957)	$ (16,527)	$ 39
Statement [Roll Forward]
Common stockholders' equity	$ 10,575