Consolidated Statements of Changes in Total Equity - USD ($) $ in Millions		Total	Shareholders' Equity	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss)	Retained Earnings	Treasury Stock	Other Non- controlling Interests
Balance at Dec. 31, 2021	[1]	$ 46,976	$ 46,958	$ 4	$ 29,574	$ (1,068)	$ 32,623	$ (14,175)	$ 18
Changes in Total Equity
Effect of issuing stock for employee benefit plans	[1]	446	446		521			(75)
Other comprehensive income (loss)	[1]	(1,260)	(1,260)			(1,260)
Net income	[1]	5,552	5,511				5,511		41
Common dividends declared	[1]	(1,051)	(1,051)				(1,051)
Repurchase of common stock	[1]	(5,840)	(5,840)		(700)			(5,140)
Other transactions impacting noncontrolling interests	[1]	(17)	0		0				(17)
Balance at Sep. 30, 2022	[1]	44,806	44,764	4	29,395	(2,328)	37,083	(19,390)	42
Balance at Dec. 31, 2021	[1]	54
Change in Redeemable Noncontrolling Interests
Other comprehensive loss	[1]	(2)
Net income	[1]	8
Other transactions impacting noncontrolling interests	[1]	(10)
Balance at Sep. 30, 2022	[1]	50
Balance at Jun. 30, 2022	[1]	45,701	45,671	4	29,930	(2,343)	34,668	(16,588)	30
Changes in Total Equity
Effect of issuing stock for employee benefit plans	[1]	163	163		165			(2)
Other comprehensive income (loss)	[1]	15	15			15
Net income	[1]	2,775	2,757				2,757		18
Common dividends declared	[1]	(342)	(342)				(342)
Repurchase of common stock	[1]	(3,500)	(3,500)		(700)			(2,800)
Other transactions impacting noncontrolling interests	[1]	(6)	0		0				(6)
Balance at Sep. 30, 2022	[1]	44,806	44,764	4	29,395	(2,328)	37,083	(19,390)	42
Balance at Jun. 30, 2022	[1]	45
Change in Redeemable Noncontrolling Interests
Other comprehensive loss	[1]	1
Net income	[1]	3
Other transactions impacting noncontrolling interests	[1]	1
Balance at Sep. 30, 2022	[1]	50
Balance at Dec. 31, 2022	[1]	44,688	44,675	4	30,233	(1,658)	37,940	(21,844)	13
Changes in Total Equity
Effect of issuing stock for employee benefit plans		222	222		332			(110)
Other comprehensive income (loss)		(461)	(461)			(461)
Net income		4,149	4,135				4,135		14
Common dividends declared		(1,093)	(1,093)				(1,093)
Repurchase of common stock		(1,785)	(1,785)		0			(1,785)
Other transactions impacting noncontrolling interests		(18)	(2)		(2)				(16)
Balance at Sep. 30, 2023		45,702	45,691	4	30,563	(2,119)	40,982	(23,739)	11
Balance at Dec. 31, 2022	[1]	66
Change in Redeemable Noncontrolling Interests
Other comprehensive loss		0
Net income		116
Other transactions impacting noncontrolling interests		(118)
Balance at Sep. 30, 2023		64
Balance at Jun. 30, 2023		45,464	45,445	4	30,436	(1,878)	39,936	(23,053)	19
Changes in Total Equity
Effect of issuing stock for employee benefit plans		122	122		127			(5)
Other comprehensive income (loss)		(241)	(241)			(241)
Net income		1,412	1,408				1,408		4
Common dividends declared		(362)	(362)				(362)
Repurchase of common stock		(681)	(681)		0			(681)
Other transactions impacting noncontrolling interests		(12)	0		0				(12)
Balance at Sep. 30, 2023		45,702	$ 45,691	$ 4	$ 30,563	$ (2,119)	$ 40,982	$ (23,739)	$ 11
Balance at Jun. 30, 2023		62
Change in Redeemable Noncontrolling Interests
Other comprehensive loss		0
Net income		37
Other transactions impacting noncontrolling interests		(35)
Balance at Sep. 30, 2023		$ 64

[1] Amounts have been restated to reflect the adoption of Targeted Improvements to the Accounting for Long-Duration Contracts in 2023. See Note 2 to the Consolidated Financial Statements for further information.