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, 2020	$ 50,328	$ 50,321	$ 4	$ 28,975	$ (861)	$ 28,575	$ (6,372)	$ 7
Changes in Total Equity [Roll Forward]
Effect of issuing stock for employee benefit plans	192	192		279			(87)
Other comprehensive income (loss)	(370)	(370)			(370)
Net income	1,166	1,161				1,161		5
Common dividends declared	(347)	(347)				(347)
Repurchase of common stock	(2,808)	(2,808)					(2,808)
Other transactions impacting noncontrolling interests	(6)							(6)
Balance at Mar. 31, 2021	48,155	48,149	4	29,254	(1,231)	29,389	(9,267)	6
Balance at Dec. 31, 2020	58
Change in Redeemable Noncontrolling Interests
Other comprehensive (loss)	(4)
Net income	5
Other transactions impacting noncontrolling interests	0
Balance at Mar. 31, 2021	59
Balance at Dec. 31, 2021	47,130	47,112	4	29,574	(884)	32,593	(14,175)	18
Changes in Total Equity [Roll Forward]
Effect of issuing stock for employee benefit plans	90	90		162			(72)
Other comprehensive income (loss)	(608)	(608)			(608)
Net income	1,195	1,183				1,183		12
Common dividends declared	(356)	(356)				(356)
Repurchase of common stock	(1,334)	(1,334)					(1,334)
Other transactions impacting noncontrolling interests	(8)	0		0				(8)
Balance at Mar. 31, 2022	46,109	$ 46,087	$ 4	$ 29,736	$ (1,492)	$ 33,420	$ (15,581)	$ 22
Balance at Dec. 31, 2021	54
Change in Redeemable Noncontrolling Interests
Other comprehensive (loss)	(2)
Net income	3
Other transactions impacting noncontrolling interests	0
Balance at Mar. 31, 2022	$ 55