Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Cumulative effect, period of adoption, adjustment	Common stock and capital in excess of par value	Accumulated other comprehensive income	Accumulated other comprehensive income Cumulative effect, period of adoption, adjustment	Retained earnings	Retained earnings Cumulative effect, period of adoption, adjustment	Treasury Stock	Noncontrolling interests
Beginning Balance at Dec. 31, 2017	$ 351,954	$ (70)	$ 35,702	$ 58,571	$ (61,375)	$ 255,786	$ 61,305	$ (1,763)	$ 3,658
Net earnings	4,322					4,021			301
Other comprehensive income, net	(2,263)			(2,211)					(52)
Issuance (acquisition) of common stock	(1,287)		59					(1,346)
Transactions with noncontrolling interests	(156)		(46)						(110)
Ending Balance at Dec. 31, 2018	352,500		35,715	(5,015)		321,112		(3,109)	3,797
Net earnings	81,792					81,417			375
Other comprehensive income, net	(198)			(228)					30
Issuance (acquisition) of common stock	(4,995)		21					(5,016)
Transactions with noncontrolling interests	(536)		(70)			(36)			(430)
Ending Balance at Dec. 31, 2019	428,563	$ (388)	35,666	(5,243)		402,493	$ (388)	(8,125)	3,772
Net earnings	43,253					42,521			732
Other comprehensive income, net	1,019			1,000					19
Issuance (acquisition) of common stock	(24,728)							(24,728)
Transactions with noncontrolling interests	3,617		(32)						3,649
Ending Balance at Dec. 31, 2020	$ 451,336		$ 35,634	$ (4,243)		$ 444,626		$ (32,853)	$ 8,172