Condensed Consolidated Statement of Shareholders' Investment - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period			$ 31,301
Net earnings	$ 537	$ 1,006	1,101	$ 1,678
Other comprehensive income (loss)	306	105	(615)	221
Balance at end of period	30,798		30,798
Common Shares:
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period	23,731	23,461	23,853	23,512
Issued under incentive stock programs	66	111	119	187
Share-based compensation	105	106	350	343
Issuance of restricted stock awards	(9)	(13)	(429)	(377)
Balance at end of period	23,893	23,665	23,893	23,665
Common Shares Held in Treasury:
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period	(9,913)	(9,679)	(10,147)	(9,962)
Issuance of restricted stock awards	10	21	263	324
Purchased	(1)	(1)	(20)	(21)
Balance at end of period	(9,904)	(9,659)	(9,904)	(9,659)
Earnings Employed in the Business:
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period	25,786	24,613	25,847	24,560
Impact of adoption of new accounting standards					$ (5)
Net earnings	537	1,006	1,101	1,678
Cash dividends declared on common shares	(640)	(568)	(1,281)	(1,136)
Effect of common and treasury share transactions	(14)	(6)	7	(57)
Balance at end of period	25,669	25,045	25,669	25,045
Accumulated Other Comprehensive Income (Loss):
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period	(9,386)	(7,470)	(8,465)	(7,586)
Other comprehensive income (loss)	306	105	(615)	221
Balance at end of period	(9,080)	(7,365)	(9,080)	(7,365)
Noncontrolling Interests in Subsidiaries:
Increase (Decrease) in Shareholders' Investment
Balance at beginning of period	209	204	213	198
Noncontrolling Interests' share of income, business combinations, net of distributions and share repurchases	11	4	7	10
Balance at end of period	$ 220	$ 208	$ 220	$ 208