Consolidated Statement of Shareholders Investment (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Treasury (in shares)	221,191,228
End of Year, Treasury (in shares)	248,724,257	221,191,228
Common Shares
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Common (in shares)	1,985,273,421	1,981,156,896	1,976,855,085
Issued under incentive stock programs (in shares)	1,245,857	4,116,525	4,301,811
End of Year, Common (in shares)	1,986,519,278	1,985,273,421	1,981,156,896
Common Shares Held in Treasury
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Treasury (in shares)	221,191,228	209,926,622	214,351,838
Issued under incentive stock programs (in shares)	4,980,202	5,650,168	6,290,757
Purchased (in shares)	32,513,231	16,914,774	1,865,541
End of Year, Treasury (in shares)	248,724,257	221,191,228	209,926,622
Earnings Employed in the Business
Increase (Decrease) in Shareholders' Investment
Cash dividends declared per common share (in dollars per share)	$ 1.92	$ 1.82	$ 1.53