Consolidated Statement of Shareholders' Investment (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Treasury (in shares)	248,724,257
End of Year, Treasury (in shares)	253,807,494	248,724,257
Common Shares
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Common (in shares)	1,986,519,278	1,985,273,421	1,981,156,896
Issued under incentive stock programs (in shares)	1,364,574	1,245,857	4,116,525
End of Year, Common (in shares)	1,987,883,852	1,986,519,278	1,985,273,421
Common Shares Held in Treasury
Increase (Decrease) in Shareholders' Investment
Beginning of Year, Treasury (in shares)	248,724,257	221,191,228	209,926,622
Issued under incentive stock programs (in shares)	4,881,031	4,980,202	5,650,168
Purchased (in shares)	9,964,268	32,513,231	16,914,774
End of Year, Treasury (in shares)	253,807,494	248,724,257	221,191,228
Earnings Employed in the Business
Increase (Decrease) in Shareholders' Investment
Cash dividends declared per common share (in dollars per share)	$ 2.08	$ 1.92	$ 1.82