Consolidated Statement of Shareholders Investment (Parenthetical) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Common Shares: | |||
| Increase (Decrease) in Shareholders' Investment | |||
| Balance at beginning of period (in shares) | 1,981,156,896 | 1,976,855,085 | 1,971,189,465 |
| Issued under incentive stock programs (in shares) | 4,116,525 | 4,301,811 | 5,665,620 |
| Balance at end of period (in shares) | 1,985,273,421 | 1,981,156,896 | 1,976,855,085 |
| Common Shares Held in Treasury: | |||
| Increase (Decrease) in Shareholders' Investment | |||
| Balance at beginning of period (in shares) | 209,926,622 | 214,351,838 | 215,570,043 |
| Issued under incentive stock programs (in shares) | 5,650,168 | 6,290,757 | 7,796,030 |
| Purchased (in shares) | 16,914,774 | 1,865,541 | 6,577,825 |
| Balance at end of period (in shares) | 221,191,228 | 209,926,622 | 214,351,838 |
| Earnings Employed in the Business: | |||
| Increase (Decrease) in Shareholders' Investment | |||
| Cash dividends declared per common share | $ 1.82 | $ 1.53 | $ 1.32 |