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Supplemental Share Information (Parenthetical) - shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Increase (decrease) in equity |  |  |
Treasury stock, beginning balance (in shares) | 394,787,951 | 372,187,578 | 366,283,418
Reacquired stock (in shares) | 290,379 | 10,865,635 | 11,834,681
Split-off of Food Safety business (in shares) | 0 | 15,989,536 | 0
Issuances pursuant to stock options and benefit plans (in shares) | (3,626,410) | (4,254,798) | (5,930,521)
Treasury stock, ending balance (in shares) | 391,451,920 | 394,787,951 | 372,187,578

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