v3.24.2
Shareholders' Earnings per Share
6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Shareholders' Earnings per Share Shareholders' Earnings per Share
The denominator for basic and diluted shareholders' earnings per share for the three and six months ended June 30, 2024 and 2023 is as follows:
 Three Months Ended 
 June 30
Six Months Ended 
 June 30
 2024202320242023
Denominator for basic shareholders' earnings per share – weighted-average shares
232.2 236.6 232.4 237.0 
Effect of dilutive securities – employee stock options, nonvested restricted stock awards and convertible debentures
1.2 1.2 1.4 1.7 
Denominator for diluted shareholders' earnings per share
233.4 237.8 233.8 238.7 
During the three months ended June 30, 2024 and 2023, weighted-average shares related to certain stock options of 0.5 and 1.0 respectively, were excluded from the denominator for diluted shareholders' earnings per share because the stock options were anti-dilutive. During the six months ended June 30, 2024 and 2023, weighted-average shares related to certain stock options of 0.6 and 0.7, respectively, were excluded from each of the denominators for diluted earnings per share because the stock options were anti-dilutive.
During the three and six months ended June 30, 2024, we issued approximately 0.0 and 0.6 restricted stock units under our stock incentive plans, 0.0 and 0.3 of which vesting is contingent upon us meeting specified annual earnings targets for the three-year period of 2024 through 2026. During the three and six months ended months ended June 30, 2023, we issued approximately 0.0 and 0.6 restricted stock units under our stock incentive plans, 0.0 and 0.2 of which vesting is contingent upon us meeting specified annual earnings targets for the three-year period of 2023 through 2025. The contingent restricted stock units have been excluded from the denominators for diluted shareholders' earnings per share and will be included only if and when the contingency is met.