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Earnings Per Common Share | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Earnings Per Common Share | Earnings Per Common Share Diluted earnings per common share (“EPS”) attributable to IDEX is computed by dividing Net income attributable to IDEX by the weighted average number of common shares outstanding (basic) plus common stock equivalents outstanding (diluted) for the period. Common stock equivalents consist of restricted stock, performance share units and stock options, which have been included in the calculation of weighted average common shares outstanding using the treasury stock method. ASC 260, Earnings Per Share (“ASC 260”), concludes that all outstanding unvested share-based payment awards that contain rights to non-forfeitable dividends participate in undistributed earnings with common shareholders. If awards are considered participating securities, the Company is required to apply the two-class method of computing basic and diluted earnings per share. The Company has both participating and non-participating securities. Dividend rights for restricted stock awards issued under the IDEX Corporation 2024 Incentive Award Plan (the “2024 Incentive Award Plan”) are subject to the same vesting requirements as the underlying restricted stock awards, and therefore, these awards are not considered participating securities. Dividend rights for restricted stock awards issued prior to the adoption of the 2024 Incentive Award Plan are non-forfeitable and not subject to the same vesting requirements as the underlying restricted stock awards. As such, these awards have been determined to be participating securities. Accordingly, Diluted EPS attributable to IDEX was computed using the two-class method prescribed by ASC 260. Basic weighted average common shares outstanding reconciles to diluted weighted average common shares outstanding as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Basic weighted average common shares outstanding | 75.1 |  |  | 75.7 |  |  | 75.4 |  |  | 75.7 |
Dilutive effect of restricted stock, performance share units and stock options | 0.1 |  |  | 0.2 |  |  | 0.1 |  |  | 0.2 |
Diluted weighted average common shares outstanding | 75.2 |  |  | 75.9 |  |  | 75.5 |  |  | 75.9 |
Share-based payment awards of approximately 0.9 million and 0.5 million shares of common stock for the three months ended September 30, 2025 and 2024, respectively, and 0.8 million and 0.5 million shares of common stock for the nine months ended September 30, 2025 and 2024, respectively, were not included in the computation of Diluted EPS attributable to IDEX because the effect of their inclusion would have been antidilutive.

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