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v3.23.3

Shareholders' Equity - Reconciliation of Weighted Average Number of Shares (Detail) - shares shares in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted average number of common shares outstanding (in shares) | 56.6 | 58.8 | 56.8 | 59.4
Director Plan and deferred stock units (in shares) | 0.2 | 0.2 | 0.2 | 0.2
ESOP (in shares) | 0.2 | 0.2 | 0.2 | 0.2
Common shares outstanding - basic (in shares) | 57.0 | 59.2 | 57.2 | 59.8
Common and potential common shares outstanding - diluted (in shares) | 57.8 | 60.0 | 57.9 | 60.6
Restricted stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Dilutive effect of stock (in shares) | 0.4 | 0.4 | 0.4 | 0.4
Stock options award |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Dilutive effect of stock (in shares) | 0.4 | 0.4 | 0.3 | 0.4

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