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v3.25.2

Stock-Based Compensation Plans (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Jan. 01, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock available under stock option plan (in shares) | 5,350,333 |  | 5,350,333 |  |  |
Vesting period |  |  | 3 years |  |  |
Options, outstanding, number (in shares) | 114,943 |  | 114,943 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price | $ 48.63 |  | $ 48.63 |  |  |
Options, grants in period, gross (in shares) |  |  | 0 |  |  |
Plan 2020 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares authorized to issue under share based compensation plans (in shares) |  |  |  |  |  | 12,500,000
Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |
Share-based compensation arrangement age requirement to vest over original vesting period |  |  | 55 years |  |  |
Time in service requirement to vest over original vesting period |  |  | 10 years |  |  |
Nonvested awards, compensation cost not yet recognized | $ 39.8 |  | $ 39.8 |  | $ 19.2 |
Nonvested awards, compensation cost not yet recognized, period for recognition |  |  | 2 years |  |  |
Equity instruments other than options, vested in period, fair value | 2.0 | $ 2.3 | $ 25.6 | $ 28.0 |  |
Allocated share-based compensation expense, net of tax | 10.1 | 8.7 | 18.8 | 17.4 |  |
Allocated share-based compensation expense | $ 7.8 | $ 6.8 | $ 14.5 | $ 13.5 |  |
Equity instruments other than options, nonvested, number (in shares) | 1,626,786 |  | 1,626,786 |  | 1,666,683 |
Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  | 3 years |  |  |
Nonvested awards, compensation cost not yet recognized, period for recognition |  |  | 36 months |  |  |
Equity instruments other than options, nonvested, number (in shares) | 519,000 |  | 519,000 |  |  |
Total shareholder return performance measure, as a percentage | 15.00% |  | 15.00% |  |  |
Estimated vesting of shares based on performance shares (in shares) | 583,000 |  | 583,000 |  |  |
Minimum | Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options, vested and expected to vest, exercisable, number (in shares) | 0 |  | 0 |  |  |
Maximum | Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options, vested and expected to vest, exercisable, number (in shares) | 1,193,000 |  | 1,193,000 |  |  |
Maximum | Performance Shares | Issue Date 2022 And 2021 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Award vesting rights, percentage |  |  | 230.00% |  |  |

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