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v3.25.0.1

Earnings per Share and Stock Repurchase Program (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 USD ($) $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Jul. 31, 2023 USD ($) | Feb. 06, 2019 USD ($)
Common Stock |  |  |  |  |
Common Stock conversion ratio, at the option of the holder | 1 |  |  |  |
Net (loss) income |  |  |  |  |
Net income | $ | $ 291.2 | $ 262.1 | $ 251.5 |  |
Shares |  |  |  |  |
Shares (in shares) | shares | 33,500,000 | 33,400,000 | 33,500,000 |  |
Per Share Amount |  |  |  |  |
Net income (in dollars per share) | $ / shares | $ 8.7 | $ 7.85 | $ 7.51 |  |
Dilutive securities, principally common stock options |  |  |  |  |
Common stock equivalents (in shares) | shares |  | 100,000 | 100,000 |  |
Common stock equivalents (in dollars per share) | $ / shares | $ (0.01) | $ (0.03) | $ (0.03) |  |
Net (loss) income |  |  |  |  |
Net income | $ | $ 291.2 | $ 262.1 | $ 251.5 |  |
Weighted average number of shares: |  |  |  |  |
Shares (in shares) | shares | 33,500,000 | 33,500,000 | 33,600,000 |  |
Securities not included in the computation of diluted EPS |  |  |  |  |
Net income (in dollars per share) | $ / shares | $ 8.69 | $ 7.82 | $ 7.48 |  |
Shares repurchased |  |  |  |  |
Number of shares repurchased | shares | 85,435 | 91,622 | 493,733 |  |
Cost of shares repurchased | $ | $ 17.0 | $ 16.0 | $ 69.4 |  |
Class A |  |  |  |  |
Common Stock |  |  |  |  |
Common Stock, votes per share | 1 | 1 |  |  |
Shares of Common Stock reserved for issuance under stock-based compensation plans | shares | 1,775,014 |  |  |  |
Shares repurchased |  |  |  |  |
Value of shares of the entity's Class A common stock authorized to be repurchased | $ |  |  |  | $ 150.0 | $ 150.0
Class B |  |  |  |  |
Common Stock |  |  |  |  |
Common Stock, votes per share | 10 | 10 |  |  |
Shares of Common Stock reserved for conversion | shares | 5,953,290 |  |  |  |
2019 stock repurchase program | Class A |  |  |  |  |
Shares repurchased |  |  |  |  |
Value of shares of the entity's Class A common stock authorized to be repurchased | $ | $ 150.0 |  |  |  |
2023 repurchase program | Class A |  |  |  |  |
Shares repurchased |  |  |  |  |
Remaining authorized repurchase amount | $ | $ 144.9 |  |  |  |

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