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v3.23.3

Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Capital in Excess of Par Value | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Stock, Common
--- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2021 | $ 1,953.3 |  | $ 0.5 | $ 1,692.6 | $ 279.5 | $ (19.3) | $ 0.0
Beginning balance, shares at Dec. 31, 2021 |  |  | 48.3 |  |  |  | 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 91.2 |  |  |  | 91.2 |  |
Other comprehensive income (loss) | 3.5 |  |  |  |  | 3.5 |
Dividends paid to common stockholders | (7.4) |  |  |  | (7.4) |  |
Restricted shares, net - shares |  |  | 0.6 |  |  |  | (0.2)
Restricted shares, net - value | 5.7 |  |  | 16.0 |  |  | $ (10.3)
Shares repurchased, shares |  |  |  |  |  |  | (0.3)
Shares repurchased | (15.0) |  |  |  |  |  | $ (15.0)
Ending balance at Sep. 30, 2022 | 2,031.3 |  | $ 0.5 | 1,708.6 | 363.3 | (15.8) | $ (25.3)
Ending balance, shares at Sep. 30, 2022 |  |  | 48.9 |  |  |  | 0.5
Beginning balance at Jun. 30, 2022 | 1,996.0 |  | $ 0.5 | 1,703.1 | 333.7 | (16.3) | $ (25.0)
Beginning balance, shares at Jun. 30, 2022 |  |  | 48.9 |  |  |  | 0.5
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 32.0 |  |  |  | 32.0 |  |
Other comprehensive income (loss) | 0.5 |  |  |  |  | 0.5 |
Dividends paid to common stockholders | (2.4) |  |  |  | (2.4) |  |
Restricted shares, net - shares |  |  | 0.0 |  |  |  | 0.0
Restricted shares, net - value | 5.2 |  |  | 5.5 |  |  | $ (0.3)
Ending balance at Sep. 30, 2022 | 2,031.3 |  | $ 0.5 | 1,708.6 | 363.3 | (15.8) | $ (25.3)
Ending balance, shares at Sep. 30, 2022 |  |  | 48.9 |  |  |  | 0.5
Beginning balance at Dec. 31, 2022 | 2,184.4 |  | $ 0.5 | 1,684.1 | 515.5 | (15.7) | $ 0.0
Beginning balance, shares at Dec. 31, 2022 |  |  | 48.4 |  |  |  | 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 132.1 |  |  |  | 132.1 |  |
Other comprehensive income (loss) | (1.1) |  |  |  |  | (1.1) |
Dividends paid to common stockholders | (7.3) |  |  |  | (7.3) |  |
Restricted shares, net - shares |  |  | 0.5 |  |  |  | (0.1)
Restricted shares, net - value | 7.2 |  |  | 19.0 |  |  | $ (11.8)
Retirement of treasury stock - shares |  |  | 0.1 |  |  |  | 0.1
Retirement of treasury stock - value | 0.0 |  |  | 11.6 |  |  | $ 11.6
Ending balance at Sep. 30, 2023 | 2,315.3 | [1] | $ 0.5 | 1,691.5 | 640.3 | (16.8) | $ (0.2)
Ending balance, shares at Sep. 30, 2023 |  |  | 48.8 |  |  |  | 0.0
Beginning balance at Jun. 30, 2023 | 2,277.3 |  | $ 0.5 | 1,685.6 | 607.3 | (16.1) | $ 0.0
Beginning balance, shares at Jun. 30, 2023 |  |  | 48.8 |  |  |  | 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 35.5 |  |  |  | 35.5 |  |
Other comprehensive income (loss) | (0.7) |  |  |  |  | (0.7) |
Dividends paid to common stockholders | (2.5) |  |  |  | (2.5) |  |
Restricted shares, net - shares |  |  | 0.0 |  |  |  | 0.0
Restricted shares, net - value | 5.7 |  |  | 5.9 |  |  | $ (0.2)
Ending balance at Sep. 30, 2023 | $ 2,315.3 | [1] | $ 0.5 | $ 1,691.5 | $ 640.3 | $ (16.8) | $ (0.2)
Ending balance, shares at Sep. 30, 2023 |  |  | 48.8 |  |  |  | 0.0
Statement of Stockholders' Equity [Abstract] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ 0.01 |  |  |  |  |  |
[1] | (unaudited)

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