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CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions | Total | Common Stock Class A Common Stock | Common Stock Common Stock | Capital in Excess of Par Value | Retained Earnings | Accumulated Other Comprehensive Loss | Foreign currency translation adjustments | Unrealized net gain on cash flow derivative instruments | Change in pension liability | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2021 |  | $ 130.5 | $ 164.7 | $ 545.2 | $ 2,826.6 | $ (331.4) |  |  |  | $ (1,503.4)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock |  | (0.3) | 0.0 | 0.3 |  |  |  |  |  |
Issuance of share units |  |  |  | (6.0) |  |  |  |  |  |
Vesting of share units |  |  |  | (3.0) |  |  |  |  |  | 3.0
Stock based compensation expense |  |  |  | 11.1 |  |  |  |  |  |
Exercises of stock options |  |  |  | 1.3 |  |  |  |  |  | (2.1)
Issuance of share based compensation |  |  |  | 7.0 |  |  |  |  |  |
Stock incentives and directors’ compensation |  |  |  |  |  |  |  |  |  | 0.3
Net Earnings | $ 235.7 |  |  |  | 235.7 |  |  |  |  |
Dividends on stock |  |  |  |  | (177.3) |  |  |  |  |
Change in other comprehensive income (loss), less tax |  |  |  |  |  |  | $ (39.4) | $ 4.3 | $ 284.1 |
Shares repurchased | (403.5) |  |  |  |  |  |  |  |  | (403.5)
Excise tax on repurchases of common stock |  |  |  |  |  |  |  |  |  | 0.0
Balance at end of period at Dec. 31, 2022 | 1,747.7 | 130.2 | 164.7 | 555.9 | 2,885.0 | (82.4) | (84.1) | 4.9 | (3.2) | (1,905.7)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock |  | (0.1) | 0.0 | 0.1 |  |  |  |  |  |
Issuance of share units |  |  |  | (10.3) |  |  |  |  |  |
Vesting of share units |  |  |  | (3.7) |  |  |  |  |  | 3.7
Stock based compensation expense |  |  |  | 10.4 |  |  |  |  |  |
Exercises of stock options |  |  |  | 14.5 |  |  |  |  |  | 8.8
Issuance of share based compensation |  |  |  | 11.3 |  |  |  |  |  |
Stock incentives and directors’ compensation |  |  |  |  |  |  |  |  |  | 0.3
Net Earnings | 556.6 |  |  |  | 556.6 |  |  |  |  |
Dividends on stock |  |  |  |  | (183.5) |  |  |  |  |
Change in other comprehensive income (loss), less tax |  |  |  |  |  |  | 3.8 | (4.2) | (1.4) |
Shares repurchased | (306.5) |  |  |  |  |  |  |  |  | (306.5)
Excise tax on repurchases of common stock |  |  |  |  |  |  |  |  |  | (3.1)
Balance at end of period at Dec. 31, 2023 | 1,844.4 | 130.1 | 164.7 | 578.2 | 3,258.1 | (84.2) | (80.3) | 0.7 | (4.6) | (2,202.5)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |
Conversion of Class A Common Stock |  | 0.0 | 0.0 | 0.0 |  |  |  |  |  |
Issuance of share units |  |  |  | (15.0) |  |  |  |  |  |
Vesting of share units |  |  |  | (2.5) |  |  |  |  |  | 2.5
Stock based compensation expense |  |  |  | 13.1 |  |  |  |  |  |
Exercises of stock options |  |  |  | 11.4 |  |  |  |  |  | 6.6
Issuance of share based compensation |  |  |  | 16.1 |  |  |  |  |  |
Stock incentives and directors’ compensation |  |  |  |  |  |  |  |  |  | 0.2
Net Earnings | 533.6 |  |  |  | 533.6 |  |  |  |  |
Dividends on stock |  |  |  |  | (190.4) |  |  |  |  |
Change in other comprehensive income (loss), less tax |  |  |  |  |  |  | (24.0) | (2.2) | (1.5) |
Shares repurchased | (305.8) |  |  |  |  |  |  |  |  | (305.8)
Excise tax on repurchases of common stock |  |  |  |  |  |  |  |  |  | (3.0)
Balance at end of period at Dec. 31, 2024 | $ 1,883.5 | $ 130.1 | $ 164.7 | $ 601.3 | $ 3,601.3 | $ (111.9) | $ (104.3) | $ (1.5) | $ (6.1) | $ (2,502.0)

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