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v3.19.1

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions | Total | Common Stock Class A | Common Stock Class B | Additional Paid-In Capital | Retained Earnings
--- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Adjustment to adopt new accounting principles | $ 1.4 |  |  |  | $ 1.4
Balance (in shares) at Dec. 31, 2017 |  | 23.9 | 1.0 |  |
Balance at Dec. 31, 2017 | 1,083.2 | $ 149.1 | $ 0.1 | $ 11.3 | 922.7
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 265.7 |  |  |  | 265.7
Issuance of stock in connection with employee stock plans (in shares) |  | 0.1 |  |  |
Issuance of stock in connection with employee stock plans | 10.1 | $ 10.1 |  |  |
Issuance of restricted stock to employees (in shares) |  | 0.1 |  |  |
Repurchase of Class A common stock (in shares) |  | (2.1) |  |  |
Repurchase of Class A common stock | (148.9) | $ (168.5) |  | 19.6 |
Compensation for stock and stock option issuances and excess tax benefits from option exercises | 13.4 | $ 9.3 |  | 4.1 |
Dividends paid | (27.7) |  |  |  | (27.7)
Balance (in shares) at Dec. 31, 2018 |  | 22.0 | 1.0 |  |
Balance at Dec. 31, 2018 | 1,197.2 | $ 0.0 | $ 0.1 | 35.0 | 1,162.1
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Adjustment to adopt new accounting principles | 0.9 |  |  |  | 0.9
Net income | 56.4 |  |  |  | 56.4
Issuance of stock in connection with employee stock plans (in shares) |  | 0.0 |  |  |
Issuance of stock in connection with employee stock plans | 2.3 | $ 2.3 |  |  |
Issuance of restricted stock to employees (in shares) |  | 0.1 |  |  |
Repurchase of Class A common stock | (3.1) | $ (3.1) |  |  |
Class B common stock converted to Class A common stock (in shares) |  | 0.2 | 0.2 |  |
Class B common stock converted to Class A common stock | 0.0 |  |  |  |
Compensation for stock and stock option issuances and excess tax benefits from option exercises | 3.5 | $ 10.5 |  | (7.0) |
Dividends paid | (6.7) |  |  |  | (6.7)
Balance (in shares) at Mar. 31, 2019 |  | 22.3 | 0.8 |  |
Balance at Mar. 31, 2019 | $ 1,250.5 | $ 9.7 | $ 0.1 | $ 28.0 | $ 1,212.7

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