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v3.19.3.a.u2

Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Stock-based compensation expense |  | $ (64.1) | $ (48.6)
Stockholders' Equity Attributable to Parent | $ 2,013.9 | 1,693.9 |
Net income | $ 181.0 | $ 160.2 | $ 106.5
Common stock transactions: |  |  |
Stock options exercised (in shares) | 191,193 |  |
Dividends declared (in usd per share) | $ 1.24 | $ 1.12 | $ 0.96
Common Stock |  |  |
Stock-based compensation expense |  |  | $ 0.0
Stockholders' Equity Attributable to Parent | $ 1,049.3 |  |
Net income | $ 0.0 |  | $ 0.0
Common stock transactions: |  |  |
Common shares purchased and retired | 43,560 | 24,271 | 33,063
Stock issued during period, new issues (in shares) | 4,356,973 | 3,848,929 | 11,267,676
Stock issued during period, RSU (in shares) | 212,587 | 214,892 | 140,246
Stock issued during period, RSU forfeited (in shares) | 46,198 | 43,079 | 53,571
Stock options exercised (in shares) | 143,222 | 161,217 | 218,095
Shares tendered in payment of option price and income tax withholding amounts, shares | 47,971 | 38,450 | 67,792
Retained Earnings [Member] |  |  |
Stock-based compensation expense |  | $ (64.1) | $ (48.6)
Stockholders' Equity Attributable to Parent | $ 181.0 |  |
Net income | 181.0 |  | 106.5
Accumulated Other Comprehensive Income (Loss) |  |  |
Stock-based compensation expense |  | 0.0 | 0.0
Stockholders' Equity Attributable to Parent | 11.0 | (24.6) |
Net income | $ 0.0 |  | $ 0.0
Restricted Stock [Member] |  |  |
Stock-based compensation expense |  | $ 0.0 |

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