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Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions | Total | Common Stock | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Adjustments for New Accounting Principle, Early Adoption [Member] | Restricted Stock [Member]
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2016 | $ 982.6 | $ 296.1 | $ 694.7 | $ (8.2) |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income | 106.5 | 0.0 | 106.5 | 0.0 |  |
Other comprehensive loss, net of tax | (3.8) | $ 0.0 | 0.0 | (3.8) |  |
Stock Repurchased and Retired During Period, Shares |  | 33,063 |  |  |  |
Common stock transactions: |  |  |  |  |  |
Common shares purchased and retired | (1.3) | $ (1.3) | 0.0 | 0.0 |  |
Stock Issued During Period, Value, New Issues | 386.0 | 386.0 | 0.0 | 0.0 |  |
Non-vested common shares forfeited or canceled | 0.0 |  | 0.0 |  |  |
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense) | 2.4 | 2.4 | 0.0 | 0.0 |  |
Stock compensation expense | 3.8 | 3.8 | 0.0 | 0.0 |  | $ 3.3
Stock-based compensation expense | (48.6) | 0.0 | (48.6) | 0.0 |  |
Cash dividends declared: |  |  |  |  |  |
Common (per share) | (1,427.6) | (687.0) | (752.6) | (12.0) |  |
Common Stock, Value, Issued | 0.0 | 0.0 | 0.0 | 0.0 |  |
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | 0.0 |  | 3.1 | (3.1) |  |
Net income | 160.2 |  |  |  |  |
Other comprehensive loss, net of tax | (9.5) | $ 0.0 | 0.0 | (9.5) |  |
Stock Repurchased and Retired During Period, Shares |  | 24,271 |  |  |  |
Common shares purchased and retired | (1.0) | $ (1.0) | 0.0 | 0.0 |  |
Stock Issued During Period, Value, New Issues | 173.3 | 173.3 | 0.0 | 0.0 |  |
Non-vested common shares forfeited or canceled | 0.0 | 0.0 | 0.0 | 0.0 |  |
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense) | 1.8 |  |  |  |  |
Stock compensation expense | 5.6 | 5.6 | 0.0 | 0.0 |  | 5.6
Stock-based compensation expense | (64.1) |  | (64.1) | 0.0 |  | $ 0.0
Common (per share) | (1,693.9) | (866.7) | (851.8) | (24.6) |  |
Ending Balance at Dec. 31, 2018 | 1,693.9 |  |  | (24.6) |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (24.6) |  |  |  |  |
Common stock transactions: |  |  |  |  |  |
Common Stock, Value, Issued | 0.0 | 0.0 | 0.0 | 0.0 |  |
Net income | 181.0 | 0.0 | 181.0 | 0.0 |  |
Other comprehensive loss, net of tax | 35.6 | $ 0.0 |  | 35.6 |  |
Other comprehensive loss, net of tax | Accounting Standards Update 2018-02 [Member] |  |  |  |  | $ 0.0 |
Stock Repurchased and Retired During Period, Shares |  | 43,560 |  |  |  |
Common shares purchased and retired | (2.5) | $ (2.5) | 0.0 | 0.0 |  |
Stock Issued During Period, Value, New Issues | 176.1 | 176.1 | 0.0 | 0.0 |  |
Non-vested common shares issued | 0.0 |  |  |  |  |
Non-vested common shares forfeited or canceled | 0.0 |  |  | 0.0 |  |
Stock Issued, Value, Stock Options Exercised, Net of Tax Benefit (Expense) | 1.0 | 1.0 | 0.0 | 0.0 |  |
Stock compensation expense | 8.0 | 8.0 | 0.0 | 0.0 |  |
Cash dividends declared: |  |  |  |  |  |
Common (per share) | (79.2) | 0.0 | (79.2) | 0.0 |  |
Ending Balance at Dec. 31, 2019 | 2,013.9 | 1,049.3 | 181.0 | 11.0 |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | 11.0 |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | 2,013.9 |  | $ 953.6 |  |  |
Common stock transactions: |  |  |  |  |  |
Common Stock, Value, Issued | $ 0.0 | $ 0.0 |  | $ 0.0 |  |

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- Details
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