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v3.21.1

Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Millions | Total | Common Stock | Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2019 | $ 3,071.0 | $ 0.9 | $ 524.8 | $ 2,704.8 | $ (159.5)
Beginning Balance (in shares) at Dec. 31, 2019 |  | 94,655 |  |  |
Common stock withheld and retired to cover taxes on vested stock awards | 0.0 | $ 0.0 | 0.0 | 0.0 | 0.0
Common stock withheld and retired to cover taxes on vested stock awards (in shares) |  | (1) |  |  |
Common stock dividends declared | (75.3) | $ 0.0 | 0.0 | (75.3) | 0.0
Share-based compensation | 10.1 | $ 0.0 | 10.1 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | 194 |  |  |
Other | (0.1) | $ 0.0 | 0.0 | (0.1) | 0.0
Comprehensive income | 144.2 | 0.0 | 0.0 | 141.7 | 2.5
Ending Balance at Mar. 31, 2020 | 3,149.9 | $ 0.9 | 534.9 | 2,771.1 | (157.0)
Ending Balance (in shares) at Mar. 31, 2020 |  | 94,848 |  |  |
Beginning Balance at Dec. 31, 2020 | 3,246.3 | $ 0.9 | 554.4 | 2,835.5 | (144.5)
Beginning Balance (in shares) at Dec. 31, 2020 |  | 94,830 |  |  |
Common stock withheld and retired to cover taxes on vested stock awards | (0.1) | $ 0.0 | 0.0 | (0.1) | 0.0
Common stock withheld and retired to cover taxes on vested stock awards (in shares) |  | (1) |  |  |
Common stock dividends declared | (95.5) | $ 0.0 | 0.0 | (95.5) | 0.0
Share-based compensation | 11.7 | $ 0.1 | 11.6 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | 165 |  |  |
Other | (0.1) | $ 0.0 | 0.0 | (0.1) | 0.0
Comprehensive income | 168.9 | 0.0 | 0.0 | 166.5 | 2.4
Ending Balance at Mar. 31, 2021 | $ 3,331.2 | $ 1.0 | $ 566.0 | $ 2,906.3 | $ (142.1)
Ending Balance (in shares) at Mar. 31, 2021 |  | 94,994 |  |  |

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