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v3.21.2

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 | (10.5) | $ 0.0 | (0.8) | (9.7) | 0.0
Common stock withheld and retired to cover taxes on vested stock awards (in shares) |  | (108) |  |  |
Common stock dividends declared | (225.8) | $ 0.0 | 0.0 | (225.8) | 0.0
Share-based compensation and other | 24.7 | $ 0.0 | 24.7 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | 284 |  |  |
Comprehensive income | 346.0 | $ 0.0 | 0.0 | 337.4 | 8.6
Ending Balance at Sep. 30, 2020 | 3,205.4 | $ 0.9 | 548.7 | 2,806.7 | (150.9)
Ending Balance (in shares) at Sep. 30, 2020 |  | 94,831 |  |  |
Beginning Balance at Jun. 30, 2020 | 3,133.1 | $ 0.9 | 542.7 | 2,742.9 | (153.4)
Beginning Balance (in shares) at Jun. 30, 2020 |  | 94,835 |  |  |
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) |  | (1,000) |  |  |
Common stock dividends declared | (75.2) | $ 0.0 | 0.0 | (75.2) | 0.0
Share-based compensation and other | 6.0 | $ 0.0 | 6.0 | 0.0 | 0.0
Share-based compensation expense (in shares) |  | 3 |  |  |
Comprehensive income | 141.6 | $ 0.0 | 0.0 | 139.1 | 2.5
Ending Balance at Sep. 30, 2020 | 3,205.4 | $ 0.9 | 548.7 | 2,806.7 | (150.9)
Ending Balance (in shares) at Sep. 30, 2020 |  | 94,831 |  |  |
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 | (12.0) | $ (0.1) | (0.7) | (11.2) | 0.0
Common stock withheld and retired to cover taxes on vested stock awards (in shares) |  | (88) |  |  |
Common stock dividends declared | (286.2) | $ 0.0 | 0.0 | (286.2) | 0.0
Share-based compensation and other | 27.9 | $ 0.2 | 27.6 | 0.1 | 0.0
Share-based compensation expense (in shares) |  | 249 |  |  |
Comprehensive income | 632.3 | $ 0.0 | 0.0 | 624.6 | 7.7
Ending Balance at Sep. 30, 2021 | 3,608.3 | $ 1.0 | 581.3 | 3,162.8 | (136.8)
Ending Balance (in shares) at Sep. 30, 2021 |  | 94,991 |  |  |
Beginning Balance at Jun. 30, 2021 | 3,444.3 | $ 1.0 | 574.5 | 3,008.5 | (139.7)
Beginning Balance (in shares) at Jun. 30, 2021 |  | 94,979 |  |  |
Common stock withheld and retired to cover taxes on vested stock awards | (1.4) | $ 0.0 | (0.1) | (1.3) | 0.0
Common stock withheld and retired to cover taxes on vested stock awards (in shares) |  | (10) |  |  |
Common stock dividends declared | (95.3) | $ 0.0 | 0.0 | (95.3) | 0.0
Share-based compensation and other | 7.1 | $ 0.0 | 6.9 | 0.2 | 0.0
Share-based compensation expense (in shares) |  | 22 |  |  |
Comprehensive income | 253.6 | $ 0.0 | 0.0 | 250.7 | 2.9
Ending Balance at Sep. 30, 2021 | $ 3,608.3 | $ 1.0 | $ 581.3 | $ 3,162.8 | $ (136.8)
Ending Balance (in shares) at Sep. 30, 2021 |  | 94,991 |  |  |

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