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Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2018
Condensed Consolidated Statement of Stockholders' Equity |  |  |  |  |  |
Dividends (per share) | $ 0.22 | $ 0.22 | $ 0.21 | $ 0.21 | $ 0.20 |
Retained earnings | $ 498.0 |  |  |  |  | $ 460.0

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