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Stockholders' Equity - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Cash dividends declared per share (in USD per share) | $ 0.35 | $ 0.35 |  | $ 0.33 | $ 0.33 |  | $ 2.65 | $ 1.89
Amount Declared | $ 9.8 | $ 9.8 |  | $ 9.4 | $ 9.4 |  | $ 75.1 | $ 53.7
Amount Paid | $ 9.8 | $ 9.8 |  | $ 9.3 | $ 9.3 |  | $ 75.0 | $ 53.8
O 2024 Q1 A Dividends |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Cash dividends declared per share (in USD per share) |  |  | $ 1.60 |  |  |  |  |
Amount Declared |  |  | $ 45.5 |  |  |  |  |
Amount Paid |  |  | $ 45.1 |  |  |  |  |
O 2024 Q1 B Dividends |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Cash dividends declared per share (in USD per share) |  |  | $ 0.35 |  |  |  |  |
Amount Declared |  |  | $ 10.0 |  |  |  |  |
Amount Paid |  |  | $ 9.8 |  |  |  |  |
O 2023 Q1 A Dividends |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Cash dividends declared per share (in USD per share) |  |  |  |  |  | $ 0.90 |  |
Amount Declared |  |  |  |  |  | $ 25.5 |  |
Amount Paid |  |  |  |  |  | $ 25.3 |  |
O 2023 Q1 B Dividends |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Cash dividends declared per share (in USD per share) |  |  |  |  |  | $ 0.33 |  |
Amount Declared |  |  |  |  |  | $ 9.4 |  |
Amount Paid |  |  |  |  |  | $ 9.2 |  |

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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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