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Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Aug. 31, 2023 | Jul. 31, 2014 | Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Remaining authorized repurchase amount |  |  |  | $ 100.0 | $ 100.0 |  |
Accrued excise tax |  |  |  | $ 1.0 | $ 1.0 |  |
Repurchase of common stock for employee tax withholdings, shares |  |  |  |  | 182,000 | 138,000 | 130,000
Repurchase of common stock for tax withholdings, value |  |  |  |  | $ 10.2 | $ 8.7 | $ 6.3
Cash dividends declared per common share |  |  |  |  | $ 1.12 | $ 1.06 | $ 1
Cash dividend |  |  |  |  | $ 34.3 | $ 33.7 | $ 32.7
Stock warrants term |  |  | 10 years |  |  |  |
Stock warrants, exercise price |  |  | $ 26.68 |  |  |  |
Conversion Of Comcast Current Residential Customer Accounts |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Issuance of stock warrants |  |  | 1,900,000 |  |  |  |
Comcast |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Issuance of stock warrants |  |  | 2,900,000 |  |  |  |
Stock warrants issued |  |  |  | 1,000,000 | 1,000,000 |  |
Stock warrants vested |  |  |  |  | 0 |  |
Beneficial ownership required for potential cash settlement |  |  |  | 19.99% | 19.99% |  |
SEC Rule 10b5-1 Plan |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Repurchase of common stock, shares |  | 275,000 |  |  | 2,188,000 | 1,497,000 | 733,000
Total amount paid |  | $ 15.0 |  |  | $ 117.1 | $ 87.9 | $ 36.0
Weighted-average price per share |  | $ 54.65 |  |  | $ 53.51 | $ 58.71 | $ 49.13
2023 Convertible Notes |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Repurchase of common stock, shares | 1,680,000 |  |  |  |  |  |
Total amount paid | $ 90.1 |  |  |  |  |  |
Weighted-average price per share | $ 53.62 |  |  |  |  |  |
Second SEC Rule 10b5-1 Plan |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Remaining authorized repurchase amount | $ 100.0 |  |  |  |  |  |
Repurchase of common stock, shares |  |  |  | 233,000 |  |  |
Total amount paid |  |  |  | $ 12.0 |  |  |
Weighted-average price per share | $ 51.33 |  |  |  |  |  |
Stock Repurchase Program |  |  |  |  |  |  |
Stockholders Equity Transaction [Line Items] |  |  |  |  |  |  |
Remaining authorized repurchase amount |  |  |  | $ 95.8 | $ 95.8 |  |

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