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Common Shareholders' Equity - Narrative (Details) |  | 1 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 01, 2017 shares | Nov. 30, 2009 shares | Dec. 31, 2019 USD ($) vote director shares | Aug. 02, 2013 USD ($)
Share repurchases |  |  |  |
Repurchase authorization, maximum dollar value | $ |  |  | $ 199,000,000 |
Series A Common Shares |  |  |  |
Common shareholders' equity, other disclosures |  |  |  |
Number of votes | vote |  |  | 10 |
Number of directors entitled to elect shares | director |  |  | 8 |
Common Shares |  |  |  |
Common shareholders' equity, other disclosures |  |  |  |
Number of votes | vote |  |  | 1 |
Number of directors entitled to elect shares | director |  |  | 4 |
Share repurchases |  |  |  |
Repurchase authorization | $ |  |  |  | $ 250,000,000
Common Shares | Share Conversion |  |  |  |
Common shareholders' equity, other disclosures |  |  |  |
Shares reserved (in shares) |  |  | 7,234,000 |
Common Shares | Tax-Deferred Savings Plan |  |  |  |
Common shareholders' equity, other disclosures |  |  |  |
Shares reserved (in shares) |  |  | 90,000 |
U.S. Cellular Common Shares | U.S. Cellular |  |  |  |
Share repurchases |  |  |  |
Repurchase authorization, additional number of shares per year (in shares) |  | 1,300,000 |  |
Repurchase authorization, cumulative shares authorized (in shares) |  |  | 5,311,000 |
U.S. Cellular Common Shares | U.S. Cellular | Maximum |  |  |  |
Share repurchases |  |  |  |
Repurchase authorization, additional number of shares per year (in shares) | 1,300,000 |  |  |
U.S. Cellular Common Shares | U.S. Cellular | Minimum |  |  |  |
Share repurchases |  |  |  |
Repurchase authorization, additional number of shares per year (in shares) | 0 |  |  |

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