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v3.20.2

Changes in Capital Structure - Dividends (Details) - $ / shares |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 15, 2020 | Dec. 01, 2020 | Oct. 27, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, authorized (in shares) |  |  |  | 10,000,000 |  |  |  | 10,000,000 |  | 10,000,000
Par value - preferred stock (in usd per share) |  |  |  | $ 0.01 |  |  |  | $ 0.01 |  | $ 0.01
Subsequent Event |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, dividends, per share, declared (in dollars per share) |  |  | $ 0.318 |  |  |  |  |  |  |
Dividends payable, date to be paid | Dec. 15, 2020 |  |  |  |  |  |  |  |  |
Dividends payable, date of record |  | Dec. 01, 2020 |  |  |  |  |  |  |  |
Common Class A |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, dividends, per share, cash paid (in dollars per share) |  |  |  | 0.3125 | $ 0.2100 | $ 0.2100 | $ 0.20 | 0.7325 | $ 0.60 |
Common Class C |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, dividends, per share, cash paid (in dollars per share) |  |  |  | $ 0.3125 | $ 0.2100 | $ 0.2100 | $ 0.20 | $ 0.7325 | $ 0.60 |

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