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Shareholders' Equity (Narrative) (Details) |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Feb. 04, 2023 $ / shares | Feb. 03, 2023 $ / shares | Sep. 30, 2023 USD ($) $ / shares | Sep. 30, 2022 USD ($) $ / shares | Sep. 30, 2023 USD ($) board_member dividend $ / shares | Sep. 30, 2022 USD ($) $ / shares
Stockholders' Equity Note [Abstract] |  |  |  |  |  |
Number of quarterly dividends in arrearage before preferred shareholders can elect additional board members | dividend |  |  |  |  | 6 |
Number of additional board members the preferred shareholders can elect in the case of an excess arrearage of quarterly dividends | board_member |  |  |  |  | 2 |
Amount of preferred dividends in arrears | $ |  |  |  |  | $ 0 |
Affirmative vote of outstanding shares of a series of Preferred Shares required for any material and adverse amendment to the terms of series, percent |  |  |  |  | 66.67% |
Affirmative vote of outstanding shares of all Preferred Shares, voting as a single class, required to issue shares ranking senior to Preferred Shares, percent |  |  |  |  | 66.67% |
Redemption price per share (in USD per share) |  |  | $ 25.00 |  | $ 25.00 |
Increase in regular common dividend | 50.00% |  |  |  |  |
Common stock, quarterly dividends (in USD per share) | $ 3.00 | $ 2.00 |  |  |  |
Common stock, annual dividends (in USD per share) | $ 12.00 | $ 8.00 |  |  |  |
Common stock dividends paid in aggregate | $ |  |  | $ 527,600,000 | $ 2,700,000,000 | $ 1,600,000,000 | $ 3,400,000,000
Distributions to common shareholders and restricted share unitholders (in USD per share) |  |  | $ 3.00 | $ 15.15 | $ 9.00 | $ 19.15
Preferred share dividends | $ |  |  | $ 48,700,000 | $ 48,700,000 | $ 146,000,000 | $ 145,700,000

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