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Shareholders' Equity (Narrative) (Details) |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 04, 2022 $ / shares | Jan. 13, 2022 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) $ / shares | Sep. 30, 2021 USD ($) $ / shares | Sep. 30, 2022 USD ($) dividend board_member $ / shares | Sep. 30, 2021 USD ($) $ / shares | Dec. 31, 2021 USD ($)
Class of Stock [Line Items] |  |  |  |  |  |  |
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) | $ / shares |  |  | $ 25.00 |  | $ 25.00 |  |
Liquidation Preference |  |  | $ 4,350,000,000 |  | $ 4,350,000,000 |  | $ 4,100,000,000
Common stock dividends paid in aggregate |  |  | $ 2,700,000,000 | $ 351,200,000 | $ 3,400,000,000 | $ 1,050,000,000.00 |
Distributions to common shareholders and restricted share unitholders (in USD per share) | $ / shares |  |  | $ 15.15 | $ 2.00 | $ 19.15 | $ 6.00 |
Preferred share dividends |  |  | $ 48,678,000 | $ 46,237,000 | $ 145,716,000 | $ 138,500,000 |
Special Dividend |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Common stock dividends paid in aggregate |  |  | 2,300,000,000 |  | $ 2,300,000,000 |  |
Common stock, dividends, per share, cash paid (in USD per share) | $ / shares | $ 13.15 |  |  |  |  |  |
Series S Preferred Stock |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Stock issued during period (in shares) | shares |  | 10,000,000 |  |  |  |  |
Preferred shares per depositary share (in shares) | shares |  | 0.001 |  |  |  |  |
Dividend rate percentage |  | 4.10% |  |  | 4.10% |  |
Shares issued (in USD per share) | $ / shares |  | $ 25.00 |  |  |  |  |
Liquidation Preference |  | $ 250,000,000 | $ 250,000,000 |  | $ 250,000,000 |  | $ 0
Issuance costs |  | $ 7,200,000 |  |  |  |  |

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