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Equity (Dividends per Share) (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Common stock |  |  |
Class of Stock [Line Items] |  |  |
Common stock, dividends (in USD per share) | $ 5.75 | $ 4.80 | $ 4.60
Series B Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 1.80 | 1.80 | 1.80
Series O Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 4,881 | 7,722 | 6,750
Series P Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 6,181 | 6,125 | 6,125
Series Q Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) |  |  | 4,031
Series R Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 4,850 | 4,850 | 4,850
Series S Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 5,000 | 5,000 | 5,000
Series T Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 3,400 | 869 |
Series U Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | 3,317 |  |
Series V Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Preferred Stock, Dividends (in USD per share) | $ 1,998 |  |

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