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Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions | Total | Series B Preferred Stock | Series C Preferred Stock | Series D Preferred Stock | Preferred Shares | Common Shares | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings | Retained Earnings Series B Preferred Stock | Retained Earnings Series C Preferred Stock | Retained Earnings Series D Preferred Stock
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2020 | $ 22,984 |  |  |  | $ 0 | $ 161 | $ 11,881 | $ (2,895) | $ 13,837 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 8,060 |  |  |  |  |  |  |  | 8,060 |  |  |
Other comprehensive income (loss) | (50) |  |  |  |  |  |  | (50) |  |  |  |
Preferred shares issued | 1,584 |  |  |  |  |  | 1,584 |  |  |  |  |
Redemption of preferred shares | (1,600) |  |  |  |  |  | (1,584) |  | (16) |  |  |
Repurchase of common shares | (7,598) |  |  |  |  | (9) | (631) |  | (6,958) |  |  |
Other changes, primarily employee plans | 227 |  |  |  |  | 1 | 245 |  | (19) |  |  |
Cash dividends declared preferred |  | $ (27) | $ (23) | $ (21) |  |  |  |  |  | $ (27) | $ (23) | $ (21)
Cash dividends declared common | (1,359) |  |  |  |  |  |  |  | (1,359) |  |  |
Ending Balance at Dec. 31, 2021 | 22,177 |  |  |  | 0 | 153 | 11,495 | (2,945) | 13,474 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 7,514 |  |  |  |  |  |  |  | 7,514 |  |  |
Other comprehensive income (loss) | (265) |  |  |  |  |  |  | (265) |  |  |  |
Repurchase of common shares | (3,332) |  |  |  |  | (4) | (302) |  | (3,026) |  |  |
Other changes, primarily employee plans | 242 |  |  |  |  |  | 300 |  | (58) |  |  |
Cash dividends declared preferred |  |  |  | (57) |  |  |  |  |  |  |  | (57)
Cash dividends declared common | (1,568) |  |  |  |  |  |  |  | (1,568) |  |  |
Ending Balance at Dec. 31, 2022 | 24,711 |  |  |  | 0 | 149 | 11,493 | (3,210) | 16,279 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Net income | 8,374 |  |  |  |  |  |  |  | 8,374 |  |  |
Other comprehensive income (loss) | 138 |  |  |  |  |  |  | 138 |  |  |  |
Repurchase of common shares | (3,519) |  |  |  |  | (4) | (334) |  | (3,181) |  |  |
Other changes, primarily employee plans | 181 |  |  |  |  |  | 213 |  | (32) |  |  |
Cash dividends declared preferred |  |  |  | $ (58) |  |  |  |  |  |  |  | $ (58)
Cash dividends declared common | (1,770) |  |  |  |  |  |  |  | (1,770) |  |  |
Ending Balance at Dec. 31, 2023 | $ 28,057 |  |  |  | $ 0 | $ 145 | $ 11,372 | $ (3,072) | $ 19,612 |  |  |

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