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Other Assets - Summary (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Other Assets [Abstract] |  |  |
Goodwill | $ 3,851 | $ 3,786 | $ 3,804
Other intangible assets, at amortized cost | 98 | 146 |
Other | 15,165 | 13,757 |
Total | $ 19,114 | $ 17,689 |

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