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Dispositions and Held for Sale (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Feb. 06, 2024
Disposition and Held for Sale [Line Items] |  |  |  |
Loss on sale of subsidiary and subsidiaries held for sale | $ (8,310) | $ 0 | $ 0 |
Gains on dispositions and other strategic transactions | 3,333 | 489 | $ 588 |
Equity Method Investments | 3,800 | $ 1,400 |  |
Brazil Disposal Group |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Foreign Currency Translation Loss | (4,100) |  |  |
Loss on sale of subsidiary and subsidiaries held for sale | (7,100) |  |  |
Total assets |  |  |  | $ 4,924
Businesses Held for Sale |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Loss on sale of subsidiary and subsidiaries held for sale | (1,200) |  |  |
Foreign currency translation loss | (855) |  |  |
Total assets | 894 |  |  |
Dispositions and other Strategic Transactions |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Noncash or Part Noncash Divestiture, Amount of Consideration Received | 3,000 |  |  |
Equity Method Investments | 1,900 |  |  |
Total assets | 1,000 |  |  |
Future Repurchase Obligations | 3,400 |  |  |
Put and Call Options | 630 |  |  |
Dispositions and other Strategic Transactions | Operating Expense |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Gains on dispositions and other strategic transactions | 3,300 |  |  |
Dispositions and other Strategic Transactions | Optum Health |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Gains on dispositions and other strategic transactions | 1,400 |  |  |
Dispositions and other Strategic Transactions | UnitedHealthcare |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Gains on dispositions and other strategic transactions | 1,100 |  |  |
Dispositions and other Strategic Transactions | Optum Insight |  |  |  |
Disposition and Held for Sale [Line Items] |  |  |  |
Gains on dispositions and other strategic transactions | $ 800 |  |  |

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