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Investments - Narrative: Available-for-sale Investments (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items] |  |
Cash | $ 496 | $ 4,970
Cash and Cash Equivalents, at Carrying Value | 31,560 | $ 7,629
Horizon Therapeutics |  |
Debt Securities, Available-for-sale [Line Items] |  |
Cash payment | $ 27,800 |

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