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Investments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Equity Method Investments [Line Items] |  |  |
Contributions to investments | $ 16,448 | $ 5,051 | $ 35,713
Proceeds from investments | 15,739 | 10,619 | 45,489
Time Deposits |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Contributions to investments | 15,794 | 4,358 | 34,905
Proceeds from investments | $ 15,140 | $ 9,943 | $ 44,372

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