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Accounting Policies and Supplemental Disclosures - Other Income (Expense), Net (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Accounting Policies [Abstract] |  |
Marketable equity securities valuation gains (losses) | $ (138) | $ (2,126)
Equity warrant valuation gains (losses) | (378) | (230)
Reclassification adjustment for gains (losses) on available-for-sale debt securities | 3,263 | (1)
Upward adjustments relating to equity investments in private companies | 37 | 5
Foreign currency gains (losses) | (2) | (74)
Other, net | (33) | (247)
Total other income (expense), net | $ 2,749 | $ (2,673)

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