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Investments - Equity Securities without Readily Determinable Fair Value (Details) - USD ($) $ in Millions | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Nonmarketable Securities [Abstract] |  |
Measurement alternative | $ 1,246 | $ 1,242
Equity method | 273 | 260
Total Nonmarketable securities | $ 1,519 | $ 1,502

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