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Investments and Fair Value Measurement - Investments (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Marketable Securities [Line Items] |  |
Non-marketable equity securities | $ 306 | $ 315
Note receivable from a related party | 130 | 132
Investments | 6,247 | 11,806
Didi |  |
Marketable Securities [Line Items] |  |
Marketable equity securities: | 1,410 | 2,838
Grab |  |
Marketable Securities [Line Items] |  |
Marketable equity securities: | 1,876 | 3,821
Aurora |  |
Marketable Securities [Line Items] |  |
Marketable equity securities: | 1,682 | 3,388
Other |  |
Marketable Securities [Line Items] |  |
Marketable equity securities: | $ 843 | $ 1,312

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