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Investments - Components of Nonmarketable securities (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Nonmarketable Securities [Abstract] |  |
Measurement alternative | $ 1,184 | $ 1,140
Equity method | 253 | 230
Total Nonmarketable securities | $ 1,437 | $ 1,370

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- Definition Alternative Investment, Carrying Value + References No definition available. + Details
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- Definition Alternative Investment, Equity Method Investment + References No definition available. + Details
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- Definition Nonmarketable Securities + References No definition available. + Details
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- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
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