Accounting Policies and Supplemental Disclosures - Other Income (Expense), Net (Details) - USD ($) $ in Millions	3 Months Ended
	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)