Accounting Policies and Supplemental Disclosures - Other Income (Expense), Net (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounting Policies [Abstract]
Marketable equity securities valuation gains (losses)	$ 443		$ 299		$ (1,683)	$ (181)
Equity warrant valuation gains (losses)	(271)		(220)		(501)	(161)
Upward adjustments relating to equity investments in private companies	6		10		11	26
Foreign currency gains (losses)	(138)		9		(212)	79
Other, net	(58)		(37)		(306)	(145)
Total other income (expense), net	(18)		61		(2,691)	(382)
Schedule of Investments [Line Items]
Marketable equity securities valuation gains (losses)	443		299		(1,683)	(181)
Loss from operations	14,672		7,681		29,979	12,455
Net loss	13,485		6,750		23,916	9,922	$ 44,419	$ 13,072
Equity method investment, nonconsolidated investee
Accounting Policies [Abstract]
Marketable equity securities valuation gains (losses)	391		187		(1,600)	(280)
Schedule of Investments [Line Items]
Marketable equity securities valuation gains (losses)	$ 391		$ 187		$ (1,600)	$ (280)
Equity investment, shares held (in shares)	158				158		158
Equity investment, ownership percentage	16.00%				16.00%		16.00%
Equity investment, voting interest	15.00%				15.00%		15.00%
Equity investment, fair value	$ 2,100				$ 2,100		$ 2,100		$ 3,700
Revenues		$ 1,204		$ 661
Gross profit		(527)		(535)
Loss from operations		(1,484)		(1,433)
Net loss		$ (1,446)		$ (1,349)