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, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accounting Policies [Abstract]
Marketable equity securities valuation gains (losses)	$ (4,322)		$ 157		$ (12,567)	$ 81
Equity warrant valuation gains (losses)	(1,124)		939		(1,436)	1,244
Upward adjustments relating to equity investments in private companies	58		31		65	1,506
Foreign currency gains (losses)	(117)		110		(103)	79
Other, net	(40)		24		(74)	48
Total other income (expense), net	(5,545)		1,261		(14,115)	2,958
Schedule of Investments [Line Items]
Marketable equity securities valuation gains (losses)	(4,322)		157		(12,567)	81
Loss from operations	3,317		7,702		6,986	16,567
Net loss	(2,028)		$ 7,778		(5,872)	$ 15,885	$ 11,607	$ 29,438
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Accounting Policies [Abstract]
Marketable equity securities valuation gains (losses)	(3,900)				(11,500)
Schedule of Investments [Line Items]
Marketable equity securities valuation gains (losses)	$ (3,900)				$ (11,500)
Equity investment, shares held (in shares)	158				158		158
Equity investment, ownership percentage	18.00%				18.00%		18.00%
Equity investment, voting interest	16.00%				16.00%		16.00%
Revenues		$ 95		$ 0
Gross profit		(502)		0
Loss from operations		(1,579)		(410)
Net loss		$ (1,593)		$ (414)