Financial Instruments - Gains and Losses on Marketable and Non-Marketable Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Fair Value Disclosures [Abstract]
Realized net gain (loss) on equity securities sold during the period	$ 217	$ 64	$ 435	$ 184
Unrealized net gain (loss) on marketable equity securities	853	(350)	1,088	(214)
Unrealized net gain (loss) on non-marketable equity securities	216	(428)	9,521	1,559
Total gain (loss) on equity securities in other income (expense), net	1,286	(714)	11,044	1,529
Non-marketable securities upward adjustment	660	319	10,400	3,100
Non-marketable securities, downward adjustment	$ 454	$ 745	$ 853	$ 1,600