Financial Instruments - Schedule of Information on Debt and Equity Securities (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	$ 101	$ 536
Debt securities, gross unrealized gains	0	0
Debt securities, gross unrealized losses	0	0
Debt securities, fair value	101	536
Publicly traded equity securities	1,392	920
Total debt and publicly traded equity securities, fair value	1,493	1,456
Unrealized net gains (losses)	474	(30)
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	100	188
Debt securities, gross unrealized gains	0	0
Debt securities, gross unrealized losses	0	0
Debt securities, fair value	100	188
Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	1	0
Debt securities, gross unrealized gains	0	0
Debt securities, gross unrealized losses	0	0
Debt securities, fair value	1	0
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	0	348
Debt securities, gross unrealized gains	0	0
Debt securities, gross unrealized losses	0	0
Debt securities, fair value	$ 0	$ 348

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