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Financial Instruments - Schedule of Information on Available-for-sale Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 145		$ 145		$ 536
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	145		145		536
Publicly traded equity securities, fair value	1,546		1,546		920
Total debt and publicly traded equity securities, fair value	1,691		1,691		1,456
Unrealized net gains (losses)	367	$ (42)	630	$ 82
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	99		99		188
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	99		99		188
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	45		45		348
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	45		45		348
Foreign government bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1		1		0
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	$ 1		$ 1		$ 0

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