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Financial Instruments - Information on Available-for-sale Investments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 707		$ 707		$ 536
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	707		707		536
Publicly traded equity securities, fair value	1,181		1,181		920
Total debt and publicly traded equity securities, fair value	1,888		1,888		1,456
Unrealized net gains (losses)	147	$ (8)	262	$ 125
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	416		416		348
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	416		416		348
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	290		290		188
Debt securities, unrealized gains	0		0		0
Debt securities, unrealized losses	0		0		0
Debt securities, fair value	290		290		188
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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