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Financial Instruments - Information on Available-for-sale Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	$ 117		$ 337
Debt securities, unrealized gains	0		0
Debt securities, unrealized losses	0		0
Debt securities, fair value	117		337
Publicly traded equity securities, fair value	908		764
Total debt and publicly traded equity securities, fair value	1,025		1,101
Unrealized net gains (losses)	143	$ 338
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	40		252
Debt securities, unrealized gains	0		0
Debt securities, unrealized losses	0		0
Debt securities, fair value	40		252
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	77		72
Debt securities, unrealized gains	0		0
Debt securities, unrealized losses	0		0
Debt securities, fair value	77		72
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Debt securities, amortized cost	0		13
Debt securities, unrealized gains	0		0
Debt securities, unrealized losses	0		0
Debt securities, fair value	$ 0		$ 13

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