Financial Instruments - Investments - Short-term, Long-term and Equity Method Investments (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Short-term investments
Equity securities with readily determinable fair values	[1]	$ 5,124	$ 1,588
Available-for-sale debt securities		4,400	18,743
Held-to-maturity debt securities		313	1,985
Total Short-term investments		9,837	22,316
Long-term investments
Equity securities with readily determinable fair values	[2]	2,779	2,836
Available-for-sale debt securities		150	352
Held-to-maturity debt securities		47	48
Private equity securities at cost	[2]	755	800
Long-term investments		3,731	4,036
Equity-method investments		11,637	11,033
Total long-term investments and equity-method investments		15,368	15,069
Held-to-maturity cash equivalents		$ 207	$ 679

[1] Represent money market funds primarily invested in U.S. Treasury and government debt.

[2] Represent investments in the life sciences sector.