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Financial Instruments - Investments by Classification Type (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Short-term investments    
Equity securities with readily determinable fair values [1] $ 975 $ 5,124
Available-for-sale debt securities 4,401 4,400
Held-to-maturity debt securities 673 313
Total Short-term investments 6,048 9,837
Long-term investments    
Equity securities with readily determinable fair values [2] 2,210 2,779
Available-for-sale debt securities 69 150
Held-to-maturity debt securities 54 47
Private equity securities at cost [2] 786 755
Total Long-term investments 3,119 3,731
Equity-method investments 8,029 11,637
Total long-term investments and equity-method investments 11,149 15,368
Held-to-maturity cash equivalents $ 317 $ 207
[1] Represent money market funds primarily invested in U.S. Treasury and government debt.
[2] Represent investments in the life sciences sector