v3.23.3
Investments - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]          
Available-for-sale debt securities $ 0   $ 0   $ 0
Sales and maturities of short-term investments 325,000,000 $ 885,000,000 1,828,000,000 $ 3,149,000,000  
Debt securities in an unrealized loss position 1,097,000,000   1,097,000,000   748,000,000
Debt securities, unrealized loss     24,000,000   19,000,000
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss 212,000,000   212,000,000   92,000,000
Debt securities, continuous unrealized loss position, 12 months or longer 18,000,000   18,000,000   13,000,000
Equity securities without readily determinable fair value, carrying value 79,000,000   79,000,000   75,000,000
Upward adjustments 0 0 0 0  
Downward adjustments 0 0 0 0  
Cumulative impairment of investments 56,000,000   56,000,000   56,000,000
Equity method investments 8,000,000   8,000,000   $ 14,000,000
Unrealized losses 1,000,000 1,000,000 6,000,000 4,000,000  
Impairment in equity method investments $ 0 $ 0 $ 0 $ 0