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Financial Instruments - Equity Warrants and Non-Marketable Equity Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2024
Dec. 31, 2023
Derivative [Line Items]        
Equity investments without readily determinable fair values     $ 815 $ 754
Payments to acquire nonmarketable securities $ 2,750 $ 1,250    
Warrant | Level 2 assets        
Derivative [Line Items]        
Fair value of warrant assets     $ 2,100 $ 2,200