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Investments - Equity Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Increase (Decrease) In Equity Investments [Roll Forward]    
Marketable securities, beginning balance $ 399  
Marketable securities, Purchases 0  
Marketable securities, Sales 0  
Marketable securities, Changes in Fair Value (66)  
Marketable Securities, Other 3  
Marketable securities, ending balance 336  
Nonmarketable securities, beginning balance 1,331  
Nonmarketable Securities, Purchases 22  
Nonmarketable Securities, Sales (44)  
Nonmarketable Securities, Changes in Fair Value (146)  
Nonmarketable Securities, Other 4  
Nonmarketable securities, ending balance 1,167  
Total equity investments, beginning balance 1,730  
Total equity investments, Purchases 22  
Total equity investments, Sales (44) $ 0
Total equity investments, Changes in Fair Value (212)  
Total equity investments, Other 7  
Total equity investments, ending balance $ 1,503