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Borrowings - Lines of Credit (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Five-Year Credit Agreement        
Lines of Credit        
Amount of credit facility $ 7,500      
Credit facility term 5 years      
Three-Year Credit Agreement        
Lines of Credit        
Amount of credit facility $ 2,500      
Credit facility term 3 years      
Credit Facilities        
Lines of Credit        
Amount of credit facility   $ 10,000    
Expenses related to credit facility   11 $ 12 $ 12
Borrowings outstanding   $ 0