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Investments - Maturity Distribution Based on Contractual Terms of Investment Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Available-For-Sale Amortized Cost    
Due within 1 year $ 156  
Due after 1 year through 5 years 119  
Amortized Cost 275 $ 278
Available-For-Sale Fair Value    
Due within 1 year 155  
Due after 1 year through 5 years 116  
Total $ 271 $ 272