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Fair Value - Held to Maturity Investment Securities (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Reported Value Measurement    
Schedule of Held-to-Maturity Securities [Line Items]    
Held-to-maturity investment securities, Fair Value $ 177 $ 177
Estimate of Fair Value Measurement    
Schedule of Held-to-Maturity Securities [Line Items]    
Held-to-maturity investment securities, Fair Value $ 171 $ 170