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Fair Value of Financial Instruments (Narrative) (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Jun. 30, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans with fair value option in non-accrual $ 0    
Loans with fair value option, 90 days past due and still accruing $ 0    
Fair Value, Nonrecurring [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets measured at fair value   $ 0 $ 0
Liabilities measured at fair value   $ 0 $ 0