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Commitments and Contingencies (Narratives) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Commitments and Contingencies [Abstract]    
Allowance For Credit Losses For Off-Balance Sheet $ 1.2 $ 1.1
Contingency loss accrued liability 5.6 8.1
Other non-credit commitments $ 10.1 $ 9.0