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Loans - Schedule of Outstanding Unpaid Principal Balance and Accrual Status of Loans Acquired With Credit Impairment (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Deteriorated Loans Transferred in [Abstract]    
Outstanding principal $ 49.8 $ 43.4
Loans on accrual status 36.8 30.2
Total carrying value $ 36.8 $ 30.2