Fair Value Measurement and Fair Value of Financial Instruments (Non-PCI Impaired Loans) (Details)	12 Months Ended
Dec. 31, 2017
Non-PCI Impaired Loans
Fair Values of Derivative Instruments
Period for updated appraisals and evaluations	12 months

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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