Credit relationship amount minimum.

No definition available.

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- Definition

Carrying value of foreclosed residential real estate properties included in other real estate.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Impairment of collateral loan.

+ References

No definition available.

+ Details

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- Definition

Loan relationship amount.

+ References

No definition available.

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- Definition

Number of troubled debt restructuring payment default within twelve months.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

+ References

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- Definition

Description of the sources of credit risk exposure faced by the entity.

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Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

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Balance Type:	na
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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Loans Held for Sale, Loans and Allowance for Credit Losses - Additional Information (Details)		3 Months Ended
	Jan. 01, 2020 USD ($)	Mar. 31, 2020 USD ($) TDR	Jun. 30, 2019 USD ($)	Mar. 31, 2019 TDR	Dec. 31, 2019 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Description policy review		two times per year
Relationships amount			$ 5,000,000.0
Loans amount			$ 5,000,000.0
Allowance for Credit Losses	$ 75,900,000	$ 82,200,000
Collateral loans impaired		$ 147,600,000
Number of TDRs \| TDR		0		0
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Foreclosed residential properties		$ 97,000			$ 151,000
Residential Real Estate \| Consumer Loans
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans in process of foreclosure		0			$ 4,400,000
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Charge-offs related loans modified into TDRs		6,800,000
Customer Concentration \| Accounts Receivable \| Minimum
Accounts Notes And Loans Receivable [Line Items]
Consumer purpose loan risk		2,500,000
Customer Concentration \| Accounts Receivable \| Minimum \| Criticized
Accounts Notes And Loans Receivable [Line Items]
Consumer purpose loan risk		2,500,000
Customer Concentration \| Accounts Receivable \| Minimum \| NSC
Accounts Notes And Loans Receivable [Line Items]
Consumer purpose loan risk		10,000,000
Customer Concentration \| Accounts Receivable \| Maximum
Accounts Notes And Loans Receivable [Line Items]
Consumer purpose loan risk		$ 10,000,000.0