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Loans and Leases - Collateral-Dependent Loans Narrative (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, allowance for credit loss, writeoff, collateral | $ 1,000,000 | $ 0
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable, collateral for secured borrowings | 120,000,000 | 167,000,000
C&I (a) |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, allowance for credit loss, writeoff, collateral | 26,000,000 | 36,000,000
C&I (a) | Commercial | C&I |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable, collateral for secured borrowings | 115,000,000 |
CRE (b) | Commercial | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable, collateral for secured borrowings | 5,000,000 |
HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable, collateral for secured borrowings | 7,000,000 | 9,000,000
Real estate installment loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and leases receivable, collateral for secured borrowings | $ 20,000,000 | $ 26,000,000

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- Definition Financing Receivable, Allowance for Credit Loss, Writeoff, Collateral + References No definition available. + Details
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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. + Details
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- Definition Reflects the aggregate value of loans, trade receivables, securities and financial instruments that serve as collateral for obligations arising from a transfer of financial assets recorded as a secured borrowing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5086-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
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- Details
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- Details
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