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Loans and Leases - Summary of Collateral-Dependent Loans Held for Investment by Collateral Type (Details) $ in Millions	Jun. 30, 2021 USD ($)
Real Estate
Disclosure of Summary of Collateral Dependent Loans Held for Investment by Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	$ 33
Assets received as collateral	33
Real Estate | Multi-Family
Disclosure of Summary of Collateral Dependent Loans Held for Investment by Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	7
Real Estate | Commercial Real Estate
Disclosure of Summary of Collateral Dependent Loans Held for Investment by Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	26
Other
Disclosure of Summary of Collateral Dependent Loans Held for Investment by Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	15
Other | Commercial and Industrial
Disclosure of Summary of Collateral Dependent Loans Held for Investment by Collateral Type [Line Items]
Loans and leases receivable, collateral for secured borrowings	$ 15

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- Definition

Assets received as collateral.

+ References

No definition available.

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- Definition

Disclosure of summary of collateral dependent loans held for investment by collateral type.

+ References

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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=121611835&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

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