Business Combinations - Schedule of Unpaid Balance and Fair Value of the Acquired Loan Portfolio (Details) - SVB $ in Millions	Mar. 27, 2023 USD ($)
Business Acquisition [Line Items]
UPB	$ 71,271
Loans and Leases, FV	68,503
Non-PCD
Business Acquisition [Line Items]
UPB	68,742
Loans and Leases, FV	66,473
PCD
Business Acquisition [Line Items]
UPB	2,529
Loans and Leases, FV	$ 2,030

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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- Definition

Amount at par value of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 19
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447

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- Definition

Amount at purchase price of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 19
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447

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