Significant Accounting Policies - Narrative (Details)	12 Months Ended
Dec. 31, 2021 USD ($)
Change in Accounting Estimate [Line Items]
Performance obligation, description of timing	one year or less
Past due threshold period for nonaccrual status	90 days
Past due threshold period for nonaccrual status, consumer real estate loans	30 days
TD Merger Agreement
Change in Accounting Estimate [Line Items]
Merger and integration expense	$ 0
Deposit Bases
Change in Accounting Estimate [Line Items]
Intangible assets, amortization period	10 years
Minimum \| Furniture and Fixtures
Change in Accounting Estimate [Line Items]
Useful life of premises and equipment	3 years
Minimum \| Building
Change in Accounting Estimate [Line Items]
Useful life of premises and equipment	7 years
Maximum \| Furniture and Fixtures
Change in Accounting Estimate [Line Items]
Useful life of premises and equipment	15 years
Maximum \| Building
Change in Accounting Estimate [Line Items]
Useful life of premises and equipment	45 years
Non-Accruing
Change in Accounting Estimate [Line Items]
Accounts receivable, net	$ 12,000,000

Financing Receivable, Past Due Threshold Period For Nonaccrual Status

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- Definition

Financing Receivable, Past Due Threshold Period For Nonaccrual Status, Consumer Real Estate Loans

+ References

No definition available.

+ Details

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 310
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123366838&loc=d3e3073-115593

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(5))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

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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

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

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