Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Regulatory Capital - Narrative (Details) - Subordinated Debt - USD ($) $ in Millions	Jun. 02, 2022	May 25, 2017
4.75% notes maturing May 25, 2027
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Principal balance		$ 60.0
5.000% notes due 2032
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Principal balance	$ 100.0
Fixed to floating interest rate	5.00%