Deposits - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Deposits
Aggregate Amount of Deposits With a Minimum Denomination of $250,000	$ 1,200.0	$ 848.9
Interest-bearing Domestic Deposit, Brokered	146.5	10.8
Deposits Held for Affiliates	$ 6.6	$ 6.0

Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

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