Commitments and Contingent Liabilities, Risk Participation Agreements (Details) $ in Millions	12 Months Ended
	Jun. 30, 2019 USD ($) Counterparty	Jun. 30, 2018 USD ($)
Risk Participation Agreements [Abstract]
Credit exposure risk participations out	$ 0.0	$ 0.0
Credit exposure risk participations in	$ 1.2	$ 0.0
Number of counterparties | Counterparty	3
Minimum [Member]
Risk Participation Agreements [Abstract]
Credit exposure term	5 years
Maximum [Member]
Risk Participation Agreements [Abstract]
Credit exposure term	10 years