Borrowed Funds - Subordinated Notes (Details) - Subordinated notes $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Subordinated notes maturing in 2028
Debt Instrument
Interest Rate	5.90%
Original Issue Amount	$ 300
Subordinated notes maturing in 2028 | London Interbank Offered Rate
Debt Instrument
Variable rate on spread	2.78%
Subordinated notes maturing in 2030
Debt Instrument
Interest Rate	4.125%
Original Issue Amount	$ 150