Short and Long-term Funding Short and Long-term Funding (Details Textuals) - USD ($) $ in Millions				3 Months Ended
	Feb. 10, 2023	Feb. 06, 2023	Nov. 13, 2014	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Debt Instrument, Redemption Period, Start Date		Mar. 01, 2028
Fair Value of Pledged Securities to Securities Sold under Agreements to Repurchase					191.00%
Interest Added to 5 Year UST Rate	2.812%
Weighted Average Coupon Rate					4.93%	4.06%
Prepayment of FHLB Advances				$ 400
Maximum
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged					$ 10,500
Two Thousand Fourteen Subordinated Notes [Member]
Debt Instrument [Line Items]
Junior Subordinated Debentures Issued			$ 250
Debt Instrument, Term			10 years
Debt Instrument, Maturity Date Month, Year			January 2025
Debt Instrument Call Date Earliest Month Year			October 2024
Subordinated Borrowing, Interest Rate			4.25%
Two Thousand Twenty Three Subordinated Notes
Debt Instrument [Line Items]
Junior Subordinated Debentures Issued		$ 300
Debt Instrument, Term		10 years
Debt Instrument, Maturity Date Month, Year		March 1, 2033
Subordinated Borrowing, Interest Rate		6.625%