Recent Developments (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 06, 2023	Feb. 01, 2022	Jun. 01, 2020	Sep. 19, 2018
Recent Developments [Line Items]
Junior Subordinated Debentures Issued	$ 300
Interest Added to 5 Year UST Rate	2.812%
2023 Subordinated Notes
Recent Developments [Line Items]
Debt Instrument, Term	10 years
Subordinated Borrowing, Due Date	Mar. 01, 2033
Subordinated Borrowing Redemption Date	Mar. 01, 2028
Subordinated Borrowing, Interest Rate	6.625%
Series E Preferred Stock
Recent Developments [Line Items]
Preferred Stock, Dividend Rate, Percentage		5.875%		5.875%
Series F Preferred Stock [Member]
Recent Developments [Line Items]
Preferred Stock, Dividend Rate, Percentage			5.625%
Subsequent Event [Member]
Recent Developments [Line Items]
Dividends Payable, Date Declared		Feb. 01, 2023
Subsequent Event [Member] | Common Stock [Member]
Recent Developments [Line Items]
Dividends Payable, Date to be Paid		Mar. 15, 2023
Dividends Payable, Date of Record		Mar. 01, 2023
Subsequent Event [Member] | Common Stock [Member] | Dividend Declared [Member]
Recent Developments [Line Items]
Common stock, dividends declared ($ per share)		$ 0.21
Subsequent Event [Member] | Series E Preferred Stock
Recent Developments [Line Items]
Dividends Payable, Date to be Paid		Mar. 15, 2023
Dividends Payable, Date of Record		Mar. 01, 2023
Subsequent Event [Member] | Series E Preferred Stock | Dividend Declared [Member]
Recent Developments [Line Items]
Preferred stock, dividends declared ($ per share)		$ 0.3671875
Subsequent Event [Member] | Series F Preferred Stock [Member] | Dividend Declared [Member]
Recent Developments [Line Items]
Preferred stock, dividends declared ($ per share)		$ 0.3515625
Preferred Stock, Dividend Rate, Percentage		5.625%