Consolidated Statement of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Common stock dividends, share	$ 0.48	$ 0.46	$ 0.96	$ 0.92
Series A [Member]
Preferred stock dividends declared per share	1,587.52	884.722	3,049.948	1,759.722
Series B [Member]
Preferred stock dividends declared per share	370.338	221.181	709.695	439.931
Series J [Member]
Preferred stock dividends declared per share			662.5	662.5
Series K [Member]
Preferred stock dividends declared per share	343.75	343.75	687.5	687.5
Series L [Member]
Preferred stock dividends declared per share	234.375	234.375	468.75	468.75
Series M [Member]
Preferred stock dividends declared per share	250	250	500	500
Series N [Member]
Preferred stock dividends declared per share	231.25	231.25	462.5	462.5
Series O [Member]
Preferred stock dividends declared per share	$ 281.25	$ 281.25	$ 562.5	$ 487.5