Consolidated Statement of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Common stock dividends, share	$ 0.46	$ 0.42	$ 0.92	$ 0.84
Series A [Member]
Preferred stock dividends declared per share	884.722	884.722	1,759.722	1,759.722
Series B [Member]
Preferred stock dividends declared per share	221.181	221.181	439.931	439.931
Series F [Member]
Preferred stock dividends declared per share		406.25		812.5
Series I [Member]
Preferred stock dividends declared per share				232.953
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	$ 452.778
Series N [Member]
Preferred stock dividends declared per share	231.25		462.5
Series O [Member]
Preferred stock dividends declared per share	$ 281.25		$ 487.5