Consolidated Statement of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Common stock dividends, share	$ 0.46	$ 0.42
Series A [Member]
Preferred stock dividends declared per share	875.00	875.00
Series B [Member]
Preferred stock dividends declared per share	218.75	218.75
Series F [Member]
Preferred stock dividends declared per share		406.25
Series I [Member]
Preferred stock dividends declared per share		232.953
Series J [Member]
Preferred stock dividends declared per share	662.50	662.50
Series K [Member]
Preferred stock dividends declared per share	343.75	343.75
Series L [Member]
Preferred stock dividends declared per share	234.375	234.375
Series M [Member]
Preferred stock dividends declared per share	250.00	$ 202.778
Series N [Member]
Preferred stock dividends declared per share	231.25
Series O [Member]
Preferred stock dividends declared per share	$ 206.25