Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Preferred Series E [Member]
Preferred stock per share dividend amount	$ 16.125	$ 16.125
Preferred Series F [Member]
Preferred stock per share dividend amount	128.125	128.125
Preferred Series G [Member]
Preferred stock per share dividend amount	125.00	125.694
Retained Earnings [Member]
Common stock per share dividend amount	$ 1.10	$ 1.10