Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Preferred Series E [Member]
Preferred stock per share dividend amount	$ 16.125	$ 16.125	$ 48.375	$ 48.375
Preferred Series F [Member]
Preferred stock per share dividend amount	128.125	128.125	384.375	384.375
Preferred Series G [Member]
Preferred stock per share dividend amount	125.00	125.00	375.00	375.694
Retained Earnings [Member]
Common stock per share dividend amount	$ 1.10	$ 1.10	$ 3.30	$ 3.30