Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash dividends declared on common stock (usd per share)	$ 1.12	$ 1.00	$ 0.76
Dividends on preferred stock (usd per share)		$ 1.64	$ 1.64
Series D preferred stock
Dividends on preferred stock (usd per share)	1.64
Series E Preferred Stock
Dividends on preferred stock (usd per share)	$ 1,145.84