Consolidated Statements of Changes in Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash dividends declared per common share (in dollars per share)	$ 0.75	$ 0.74	$ 0.71
Series D Preferred Stock
Cash dividends declared on Preferred Stock (in dollars per share)	50.00	50.00	50.00
Series E Preferred Stock
Cash dividends declared on Preferred Stock (in dollars per share)	1.531252	1.531252	1.531252
Series F Preferred Stock
Cash dividends declared on Preferred Stock (in dollars per share)	1.4125	1.4125	1.4125
Series G Preferred Stock
Cash dividends declared on Preferred Stock (in dollars per share)	$ 1.406252	$ 1.406252	$ 0.882813