CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Unaudited) (Parenthetical) - $ / shares		3 Months Ended		12 Months Ended
	Sep. 20, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Common Stock, Dividends, Per Share, Declared		$ 0.215	$ 0.185
Series A Preferred Stock
Preferred Stock, Dividends Per Share, Declared		$ 0.367188	0.367188
Preferred Stock, Dividend Rate, Percentage		5.875%		5.875%
Series B Preferred Stock
Preferred Stock, Dividends Per Share, Declared		$ 0.367188	$ 0.367188
Preferred Stock, Dividend Rate, Percentage		5.875%		5.875%
Series C Preferred Stock
Preferred Stock, Dividends Per Share, Declared		$ 0.351563
Preferred Stock, Dividend Rate, Percentage	5.625%	5.625%		5.625%
Series 2 CPOP Units [Member]
Preferred Stock, Dividend Rate, Percentage		4.00%