CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	8 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Apr. 30, 2018	Apr. 30, 2017
Distributions - common shares and units (in dollars per share)	$ 2.10	$ 2.80	$ 2.80	$ 4.60
Series A Preferred Stock
Distributions - preferred shares (in dollars per share)				1.0312
Series B Preferred Stock
Distributions - preferred shares (in dollars per share)			0.9938	$ 1.9875
Series C Preferred Stock
Distributions - common shares and units (in dollars per share)	$ 1.2422
Distributions - preferred shares (in dollars per share)		$ 1.65625	$ 1.65625