CONSOLIDATED STATEMENT OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Issuance of common stock distributions per share (in dollars per share)	$ 1.26	$ 0.36
Common stock distributions and distributions payable, per share (in dollars per share)	0.68	1.41
Series D Cumulative Redeemable Preferred Stock
Preferred stock dividends declared (in dollars per share)	0.527778	$ 2.00
Series E Cumulative Redeemable Preferred Stock
Preferred stock dividends declared (in dollars per share)	1.404450
Series F Cumulative Redeemable Preferred Stock
Preferred stock dividends declared (in dollars per share)	$ 1.00785