CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Unaudited (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Common stock, per share	$ 0.16	$ 0.14
Preferred stock Series I
Preferred stock, per share	414.06	414.06
Preferred stock Series J
Preferred stock, per share	$ 612.5	$ 612.5