CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Common stock dividend, per share, cash paid	$ 0.32	$ 0.28
Series A Preferred Stock [Member]
Preferred stock (in usd per share)	0.7344	0.7344
Series B Preferred Stock [Member]
Preferred stock (in usd per share)	0.8594	0.5347
Series C Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0.75	$ 0.0458