CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Common stock dividend, per share, cash paid	$ 0.42	$ 0.36
Series A Preferred Stock [Member]
Preferred stock (in usd per share)	$ 1.1016	$ 1.0322
Series B Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0.8832	$ 0
Series C Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0.4167	$ 0
Retired Series C Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0	$ 2.36