Consolidated Statements of Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Distributions on common shares/units (per share/unit)	$ 0.38	[1]	$ 0.28

[1] Amount is rounded to the nearest whole cent for presentation purposes.