Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Shares and Units [Abstract]
OP units outstanding (shares)	245,894,321
OP units owned by the Company (shares)	95,618,664
OP units owned by the Company, percent	38.90%
OP units not owned by the Company (shares)	150,275,657
OP units not owned by the Company, percent	61.10%
Dividends and Distributions [Abstract]
Partial dividend paid, per common share	$ 0.085
Partial dividend paid, per OP unit	$ 0.085
Dividends paid to common shareholders	$ 8.1
Distributions paid to OP unitholders	$ 12.8