Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014
Stockholders' Equity Note Disclosure, Disclosure of Compensation Related Costs, Share-based Payments and Earnings Per Share [Abstract]
Partnership Unit, Dividends, Per Share, Cash Paid	$ 0.085
Shares and Units [Abstract]
OP units outstanding (shares)	245,964,043		245,964,043
OP units owned by the Company (shares)	95,607,990		95,607,990
OP units owned by the Company, percent			38.90%
OP units not owned by the Company (shares)	150,356,053		150,356,053
OP units not owned by the Company, percent			61.10%
Dividends and Distributions [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.085	$ 0.085	$ 0.17
Dividends paid to common shareholders	$ 8.1		$ 16.3
Distributions paid to OP unitholders	$ 12.8		$ 25.6