Capital and Financing Transactions - Mortgage Notes Payable (Details) (USD $)	Jun. 30, 2014	Apr. 14, 2014
Mortgages
Debt Instrument [Line Items]
Modified mortgage loan	$ 1,100,000,000
Unamortized premium on debt acquired	15,200,000
Effective interest rate on notes payable	4.67%
One Orlando Center | FLORIDA
Debt Instrument [Line Items]
Debt assumed in a business combination		68,300,000
First Mortgage | One Orlando Center | FLORIDA
Debt Instrument [Line Items]
Debt instrument face amount		54,000,000
Fair value of subordinated note		56,000,000
Second Mortgage | One Orlando Center | FLORIDA
Debt Instrument [Line Items]
Debt instrument face amount		15,300,000
One Orlando Center
Debt Instrument [Line Items]
Distribution Preference, Percentage of Annual Return on Equity Investment		12.00%
Distribution Preference, Fourth, Percentage of Proceeds		60.00%
Distribution Preference, Fourth, Percentage of Proceeds to Lender		40.00%
Distribution Preference, Fifth, Remaining Proceeds		100.00%
One Orlando Center | Second Mortgage | FLORIDA
Debt Instrument [Line Items]
Fair value of subordinated note	$ 0	$ 0