XML 51 R38.htm IDEA: XBRL DOCUMENT v3.10.0.1
Held For Sale/Disposed Assets (Narrative) (Details)
$ in Millions
6 Months Ended
Jun. 30, 2018
USD ($)
property
Jun. 30, 2017
USD ($)
property
Held For Sale Assets [Line Items]    
Number of properties | property 195  
Discontinued Operations, Held-for-sale [Member]    
Held For Sale Assets [Line Items]    
Number of properties | property 0  
Los Angeles [Member] | Discontinued Operations, Disposed of by Sale [Member]    
Held For Sale Assets [Line Items]    
Number of properties sold | property   1
Proceeds from sale of property   $ 25.3
Gain on sale of property   $ 10.1
Washington D.C. [Member] | Discontinued Operations, Disposed of by Sale [Member]    
Held For Sale Assets [Line Items]    
Number of properties sold | property 1  
Proceeds from sale of property $ 20.3  
Gain on sale of property $ 3.3  
Miami [Member] | Discontinued Operations, Disposed of by Sale [Member]    
Held For Sale Assets [Line Items]    
Number of properties sold | property 1  
Proceeds from sale of property $ 24.3  
Gain on sale of property $ 11.7