XML 34 R23.htm IDEA: XBRL DOCUMENT v3.5.0.2
Related Party Transactions and Investments in Non-Consolidated Entities - Investment in Sponsored REITs (Details)
 9 Months Ended
Sep. 30, 2016
entity
property
Dec. 31, 2015
entity
Related Party Transactions and Investments in Non-Consolidated Entities    
Number of REITs in which the entity holds non-controlling common stock interest | entity 7 9
Number of REITs in which the entity holds non-controlling preferred stock interest | entity 2  
Number of sponsored REITs having properties which were sold | property 2  
Number of properties sold | property 2