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Investments in and Advances to Joint Ventures - Investments in and Advances to Joint Ventures (Parenthetical) (Detail) (USD $)
1 Months Ended 12 Months Ended
Dec. 31, 2013
Blackstone Group LP [Member]
Oct. 31, 2013
BRE DDR Retail Holdings I [Member]
Dec. 31, 2012
BRE DDR Retail Holdings I [Member]
Jun. 30, 2012
BRE DDR Retail Holdings I [Member]
Dec. 31, 2013
Assets Acquired [Member]
BRE DDR Retail Holdings I [Member]
Assets
Dec. 31, 2012
Assets Acquired [Member]
BRE DDR Retail Holdings I [Member]
Schedule of Equity Method Investments [Line Items]            
Preferred equity investments with affiliates of Blackstone $ 71,771,000   $ 154,556,000 $ 150,000,000    
Preferred investment applied to acquisition   $ 110,000,000       $ 110,000,000
Number of assets acquired         30