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Investments in and Advances to Joint Ventures - Investments in and Advances to Joint Ventures (Detail) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]    
Notes and accrued interest payable to DDR $ 35,900,000 $ 34,300,000
Investments in and Advances to Joint Ventures 631,983,000 613,017,000
Unconsolidated Joint Ventures [Member]
    
Schedule of Equity Method Investments [Line Items]    
Company's share of accumulated equity 391,400,000 432,500,000
Redeemable preferred equity and other 199,000,000 155,000,000
Basis differentials 8,600,000 (5,900,000)
Deferred development fees, net of portion related to the Company's interest (2,900,000) (2,900,000)
Notes and accrued interest payable to DDR 35,900,000 34,300,000
Investments in and Advances to Joint Ventures $ 632,000,000 $ 613,000,000