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Investments in and Advances to Joint Ventures - Investments in and Advances to Joint Ventures (Detail) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Schedule Of Equity Method Investments Joint Ventures [Line Items]    
Investments in and Advances to Joint Ventures $ 617,010,000 $ 613,017,000
Unconsolidated Joint Ventures [Member]
    
Schedule Of Equity Method Investments Joint Ventures [Line Items]    
Company's share of accumulated equity 433,800,000 432,500,000
Redeemable preferred equity and notes receivable from investments 155,700,000 155,000,000
Basis differentials (4,600,000) (5,900,000)
Deferred development fees, net of portion related to the Company's interest (3,000,000) (2,900,000)
Notes and accrued interest payable to DDR 35,100,000 34,300,000
Investments in and Advances to Joint Ventures $ 617,000,000 $ 613,000,000