Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Condensed Combined Balance Sheets
Land	$ 2,122,070	$ 2,184,145
Buildings	6,890,141	6,965,632
Fixtures and tenant improvements	773,664	743,037
Total real estate rental property	9,785,875	9,892,814
Less: Accumulated depreciation	(2,174,268)	(2,062,899)
Real estate rental property, net	7,611,607	7,829,915
Land held for development and construction in progress	125,557	235,385
Total real estate assets, net	7,737,164	8,065,300
Other assets	317,817	359,913
Total assets	8,721,016	9,097,088
Mortgage debt	1,146,154	1,183,164
Total liabilities	5,440,366	5,633,619
Total liabilities and equity	8,721,016	9,097,088
Company's share of accumulated equity	95,577	115,871
Redeemable preferred equity	402,291	395,156
Basis differentials	(37,110)	(42,402)
Deferred development fees, net of portion related to the Company's interest	(2,630)	(2,449)
Amounts payable to the Company	2,481	1,556
Investments in and Advances to Joint Ventures	460,609	467,732
Unconsolidated Joint Ventures [Member]
Condensed Combined Balance Sheets
Land	1,296,413	1,343,889
Buildings	3,398,184	3,551,227
Fixtures and tenant improvements	198,657	191,581
Total real estate rental property	4,893,254	5,086,697
Less: Accumulated depreciation	(854,821)	(817,235)
Real estate rental property, net	4,038,433	4,269,462
Land held for development and construction in progress	51,967	52,390
Total real estate assets, net	4,090,400	4,321,852
Cash and restricted cash	76,447	58,916
Receivables, net	50,461	52,768
Other assets	268,726	318,546
Total assets	4,486,034	4,752,082
Mortgage debt	3,095,354	3,177,603
Notes and accrued interest payable to the Company	2,481	1,556
Other liabilities	216,229	219,799
Total liabilities	3,314,064	3,398,958
Redeemable preferred equity – DDR	402,291	395,156
Accumulated equity	769,679	957,968
Total liabilities and equity	$ 4,486,034	$ 4,752,082