Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Condensed Combined Balance Sheets
Land	$ 2,137,889	$ 2,184,145
Buildings	6,893,792	6,965,632
Fixtures and tenant improvements	756,617	743,037
Total real estate rental property	9,788,298	9,892,814
Less: Accumulated depreciation	(2,115,084)	(2,062,899)
Real estate rental property, net	7,673,214	7,829,915
Land held for development and construction in progress	161,663	235,385
Total real estate assets, net	7,834,877	8,065,300
Other assets	321,994	359,913
Total assets	8,821,586	9,097,088
Mortgage debt	1,164,819	1,183,164
Total liabilities	5,412,794	5,633,619
Total liabilities and equity	8,821,586	9,097,088
Company's share of accumulated equity	104,500	115,871
Redeemable preferred equity	400,203	395,156
Basis differentials	(39,325)	(42,402)
Deferred development fees, net of portion related to the Company's interest	(2,531)	(2,449)
Amounts payable to the Company	2,542	1,556
Investments in and Advances to Joint Ventures	465,389	467,732
Unconsolidated Joint Ventures [Member]
Condensed Combined Balance Sheets
Land	1,306,704	1,343,889
Buildings	3,449,494	3,551,227
Fixtures and tenant improvements	192,647	191,581
Total real estate rental property	4,948,845	5,086,697
Less: Accumulated depreciation	(840,227)	(817,235)
Real estate rental property, net	4,108,618	4,269,462
Land held for development and construction in progress	58,654	52,390
Total real estate assets, net	4,167,272	4,321,852
Cash and restricted cash	69,815	58,916
Receivables, net	48,568	52,768
Other assets	286,501	318,546
Total assets	4,572,156	4,752,082
Mortgage debt	3,118,908	3,177,603
Notes and accrued interest payable to the Company	2,555	1,556
Other liabilities	223,109	219,799
Total liabilities	3,344,572	3,398,958
Redeemable preferred equity – DDR	400,203	395,156
Accumulated equity	827,381	957,968
Total liabilities and equity	$ 4,572,156	$ 4,752,082