Investments in and Advances to Joint Ventures - Condensed Combined Financial Information of Company's Unconsolidated Joint Venture Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Condensed Combined Balance Sheets
Land	$ 1,987,849	$ 1,990,406
Buildings	6,338,139	6,412,532
Fixtures and tenant improvements	738,741	735,685
Total real estate rental property	9,064,729	9,138,623
Less: Accumulated depreciation	(2,004,413)	(1,996,176)
Real estate rental property, net	7,060,316	7,142,447
Construction in progress and land	120,808	105,435
Total real estate assets, net	7,181,124	7,247,882
Other assets, net	282,724	285,410
Total assets	8,092,966	8,197,518
Mortgage debt	918,331	982,509
Total liabilities	4,965,719	4,951,506
Total liabilities and equity	8,092,966	8,197,518
Company's share of accumulated equity	106,819	97,977
Redeemable preferred equity, net	319,315	393,338
Basis differentials	(30,987)	(36,117)
Deferred development fees, net of portion related to the Company's interest	(2,813)	(2,651)
Amounts payable to the Company	3,028	1,584
Investments in and Advances to Joint Ventures, net	395,362	454,131
Unconsolidated Joint Ventures [Member]
Condensed Combined Balance Sheets
Land	1,268,425	1,287,675
Buildings	3,338,488	3,376,720
Fixtures and tenant improvements	205,412	203,824
Total real estate rental property	4,812,325	4,868,219
Less: Accumulated depreciation	(914,860)	(884,356)
Real estate rental property, net	3,897,465	3,983,863
Construction in progress and land	58,932	56,983
Total real estate assets, net	3,956,397	4,040,846
Cash and restricted cash	60,822	50,378
Receivables, net	43,931	50,685
Other assets, net	242,234	248,664
Total assets	4,303,384	4,390,573
Mortgage debt	2,898,615	3,034,399
Notes and accrued interest payable to the Company	3,028	1,584
Other liabilities	194,458	206,949
Total liabilities	3,096,101	3,242,932
Redeemable preferred equity – DDR	395,945	393,338
Accumulated equity	811,338	754,303
Total liabilities and equity	$ 4,303,384	$ 4,390,573