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Investments in and Advances to Joint Ventures - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended	4 Months Ended	12 Months Ended
	Apr. 28, 2014 USD ($) ShoppingCenter	Mar. 31, 2015 USD ($) Assets	Dec. 31, 2015 USD ($) Assets	Apr. 28, 2014 ShoppingCenter BRL / $	Dec. 31, 2015 USD ($) Transaction JointVenture	Dec. 31, 2014 USD ($) Transaction JointVenture ShoppingCenter	Dec. 31, 2013 USD ($) ShoppingCenter BRL / $
Schedule Of Equity Method Investments [Line Items]
Number of transactions | Transaction					1	1
Number of joint ventures | JointVenture					1	1
Ownership interest of joint venture partner						95.00%
Gain (loss) on change in control of interests					$ 7,772	$ 87,996	$ 19,906
Number of properties sold | Assets			2
Acquisition purchase price gross			$ 112,300
Gain on sale of properties			$ 59,800		167,571	99,069	$ 11,741
Parent Company [Member]
Schedule Of Equity Method Investments [Line Items]
Investment interest percentage				33.00%
Gain on Sale of Interests						83,700
Gain on sale and change in control of interests						$ 19,700
Sonae Sierra Brazil [Member]
Schedule Of Equity Method Investments [Line Items]
Shopping centers owned | ShoppingCenter	10			10
Weighted-average exchange rate used for recording the equity in net income | BRL / $				2.26			2.14
Property Management Company [Member]
Schedule Of Equity Method Investments [Line Items]
Gain (loss) on change in control of interests					$ (6,500)
Percentage of ownership interest transferred					50.00%
BRE DDR Retail Holdings IV [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest of joint venture partner					95.00%
Ownership interest in joint venture			5.00%		5.00%
Redemption of preferred equity in full at companys option					after seven years
Percentage of ownership interest transferred			5.00%		5.00%
BRE DDR Retail Holdings III [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest of joint venture partner						95.00%
Ownership interest in joint venture						5.00%
Redemption of preferred equity in full at companys option						after seven years
Percentage of ownership interest transferred			5.00%		5.00%
Coventry II Fund [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest of joint venture partner		80.00%
Gain (loss) on change in control of interests		$ 14,300
Percentage of ownership interest transferred		20.00%
Number of properties sold | Assets		21
SSB [Member]
Schedule Of Equity Method Investments [Line Items]
Percentage of ownership interest transferred	50.00%			50.00%
Proceeds from sale of unconsolidated joint venture assets	$ 343,600
Sonae Sierra Brasil Sa [Member]
Schedule Of Equity Method Investments [Line Items]
Ownership interest of joint venture partner	66.00%
Unconsolidated Joint Ventures [Member] | Shopping Center [Member]
Schedule Of Equity Method Investments [Line Items]
Number of properties sold | ShoppingCenter						37	27

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