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Organization, Formation and Structure - Additional Information (Details) - Jun. 30, 2015	partnership property
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Distribution of REIT taxable income (excluding net capital gains) to its stockholders	90.00%
Number of partnerships | partnership	2
Shopping Centers
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	50
Mixed-Use Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	6
Non-operating Development Properties
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of real estate properties	3

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- Definition

Minimum Percentage of Taxable Income Distribution to Shareholders

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- Definition

Number of Partnerships

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- Definition

Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]

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- Definition

The number of real estate properties owned as of the balance sheet date.

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