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Organization, Formation and Structure (Details) | Jun. 30, 2018 partnership property
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Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Distribution of REIT taxable income (excluding net capital gains) to its stockholders (percent) | 90.00%
Number of partnerships | partnership | 2
Shopping Centers |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |
Number of real estate properties | 49
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 | 4

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