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Organization and Principles of Consolidation (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($) retail_shopping_center
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Document Period End Date | Sep. 30, 2019
Unsecured public and private notes | $ | $ 500
Operating Partnership [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Ownership percentage of outstanding common partnership units | 99.60%
Wholly Owned Properties [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Number of Real Estate Properties | 305
Unconsolidated Properties [Member] |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |
Number of Real Estate Properties | 117

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