Real Estate Investments Acquired Finite-Lived Intangibles Acquired as Part of a Business Combination (Details) - Equity One Inc. [Member]	Mar. 01, 2017
Leases, Acquired-in-Place [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years 9 months 18 days
Above Market Leases [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years 9 months 18 days
Below Market Ground Rent Lease [Member] [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	55 years 3 months 18 days