Real Estate Investments Business Acquisitions (Parenthetical) (Details) - a	Sep. 30, 2020	Sep. 30, 2019
Country Walk Plaza [Member]
Business Acquisition [Line Items]
Percentage of purchase price of property	100.00%
Percentage of equity interest acquired prior	30.00%
Pablo Plaza [Member]
Business Acquisition [Line Items]
Purchase of building for redevelopment		0.17