Acquisitions and Dispositions (Summary of Significant Assumptions Utilized in Estimates) (Details)	Mar. 31, 2021 $ / sqft
Industrial Property | Minimum [Member]
Property, Plant and Equipment [Line Items]
Net rental rate per square foot	6.62
Industrial Property | Maximum [Member]
Property, Plant and Equipment [Line Items]
Net rental rate per square foot	12.58
Measurement Input, Cap Rate | Minimum [Member]
Property, Plant and Equipment [Line Items]
Exit capitalization rate	4.50%
Measurement Input, Cap Rate | Maximum [Member]
Property, Plant and Equipment [Line Items]
Exit capitalization rate	5.00%