Acquisitions and Dispositions (Summary of Significant Assumptions Utilized in Estimates) (Details)	Jun. 30, 2021 $ / sqft $ / a
Industrial Property | Minimum [Member]
Property, Plant and Equipment [Line Items]
Annual net rental rate per square foot on acquired buildings | $ / sqft	6.62
Fair Value Measurement, Annual Net rental rate per acre on acquired ground lease | $ / a	182,136
Industrial Property | Maximum [Member]
Property, Plant and Equipment [Line Items]
Annual net rental rate per square foot on acquired buildings | $ / sqft	12.58
Fair Value Measurement, Annual Net rental rate per acre on acquired ground lease | $ / a	182,136
Measurement Input, Cap Rate | Minimum [Member]
Property, Plant and Equipment [Line Items]
Exit capitalization rate	3.50%
Measurement Input, Cap Rate | Maximum [Member]
Property, Plant and Equipment [Line Items]
Exit capitalization rate	5.00%