COVID-19 Pandemic - Narrative (Details) - COVID-19	6 Months Ended
	Jun. 30, 2021
Unusual or Infrequent Item, or Both [Line Items]
Rent collected, percent	97.00%
Office
Unusual or Infrequent Item, or Both [Line Items]
Rent collected, percent	100.00%
Retail
Unusual or Infrequent Item, or Both [Line Items]
Rent collected, percent	93.00%
Residential
Unusual or Infrequent Item, or Both [Line Items]
Rent collected, percent	98.00%