Revenues (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Revenues [Abstract]
Reduction of net income due to recording of revenue on cash basis and write off outstanding straight-line receivable	$ 0.0	$ 0.0
Unpaid billed charges of rent and tenant reimbursements	0.4	0.8
Unrecorded revenue from tenants	$ 0.4	$ 0.8