Summary Of Significant Accounting Policies Impacts of COVID-19 Pandemic (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue Recognition and Accounts Receivable [Abstract]
Collectibility adjustment (increase) decrease in revenue	$ (1.9)	$ 6.4	$ (2.0)	$ 21.2
Percentage of tenants with revenue recognized on a cash basis	33.00%		33.00%
Rent deferred	$ 47.0		$ 47.0
Previously deferred rent, amount collected	$ 32.0		$ 32.0