Investments in Real Estate- Gain on Sales of Real Estate (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) property	Jun. 30, 2022 USD ($) property	Jun. 30, 2023 USD ($) property	Jun. 30, 2022 USD ($) property
Properties sold during the period
Number of properties | property	29	70	55	104
Net sales proceeds	$ 31.9	$ 150.0	$ 60.5	$ 272.2
Gain on sales of real estate	$ 7.8	$ 40.6	$ 12.1	$ 50.7