Other Assets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred leasing and other contract costs	$ 62.9	$ 53.2
Prepaid expenses	22.8	22.1
Non-real estate assets, net	16.5	16.3
Derivative assets	0.6	3.5
Other assets	19.1	18.8
Total	$ 121.9	$ 113.9