Revenue - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Monthly resident fees	$ 39.8		$ 38.9
Revenue recognized	48.3	$ 61.7
Facility expense, allowance for credit loss	4.0	$ 3.5
Deferred Revenue and Credits
Disaggregation of Revenue [Line Items]
Contract with customer, liability	$ 72.1		$ 72.5