Intangibles - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 7.0	$ 25.0
Weighted average remaining amortization period in years	6 years	5 years
Weighted average remaining amortization period in years	8 years	8 years
Brookedale MTCA
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 44.0	$ 352.0
Intangible liabilities acquired	$ 6.0	$ 83.0
Weighted average remaining amortization period in years	9 years	7 years
Weighted average remaining amortization period in years	7 years	9 years