Leases (Details) $ in Millions	3 Months Ended		9 Months Ended
Leases (Details) $ in Millions	Sep. 30, 2022 USD ($) community lease	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) community lease	Sep. 30, 2021 USD ($)	Oct. 31, 2022 community
Lessee, Lease, Description [Line Items]
Operating and financing leases, number of communities \| community	295		295
Operating lease, number of communities \| lease	230		230
Financing leases, number of communities \| lease	65		65
Subsequent Event
Lessee, Lease, Description [Line Items]
Operating and financing leases, number of communities \| community					24
CARES Act
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets \| $	$ 1.9	$ 0.0	$ 11.5	$ 10.5
Minimum
Lessee, Lease, Description [Line Items]
Finance and operating lease, renewal term			5 years
Maximum
Lessee, Lease, Description [Line Items]
Finance and operating lease, renewal term			20 years