Leases - Additional Information (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($) community lease	Dec. 31, 2022 lease community
Lessee, Lease, Description [Line Items]
Number of communities leased	295	295
Number of operating communities leased | lease	246	246
Number of financing communities leased | lease	49	49
Operating lease, weighted average remaining lease term	5 years 2 months 12 days	5 years 2 months 12 days
Finance lease, weighted average remaining lease term	3 years 7 months 6 days	3 years 7 months 6 days
Operating lease, weighted average discount rate	7.60%	7.60%
Finance lease, weighted average discount rate	8.30%	8.30%
Operating leases, number of communities continues to lease	24
Operating leases, number of communities, failed sale-leaseback transactions	16
Noncash or part noncash, gain (loss) on sale of assets | $	$ 73.9
Operating lease, cost | $	$ 22.2
Minimum
Lessee, Lease, Description [Line Items]
Renewal term		5 years
Maximum
Lessee, Lease, Description [Line Items]
Renewal term		20 years