Leases- Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended
	May 09, 2023 USD ($) community	Mar. 31, 2023 USD ($) lease community	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Operating and financing leases, number of communities | community		295
Operating lease, number of communities | lease		246
Financing leases, number of communities | lease		49
Operating lease right-of-use assets | $		$ 565,641		$ 597,130
Subsequent Event | Mortgages
Lessee, Lease, Description [Line Items]
Operating lease, covenant provisions, required minimum tangible net worth | $	$ 2,000,000
Subsequent Event | Welltower Inc.
Lessee, Lease, Description [Line Items]
Number of communities Company continues to lease | community	74
Number of communities leased | community	69
Operating leases, maximum fund costs | $	$ 17,000
Operating lease right-of-use assets | $	125,000
Operating lease, covenant provisions, required minimum stockholders equity | $	400,000
Subsequent Event | Welltower Inc. | Mortgages
Lessee, Lease, Description [Line Items]
Operating lease, covenant provisions, required minimum tangible net worth | $	$ 1,500,000
Subsequent Event | Welltower Inc. | Lease Expire From December 31, 2026 Until June 30, 2032
Lessee, Lease, Description [Line Items]
Number of leases extended | community	1
Number of communities leased | community	39
Subsequent Event | Welltower Inc. | Lease Expire On June 30, 2032
Lessee, Lease, Description [Line Items]
Number of communities leased | community	69
Subsequent Event | Welltower Inc. | Lease Expire On December 31, 2024
Lessee, Lease, Description [Line Items]
Number of communities leased | community	5
Subsequent Event | Welltower Inc. | Minimum Rent Leasing Arrangement | SOFR
Lessee, Lease, Description [Line Items]
Annual escalator rate	4.00%
CARES Act
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets | $			$ 8,600
Minimum
Lessee, Lease, Description [Line Items]
Finance and operating lease, renewal term		5 years
Minimum | Subsequent Event | Welltower Inc. | Minimum Rent Leasing Arrangement | SOFR
Lessee, Lease, Description [Line Items]
Annual escalator rate	3.00%
Maximum
Lessee, Lease, Description [Line Items]
Finance and operating lease, renewal term		20 years