Leases- Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	May 09, 2023 USD ($) community lease	Jun. 30, 2023 USD ($) lease community	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) lease community	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Operating and financing leases, number of communities | community		295		295
Operating lease, number of communities | lease		281		281
Financing leases, number of communities | lease		14		14
Operating lease expense		$ 4,800		$ 4,800
Operating lease right-of-use assets		708,124		708,124		$ 597,130
Mortgages
Lessee, Lease, Description [Line Items]
Operating lease, covenant provisions, required minimum tangible net worth	$ 2,000,000
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		$ 122,300		$ 122,300
Operating lease, covenant provisions, required minimum stockholders equity	400,000
Welltower Inc. | Revision of Prior Period, Reclassification, Adjustment
Lessee, Lease, Description [Line Items]
Number of communities leased | community				35
Lease, cost				$ 19,300
Welltower Inc. | Mortgages
Lessee, Lease, Description [Line Items]
Operating lease, covenant provisions, required minimum tangible net worth	$ 1,500,000
Welltower Inc. | Lease Expire From December 31, 2026 Until June 30, 2032
Lessee, Lease, Description [Line Items]
Number of leases extended | lease	1
Number of communities leased | community	39
Welltower Inc. | Lease Expire On June 30, 2032
Lessee, Lease, Description [Line Items]
Number of communities leased | community	69
Welltower Inc. | Lease Expire On December 31, 2024
Lessee, Lease, Description [Line Items]
Number of communities leased | community	5
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			$ 1,000		$ 9,600
Minimum
Lessee, Lease, Description [Line Items]
Finance and operating lease, renewal term				5 years
Minimum | 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