Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lessee, Lease, Description [Line Items]
Straight line rent adjustment			$ 12,610
Rental and other revenues related to operating lease payments	$ 384,507	$ 361,983	1,152,005	$ 1,079,784
Rental and other revenues related to operating lease payments, variable leases			163,980	145,541
Seniors Housing Operating
Lessee, Lease, Description [Line Items]
Rental and other revenues related to operating lease payments			$ 341,172	$ 304,338
Minimum
Lessee, Lease, Description [Line Items]
Lease term extension period			1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term extension period			25 years