Leases - Narrative (Details)		3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2024 property lease	Dec. 31, 2024 USD ($) lease property	Sep. 30, 2024 USD ($) lease	Dec. 31, 2025 property	Dec. 31, 2024 USD ($) lease	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Pricing period					30 years
Straight line rent receivables					$ 139,652,000	$ 16,642,000
Gain (loss) on real estate dispositions and acquisitions of controlling interests, net					451,611,000	67,898,000	$ 16,043,000
Sales-type lease income						0	0
Cash proceeds from real estate dispositions					336,525,000	96,741,000	199,496,000
Resident fees and services					6,027,149,000	4,753,804,000	4,173,711,000
Future payments to be received		$ 174,560,000			$ 174,560,000
Sales-Type Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]					Interest income
15 Properties Disposed
Lessee, Lease, Description [Line Items]
Number of properties sold | property	15
Number of operating leases | lease	2		2
Number of sales-type leases | lease		2			2
Gain (loss) on real estate dispositions and acquisitions of controlling interests, net			$ 92,593,000		$ 92,593,000
Sales-type lease income					8,167,000
15 Properties Disposed | Forecast
Lessee, Lease, Description [Line Items]
Number of properties held for sale | property				4
11 Properties Disposed
Lessee, Lease, Description [Line Items]
Number of properties sold | property		11
Number of sales-type leases | lease	1		1
Cash proceeds from real estate dispositions		$ 101,614,000
Seniors Housing Operating
Lessee, Lease, Description [Line Items]
Resident fees and services					$ 587,224,000	$ 466,162,000	$ 410,749,000
Minimum
Lessee, Lease, Description [Line Items]
Lease term extension period					1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term extension period					25 years