Debt - Mortgage Debt (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2026 USD ($) facility	Dec. 31, 2023 USD ($) loan	Dec. 31, 2025 USD ($) facility derivative_held	Dec. 31, 2024 USD ($) facility	Dec. 31, 2023 USD ($)	Dec. 31, 2026 community	Aug. 31, 2022 derivative_held	Apr. 30, 2022 derivative_held
Debt Instrument [Line Items]
Principal balance on debt			$ 9,977,466
Interest rate swap instruments | Designated as Hedging Instrument
Debt Instrument [Line Items]
Number of interest-rate contracts held | derivative_held			2				2
Interest rate swap instruments | Cash Flow Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Number of interest-rate contracts held | derivative_held								2
Outpatient Medical Buildings | Mortgage Debt
Debt Instrument [Line Items]
Property count | facility			1	1
Debt instrument, periodic payment, principal			$ 4,000	$ 23,000
Outpatient Medical Buildings | Mortgage Debt | Subsequent Event
Debt Instrument [Line Items]
Property count | facility	13
Face amount	$ 142,000
Life Plan Community | Mortgage Debt
Debt Instrument [Line Items]
Face amount		$ 85,000			$ 85,000
Number of loans | loan		1
Life Plan Community | Mortgage Debt | Subsequent Event
Debt Instrument [Line Items]
Property count | community						2
Debt instrument, periodic payment, principal	$ 103,000
Mortgage Debt
Debt Instrument [Line Items]
Principal balance on debt			348,616	356,000
Debt instrument, collateral, healthcare facilities carrying value			747,000	770,000
Debt instrument, periodic payment, principal			$ 7,000	$ 27,000	$ 90,000
Mortgage Debt | Outpatient Medical Buildings
Debt Instrument [Line Items]
Property count | facility			18,000	19
Mortgage Debt | Life Plan Community
Debt Instrument [Line Items]
Property count | facility			2	2