Debt - Mortgage Debt (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($) derivative_held property facility	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) derivative_held property facility	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) facility	Mar. 31, 2025 facility	Aug. 31, 2022 derivative_held	Apr. 30, 2022 derivative_held
Debt Instrument
Long-term debt, gross	$ 10,150,059		$ 10,150,059
Loss on debt extinguishments	$ 0	$ 0	$ 403	$ 0
Interest rate swap instruments | Designated as Hedging Instrument
Debt Instrument
Number of interest-rate contracts held | derivative_held	2		2				2
Interest rate swap instruments | Cash Flow Hedging | Designated as Hedging Instrument
Debt Instrument
Number of interest-rate contracts held | derivative_held								2
Outpatient Medical Buildings | Secured Debt
Debt Instrument
Property count | facility	13		13			1
Debt instrument, periodic payment	$ 142,000		$ 142,000	4,000
Senior Housing Communities | Secured Debt
Debt Instrument
Property count | facility	2		2
Debt instrument, periodic payment			$ 102,000
Accrued interest and prepayment penalties			1,000
Secured Debt
Debt Instrument
Long-term debt, gross	$ 104,065		104,065		$ 349,000
Debt instrument, collateral, healthcare facilities carrying value	205,000		205,000		$ 747,000
Debt instrument, periodic payment	$ 142,000	$ 1,000	245,000	$ 6,000
Loss on debt extinguishments			$ 400
Secured Debt | Outpatient Medical Buildings
Debt Instrument
Property count	5		5		18
Secured Debt | Senior Housing Communities
Debt Instrument
Property count | facility					2