Real Estate and Other Activities - Disposals - 2024 Activity Additional Information (Detail) $ in Thousands, € in Millions								3 Months Ended					12 Months Ended
	Sep. 18, 2024 Facility	Aug. 14, 2024 USD ($) Freestanding	Jul. 23, 2024 USD ($) Bed Freestanding	Apr. 12, 2024 USD ($) Hospital	Apr. 09, 2024 USD ($) Property	May 01, 2023 USD ($)	Sep. 01, 2022 USD ($) Property	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2024 EUR (€)	Mar. 31, 2023 Facility	Dec. 31, 2024 USD ($) Facility	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) Facility
Debt Instrument [Line Items]
Investments in unconsolidated real estate joint ventures								$ 1,156,397					$ 1,156,397	$ 1,474,455
Revolving credit facility amount paid													701,809	988,162	$ 869,606
Number of facilities sold | Facility												3			15
Real estate held for sale								34,019					34,019	0
Proceeds from sale of facilities															$ 522,000
Gain (loss) on sale of real estate													478,693	$ (1,815)	536,755
Gain (loss) on real estate dispositions															$ 100,000
Idaho [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations								50,000
Five Prime Properties
Debt Instrument [Line Items]
Gain (loss) on real estate dispositions													23,000
Straight-line rent write-offs													30,000
Dignity health
Debt Instrument [Line Items]
Gain (loss) on real estate dispositions													65,000
Straight-line rent write-offs													20,000
UCHealth
Debt Instrument [Line Items]
Gain (loss) on real estate dispositions													24,000
Straight-line rent write-offs													16,000
Freestanding emergency departments | Dignity health
Debt Instrument [Line Items]
Number of facilities sold | Freestanding			7
Freestanding emergency departments | UCHealth
Debt Instrument [Line Items]
Number of facilities sold | Freestanding		11
General hospital and freestanding emergency departments
Debt Instrument [Line Items]
Gain (loss) on sale of real estate		$ 40,000	$ 85,000
Non-cash straight-line rent receivables		16,000	20,000
General hospital and freestanding emergency departments | Dignity health
Debt Instrument [Line Items]
Proceeds from sale of facilities			$ 160,000
General hospital and freestanding emergency departments | UCHealth
Debt Instrument [Line Items]
Proceeds from sale of facilities		$ 86,000
Arizona General Hospital | Dignity health
Debt Instrument [Line Items]
Number of bed sold | Bed			50
Space Coast Properties
Debt Instrument [Line Items]
Proceeds from sale of facilities								440,000
Space Coast Properties | Orlando Health
Debt Instrument [Line Items]
Gain (loss) on sale of real estate								2,000
Space Coast Properties | Florida | Orlando Health
Debt Instrument [Line Items]
Number of facilities sold | Facility	3
Watsonville Facility | Pajaro Valley Healthcare District Corporation
Debt Instrument [Line Items]
Proceeds from sale of facilities									$ 40,000
Gain (loss) on sale of real estate									$ 4,000
Institutional Asset Manager [Member]
Debt Instrument [Line Items]
Number of Utah hospitals sold | Hospital				5
Agreegate agreed valuation				$ 1,200,000
Percentage of interest sold in venture				75.00%
Percentage of interest retained in venture				25.00%
Investments in unconsolidated real estate joint ventures				$ 108,000
Proceeds from divestiture of interest in joint venture				886,000
Additional cash proceeds of non-recourse secured finance				190,000
Revolving credit facility amount paid				1,100,000
Gain (loss) on real estate dispositions				380,000									360,000
Write-off of unbilled straight-line rent receivables				20,000
Prime Healthcare Services, Inc. Facilities [Member]
Debt Instrument [Line Items]
Number of properties sold | Property					5		11
Profit (loss) from real estate operations													$ 14,000
Number of facilities sold | Facility													6
Number of ancillary facilities sold | Facility													2
Proceeds from sale of facilities					$ 250,000		$ 366,000
Gain (loss) on real estate dispositions					53,000
Proceeds from interest-bearing mortgage loan					100,000
Non-cash straight-line rent write-offs					30,000
Lease purchase option value					238,000
Lease purchase option price reverts					$ 260,000
Prime Healthcare Services, Inc. Facilities [Member] | Minimum [Member]
Debt Instrument [Line Items]
Inflation-based Percentage for Amended Lease					2.00%
Prime Healthcare Services, Inc. Facilities [Member] | Maximum [Member]
Debt Instrument [Line Items]
Inflation-based Percentage for Amended Lease					4.00%
Behavioral Health Hospitals [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations										$ 35,400
General Acute Care Facility [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations										$ 49,000	€ 46
CommonSpirit Health [Member]
Debt Instrument [Line Items]
Leased real estate acquire lease base				1,200,000
Derivative liability				$ 2,300
Straight-line rent write-offs						$ 95,000							$ 20,000
Amortization of Intangible Assets						$ 286,000
Steward Health Care System LLC [Member]
Debt Instrument [Line Items]
Bankruptcy claims amount settled								$ 395,000					$ 395,000