Real Estate and Other Activities - Disposals - Additional Information (Detail) $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 14, 2022 USD ($) Facility	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) Property Facility	Dec. 31, 2021 USD ($) Facility	Dec. 31, 2020 USD ($) Facility Hospital Property
Business Acquisition [Line Items]
Number of facilities sold | Facility			15	16	9
Number of properties sold | Property					6
Proceeds from sale of facilities		$ 54,500	$ 522,000	$ 246,000	$ 94
Number of ancillary properties sold | Facility			5
Gain (loss) on real estate dispositions		$ (40,000)		$ 52,500	$ (2,800)
Straight-line rent write-offs			$ 42
Steward Health Care System LLC [Member]
Business Acquisition [Line Items]
Number of facilities acquired | Hospital					2
Massachusetts-based General Acute Care Hospitals [Member]
Business Acquisition [Line Items]
Number of facilities acquired | Facility	8
Purchase price of acquisition	$ 1,700,000
Gain (loss) on real estate dispositions	$ 600,000
Proceeds from expected secured debt			$ 1,300,000
Prime Healthcare Services, Inc. Facilities [Member]
Business Acquisition [Line Items]
Number of properties sold | Property			11
Proceeds from sale of facilities			$ 366,000
Prime [Member]
Business Acquisition [Line Items]
Gain (loss) on real estate dispositions			$ 100,000