Real Estate and Other Activities - Watsonville Community Hospital - Additional Information (Detail) - USD ($) $ in Thousands			12 Months Ended
		Sep. 30, 2019	Dec. 31, 2022	Aug. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Loans repaid	[1]				$ 1,103,410	$ 834,743
Halsen Healthcare [Member]
Business Acquisition [Line Items]
Credit loss reserve			$ 40,000
Halsen Healthcare [Member] | Maximum [Member]
Business Acquisition [Line Items]
Write off of billed and straight-line rent receivables			2,500
Watsonville, California [Member]
Business Acquisition [Line Items]
Provision (recovery) for credit loss			15,000
Watsonville, California [Member] | Halsen Healthcare [Member]
Business Acquisition [Line Items]
Loans repaid				$ 32,000
Provision (recovery) for credit loss			$ 15,000
Acute Care Hospital [Member] | Watsonville, California [Member]
Business Acquisition [Line Items]
Funded for interim mortgage loan		$ 40,000

[1] The 2021 column includes an £800 million mortgage loan advanced to the Priory Group (“Priory”) in the first quarter of 2021 and converted to fee simple ownership of 35 properties in the second quarter of 2021 as described below. The 2020 column includes approximately $740 million of loans advanced to Steward in 2017 and exchanged for the fee simple real estate of two hospitals as described below, as well as approximately $100 million of loans advanced to Ernest Health, Inc. (“Ernest”) in 2012 and exchanged for the fee simple real estate of four hospitals as described below.