Real Estate and Other Activities - Concentration of Credit Risks and Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related Party Transactions [Member]
Business Acquisition [Line Items]
Lease and interest revenue earned from tenants	$ 135.5	$ 63.9	$ 29.8
Total Gross Assets [Member] | Geographic Concentration [Member] | U.S. [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	61.00%	64.00%
Total Gross Assets [Member] | Geographic Concentration [Member] | Europe [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	33.00%	30.00%
Total Gross Assets [Member] | Geographic Concentration [Member] | Australia [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	5.00%	5.00%
Total Gross Assets [Member] | Geographic Concentration [Member] | South America [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	1.00%	1.00%
Revenue [Member] | Customer Concentration Risk [Member] | General Acute Care Hospital And Healthcare System
Business Acquisition [Line Items]
Percentage of concentration risk	76.00%	81.00%
Revenue [Member] | Customer Concentration Risk [Member] | Behavioral health facilities
Business Acquisition [Line Items]
Percentage of concentration risk		8.00%
Revenue [Member] | Customer Concentration Risk [Member] | Rehabilitation Hospital
Business Acquisition [Line Items]
Percentage of concentration risk	13.00%	7.00%
Revenue [Member] | Customer Concentration Risk [Member] | Freestanding ER/Urgent Care Facilities and Behavioral Health Facilities [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	4.00%
Revenue [Member] | Customer Concentration Risk [Member] | Long Term Acute Care Hospital
Business Acquisition [Line Items]
Percentage of concentration risk	7.00%
Revenue [Member] | Customer Concentration Risk [Member] | Maximum [Member] | Freestanding ER/Urgent Care and Long-Term Acute Care Facilities [Member]
Business Acquisition [Line Items]
Percentage of concentration risk		4.00%
Revenue [Member] | Operator Concentration Risk [Member] | Steward Health Care System LLC [Member] | Minimum [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	10.00%
Revenue [Member] | Operator Concentration Risk [Member] | Circle [Member] | Minimum [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	10.00%
Revenue [Member] | Operator Concentration Risk [Member] | Prospect [Member] | Minimum [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	10.00%
Pro Forma [Member] | Total Gross Assets [Member] | Customer Concentration Risk [Member]
Business Acquisition [Line Items]
Maximum percentage of entity's assets invested on single property	2.70%	2.70%