Real Estate and Other Activities - Schedule of Concentrations of Credit Risk - (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024		Dec. 31, 2023
Business Combination [Line Items]
Total Assets		$ 15,001,775	$ 14,294,594
Total revenues		972,022	995,547		$ 871,799
Operator Concentration Risk [Member] | Total Gross Assets [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 15,001,775	$ 14,294,594
Percentage of concentration risk		100.00%	100.00%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Other Assets [Member]
Business Combination [Line Items]
Percentage of concentration risk		13.40%	11.80%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Circle [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 2,121,848	$ 2,026,778
Percentage of concentration risk		14.10%	14.20%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Priory [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 1,301,888	$ 1,233,462
Percentage of concentration risk		8.70%	8.60%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Healthcare Systems of America [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 1,200,996	$ 1,187,006
Percentage of concentration risk		8.00%	8.30%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Lifepoint Behavioral [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 809,492	$ 813,584
Percentage of concentration risk		5.40%	5.70%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Swiss Medical Network [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 873,703	$ 719,632
Percentage of concentration risk		5.80%	5.10%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Other Operators [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 6,688,287	$ 6,624,256
Percentage of concentration risk		44.60%	46.30%
Operator Concentration Risk [Member] | Total Gross Assets [Member] | Other Assets by Operator [Member]
Business Combination [Line Items]
Total Assets	[1]	$ 2,005,561	$ 1,689,876
Operator Concentration Risk [Member] | Revenue [Member] | Prospect [Member]
Business Combination [Line Items]
Percentage of concentration risk					12.30%
Total revenues					$ 107,557
Operator Concentration Risk [Member] | Revenue [Member] | Circle [Member]
Business Combination [Line Items]
Percentage of concentration risk		21.90%	20.70%		22.30%
Total revenues		$ 212,719	$ 205,582		$ 194,390
Operator Concentration Risk [Member] | Revenue [Member] | Priory [Member]
Business Combination [Line Items]
Percentage of concentration risk		10.90%	10.20%
Total revenues		$ 105,986	$ 101,675
Geographic Concentration Risk [Member] | Total Gross Assets [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 15,001,775	$ 14,294,594
Percentage of concentration risk	[2]	100.00%	100.00%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Texas [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 1,427,391	$ 1,394,296
Percentage of concentration risk	[2]	9.50%	9.80%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | California [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 977,890	$ 935,470
Percentage of concentration risk	[2]	6.50%	6.40%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Florida [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 834,940	$ 840,876
Percentage of concentration risk	[2]	5.60%	5.90%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Arizona [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 328,873	$ 379,801
Percentage of concentration risk	[2]	2.20%	2.70%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Ohio [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 330,189	$ 327,577
Percentage of concentration risk	[2]	2.20%	2.30%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | All Other States [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 2,480,182	$ 2,636,587
Percentage of concentration risk	[2]	16.50%	18.50%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Other Domestic Assets [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 1,072,900	$ 951,486
Percentage of concentration risk	[2]	7.20%	6.60%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Total U.S. [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 7,452,365	$ 7,466,093
Percentage of concentration risk	[2]	49.70%	52.20%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | U.K. [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 4,184,188	$ 3,985,672
Percentage of concentration risk	[2]	27.90%	27.90%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Switzerland [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 873,703	$ 719,632
Percentage of concentration risk	[2]	5.80%	5.00%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Germany [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 751,806	$ 672,343
Percentage of concentration risk	[2]	5.00%	4.70%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Spain [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 302,323	$ 247,996
Percentage of concentration risk	[2]	2.00%	1.70%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Finland [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 220,813	$ 199,721
Percentage of concentration risk	[2]	1.50%	1.40%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | All Other Countries [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 283,916	$ 264,747
Percentage of concentration risk	[2]	1.90%	1.90%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Other International Assets [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 932,661	$ 738,390
Percentage of concentration risk	[2]	6.20%	5.20%
Geographic Concentration Risk [Member] | Total Gross Assets [Member] | Total International [Member]
Business Combination [Line Items]
Total Assets	[2]	$ 7,549,410	$ 6,828,501
Percentage of concentration risk	[2]	50.30%	47.80%
Geographic Concentration Risk [Member] | Revenue [Member]
Business Combination [Line Items]
Percentage of concentration risk		100.00%	100.00%		100.00%
Total revenues		$ 972,022	$ 995,547		$ 871,799
Geographic Concentration Risk [Member] | Revenue [Member] | Total U.S. [Member]
Business Combination [Line Items]
Percentage of concentration risk		53.30%	56.40%		46.70%
Total revenues		$ 517,878	$ 561,673		$ 407,329
Geographic Concentration Risk [Member] | Revenue [Member] | U.K. [Member]
Business Combination [Line Items]
Percentage of concentration risk		38.40%	36.20%		40.40%
Total revenues		$ 373,279	$ 359,991		$ 352,594
Geographic Concentration Risk [Member] | Revenue [Member] | All Other Countries [Member]
Business Combination [Line Items]
Percentage of concentration risk		8.30%	7.40%		12.90%
Total revenues		$ 80,865	$ 73,883		$ 111,876
Customer Concentration Risk [Member] | Total Gross Assets [Member]
Business Combination [Line Items]
Total Assets		$ 15,001,775	$ 14,294,594	[2]
Percentage of concentration risk	[2]	100.00%	100.00%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | Other Assets [Member]
Business Combination [Line Items]
Percentage of concentration risk	[2]	13.40%	11.80%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | General Acute Care Hospitals [Member]
Business Combination [Line Items]
Total Assets		$ 8,769,909	$ 8,493,331	[2]
Percentage of concentration risk	[2]	58.50%	59.40%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | Behavioral Health Facilities [Member]
Business Combination [Line Items]
Total Assets		$ 2,445,418	$ 2,376,460	[2]
Percentage of concentration risk	[2]	16.30%	16.70%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | Post acute care facilities [Member]
Business Combination [Line Items]
Total Assets		$ 1,671,616	$ 1,617,596	[2]
Percentage of concentration risk	[2]	11.10%	11.30%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | Freestanding E R Urgent Care Facilities [Member]
Business Combination [Line Items]
Total Assets		$ 109,271	$ 117,331	[2]
Percentage of concentration risk	[2]	0.70%	0.80%
Customer Concentration Risk [Member] | Total Gross Assets [Member] | Other Assets By Facility [Member]
Business Combination [Line Items]
Total Assets		$ 2,005,561	$ 1,689,876	[2]
Customer Concentration Risk [Member] | Revenue [Member]
Business Combination [Line Items]
Percentage of concentration risk		100.00%	100.00%		100.00%
Total revenues		$ 972,022	$ 995,547		$ 871,799
Customer Concentration Risk [Member] | Revenue [Member] | General Acute Care Hospitals [Member]
Business Combination [Line Items]
Percentage of concentration risk		60.30%	63.10%		62.20%
Total revenues		$ 586,648	$ 628,622		$ 541,888
Customer Concentration Risk [Member] | Revenue [Member] | Behavioral Health Facilities [Member]
Business Combination [Line Items]
Percentage of concentration risk		22.10%	21.10%		24.50%
Total revenues		$ 214,437	$ 209,668		$ 213,292
Customer Concentration Risk [Member] | Revenue [Member] | Post acute care facilities [Member]
Business Combination [Line Items]
Percentage of concentration risk		16.80%	14.00%		10.60%
Total revenues		$ 162,954	$ 139,859		$ 92,787
Customer Concentration Risk [Member] | Revenue [Member] | Freestanding E R Urgent Care Facilities [Member]
Business Combination [Line Items]
Percentage of concentration risk		0.80%	1.80%		2.70%
Total revenues		$ 7,983	$ 17,398		$ 23,832

[1] Total assets by operator are generally comprised of real estate assets, mortgage loans, investments in unconsolidated real estate joint ventures, investments in unconsolidated operating entities, and other loans.

[2] For geographic and facility type concentration metrics in the tables above, we allocate our investments in unconsolidated operating entities pro rata based on the gross book value of the real estate. Such pro rata allocations are subject to change from period to period.