Real Estate and Other Activities - Schedule of Concentrations of Credit Risk (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Business Acquisition [Line Items]
Total Assets	$ 19,650,157		$ 19,658,000
Total Revenues	350,211	$ 409,800
Total Gross Assets [Member] | Operator Concentration Risk [Member]
Business Acquisition [Line Items]
Total Assets	$ 19,650,157		$ 19,658,000
Percentage of concentration risk	100.00%		100.00%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Other Assets [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,709,392		$ 1,611,159
Percentage of concentration risk	8.70%		8.20%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Steward [Member]
Business Acquisition [Line Items]
Total Assets	$ 4,800,594		$ 4,762,673
Percentage of concentration risk	24.40%		24.20%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Circle [Member]
Business Acquisition [Line Items]
Total Assets	$ 2,092,822		$ 2,062,474
Percentage of concentration risk	10.70%		10.50%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Prospect [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,533,412		$ 1,483,599
Percentage of concentration risk	7.80%		7.50%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Priory [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,310,968		$ 1,290,213
Percentage of concentration risk	6.70%		6.60%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Springstone [Member]
Business Acquisition [Line Items]
Total Assets	$ 796,248		$ 985,959
Percentage of concentration risk	4.00%		5.00%
Total Gross Assets [Member] | Operator Concentration Risk [Member] | Other Operators [Member]
Business Acquisition [Line Items]
Total Assets	$ 7,406,721		$ 7,461,923
Percentage of concentration risk	37.70%		38.00%
Total Gross Assets [Member] | Geographic Concentration [Member]
Business Acquisition [Line Items]
Total Assets	$ 19,650,157		$ 19,658,000
Percentage of concentration risk	100.00%		100.00%
Total Gross Assets [Member] | Geographic Concentration [Member] | Texas [Member]
Business Acquisition [Line Items]
Total Assets	$ 2,008,146		$ 1,967,948
Percentage of concentration risk	10.20%		10.00%
Total Gross Assets [Member] | Geographic Concentration [Member] | California [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,502,060		$ 1,450,112
Percentage of concentration risk	7.70%		7.40%
Total Gross Assets [Member] | Geographic Concentration [Member] | Florida [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,319,878		$ 1,324,555
Percentage of concentration risk	6.70%		6.80%
Total Gross Assets [Member] | Geographic Concentration [Member] | Utah [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,218,883		$ 1,224,484
Percentage of concentration risk	6.20%		6.20%
Total Gross Assets [Member] | Geographic Concentration [Member] | Massachusetts [Member]
Business Acquisition [Line Items]
Total Assets	$ 763,555		$ 761,694
Percentage of concentration risk	3.90%		3.90%
Total Gross Assets [Member] | Geographic Concentration [Member] | All Other States [Member]
Business Acquisition [Line Items]
Total Assets	$ 4,035,762		$ 4,245,306
Percentage of concentration risk	20.50%		21.60%
Total Gross Assets [Member] | Geographic Concentration [Member] | Total U.S. [Member]
Business Acquisition [Line Items]
Total Assets	$ 11,935,420		$ 12,003,045
Percentage of concentration risk	60.70%		61.10%
Total Gross Assets [Member] | Geographic Concentration [Member] | United Kingdom [Member]
Business Acquisition [Line Items]
Total Assets	$ 4,145,170		$ 4,083,244
Percentage of concentration risk	21.10%		20.80%
Total Gross Assets [Member] | Geographic Concentration [Member] | Australia [Member]
Business Acquisition [Line Items]
Total Assets	$ 781,585		$ 854,582
Percentage of concentration risk	4.00%		4.30%
Total Gross Assets [Member] | Geographic Concentration [Member] | Switzerland [Member]
Business Acquisition [Line Items]
Total Assets	$ 763,711		$ 748,947
Percentage of concentration risk	3.90%		3.80%
Total Gross Assets [Member] | Geographic Concentration [Member] | Germany [Member]
Business Acquisition [Line Items]
Total Assets	$ 666,930		$ 664,900
Percentage of concentration risk	3.40%		3.40%
Total Gross Assets [Member] | Geographic Concentration [Member] | Spain [Member]
Business Acquisition [Line Items]
Total Assets	$ 226,800		$ 222,316
Percentage of concentration risk	1.10%		1.10%
Total Gross Assets [Member] | Geographic Concentration [Member] | All Other Countries [Member]
Business Acquisition [Line Items]
Total Assets	$ 508,285		$ 498,753
Percentage of concentration risk	2.60%		2.50%
Total Gross Assets [Member] | Geographic Concentration [Member] | Total International [Member]
Business Acquisition [Line Items]
Total Assets	$ 7,714,737		$ 7,654,955
Percentage of concentration risk	39.30%		38.90%
Total Gross Assets [Member] | Geographic Concentration [Member] | Other Domestic Assets [Member]
Business Acquisition [Line Items]
Total Assets	$ 1,087,136		$ 1,028,946
Percentage of concentration risk	5.50%		5.20%
Total Gross Assets [Member] | Geographic Concentration [Member] | Other International Assets [Member]
Business Acquisition [Line Items]
Total Assets	$ 622,256		$ 582,213
Percentage of concentration risk	3.20%		3.00%
Revenue [Member] | Operator Concentration Risk [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	100.00%	100.00%
Total Revenues	$ 350,211	$ 409,800
Revenue [Member] | Operator Concentration Risk [Member] | Steward [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	29.60%	29.60%
Total Revenues	$ 103,494	$ 121,244
Revenue [Member] | Operator Concentration Risk [Member] | Circle [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	13.50%	12.50%
Total Revenues	$ 47,415	$ 51,212
Revenue [Member] | Operator Concentration Risk [Member] | Prospect [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	0.00%	9.40%
Total Revenues		$ 38,684
Revenue [Member] | Operator Concentration Risk [Member] | Priory [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	7.10%	4.70%
Total Revenues	$ 24,740	$ 19,070
Revenue [Member] | Operator Concentration Risk [Member] | Springstone [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	5.80%	5.30%
Total Revenues	$ 20,167	$ 21,664
Revenue [Member] | Operator Concentration Risk [Member] | Other Operators [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	44.00%	38.50%
Total Revenues	$ 154,395	$ 157,926
Revenue [Member] | Geographic Concentration [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	100.00%	100.00%
Total Revenues	$ 350,211	$ 409,800
Revenue [Member] | Geographic Concentration [Member] | Texas [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	12.60%	8.50%
Total Revenues	$ 44,116	$ 34,844
Revenue [Member] | Geographic Concentration [Member] | California [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	5.60%	10.10%
Total Revenues	$ 19,495	$ 41,291
Revenue [Member] | Geographic Concentration [Member] | Florida [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	7.50%	6.20%
Total Revenues	$ 26,182	$ 25,305
Revenue [Member] | Geographic Concentration [Member] | Utah [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	10.20%	8.20%
Total Revenues	$ 35,641	$ 33,768
Revenue [Member] | Geographic Concentration [Member] | Massachusetts [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	1.80%	8.00%
Total Revenues	$ 6,816	$ 32,631
Revenue [Member] | Geographic Concentration [Member] | All Other States [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	28.40%	30.70%
Total Revenues	$ 99,137	$ 125,907
Revenue [Member] | Geographic Concentration [Member] | Total U.S. [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	66.10%	71.70%
Total Revenues	$ 231,387	$ 293,746
Revenue [Member] | Geographic Concentration [Member] | United Kingdom [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	24.00%	20.50%
Total Revenues	$ 84,206	$ 83,906
Revenue [Member] | Geographic Concentration [Member] | Australia [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	4.40%	4.10%
Total Revenues	$ 15,237	$ 17,031
Revenue [Member] | Geographic Concentration [Member] | All Other Countries [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	5.50%	3.70%
Total Revenues	$ 19,381	$ 15,117
Revenue [Member] | Geographic Concentration [Member] | Total International [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	33.90%	28.30%
Total Revenues	$ 118,824	$ 116,054
Revenue [Member] | Customer Concentration Risk [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	100.00%	100.00%
Total Revenues	$ 350,211	$ 409,800
Revenue [Member] | Customer Concentration Risk [Member] | General Acute Care Hospitals [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	72.30%	77.00%
Total Revenues	$ 253,036	$ 316,019
Revenue [Member] | Customer Concentration Risk [Member] | Behavioral Health Facilities [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	15.30%	12.40%
Total Revenues	$ 53,658	$ 50,897
Revenue [Member] | Customer Concentration Risk [Member] | Inpatient Rehabilitation Facilities [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	8.30%	7.10%
Total Revenues	$ 29,046	$ 28,906
Revenue [Member] | Customer Concentration Risk [Member] | Long Term Acute Care Hospital [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	2.40%	2.10%
Total Revenues	$ 8,251	$ 8,302
Revenue [Member] | Customer Concentration Risk [Member] | Freestanding ER/Urgent Care Facilities [Member]
Business Acquisition [Line Items]
Percentage of concentration risk	1.70%	1.40%
Total Revenues	$ 6,220	$ 5,676
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	3.00%