Real Estate and Other Activities - Summary of Investments in Unconsolidated Operating Entities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	$ 1,428,061	$ 1,289,434
Steward Loan Investment [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	362,825	360,164
International Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	231,402	219,387
Springstone [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	200,827	187,450
Priory [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	144,266	42,315
Swiss Medical Network [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	147,189	159,208
Steward Equity Investment [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	139,000	139,000
Prospect [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	112,774	112,283
Aevis Victoria SA [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	73,746	61,271
Aspris Children's Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	$ 16,032	$ 8,356