Real Estate and Other Activities - Summary of Investments in Unconsolidated Operating Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	$ 1,455,842	$ 1,289,434
Steward Loan [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	363,236	360,164
International Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	231,403	219,387
Springstone [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	192,958	187,450
Priory [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	167,478	42,315
Swiss Medical Network [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	157,431	159,208
Steward Equity Interest [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	112,319	112,283
Aevis Victoria SA [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	76,029	61,271
Aspris Children's Services [Member]
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated operating entities	$ 15,988	$ 8,356