Real Estate and Other Activities - Disposals - 2023 Activity Additional Information (Detail) $ in Millions, $ in Millions								1 Months Ended	3 Months Ended			12 Months Ended
	Sep. 18, 2024 USD ($)	Apr. 09, 2024 USD ($)	Oct. 10, 2023 AUD ($) Facility	May 18, 2023 AUD ($) Facility	Mar. 29, 2023 Facility	Mar. 08, 2023 USD ($)	Sep. 01, 2022 USD ($)	Oct. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($) Facility	Mar. 31, 2023 AUD ($) Facility	Dec. 31, 2024 USD ($) Facility	Dec. 31, 2022 USD ($) Facility
Debt Instrument [Line Items]
Number of facilities sold | Facility										3	3		15
Proceeds from sale of facilities													$ 522.0
Net impairment charge									$ 225.0	$ 79.0		$ 180.0
Straight-line rent receivables										37.4
Estimated fees to sell the hospitals										8.0
Deferred gains from our interest rate swap and foreign currency translation in AOCI										$ 16.0
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]										Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax
General Acute Care Facility [Member] | Australia [Member]
Debt Instrument [Line Items]
Number of facilities sold | Facility					11
Australia Transaction [Member]
Debt Instrument [Line Items]
Number of facilities sold | Facility				7
Proceeds from sale of facilities			$ 470	$ 730							$ 1,200
Number of remaining facilities sold | Facility			4
Steward Health Care System LLC [Member]
Debt Instrument [Line Items]
Proceeds from sale of facilities	$ 40.0							$ 47.0
Prime Healthcare Services, Inc. Facilities [Member]
Debt Instrument [Line Items]
Number of facilities sold | Facility												6
Proceeds from sale of facilities		$ 250.0					$ 366.0
Prime [Member]
Debt Instrument [Line Items]
Proceeds from sale of facilities						$ 100.0
Non-cash impairment charge										$ 11.0