Real Estate and Other Activities - 2024 Activity - Additional Information (Detail) $ in Thousands, € in Millions		3 Months Ended			9 Months Ended
	Apr. 12, 2024 USD ($) Hospital	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2024 EUR (€)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Gain (loss) on real estate dispositions					$ 4,000
Investments in unconsolidated real estate joint ventures					1,379,600		$ 1,156,397
Payments of term debt					$ (2,252,731)	$ (662,968)
Behavioral Health Hospitals [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations		$ 10,500	$ 35,400
General Acute Care Facility [Member]
Debt Instrument [Line Items]
Profit (loss) from real estate operations			$ 49,000	€ 46
Common Spirit [Member]
Debt Instrument [Line Items]
Leased real estate acquire lease base	$ 1,200,000
Derivative liability	$ 2,300
Institutional Asset Manager [Member]
Debt Instrument [Line Items]
Number of utah hospitals sold | Hospital	5
Aggregate agreed valuation	$ 1,200,000
Gain (loss) on real estate dispositions	380,000
Write-off of unbilled straight-line rent receivables	$ 20,000
Percentage of interest retained in venture	25.00%
Investments in unconsolidated real estate joint ventures	$ 108,000
Percentage of interest sold in venture	75.00%
Proceeds from divestiture of interest in joint venture	$ 886,000
Additional cash proceeds of non-recourse secured finance	190,000
Payments of term debt	$ (1,100,000)