Real Estate and Other Activities - Steward Rent Collections - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2024
Business Combination [Line Items]
Received rent	$ 5		$ 38
Steward Health Care System LLC [Member]
Business Combination [Line Items]
Rent and interest revenue		$ 10	40
Massachusetts-Based Steward [Member]
Business Combination [Line Items]
Received rent	$ 10		$ 76