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BASIS OF PRESENTATION - Description of Business and Basis of Presentation (Details) $ in Millions		6 Months Ended
	Jan. 27, 2026 USD ($)	Jun. 30, 2026	Jun. 30, 2026 hospital	Jun. 30, 2026 healthcare_facility	Dec. 31, 2025
Business Combination [Line Items]
NumberOfReportableSegmentsDisclosedByDefinitionFlag		segments
Conifer Health Solutions, LLC \| CommonSpirit
Business Combination [Line Items]
Ownership percentage of subsidiary					76.20%
Catholic Health Initiatives \| CommonSpirit
Business Combination [Line Items]
Ownership percentage of subsidiary					23.80%
Catholic Health Initiatives \| Conifer Health Solutions, LLC
Business Combination [Line Items]
Revenue cycle management services agreement amount to be received \| $	$ 1,900
Revenue cycle management services agreement period for early termination payments	3 years
Amount received \| $	$ 540
Payments for redemption \| $	$ 540
Hospital Operations
Business Combination [Line Items]
Number of acute care and specialty hospitals operated \| hospital			50
Number of outpatient facilities operated \| healthcare_facility				135
Ambulatory Care \| United Surgical Partners International
Business Combination [Line Items]
Number of ambulatory surgery centers \| hospital			538
Number of surgical hospitals operated by subsidiaries \| hospital			26
Number of outpatient centers recorded using equity method			151	151