v3.26.1
BUSINESS ACQUISITIONS (Details) - USD ($)
$ in Millions
1 Months Ended
Jan. 31, 2026
Mar. 31, 2026
Dec. 31, 2025
Business Combination [Line Items]      
Goodwill   $ 9,120 $ 8,945
Corewell Health Venture      
Business Combination [Line Items]      
Percentage of interests acquired 51.00%    
Cash paid for business acquisitions $ 38    
Goodwill 179    
Goodwill, expected tax deductible amount 22    
Operating lease assets 20    
Operating lease liabilities 20    
Deferred income tax liabilities 12    
Corewell Health Venture | Customer-related intangibles      
Business Combination [Line Items]      
Intangible assets $ 124    
Intangible assets, useful life 15 years    
Corewell Health Venture | Corewell Health      
Business Combination [Line Items]      
Percentage of interests acquired 49.00%    
Fair value of joint venture $ 253