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BASIS OF PRESENTATION (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Nov. 01, 2024
Sep. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Hurricane        
Disclosure Basis Of Presentation Details [Line Items]        
Hurricane Helene costs   $ 25    
Tangible asset write-off   44    
Insurance receivable   $ 19    
Subsequent Event | Hurricane        
Disclosure Basis Of Presentation Details [Line Items]        
Insurance recoveries $ 101      
Discontinued Operations, Disposed of by Sale | Kidney Care | Forecast        
Disclosure Basis Of Presentation Details [Line Items]        
Agreed purchase price       $ 3,800
Discontinued Operations, Held-for-Sale | Kidney Care | Forecast        
Disclosure Basis Of Presentation Details [Line Items]        
Proceeds from divestiture of businesses     $ 3,500  
Discontinued Operations, Held-for-Sale | Kidney Care | Forecast | Minimum        
Disclosure Basis Of Presentation Details [Line Items]        
Proceeds from divestiture of businesses, net of tax     3,150  
Discontinued Operations, Held-for-Sale | Kidney Care | Forecast | Maximum        
Disclosure Basis Of Presentation Details [Line Items]        
Proceeds from divestiture of businesses, net of tax     $ 3,250