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GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill by Segments (Details)
$ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
Goodwill  
Goodwill, beginning balance $ 9,142
Acquisitions 398
Goodwill, ending balance 9,540
Insurance  
Goodwill  
Goodwill, beginning balance 2,472
Acquisitions 191
Goodwill, ending balance 2,663
CenterWell  
Goodwill  
Goodwill, beginning balance 6,670
Acquisitions 207
Goodwill, ending balance $ 6,877