GOODWILL AND OTHER INTANGIBLE ASSETS - Goodwill by Segments (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill
Goodwill, beginning balance	$ 9,550
Acquisitions	40
Goodwill, ending balance	9,590
Insurance
Goodwill
Goodwill, beginning balance	2,663
Acquisitions	0
Goodwill, ending balance	2,663
CenterWell
Goodwill
Goodwill, beginning balance	6,887
Acquisitions	40
Goodwill, ending balance	$ 6,927