GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Changes in Carrying Amount of Goodwill By Reportable Segments (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 9,631
Acquisitions	5
Dispositions	(17)
Goodwill, ending balance	9,619
Insurance
Goodwill [Roll Forward]
Goodwill, beginning balance	2,663
Acquisitions	0
Dispositions	0
Goodwill, ending balance	2,663
CenterWell
Goodwill [Roll Forward]
Goodwill, beginning balance	6,968
Acquisitions	5
Dispositions	(17)
Goodwill, ending balance	$ 6,956