Goodwill and Other Intangible Assets - Summary of the Change in the Carrying Amount of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Change in the carrying amount of goodwill by reportable segment
Goodwill, beginning balance	$ 28,277	$ 25,317
Acquisitions and adjustments	67	2,960
Goodwill, ending balance	28,344	28,277
Accumulated impairment as of December 31, 2025	0
Health Benefits
Change in the carrying amount of goodwill by reportable segment
Goodwill, beginning balance	22,564	22,104
Acquisitions and adjustments	(112)	460
Goodwill, ending balance	22,452	22,564
Accumulated impairment as of December 31, 2025	0
CarelonRx
Change in the carrying amount of goodwill by reportable segment
Goodwill, beginning balance	1,915	957
Acquisitions and adjustments	(17)	958
Goodwill, ending balance	1,898	1,915
Accumulated impairment as of December 31, 2025	0
Carelon Services
Change in the carrying amount of goodwill by reportable segment
Goodwill, beginning balance	3,798	2,256
Acquisitions and adjustments	196	1,542
Goodwill, ending balance	3,994	$ 3,798
Accumulated impairment as of December 31, 2025	$ 0