Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Goodwill [Line Items]
Finite-lived intangible asset retirements	$ 1,906	$ 27
2026	436
2027	387
2028	337
2029	298
2030	263
Customer relationships
Goodwill [Line Items]
Measurement period adjustments	$ (690)
Carelon Services
Goodwill [Line Items]
Goodwill impairment losses		$ 106
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