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Business Combinations (Narrative) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2025 USD ($)
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] |
Business Combination, Consideration Transferred | $ 4,700
Business Acquisition [Line Items] |
Goodwill | 3,705
Optum Health |
Business Acquisition [Line Items] |
Goodwill | $ 3,400

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