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Goodwill and Intangible Assets Changes in the Carrying Amount of Goodwill by Reporting Segment (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | $ 103,732 | $ 93,352
Acquisitions | 4,376 | 10,121
Dispositions, foreign currency effects and adjustments, net | (1,374) | 259
Goodwill, Ending Balance | 106,734 | 103,732
UnitedHealthcare |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 27,878 | 27,395
Acquisitions | 0 | 296
Dispositions, foreign currency effects and adjustments, net | (717) | 187
Goodwill, Ending Balance | 27,161 | 27,878
Optum Health |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 37,079 | 29,238
Acquisitions | 2,071 | 8,023
Dispositions, foreign currency effects and adjustments, net | (324) | (182)
Goodwill, Ending Balance | 38,826 | 37,079
Optum Insight |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 19,307 | 17,244
Acquisitions | 0 | 1,802
Dispositions, foreign currency effects and adjustments, net | (327) | 261
Goodwill, Ending Balance | 18,980 | 19,307
Optum Rx |  |
Goodwill [Line Items] |  |
Goodwill, Beginning Balance | 19,468 | 19,475
Acquisitions | 2,305 | 0
Dispositions, foreign currency effects and adjustments, net | (6) | (7)
Goodwill, Ending Balance | $ 21,767 | $ 19,468

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