Goodwill and Intangible Assets (Tables)
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12 Months Ended |
Dec. 31, 2025 |
| Goodwill [Line Items] |
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| Schedule of Goodwill [Table Text Block] |
Changes in the carrying amount of goodwill, by reportable segment, were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (in millions) | | UnitedHealthcare | | Optum Health | | Optum Insight | | Optum Rx | | Consolidated | | Balance at January 1, 2024 | | $ | 27,878 | | | $ | 37,079 | | | $ | 19,307 | | | $ | 19,468 | | | $ | 103,732 | | | Acquisitions | | — | | | 2,071 | | | — | | | 2,305 | | | 4,376 | | | Dispositions, foreign currency effects and other adjustments, net | | (717) | | | (324) | | | (327) | | | (6) | | | (1,374) | | | Balance at December 31, 2024 | | 27,161 | | | 38,826 | | | 18,980 | | | 21,767 | | | 106,734 | | | Acquisitions | | — | | | 4,011 | | | — | | | 284 | | | 4,295 | | | Dispositions, foreign currency effects and other adjustments, net | | 35 | | | (72) | | | (247) | | | (246) | | | (530) | | | Balance at December 31, 2025 | | $ | 27,196 | | | $ | 42,765 | | | $ | 18,733 | | | $ | 21,805 | | | $ | 110,499 | |
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| Schedule of Acquired Intangible Assets by Major Class [Table Text Block] |
The gross carrying value, accumulated amortization and net carrying value of other intangible assets were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | December 31, 2024 | | (in millions) | | Gross Carrying Value | | Accumulated Amortization | | Net Carrying Value | | Gross Carrying Value | | Accumulated Amortization | | Net Carrying Value | | Customer-related | | $ | 14,456 | | | $ | (5,966) | | | $ | 8,490 | | | $ | 17,190 | | | $ | (6,675) | | | $ | 10,515 | | | Trademarks and technology | | 2,356 | | | (1,265) | | | 1,091 | | | 2,917 | | | (1,284) | | | 1,633 | | | Trade names, trademarks, operating licenses and certificates and other indefinite-lived | | 10,734 | | | — | | | 10,734 | | | 10,454 | | | — | | | 10,454 | | | Other | | 400 | | | (241) | | | 159 | | | 1,057 | | | (391) | | | 666 | | | Total | | $ | 27,946 | | | $ | (7,472) | | | $ | 20,474 | | | $ | 31,618 | | | $ | (8,350) | | | $ | 23,268 | |
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| Schedule of Intangible Assets Acquired as Part of Business Combination [Table Text Block] |
The fair values and weighted-average useful lives assigned to intangible assets as a result of transactions completed during years ended: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2025 | | 2024 | | (in millions, except years) | | Fair Value | | Weighted-Average Useful Life | | Fair Value | | Weighted-Average Useful Life | | Customer-related | | $ | 14 | | | 8 years | | $ | 1,258 | | | 12 years | | Trademarks and technology | | 21 | | | 3 years | | 527 | | | 6 years | | Other | | 75 | | | 9 years | | 22 | | | 8 years | | Total finite-lived | | $ | 110 | | | 8 years | | $ | 1,807 | | | 10 years | | Total indefinite-lived - trade names, trademarks, operating licenses and certificates and other | | 415 | | | | | 8,795 | | | | | Total intangible assets | | $ | 525 | | | | | $ | 10,602 | | | |
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| Schedule of Intangible Assets, Future Amortization Expense [Table Text Block] |
Estimated full year amortization expense relating to intangible assets for each of the next five years ending December 31 is as follows: | | | | | | | | | | (in millions) | | | | 2026 | | $ | 1,340 | | | 2027 | | 1,257 | | | 2028 | | 1,178 | | | 2029 | | 1,047 | | | 2030 | | 926 | |
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