Schedule I (Tables)
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12 Months Ended |
Dec. 31, 2025 |
| Condensed Financial Statements, Captions [Line Items] |
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| Schedule of Maturities of Long-term Debt [Table Text Block] |
Maturities of short-term borrowings and long-term debt for the years ending December 31 are as follows: | | | | | | | | | | (in millions) | | | | 2026 | | $ | 6,082 | | | 2027 | | 3,530 | | | 2028 | | 3,605 | | | 2029 | | 3,655 | | | 2030 | | 3,855 | | | Thereafter | | 58,657 | |
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| Parent Company [Member] |
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| Condensed Financial Statements, Captions [Line Items] |
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| Condensed Balance Sheet [Table Text Block] |
Condensed Financial Information of Registrant (Parent Company Only) UnitedHealth Group Condensed Balance Sheets | | | | | | | | | | | | | | | | (in millions, except per share data) | | December 31, 2025 | | December 31, 2024 | | Assets | | | | | | Current assets: | | | | | | Cash and cash equivalents | | $ | 303 | | | $ | 234 | | | Other current assets | | 1,533 | | | 411 | | | Total current assets | | 1,836 | | | 645 | | | Equity in net assets of subsidiaries | | 206,415 | | | 179,888 | | | Long-term notes receivable from subsidiaries | | 679 | | | 6,062 | | | Other assets | | 673 | | | 920 | | | Total assets | | $ | 209,603 | | | $ | 187,515 | | | | | | | | Liabilities and shareholders’ equity | | | | | | Current liabilities: | | | | | Accounts payable and accrued liabilities | | $ | 2,812 | | | $ | 1,501 | | | Intercompany payable, net | | 10,236 | | | 679 | | | Short-term notes payable to subsidiaries | | 2,503 | | | 2,016 | | | Short-term borrowings and current maturities of long-term debt | | 5,887 | | | 4,348 | | | Total current liabilities | | 21,438 | | | 8,544 | | | Long-term debt, less current maturities | | 71,794 | | | 71,831 | | | Long-term notes payable to subsidiaries | | 21,676 | | | 14,405 | | | Other liabilities | | 585 | | | 77 | | | Total liabilities | | 115,493 | | | 94,857 | | | Commitments and contingencies (Note 4) | | | | | | Shareholders’ equity: | | | | | Preferred stock, $0.001 par value -10 shares authorized; no shares issued or outstanding | | — | | | — | | Common stock, $0.01 par value - 3,000 shares authorized; 906 and 915 issued and outstanding | | 9 | | | 9 | | | Additional paid-in capital | | 559 | | | — | | | Retained earnings | | 95,603 | | | 96,036 | | | Accumulated other comprehensive loss | | (2,061) | | | (3,387) | | | Total UnitedHealth Group shareholders’ equity | | 94,110 | | | 92,658 | | | Total liabilities and shareholders’ equity | | $ | 209,603 | | | $ | 187,515 | |
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| Condensed Statement of Comprehensive Income [Table Text Block] |
Condensed Financial Information of Registrant (Parent Company Only) UnitedHealth Group Condensed Statements of Comprehensive Income | | | | | | | | | | | | | | | | | | | | | | | | For the Years Ended December 31, | | (in millions) | | 2025 | | 2024 | | 2023 | | Revenues: | | | | | | | | Investment and other income | | $ | 154 | | | $ | 368 | | | $ | 312 | | | Total revenues | | 154 | | | 368 | | | 312 | | | Operating costs: | | | | | | | Operating costs | | 10 | | | 108 | | | 35 | | Interest expense | | 4,780 | | | 4,544 | | | 3,469 | | | Total operating costs | | 4,790 | | | 4,652 | | | 3,504 | | | Loss before income taxes | | (4,636) | | | (4,284) | | | (3,192) | | | Benefit for income taxes | | 974 | | | 1,032 | | | 654 | | | Loss of parent company | | (3,662) | | | (3,252) | | | (2,538) | | | Equity in undistributed income of subsidiaries | | 15,718 | | | 17,657 | | | 24,919 | | | Net earnings | | 12,056 | | | 14,405 | | | 22,381 | | | Other comprehensive income | | 1,326 | | | 3,640 | | | 1,366 | | | Comprehensive income | | $ | 13,382 | | | $ | 18,045 | | | $ | 23,747 | |
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| Condensed Cash Flow Statement [Table Text Block] |
Condensed Financial Information of Registrant (Parent Company Only) UnitedHealth Group Condensed Statements of Cash Flows | | | | | | | | | | | | | | | | | | | | | | | | For the Years Ended December 31, | | (in millions) | | 2025 | | 2024 | | 2023 | | Operating activities | | | | | | | | Cash flows from operating activities | | $ | 13,311 | | | $ | 4,852 | | | $ | 17,443 | | | Investing activities | | | | | | | | Issuances of notes to subsidiaries | | (3,901) | | | (349) | | | (41) | | | Repayments of notes to subsidiaries | | 8,655 | | | 225 | | | 817 | | | Cash paid for acquisitions and other transactions | | (4,648) | | | (13,750) | | | (8,144) | | | Return of capital to parent company | | 901 | | | 21 | | | 639 | | | Capital contributions to subsidiaries | | (6,822) | | | — | | | (2,472) | | | Cash received from dispositions, net | | 458 | | | 2,444 | | | 624 | | | Other, net | | — | | | 30 | | | 286 | | | Cash flows used for investing activities | | (5,357) | | | (11,379) | | | (8,291) | | | Financing activities | | | | | | | | Common stock repurchases | | (5,545) | | | (9,000) | | | (8,000) | | | Proceeds from common stock issuances | | 827 | | | 1,846 | | | 1,353 | | | Cash dividends paid | | (7,916) | | | (7,533) | | | (6,761) | | | Proceeds from (repayments of) short-term borrowings, net | | 807 | | | (151) | | | 11 | | | Proceeds from issuance of long-term debt | | 2,969 | | | 17,811 | | | 6,394 | | | Repayments of long-term debt | | (3,050) | | | (3,000) | | | (2,125) | | | (Repayments of) proceeds from short-term notes from subsidiaries, net | | (677) | | | (7,966) | | | 1,188 | | | Proceeds from long-term notes from subsidiaries | | 7,162 | | | 14,396 | | | — | | | Repayments of long-term notes from subsidiaries | | (2,120) | | | (28) | | | — | | | Other, net | | (342) | | | (390) | | | (702) | | | Cash flows (used for) from financing activities | | (7,885) | | | 5,985 | | | (8,642) | | | Increase (decrease) in cash and cash equivalents | | 69 | | | (542) | | | 510 | | | Cash and cash equivalents, beginning of period | | 234 | | | 776 | | | 266 | | | Cash and cash equivalents, end of period | | $ | 303 | | | $ | 234 | | | $ | 776 | | | | | | | | | | Supplemental cash flow disclosures | | | | | | | | Cash paid for interest | | $ | 4,817 | | | $ | 4,241 | | | $ | 3,257 | | | Cash paid for income taxes | | 1,119 | | | 2,450 | | | 4,426 | |
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| Schedule of Maturities of Long-term Debt [Table Text Block] |
Maturities of short-term borrowings and long-term debt for the years ending December 31 are as follows: | | | | | | | | | | (in millions) | | | | 2026 | | $ | 5,900 | | | 2027 | | 3,425 | | | 2028 | | 3,500 | | | 2029 | | 3,550 | | | 2030 | | 3,750 | | | Thereafter | | 58,552 | |
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