v3.25.4
Segment Financial Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement [Line Items]      
Premiums, revenues - unaffiliated customers $ 352,229 $ 308,810 $ 290,827
Investment and other income 3,920 5,202 4,089
Total revenues 447,567 400,278 371,622
Total operating costs 428,603 367,991 339,264
Earnings from operations 18,964 32,287 32,358
Interest expense (4,002) (3,906) (3,246)
Loss on sale of subsidiary and subsidiaries held for sale (265) (8,310) 0
Earnings before income taxes 14,697 20,071 29,112
Total assets 309,581 298,278 273,720
Segment, Expenditure, Addition to Long-Lived Assets 3,622 3,499 3,386
Depreciation and amortization 4,361 4,099 3,972
Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 53,380 50,226 42,583
Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 38,038 36,040 34,123
Optum      
Statement [Line Items]      
Investment and other income 1,747 2,789 1,838
Total revenues 270,620 252,957 226,635
Total operating costs 261,081 236,254 210,692
Earnings from operations 9,539 16,703 15,943
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes 9,539 16,703 15,943
Total assets 198,653 190,010 174,871
Segment, Expenditure, Addition to Long-Lived Assets 2,806 2,718 2,520
Depreciation and amortization 3,478 3,210 2,983
Unaffiliated Customers      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 352,229 308,810 290,827
Total revenues 443,647 395,076 367,533
Unaffiliated Customers | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 53,380 50,226 42,583
Unaffiliated Customers | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 38,038 36,040 34,123
Unaffiliated Customers | Optum      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 19,839 22,806 21,775
Total revenues 100,917 99,281 88,424
Unaffiliated Customers | Optum | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 53,380 50,226 42,583
Unaffiliated Customers | Optum | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 27,698 26,249 24,066
Affiliated Customers      
Statement [Line Items]      
Total revenues 0 0 0
Affiliated Customers | Optum      
Statement [Line Items]      
Total revenues 167,956 150,887 136,373
Operating Segments | UnitedHealthcare      
Statement [Line Items]      
Investment and other income 2,173 2,413 2,251
Total revenues 344,903 298,208 281,360
Total operating costs 335,478 282,624 264,945
Earnings from operations 9,425 15,584 16,415
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale (265) (8,310)  
Earnings before income taxes 9,160 7,274 16,415
Total assets 124,051 119,009 110,943
Segment, Expenditure, Addition to Long-Lived Assets 816 781 866
Depreciation and amortization 883 889 989
Operating Segments | Optum Health      
Statement [Line Items]      
Investment and other income 1,473 2,239 1,532
Total revenues 101,957 105,358 95,319
Total operating costs 102,235 97,588 88,759
Earnings from operations (278) 7,770 6,560
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes (278) 7,770 6,560
Total assets 100,991 96,472 89,432
Segment, Expenditure, Addition to Long-Lived Assets 1,237 1,008 1,199
Depreciation and amortization 1,211 1,123 1,058
Operating Segments | Optum Insight      
Statement [Line Items]      
Investment and other income 100 236 114
Total revenues 19,417 18,757 18,932
Total operating costs 16,793 15,660 14,664
Earnings from operations 2,624 3,097 4,268
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes 2,624 3,097 4,268
Total assets 35,400 34,452 34,173
Segment, Expenditure, Addition to Long-Lived Assets 1,170 1,291 974
Depreciation and amortization 1,422 1,294 1,229
Operating Segments | Optum Rx      
Statement [Line Items]      
Investment and other income 174 314 192
Total revenues 154,726 133,231 116,087
Total operating costs 147,533 127,395 110,972
Earnings from operations 7,193 5,836 5,115
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes 7,193 5,836 5,115
Total assets 62,262 59,086 51,266
Segment, Expenditure, Addition to Long-Lived Assets 399 419 347
Depreciation and amortization 845 793 696
Operating Segments | Unaffiliated Customers | UnitedHealthcare      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 332,390 286,004 269,052
Total revenues 342,730 295,795 279,109
Operating Segments | Unaffiliated Customers | UnitedHealthcare | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 0 0 0
Operating Segments | Unaffiliated Customers | UnitedHealthcare | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 10,340 9,791 10,057
Operating Segments | Unaffiliated Customers | Optum Health      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 19,839 22,806 21,775
Total revenues 36,869 39,236 36,091
Operating Segments | Unaffiliated Customers | Optum Health | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 273 277 207
Operating Segments | Unaffiliated Customers | Optum Health | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 16,757 16,153 14,109
Operating Segments | Unaffiliated Customers | Optum Insight      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 0 0 0
Total revenues 6,369 6,640 7,922
Operating Segments | Unaffiliated Customers | Optum Insight | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 182 174 162
Operating Segments | Unaffiliated Customers | Optum Insight | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 6,187 6,466 7,760
Operating Segments | Unaffiliated Customers | Optum Rx      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 0 0 0
Total revenues 57,679 53,405 44,411
Operating Segments | Unaffiliated Customers | Optum Rx | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 52,925 49,775 42,214
Operating Segments | Unaffiliated Customers | Optum Rx | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 4,754 3,630 2,197
Operating Segments | Affiliated Customers | UnitedHealthcare      
Statement [Line Items]      
Total revenues 0 0 0
Operating Segments | Affiliated Customers | Optum Health      
Statement [Line Items]      
Total revenues 63,615 63,883 57,696
Operating Segments | Affiliated Customers | Optum Insight      
Statement [Line Items]      
Total revenues 12,948 11,881 10,896
Operating Segments | Affiliated Customers | Optum Rx      
Statement [Line Items]      
Total revenues 96,873 79,512 71,484
Optum Eliminations      
Statement [Line Items]      
Investment and other income 0 0 0
Total revenues (5,480) (4,389) (3,703)
Total operating costs (5,480) (4,389) (3,703)
Earnings from operations 0 0 0
Interest expense 0 0 0
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes 0 0 0
Total assets 0 0
Segment, Expenditure, Addition to Long-Lived Assets 0 0 0
Depreciation and amortization 0 0 0
Optum Eliminations | Unaffiliated Customers      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 0 0 0
Total revenues 0 0 0
Optum Eliminations | Unaffiliated Customers | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 0 0 0
Optum Eliminations | Unaffiliated Customers | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 0 0 0
Optum Eliminations | Affiliated Customers      
Statement [Line Items]      
Total revenues (5,480) (4,389) (3,703)
Corporate and Eliminations      
Statement [Line Items]      
Investment and other income 0 0 0
Total revenues (167,956) (150,887) (136,373)
Total operating costs (167,956) (150,887) (136,373)
Earnings from operations 0 0 0
Interest expense (4,002) (3,906) (3,246)
Loss on sale of subsidiary and subsidiaries held for sale 0 0  
Earnings before income taxes (4,002) (3,906) (3,246)
Total assets (13,123) (10,741) (12,094)
Segment, Expenditure, Addition to Long-Lived Assets 0 0 0
Depreciation and amortization 0 0 0
Corporate and Eliminations | Unaffiliated Customers      
Statement [Line Items]      
Premiums, revenues - unaffiliated customers 0 0 0
Total revenues 0 0 0
Corporate and Eliminations | Unaffiliated Customers | Products      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 0 0 0
Corporate and Eliminations | Unaffiliated Customers | Services      
Statement [Line Items]      
Revenue from Products and Services - unaffiliated customers 0 0 0
Corporate and Eliminations | Affiliated Customers      
Statement [Line Items]      
Total revenues $ (167,956) $ (150,887) $ (136,373)