v3.25.2
Segment Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Statement [Line Items]          
Premiums, revenues - unaffiliated customers $ 87,905 $ 76,897 $ 174,439 $ 154,885  
Investment and other income 1,108 997 2,141 2,008  
Total revenues 111,616 98,855 221,191 198,651  
Total operating costs 106,466 90,980 206,922 182,845  
Earnings from operations 5,150 7,875 14,269 15,806  
Interest expense (1,027) (985) (2,025) (1,829)  
Loss on sale of subsidiary and subsidiaries held for sale (41) (1,225) (56) (8,311)  
Earnings before income taxes 4,082 5,665 12,188 5,666  
Total assets 308,573 286,056 308,573 286,056 $ 298,278
Purchases of property, equipment and capitalized software 886 853 1,784 1,596  
Depreciation and amortization 1,084 1,020 2,145 2,017  
Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,564 12,211 26,600 24,120  
Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 9,039 8,750 18,011 17,638  
Optum          
Statement [Line Items]          
Investment and other income 535 469 1,040 945  
Total revenues 67,225 62,879 131,110 123,931  
Total operating costs 64,150 59,008 124,142 116,524  
Earnings from operations 3,075 3,871 6,968 7,407  
Interest expense 0 0 0 0  
Earnings before income taxes 3,075 3,871 6,968 7,407  
Total assets 191,842 184,160 191,842 184,160  
Purchases of property, equipment and capitalized software 693 666 1,395 1,226  
Depreciation and amortization 863 799 1,705 1,561  
Unaffiliated Customers          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 87,905 76,897 174,439 154,885  
Total revenues 110,508 97,858 219,050 196,643  
Unaffiliated Customers | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,564 12,211 26,600 24,120  
Unaffiliated Customers | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 9,039 8,750 18,011 17,638  
Unaffiliated Customers | Optum          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 4,886 5,947 9,907 11,642  
Total revenues 24,978 24,520 49,431 48,483  
Unaffiliated Customers | Optum | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,564 12,211 26,600 24,120  
Unaffiliated Customers | Optum | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 6,528 6,362 12,924 12,721  
Affiliated Customers          
Statement [Line Items]          
Total revenues 0 0 0 0  
Affiliated Customers | Optum          
Statement [Line Items]          
Total revenues 41,712 37,890 80,639 74,503  
Operating Segments | UnitedHealthcare          
Statement [Line Items]          
Investment and other income 573 528 1,101 1,063  
Total revenues 86,103 73,866 170,720 149,223  
Total operating costs 84,028 69,862 163,419 140,824  
Earnings from operations 2,075 4,004 7,301 8,399  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale (41) (1,225) (56) (8,311)  
Earnings before income taxes 2,034 2,779 7,245 88  
Total assets 129,587 109,441 129,587 109,441  
Purchases of property, equipment and capitalized software 193 187 389 370  
Depreciation and amortization 221 221 440 456  
Operating Segments | Optum          
Statement [Line Items]          
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Operating Segments | Optum Health          
Statement [Line Items]          
Investment and other income 455 382 890 772  
Total revenues 25,205 27,050 50,514 53,781  
Total operating costs 24,569 25,131 48,264 49,963  
Earnings from operations 636 1,919 2,250 3,818  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 636 1,919 2,250 3,818  
Total assets 96,452 93,858 96,452 93,858  
Purchases of property, equipment and capitalized software 306 230 585 468  
Depreciation and amortization 296 277 583 549  
Operating Segments | Optum Insight          
Statement [Line Items]          
Investment and other income 32 27 55 55  
Total revenues 4,828 4,543 9,458 9,045  
Total operating costs 3,830 3,997 7,499 8,009  
Earnings from operations 998 546 1,959 1,036  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 998 546 1,959 1,036  
Total assets 33,716 34,244 33,716 34,244  
Purchases of property, equipment and capitalized software 289 344 627 589  
Depreciation and amortization 351 316 695 626  
Operating Segments | Optum Rx          
Statement [Line Items]          
Investment and other income 48 60 95 118  
Total revenues 38,459 32,415 73,591 63,250  
Total operating costs 37,018 31,009 70,832 60,697  
Earnings from operations 1,441 1,406 2,759 2,553  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 1,441 1,406 2,759 2,553  
Total assets 61,674 56,058 61,674 56,058  
Purchases of property, equipment and capitalized software 98 92 183 169  
Depreciation and amortization 216 206 427 386  
Operating Segments | Unaffiliated Customers | UnitedHealthcare          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 83,019 70,950 164,532 143,243  
Total revenues 85,530 73,338 169,619 148,160  
Operating Segments | Unaffiliated Customers | UnitedHealthcare | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 0 0 0 0  
Operating Segments | Unaffiliated Customers | UnitedHealthcare | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 2,511 2,388 5,087 4,917  
Operating Segments | Unaffiliated Customers | Optum Health          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 4,886 5,947 9,907 11,642  
Total revenues 8,797 10,092 17,757 19,816  
Operating Segments | Unaffiliated Customers | Optum Health | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 65 62 130 121  
Operating Segments | Unaffiliated Customers | Optum Health | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 3,846 4,083 7,720 8,053  
Operating Segments | Unaffiliated Customers | Optum Insight          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 1,560 1,446 3,105 3,189  
Operating Segments | Unaffiliated Customers | Optum Insight | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 44 41 88 82  
Operating Segments | Unaffiliated Customers | Optum Insight | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 1,516 1,405 3,017 3,107  
Operating Segments | Unaffiliated Customers | Optum Rx          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 14,621 12,982 28,569 25,478  
Operating Segments | Unaffiliated Customers | Optum Rx | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,455 12,108 26,382 23,917  
Operating Segments | Unaffiliated Customers | Optum Rx | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 1,166 874 2,187 1,561  
Operating Segments | Affiliated Customers | UnitedHealthcare          
Statement [Line Items]          
Total revenues 0 0 0 0  
Operating Segments | Affiliated Customers | Optum Health          
Statement [Line Items]          
Total revenues 15,953 16,576 31,867 33,193  
Operating Segments | Affiliated Customers | Optum Insight          
Statement [Line Items]          
Total revenues 3,236 3,070 6,298 5,801  
Operating Segments | Affiliated Customers | Optum Rx          
Statement [Line Items]          
Total revenues 23,790 19,373 44,927 37,654  
Optum Eliminations          
Statement [Line Items]          
Investment and other income 0 0 0 0  
Total revenues (1,267) (1,129) (2,453) (2,145)  
Total operating costs (1,267) (1,129) (2,453) (2,145)  
Earnings from operations 0 0 0 0  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 0 0 0 0  
Total assets 0 0 0 0  
Purchases of property, equipment and capitalized software 0 0 0 0  
Depreciation and amortization 0 0 0 0  
Optum Eliminations | Unaffiliated Customers          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 0 0 0 0  
Optum Eliminations | Unaffiliated Customers | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 0 0 0 0  
Optum Eliminations | Unaffiliated Customers | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 0 0 0 0  
Optum Eliminations | Affiliated Customers          
Statement [Line Items]          
Total revenues (1,267) (1,129) (2,453) (2,145)  
Corporate and Eliminations          
Statement [Line Items]          
Investment and other income 0 0 0 0  
Total revenues (41,712) (37,890) (80,639) (74,503)  
Total operating costs (41,712) (37,890) (80,639) (74,503)  
Earnings from operations 0 0 0 0  
Interest expense (1,027) (985) (2,025) (1,829)  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes (1,027) (985) (2,025) (1,829)  
Total assets (12,856) (7,545) (12,856) (7,545)  
Purchases of property, equipment and capitalized software 0 0 0 0  
Depreciation and amortization 0 0 0 0  
Corporate and Eliminations | Unaffiliated Customers          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 0 0 0 0  
Corporate and Eliminations | Unaffiliated Customers | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 0 0 0 0  
Corporate and Eliminations | Unaffiliated Customers | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 0 0 0 0  
Corporate and Eliminations | Affiliated Customers          
Statement [Line Items]          
Total revenues $ (41,712) $ (37,890) $ (80,639) $ (74,503)