v3.26.1
Segment Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Statement [Line Items]          
Premiums, revenues - unaffiliated customers $ 86,956 $ 87,905 $ 174,517 $ 174,439  
Investment and other income 1,223 1,108 2,354 2,141  
Total revenues 112,032 111,616 223,753 221,191  
Total operating costs 104,041 106,466 206,772 206,922  
Earnings from operations 7,991 5,150 16,981 14,269  
Interest expense (962) (1,027) (1,917) (2,025)  
Loss on sale of subsidiary and subsidiaries held for sale (61) (41) (133) (56)  
Earnings before income taxes 6,968 4,082 14,931 12,188  
Total assets 309,727 308,573 309,727 308,573 $ 309,581
Purchases of property, equipment and capitalized software 799 886 1,562 1,784  
Depreciation and amortization 1,040 1,084 2,069 2,145  
Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,835 13,564 27,085 26,600  
Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 10,018 9,039 19,797 18,011  
Optum          
Statement [Line Items]          
Investment and other income 573 535 1,200 1,040  
Total revenues 65,663 67,225 129,412 131,110  
Total operating costs 61,614 64,150 122,067 124,142  
Earnings from operations 4,049 3,075 7,345 6,968  
Interest expense 0 0 0 0  
Earnings before income taxes 4,049 3,075 7,345 6,968  
Total assets 194,772 191,842 194,772 191,842  
Purchases of property, equipment and capitalized software 592 693 1,151 1,395  
Depreciation and amortization 864 863 1,675 1,705  
Unaffiliated Customers          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 86,956 87,905 174,517 174,439  
Total revenues 110,809 110,508 221,399 219,050  
Unaffiliated Customers | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,835 13,564 27,085 26,600  
Unaffiliated Customers | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 10,018 9,039 19,797 18,011  
Unaffiliated Customers | Optum          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 4,343 4,886 8,918 9,907  
Total revenues 25,442 24,978 50,271 49,431  
Unaffiliated Customers | Optum | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,835 13,564 27,085 26,600  
Unaffiliated Customers | Optum | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 7,264 6,528 14,268 12,924  
Affiliated Customers          
Statement [Line Items]          
Total revenues 0 0 0 0  
Affiliated Customers | Optum          
Statement [Line Items]          
Total revenues 39,648 41,712 77,941 80,639  
Operating Segments | UnitedHealthcare          
Statement [Line Items]          
Investment and other income 650 573 1,154 1,101  
Total revenues 86,017 86,103 172,282 170,720  
Total operating costs 82,075 84,028 162,646 163,419  
Earnings from operations 3,942 2,075 9,636 7,301  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale (61) (41) (133) (56)  
Earnings before income taxes 3,881 2,034 9,503 7,245  
Total assets 125,495 129,587 125,495 129,587  
Purchases of property, equipment and capitalized software 207 193 411 389  
Depreciation and amortization 176 221 394 440  
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 240 240 484 465  
Total revenues 23,472 24,725 47,581 49,562  
Total operating costs 22,282 24,296 45,250 47,722  
Earnings from operations 1,190 429 2,331 1,840  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 1,190 429 2,331 1,840  
Total assets 72,716 69,810 72,716 69,810  
Purchases of property, equipment and capitalized software 210 292 394 556  
Depreciation and amortization 260 262 506 517  
Operating Segments | Optum Insight          
Statement [Line Items]          
Investment and other income 284 247 626 480  
Total revenues 5,402 5,232 10,527 10,259  
Total operating costs 4,033 4,027 8,195 7,890  
Earnings from operations 1,369 1,205 2,332 2,369  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 1,369 1,205 2,332 2,369  
Total assets 62,875 60,358 62,875 60,358  
Purchases of property, equipment and capitalized software 291 303 597 656  
Depreciation and amortization 414 385 806 761  
Operating Segments | Optum Rx          
Statement [Line Items]          
Investment and other income 49 48 90 95  
Total revenues 38,292 38,459 74,028 73,591  
Total operating costs 36,802 37,018 71,346 70,832  
Earnings from operations 1,490 1,441 2,682 2,759  
Interest expense 0 0 0 0  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes 1,490 1,441 2,682 2,759  
Total assets 59,656 61,674 59,656 61,674  
Purchases of property, equipment and capitalized software 91 98 160 183  
Depreciation and amortization 190 216 363 427  
Operating Segments | Unaffiliated Customers | UnitedHealthcare          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 82,613 83,019 165,599 164,532  
Total revenues 85,367 85,530 171,128 169,619  
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 2,754 2,511 5,529 5,087  
Operating Segments | Unaffiliated Customers | Optum Health          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 4,343 4,886 8,918 9,907  
Total revenues 8,879 8,640 17,746 17,442  
Operating Segments | Unaffiliated Customers | Optum Health | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 62 65 119 130  
Operating Segments | Unaffiliated Customers | Optum Health | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 4,474 3,689 8,709 7,405  
Operating Segments | Unaffiliated Customers | Optum Insight          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 1,562 1,717 3,227 3,420  
Operating Segments | Unaffiliated Customers | Optum Insight | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 45 44 90 88  
Operating Segments | Unaffiliated Customers | Optum Insight | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 1,517 1,673 3,137 3,332  
Operating Segments | Unaffiliated Customers | Optum Rx          
Statement [Line Items]          
Premiums, revenues - unaffiliated customers 0 0 0 0  
Total revenues 15,001 14,621 29,298 28,569  
Operating Segments | Unaffiliated Customers | Optum Rx | Products          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 13,728 13,455 26,876 26,382  
Operating Segments | Unaffiliated Customers | Optum Rx | Services          
Statement [Line Items]          
Revenue from Products and Services - unaffiliated customers 1,273 1,166 2,422 2,187  
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 14,353 15,845 29,351 31,655  
Operating Segments | Affiliated Customers | Optum Insight          
Statement [Line Items]          
Total revenues 3,556 3,268 6,674 6,359  
Operating Segments | Affiliated Customers | Optum Rx          
Statement [Line Items]          
Total revenues 23,242 23,790 44,640 44,927  
Optum Eliminations          
Statement [Line Items]          
Investment and other income 0 0 0 0  
Total revenues (1,503) (1,191) (2,724) (2,302)  
Total operating costs (1,503) (1,191) (2,724) (2,302)  
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 (475) 0 (475) 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 (1,503) (1,191) (2,724) (2,302)  
Corporate and Eliminations          
Statement [Line Items]          
Investment and other income 0 0 0 0  
Total revenues (39,648) (41,712) (77,941) (80,639)  
Total operating costs (39,648) (41,712) (77,941) (80,639)  
Earnings from operations 0 0 0 0  
Interest expense (962) (1,027) (1,917) (2,025)  
Loss on sale of subsidiary and subsidiaries held for sale 0 0 0 0  
Earnings before income taxes (962) (1,027) (1,917) (2,025)  
Total assets (10,540) (12,856) (10,540) (12,856)  
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 $ (39,648) $ (41,712) $ (77,941) $ (80,639)