v3.26.3
Segment Information - Schedule of Financial Data by Reportable Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Premiums $ 41,704 $ 41,791 $ 124,007 $ 123,949
Operating revenue - total 50,440 50,087 149,760 148,273
Benefit expense 37,779 38,140 110,418 110,158
Cost of products sold 5,640 5,380 16,595 15,656
Operating expense 5,752 5,272 17,629 15,569
Operating gain (loss) 1,269 1,295 5,118 6,890
Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,454 6,159 18,943 18,010
Service fees        
Segment Reporting [Line Items]        
Product and service revenue 2,282 2,137 6,810 6,314
Eliminations        
Segment Reporting [Line Items]        
Premiums (247) (275) (655) (778)
Operating revenue - total (12,230) (10,629) (35,320) (30,589)
Benefit expense (6,373) (5,058) (18,770) (14,547)
Cost of products sold (5,139) (4,829) (14,487) (13,721)
Operating expense (718) (742) (2,063) (2,321)
Operating gain (loss) 0 0 0 0
Eliminations | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Eliminations | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Health Benefits | Operating Segments        
Segment Reporting [Line Items]        
Premiums 41,282 40,304 122,381 119,602
Operating revenue - total 43,357 42,246 128,567 125,259
Benefit expense 37,625 36,845 109,817 106,725
Cost of products sold 0 0 0 0
Operating expense 5,296 4,800 15,261 14,156
Operating gain (loss) 436 601 3,489 4,378
Health Benefits | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Health Benefits | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 2,075 1,942 6,186 5,657
Total Carelon | Operating Segments        
Segment Reporting [Line Items]        
Premiums 669 1,762 2,281 5,125
Operating revenue - total 19,307 18,321 56,497 53,057
Benefit expense 6,521 6,349 19,350 17,958
Cost of products sold 10,779 10,209 31,082 29,377
Operating expense 1,099 988 3,157 2,918
Operating gain (loss) 908 775 2,908 2,804
Total Carelon | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,454 6,159 18,943 18,010
Total Carelon | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 207 195 624 657
CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Premiums 0 0 0 0
Operating revenue - total 11,599 10,997 33,449 31,756
Benefit expense 0 0 0 0
Cost of products sold 10,779 10,209 31,082 29,377
Operating expense 204 232 587 685
Operating gain (loss) 616 556 1,780 1,694
CarelonRx | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,454 6,159 18,943 18,010
CarelonRx | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 1 4 8 11
Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Premiums 669 1,762 2,281 5,125
Operating revenue - total 7,708 7,324 23,048 21,301
Benefit expense 6,521 6,349 19,350 17,958
Cost of products sold 0 0 0 0
Operating expense 895 756 2,570 2,233
Operating gain (loss) 292 219 1,128 1,110
Carelon Services | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Carelon Services | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 206 191 616 646
Corporate & Other | Operating Segments        
Segment Reporting [Line Items]        
Premiums 0 0 0 0
Operating revenue - total 6 149 16 546
Benefit expense 6 4 21 22
Cost of products sold 0 0 0 0
Operating expense 75 226 1,274 816
Operating gain (loss) (75) (81) (1,279) (292)
Corporate & Other | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Corporate & Other | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 0 0 0 0
Operating revenue - unaffiliated        
Segment Reporting [Line Items]        
Operating revenue - total 50,440 50,087 149,760 148,273
Operating revenue - unaffiliated | Eliminations        
Segment Reporting [Line Items]        
Operating revenue - total (247) (275) (655) (778)
Operating revenue - unaffiliated | Health Benefits | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 43,357 42,246 128,567 125,259
Operating revenue - unaffiliated | Total Carelon | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 7,330 8,116 21,848 23,792
Operating revenue - unaffiliated | CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 6,455 6,163 18,951 18,021
Operating revenue - unaffiliated | Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 875 1,953 2,897 5,771
Operating revenue - unaffiliated | Corporate & Other | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 0 0 0 0
Operating revenue - affiliated        
Segment Reporting [Line Items]        
Operating revenue - total 0 0 0 0
Operating revenue - affiliated | Eliminations        
Segment Reporting [Line Items]        
Operating revenue - total (11,983) (10,354) (34,665) (29,811)
Operating revenue - affiliated | Health Benefits | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 0 0 0 0
Operating revenue - affiliated | Total Carelon | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 11,977 10,205 34,649 29,265
Operating revenue - affiliated | CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 5,144 4,834 14,498 13,735
Operating revenue - affiliated | Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 6,833 5,371 20,151 15,530
Operating revenue - affiliated | Corporate & Other | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total $ 6 $ 149 $ 16 $ 546