v3.26.1
Segment Information - Schedule of Financial Data by Reportable Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Premiums $ 41,279 $ 41,271 $ 82,303 $ 82,158
Operating revenue - total 49,826 49,421 99,320 98,186
Benefit expense 37,024 36,706 72,639 72,018
Cost of products sold 5,492 5,293 10,955 10,276
Operating expense 5,547 4,997 11,877 10,297
Operating gain (loss) 1,763 2,425 3,849 5,595
Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,264 6,042 12,489 11,851
Service fees        
Segment Reporting [Line Items]        
Product and service revenue 2,283 2,108 4,528 4,177
Eliminations        
Segment Reporting [Line Items]        
Premiums (201) (302) (408) (503)
Operating revenue - total (12,125) (10,477) (23,090) (19,960)
Benefit expense (6,464) (5,079) (12,397) (9,489)
Cost of products sold (4,981) (4,591) (9,348) (8,892)
Operating expense (680) (807) (1,345) (1,579)
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 40,647 39,710 81,099 79,298
Operating revenue - total 42,720 41,582 85,210 83,013
Benefit expense 36,739 35,487 72,192 69,880
Cost of products sold 0 0 0 0
Operating expense 5,085 4,535 9,965 9,356
Operating gain (loss) 896 1,560 3,053 3,777
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 2,073 1,872 4,111 3,715
Total Carelon | Operating Segments        
Segment Reporting [Line Items]        
Premiums 833 1,863 1,612 3,363
Operating revenue - total 19,225 18,084 37,190 34,736
Benefit expense 6,743 6,290 12,829 11,609
Cost of products sold 10,473 9,884 20,303 19,168
Operating expense 1,061 974 2,058 1,930
Operating gain (loss) 948 936 2,000 2,029
Total Carelon | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,264 6,042 12,489 11,851
Total Carelon | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 210 236 417 462
CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Premiums 0 0 0 0
Operating revenue - total 11,250 10,643 21,850 20,759
Benefit expense 0 0 0 0
Cost of products sold 10,473 9,884 20,303 19,168
Operating expense 195 223 383 453
Operating gain (loss) 582 536 1,164 1,138
CarelonRx | Operating Segments | Product revenue        
Segment Reporting [Line Items]        
Product and service revenue 6,264 6,042 12,489 11,851
CarelonRx | Operating Segments | Service fees        
Segment Reporting [Line Items]        
Product and service revenue 3 4 7 7
Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Premiums 833 1,863 1,612 3,363
Operating revenue - total 7,975 7,441 15,340 13,977
Benefit expense 6,743 6,290 12,829 11,609
Cost of products sold 0 0 0 0
Operating expense 866 751 1,675 1,477
Operating gain (loss) 366 400 836 891
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 207 232 410 455
Corporate & Other | Operating Segments        
Segment Reporting [Line Items]        
Premiums 0 0 0 0
Operating revenue - total 6 232 10 397
Benefit expense 6 8 15 18
Cost of products sold 0 0 0 0
Operating expense 81 295 1,199 590
Operating gain (loss) (81) (71) (1,204) (211)
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 49,826 49,421 99,320 98,186
Operating revenue - unaffiliated | Eliminations        
Segment Reporting [Line Items]        
Operating revenue - total (201) (302) (408) (503)
Operating revenue - unaffiliated | Health Benefits | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 42,720 41,582 85,210 83,013
Operating revenue - unaffiliated | Total Carelon | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 7,307 8,141 14,518 15,676
Operating revenue - unaffiliated | CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 6,267 6,046 12,496 11,858
Operating revenue - unaffiliated | Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 1,040 2,095 2,022 3,818
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 (11,924) (10,175) (22,682) (19,457)
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 11,918 9,943 22,672 19,060
Operating revenue - affiliated | CarelonRx | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 4,983 4,597 9,354 8,901
Operating revenue - affiliated | Carelon Services | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total 6,935 5,346 13,318 10,159
Operating revenue - affiliated | Corporate & Other | Operating Segments        
Segment Reporting [Line Items]        
Operating revenue - total $ 6 $ 232 $ 10 $ 397