v3.26.3
Segment Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
segment
Sep. 30, 2025
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | segment     4  
Number of reportable segments | segment     4  
Segment Reporting [Line Items]        
Premium and service revenues $ 45,105 $ 44,898 $ 134,135 $ 129,854
Premium tax 5,542 4,792 20,035 15,198
Total external revenues 50,647 49,690 154,170 145,052
Total revenues 50,647 49,690 154,170 145,052
Medical costs 41,128 40,902 118,460 116,213
Cost of services 675 651 2,106 1,990
Other operating expenses 9,151 15,091 30,852 32,727
Other income (expense) 185 280 711 693
Earnings (loss) before income tax (122) (6,674) 3,463 (5,185)
Segment gross margin 3,302 3,345 13,569 11,651
Operating Segments        
Segment Reporting [Line Items]        
Total revenues 3,749 4,194 11,994 12,325
Eliminations        
Segment Reporting [Line Items]        
Total revenues (3,749) (4,194) (11,994) (12,325)
Premium        
Segment Reporting [Line Items]        
Premium and service revenues 44,370 44,126 131,839 127,578
Service        
Segment Reporting [Line Items]        
Premium and service revenues 735 772 2,296 2,276
Premium and service revenues        
Segment Reporting [Line Items]        
Premium and service revenues 45,105 44,898 134,135 129,854
Medicaid        
Segment Reporting [Line Items]        
Total revenues 29,581 27,963 90,436 82,391
Medical costs 22,476 21,614 65,788 63,038
Cost of services 35 25 79 74
Segment gross margin 1,528 1,532 4,534 4,081
Medicaid | Operating Segments        
Segment Reporting [Line Items]        
Premium tax 5,542 4,792 20,035 15,198
Total external revenues 29,581 27,963 90,436 82,391
Total revenues 0 0 0 0
Medicaid | Eliminations        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Medicaid | Premium | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 24,004 23,146 70,322 67,118
Medicaid | Service | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 35 25 79 75
Medicaid | Premium and service revenues | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 24,039 23,171 70,401 67,193
Medicare        
Segment Reporting [Line Items]        
Total revenues 11,263 9,391 32,646 27,600
Medical costs 10,564 8,853 29,228 24,995
Cost of services 0 0 0 0
Segment gross margin 699 538 3,418 2,605
Medicare | Operating Segments        
Segment Reporting [Line Items]        
Premium tax 0 0 0 0
Total external revenues 11,263 9,391 32,646 27,600
Total revenues 0 0 0 0
Medicare | Eliminations        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Medicare | Premium | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 11,263 9,391 32,646 27,600
Medicare | Service | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 0 0 0 0
Medicare | Premium and service revenues | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 11,263 9,391 32,646 27,600
Commercial        
Segment Reporting [Line Items]        
Total revenues 8,700 10,992 27,612 31,211
Medical costs 7,742 9,876 22,349 26,607
Cost of services 0 0 0 0
Segment gross margin 958 1,116 5,263 4,604
Commercial | Operating Segments        
Segment Reporting [Line Items]        
Premium tax 0 0 0 0
Total external revenues 8,700 10,992 27,612 31,211
Total revenues 0 0 0 0
Commercial | Eliminations        
Segment Reporting [Line Items]        
Total revenues 0 0 0 0
Commercial | Premium | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 8,699 10,991 27,609 31,209
Commercial | Service | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 1 1 3 2
Commercial | Premium and service revenues | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 8,700 10,992 27,612 31,211
Other/Eliminations        
Segment Reporting [Line Items]        
Total revenues 1,103 1,344 3,476 3,850
Medical costs 346 559 1,095 1,573
Cost of services 640 626 2,027 1,916
Segment gross margin 117 159 354 361
Other/Eliminations | Operating Segments        
Segment Reporting [Line Items]        
Premium tax 0 0 0 0
Total external revenues 1,103 1,344 3,476 3,850
Total revenues 3,749 4,194 11,994 12,325
Other/Eliminations | Eliminations        
Segment Reporting [Line Items]        
Total revenues (3,749) (4,194) (11,994) (12,325)
Other/Eliminations | Premium | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 404 598 1,262 1,651
Other/Eliminations | Service | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues 699 746 2,214 2,199
Other/Eliminations | Premium and service revenues | Operating Segments        
Segment Reporting [Line Items]        
Premium and service revenues $ 1,103 $ 1,344 $ 3,476 $ 3,850