v3.26.1
Medical Costs Payable (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]    
Medical costs payable, beginning of period $ 39,337 $ 34,224
Reported medical costs:    
Current year 74,726 73,731
Prior year (1,050) (320)
Changes in premium deficiency and loss contract reserves (187)  
Total reported medical costs 73,489 73,411
Medical payments:    
Payments for current year (44,021) (43,827)
Payments for prior years (29,205) (26,669)
Total medical payments (73,226) (70,496)
Change in medical costs payable included within businesses held for sale 59 (3)
Medical costs payable, end of period $ 39,659 $ 37,136