Quarterly report pursuant to Section 13 or 15(d)

Medical Claims Liability - Schedule of Change in Medical Claims Liability (Details)

v3.21.2
Medical Claims Liability - Schedule of Change in Medical Claims Liability (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]    
Balance, January 1 $ 12,438 $ 7,473
Less: Reinsurance recoverable 23 20
Balance, January 1, net 12,415 7,453
Acquisitions and divestitures 0 3,872
Incurred related to:    
Current year 74,736 64,105
Prior years (1,526) (446)
Total incurred 73,210 63,659
Paid related to:    
Current year 62,205 56,074
Prior years 9,344 6,032
Total paid 71,549 62,106
Balance at September 30, net 14,076 12,878
Plus: Reinsurance recoverable 23 21
Balance, September 30 $ 14,099 $ 12,899