Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Medical Claims Liability - Schedule of Change in Medical Claims Liability (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]    
Balance, January 1 $ 7,473 $ 6,831
Less: Reinsurance recoverable 20 27
Balance, January 1, net 7,453 6,804
Acquisitions and divestitures 3,746 61
Incurred related to:    
Current year 41,149 28,791
Prior years (422) (555)
Total incurred 40,727 28,236
Paid related to:    
Current year 34,783 22,384
Prior years 5,742 5,289
Total paid 40,525 27,673
Balance at June 30, net 11,401 7,428
Plus: Reinsurance recoverable 17 19
Balance, June 30 $ 11,418 $ 7,447