XML 68 R52.htm IDEA: XBRL DOCUMENT v3.19.3
Insurance and Contractholder Liabilities - Integrated Medical - Activity (Details) - Integrated Medical [Member] - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Medical Claims Payable Activity [Abstract]    
Beginning balance, unpaid claims, gross $ 2,697 $ 2,420
Less: Reinsurance and other amounts recoverable 264 262
Beginning balance, unpaid claims, net 2,433 2,158
Incurred claims related to:    
Current year 18,169 15,831
Prior years (159) (158)
Total incurred 18,010 15,673
Paid claims related to:    
Current year 15,555 13,593
Prior years 2,160 1,754
Total paid 17,715 15,347
Ending balance, unpaid claims, net 2,728 2,484
Add: Reinsurance and other amounts recoverable 333 236
Ending balance, unpaid claims, gross 3,061 2,720
Total of incurred but not reported liabilities plus expected claim development on reported claims, including reported claims in process $ 2,800 $ 2,500