Quarterly report pursuant to Section 13 or 15(d)

Medical Claims Liability - Narrative (Details)

v3.20.1
Medical Claims Liability - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Insurance [Abstract]    
Amounts recorded as an adjustment to premium revenues related to minimum HBR and return of premium programs $ (31) $ 8
Short-duration insurance contracts, Incurred but not reported and expected development on reported claims $ 7,527