XML 45 R33.htm IDEA: XBRL DOCUMENT v3.24.2
Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Schedule of Premium Revenue by Health Plan Type [Line Items]    
Amounts due to government agencies, risk adjustment and part d risk sharing $ 91 $ 66
Risk adjustment payable 348 201
Risk adjustment receivable 363 241
Risk adjustment, net receivable $ 15 $ 40
Maturity period (less than) 15 years  
Structured Securities    
Schedule of Premium Revenue by Health Plan Type [Line Items]    
Average maturity period (less than) 15 years