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Medical Costs Payable (Tables)
9 Months Ended
Sep. 30, 2022
Insurance [Abstract]  
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense
The following table shows the components of the change in medical costs payable for the nine months ended September 30:
(in millions)20222021
Medical costs payable, beginning of period$24,483 $21,872 
Acquisitions177 88 
Reported medical costs:
Current year157,601 140,052 
Prior years(350)(1,300)
Total reported medical costs157,251 138,752 
Medical payments:
Payments for current year
(130,788)(116,135)
Payments for prior years(22,059)(18,659)
Total medical payments(152,847)(134,794)
Medical costs payable, end of period$29,064 $25,918