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Medical Costs Payable (Tables)
9 Months Ended
Sep. 30, 2023
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)20232022
Medical costs payable, beginning of period$29,056 $24,483 
Acquisitions177 
Reported medical costs:
Current year180,423 157,601 
Prior years(760)(350)
Total reported medical costs179,663 157,251 
Medical payments:
Payments for current year
(149,671)(130,788)
Payments for prior years(26,257)(22,059)
Total medical payments(175,928)(152,847)
Medical costs payable, end of period$32,792 $29,064