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Medical Costs Payable (Tables)
6 Months Ended
Jun. 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 six months ended June 30:
(in millions)20222021
Medical costs payable, beginning of period$24,483 $21,872 
Acquisitions171 46 
Reported medical costs:
Current year104,936 92,570 
Prior years(320)(1,120)
Total reported medical costs104,616 91,450 
Medical payments:
Payments for current year
(78,937)(69,808)
Payments for prior years(21,355)(18,429)
Total medical payments(100,292)(88,237)
Medical costs payable, end of period$28,978 $25,131