Medical Costs Payable (Tables)

9 Months Ended

Sep. 30, 2019

Insurance [Abstract]

Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]

The following table shows the components of the change in medical costs payable for the nine months ended September 30:

(in millions)	2019			2018
Medical costs payable, beginning of period	$	19,891		$	17,871
Acquisitions	868			333
Reported medical costs:
Current year	117,624			108,658
Prior years	(460		)	(210		)
Total reported medical costs	117,164			108,448
Medical payments:
Payments for current year	(99,487		)	(90,348		)
Payments for prior years	(17,497		)	(16,454		)
Total medical payments	(116,984		)	(106,802		)
Medical costs payable, end of period	$	20,939		$	19,850