Medical Claims and Benefits Payable (Tables)

3 Months Ended

Mar. 31, 2018

Other Liabilities Disclosure [Abstract]

Schedule of liability for unpaid claims and claims adjustment expense

The following table provides the details of our medical claims and benefits payable (including amounts payable for the provision of long-term services and supports, or LTSS) as of the dates indicated:



	March 31, 2018		December 31, 2017
	(In millions)
Fee-for-service claims incurred but not paid (IBNP)	$	1,586	$	1,717
Pharmacy payable	127		112
Capitation payable	62		67
Other	248		296
	$	2,023	$	2,192

Components of change in medical claims and benefits payable

The following table presents the components of the change in our medical claims and benefits payable for the periods indicated. The amounts presented for “Components of medical care costs related to: Prior periods” represent the amounts by which our original estimate of medical claims and benefits payable at the beginning of the period were more than the actual amount of the liability based on information (principally the payment of claims) developed since that liability was first reported.



	Three Months Ended March 31,
	2018			2017
	(Dollars in millions)
Medical claims and benefits payable, beginning balance	$	2,192		$	1,929
Components of medical care costs related to:
Current period	3,963			4,253
Prior periods	(241		)	(142		)
Total medical care costs	3,722			4,111

Change in non-risk provider payables	45			(96		)

Payments for medical care costs related to:
Current period	2,498			2,683
Prior periods	1,438			1,335
Total paid	3,936			4,018
Medical claims and benefits payable, ending balance	$	2,023		$	1,926
Benefit from prior period as a percentage of:
Balance at beginning of period	11.0		%	7.4		%
Premium revenue, trailing twelve months	1.3		%	0.8		%
Medical care costs, trailing twelve months	1.4		%	0.9		%