Medical Claims and Benefits Payable (Tables)

9 Months Ended

Sep. 30, 2017

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:



	September 30, 2017		December 31, 2016
	(In millions)
Fee-for-service claims incurred but not paid (IBNP)	$	1,681	$	1,352
Pharmacy payable	125		112
Capitation payable	57		37
Other	615		428
	$	2,478	$	1,929

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 less (more) than the actual amount of the liability based on information (principally the payment of claims) developed since that liability was first reported.



	Nine Months Ended September 30,
	2017			2016
	(Dollars in millions)
Medical claims and benefits payable, beginning balance	$	1,929		$	1,685
Components of medical care costs related to:
Current period	12,813			11,120
Prior periods	9			(190		)
Total medical care costs	12,822			10,930

Change in non-risk provider payables	172			70

Payments for medical care costs related to:
Current period	10,944			9,536
Prior periods	1,501			1,278
Total paid	12,445			10,814
Medical claims and benefits payable, ending balance	$	2,478		$	1,871
Benefit from prior period as a percentage of:
Balance at beginning of period	(0.5		)%	11.3		%
Premium revenue, trailing twelve months	—		%	1.2		%
Medical care costs, trailing twelve months	(0.1		)%	1.3		%