Restricted Investments

12 Months Ended

Dec. 31, 2016

Investments, Debt and Equity Securities [Abstract]

Pursuant to the regulations governing our Health Plans segment subsidiaries, we maintain statutory deposits and deposits required by government authorities primarily in certificates of deposit and U.S. treasury securities. We also maintain restricted investments as protection against the insolvency of certain capitated providers. The use of these funds is limited to specific purposes as required by regulation in the various states in which we operate, or as protection against the insolvency of capitated providers. We have the ability to hold our restricted investments until maturity, and as a result, we would not expect the value of these investments to decline significantly due to a sudden change in market interest rates. The following table presents the balances of restricted investments:



	December 31,
	2016		2015
	(In millions)
Florida	$	22	$	34
Illinois	3		—
Michigan	1		1
New Mexico	43		43
New York	9		—
Ohio	12		12
Puerto Rico	10		10
Texas	4		4
Utah	4		4
Wisconsin	1		1
Other	1		—
Total Health Plans segment	$	110	$	109

The contractual maturities of our restricted investments, which are designated as held-to-maturity and are carried at amortized cost, which approximates fair value, as of December 31, 2016 are summarized below.



	Amortized Cost		Estimated Fair Value
	(In millions)
Due in one year or less	$	100	$	100
Due after one year through five years	10		10
	$	110	$	110