Investments of Insurance Subsidiaries (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

A summary of our insurance subsidiaries’ investments at September 30, 2015 and December 31, 2014 follows (dollars in millions):

	September 30, 2015
	Amortized Cost		Unrealized Amounts					Fair Value
			Gains		Losses
Debt securities:
States and municipalities	$	429	$	16	$	(1	)	$	444
Money market funds		13		—		—			13
		442		16		(1	)		457
Equity securities		1		2		—			3
	$	443	$	18	$	(1	)		460
Amounts classified as current assets									(51	)
Investment carrying value								$	409

	December 31, 2014
	Amortized Cost		Unrealized Amounts					Fair Value
			Gains		Losses
Debt securities:
States and municipalities	$	477	$	18	$	(1	)	$	494
Money market funds		61		—		—			61
		538		18		(1	)		555
Equity securities		1		2		—			3
	$	539	$	20	$	(1	)		558
Amounts classified as current assets									(64	)
Investment carrying value								$	494

Schedule of Maturities of Investments

Scheduled maturities of investments in debt securities at September 30, 2015 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	61	$	61
Due after one year through five years		172		177
Due after five years through ten years		108		114
Due after ten years		101		105
	$	442	$	457