Investments of Insurance Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

A summary of the insurance subsidiaries’ investments at December 31 follows (dollars in millions):

	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

	2013
	Amortized Cost		Unrealized Amounts					Fair Value
			Gains		Losses
Debt securities:
States and municipalities	$	404	$	11	$	(3	)	$	412
Money market funds		94		—		—			94
		498		11		(3	)		506
Equity securities		2		2		—			4
	$	500	$	13	$	(3	)		510
Amounts classified as current assets									(62	)
Investment carrying value								$	448

Schedule of Maturities of Investments

Scheduled maturities of investments in debt securities at December 31, 2014 were as follows (dollars in millions):

	Amortized Cost		Fair Value
Due in one year or less	$	82	$	82
Due after one year through five years		229		234
Due after five years through ten years		109		116
Due after ten years		118		123
	$	538	$	555