Leases (Tables)

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Future minimum lease payments for capital leases and noncancelable operating leases

Future minimum lease payments with respect to capital leases and operating leases with noncancelable terms in excess of one year were as follows:

	Capital			Operating
(dollars in millions)	Lease Payments			Lease Payments
Year ending December 31:
2015	$	17		$	103
2016		15			90
2017		12			78
2018		8			64
2019		6			57
Thereafter		62			350
Future minimum lease payments		120			742
Less: amount representing interest		(49	)		–
Lease obligations at December 31, 2014	$	71		$	742