Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures

Cash paid for interest and income taxes was as follows:

	Year Ended December 31,
(Dollars in millions)	2014		2013		2012
Interest paid, net of capitalized interest	$	511	$	525	$	478
Income taxes paid, net of refunds	386		442		443