Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivatives Instruments in Statements of Financial Performance and Financial Position

(Dollars in millions)	September 30, 2015			December 31, 2014			Classification
Derivative assets not designated as hedges:
Foreign currency forward contracts	$	9		$	12		Other Current Assets
Derivative liabilities not designated as hedges:
Foreign currency forward contracts	(26		)	(17		)	Other Current Liabilities
Cross-currency swap contracts	—			(5		)	Other Liabilities

The effect of derivative instruments designated as fair value hedges and those not designated as hedges on the Condensed Consolidated Statements of Operations was as follows:

	Gain (Loss) Recognized in Income
	Three Months Ended September 30,				Nine Months Ended September 30,
(Dollars in millions)	2015		2014		2015		2014		Classification
Derivatives not designated as hedges:
Foreign currency forward contracts	(32	)	(5	)	(88	)	(12	)	Other, Net
Cross-currency swap contracts	—		6		13		7		Other, Net