Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Instruments, Gain (Loss) [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table summarizes the fair value and presentation in the Condensed Consolidated Balance Sheets for derivative instruments as of September 30, 2018 and December 31, 2017:

(dollars in millions)	Balance Sheet Location	September 30, 2018			December 31, 2017
Derivatives designated as hedging instruments:
Foreign exchange contracts	Asset Derivatives:
	Other assets, current	$	36		$	77
	Other assets	46			101
	Total asset derivatives	$	82		$	178
	Liability Derivatives:
	Accrued liabilities	(25		)	(10		)
	Other long-term liabilities	(35		)	(8		)
	Total liability derivatives	$	(60	)	$	(18	)
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Asset Derivatives:
	Other assets, current	48			70
	Other assets	20			5
	Total asset derivatives	$	68		$	75
	Liability Derivatives:
	Accrued liabilities	(55		)	(57		)
	Other long-term liabilities	(3		)	(3		)
	Total liability derivatives	$	(58	)	$	(60	)

Reclassification out of Accumulated Other Comprehensive Income [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Instruments, Gain (Loss) [Table Text Block]

The effect of cash flow hedging relationships on accumulated other comprehensive income for the quarter and nine months ended September 30, 2018 and 2017 are presented in the table below. The amounts of gain or (loss) are attributable to foreign exchange contract activity and are recorded as a component of Product sales when reclassified from accumulated other comprehensive income.

	Quarter Ended September 30,					Nine Months Ended September 30,
(dollars in millions)	2018		2017			2018			2017
Gain (loss) recorded in Accumulated other comprehensive loss	$	95	$	310		$	(105	)	$	440
Loss (gain) reclassified from Accumulated other comprehensive loss into Product sales	2		(24		)	(26		)	(14		)

Other Income [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Instruments, Gain (Loss) [Table Text Block]

The effect of derivatives not designated as hedging instruments within Other income, net, on the Condensed Consolidated Statement of Operations was as follows:

	Quarter Ended September 30,				Nine Months Ended September 30,
(dollars in millions)	2018		2017		2018		2017
Foreign exchange contracts	$	16	$	10	$	86	$	50