Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2019

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 June 30, 2019 and December 31, 2018:

(dollars in millions)	Balance Sheet Location	June 30, 2019			December 31, 2018
Derivatives designated as hedging instruments:
Foreign exchange contracts	Asset Derivatives:
	Other assets, current	$	16		$	10
	Other assets	19			12
	Total asset derivatives	$	35		$	22
	Liability Derivatives:
	Accrued liabilities	(59		)	(83		)
	Other long-term liabilities	(90		)	(111		)
	Total liability derivatives	$	(149	)	$	(194	)
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Asset Derivatives:
	Other assets, current	$	79		$	44
	Other assets	7			19
	Total asset derivatives	$	86		$	63
	Liability Derivatives:
	Accrued liabilities	(80		)	(89		)
	Other long-term liabilities	(2		)	(3		)
	Total liability derivatives	$	(82	)	$	(92	)

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 and on the Condensed Consolidated Statement of Operations for the quarters and six months ended June 30, 2019 and 2018 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 June 30,					Six Months Ended June 30,
(dollars in millions)	2019		2018			2019		2018
Gain (loss) recorded in Accumulated other comprehensive loss	$	21	$	(245	)	$	28	$	(200	)
Loss (gain) reclassified from Accumulated other comprehensive loss into Product sales	16		(1		)	20		(28		)

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 June 30,				Six Months Ended June 30,
(dollars in millions)	2019		2018		2019		2018
Foreign exchange contracts	$	18	$	19	$	36	$	70