Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2016

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 of derivative instruments as of December 31, 2016 and 2015 which consist solely of foreign exchange contracts:

	Asset Derivatives				Liability Derivatives
(dollars in millions)	2016		2015		2016		2015
Derivatives designated as hedging instruments	$	15	$	4	$	196	$	428
Derivatives not designated as hedging instruments	155		97		158		105

Reclassification out of Accumulated Other Comprehensive Income [Member]

Derivative Instruments, Gain (Loss) [Line Items]

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

The impact from foreign exchange derivative instruments that qualified as cash flow hedges was as follows:

	Year Ended December 31,
(dollars in millions)	2016		2015
Gain (loss) recorded in Accumulated other comprehensive loss	$	75	$	(415	)
Loss reclassified from Accumulated other comprehensive loss into Product sales (effective portion)	$	171	$	234

Other Operating Income (Expense) [Member]

Derivative Instruments, Gain (Loss) [Line Items]

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

The effect on the Consolidated Statement of Operations of foreign exchange contracts not designated as hedging instruments was as follows:

	Year Ended December 31,
(dollars in millions)	2016		2015
Gain recognized in Other income, net	$	56	$	63