Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2021

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 Sheet for derivative instruments as of March 31, 2021 and December 31, 2020:

(dollars in millions)	Balance Sheet Location	March 31, 2021		December 31, 2020
Derivatives designated as hedging instruments:
Foreign exchange contracts	Other assets, current	$	171	$	197
	Other accrued liabilities	105		66
Derivatives not designated as hedging instruments:
Foreign exchange contracts	Other assets, current	$	22	$	44
	Other accrued liabilities	62		32

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 (loss) and on the Condensed Consolidated Statement of Operations for the quarters ended March 31, 2021 and 2020 are presented in the table below. The amounts of gain or loss are attributable to foreign exchange contract activity and are generally recorded as a component of Product sales when reclassified from Accumulated other comprehensive income (loss).

	Quarter Ended March 31,
(dollars in millions)	2021		2020
Loss recorded in Accumulated other comprehensive loss	$	(46)	$	(403)
(Gain) loss reclassified from Accumulated other comprehensive loss into Product sales	(14)		29

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 March 31,
(dollars in millions)	2021		2020
Foreign exchange contracts	$	(8)	$	(39)