Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Nominal or face amount used to calculate payment on derivative.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Derivatives and Hedging - Derivative Contracts Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Foreign currency contracts
Derivatives
Derivative, Notional Amount	$ 713		$ 713
Embedded derivatives
Derivatives
Derivative, Notional Amount	24		24
Embedded derivatives \| Total cost of revenue
Derivatives
Net gain (loss) associated with derivative contracts	1	$ (1)	2	$ (2)
Designated as Hedging Instrument \| Commodity contracts
Derivatives
Derivative, Notional Amount	11		11
Not designated as hedging instrument \| Foreign currency contracts
Derivatives
Derivative, Notional Amount	14		14
Not designated as hedging instrument \| Commodity contracts
Derivatives
Derivative, Notional Amount	$ 19		$ 19