Derivatives - BS Location (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	$ 84	$ 44
Fair Value of Derivative Instruments, Liabilities	63	106
Derivatives designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	62	31
Fair Value of Derivative Instruments, Liabilities	48	92
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	36	14
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Other assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	21	10
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	38	67
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Other liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	10	25
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	1,656	1,630
Derivatives designated as hedging instruments \| Foreign currency exchange contracts \| Noncurrent balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	685	669
Derivatives designated as hedging instruments \| Interest rate contracts \| Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	5	7
Derivatives designated as hedging instruments \| Interest rate contracts \| Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	403	403
Derivatives not designated as hedging instruments
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	22	13
Fair Value of Derivative Instruments, Liabilities	15	14
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts \| Other current assets
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Assets	22	13
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts \| Other current liabilities
Location and Fair Value Amount of Derivative Instruments
Fair Value of Derivative Instruments, Liabilities	15	14
Derivatives not designated as hedging instruments \| Foreign currency exchange contracts \| Current balance sheet location
Location and Fair Value Amount of Derivative Instruments
Derivative Notional Amount	$ 3,487	$ 3,166

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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