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Financial Instruments, Derivatives and Hedging Activities - Foreign currency hedging (Details) - Foreign Exchange Forward [Member] - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Short [Member] | Not Designated as Hedging Instrument
Financial instruments, derivatives and hedging activities
Derivative notional amount	$ 385	$ 410
Long [Member] | Not Designated as Hedging Instrument
Financial instruments, derivatives and hedging activities
Derivative notional amount	225	224
Cash Flow Hedging [Member] | Short [Member] | Designated as Hedging Instrument [Member]
Financial instruments, derivatives and hedging activities
Derivative notional amount	543	401
Cash Flow Hedging [Member] | Long [Member] | Designated as Hedging Instrument [Member]
Financial instruments, derivatives and hedging activities
Derivative notional amount	$ 761	$ 542

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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.

+ References

No definition available.

+ Details

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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
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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- Details

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