Financial Instruments - Foreign Exchange Risk Management (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 176	$ 207
Average Maturity of Foreign Exchange Hedging Contracts - within Three Months	72.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Three and Six Months	11.00%
Average Maturity of Foreign Exchange Hedging Contracts - within Six and Twelve Months	13.00%
Average Maturity of Foreign Exchange Hedging Contracts - greater than twelve months	4.00%

Average Maturity of Foreign Exchange Hedging Contracts - within Six and Twelve Months

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- Definition

Average Maturity of Foreign Exchange Hedging Contracts - within Three and Six Months Outstanding average forward exchange and purchase option contracts that mature within six months.

+ References

No definition available.

+ Details

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- Definition

Average Maturity of Foreign Exchange Hedging Contracts - within Three Months. Outstanding average forward exchange and purchase option contracts that mature within three months.

+ References

No definition available.

+ Details

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- Definition

Average Maturity of Foreign Exchange Hedging Contracts - greater than twelve months

+ References

No definition available.

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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.

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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=109980867&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=109980867&loc=SL5579245-113959

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