Capital Stock - Accumulated Other Comprehensive Loss (Details) - 2.5% (€650 million) senior notes due 2022 - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation gains (losses), net of tax	$ (17)	$ (15)
Foreign currency translation gains (losses), before tax	$ (22)	$ (19)
Debt, interest rate (percentage)	2.50%

Cumulative translation adjustment in other comprehensive income reflecting gains or losses on foreign currency derivatives those are designated as, and are effective as, hedges of a net investment in a foreign entity, before tax effect.

No definition available.

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- Definition

Cumulative Translation Adjustment for Net Investment Hedges, Net of Tax

+ 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

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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