Pension, Post-Retirement and Post-Employment Plans - Domestic Defined Benefit Post-Retirement Medical and Dental Plan (Details) - Post-retirement Medical Benefits - Domestic	12 Months Ended
Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Post-retirement medical benefits limits	5.00%
Benefit obligation percent to retirees	35.00%
Benefit obligation percent to eligible active participants	39.00%
Benefit obligation percent to other active participants	26.00%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Age of retiree	55 years
Years of service	20 years
Post-retirement medical benefits limits	4.00%
Minimum
Defined Benefit Plan Disclosure [Line Items]
Years of service	10 years
Post-retirement medical benefits limits	2.00%

Defined Benefit Plan, Age of Retiree

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- Definition

Represents limit on annual increase in the Company’s costs for benefits.

+ References

No definition available.

+ Details

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- Definition

Represents projected benefit obligation allocated to fully eligible active participants.

+ References

No definition available.

+ Details

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- Definition

Represents projected benefit obligation allocated to other active participants.

+ References

No definition available.

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- Definition

Represents projected benefit obligation allocated to retirees.

+ References

No definition available.

+ Details

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- Definition

Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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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