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Pensions - Summary of Weighted-Average Assumptions Used in Determining Benefit Obligations (Details)	Dec. 31, 2017	Dec. 31, 2016
U.S. Benefit Plans
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	3.70%	4.30%
Non-U.S. Benefit Plan
Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]
Discount rate	2.50%	2.60%

X

- Definition

Schedule of Net Periodic Benefit Costs Weighted Average Assumptions [Line Items]

+ References

No definition available.

+ Details

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X

- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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