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Weighted-Average Assumptions to Determine Benefit Obligations (Detail) - Pension Plans	Dec. 31, 2017	Dec. 31, 2016
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.68%	4.19%
Expected rate of return on plan assets	5.50%	6.25%
Rate of compensation increase	4.00%	4.00%
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.20%	2.31%
Expected rate of return on plan assets	4.90%	5.14%
Rate of compensation increase	3.31%	3.29%

X

- Definition

Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Assets

+ References

No definition available.

+ Details

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit 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=82843861&loc=d3e1928-114920

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- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit 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)(2)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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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

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