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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%

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- 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 + Details
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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 + Details
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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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