Employee Benefit Plans - Summary of Actuarial Assumptions Used to Benefit Obligations (Detail) - Foreign Pension Plan Defined Benefit	Dec. 31, 2016	Dec. 31, 2015
Pension Plans Postretirement And Other Employee Benefits [Line Items]
Discount rate	2.10%	2.60%
Increase in future compensation levels	2.60%	2.90%

Expected rate of compensation increases (for pay-related plans).

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=65897934&loc=d3e1928-114920

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