Pensions - Weighted Average Assumptions Used to Determine Benefit Obligations (Detail)	Dec. 31, 2016	Dec. 31, 2015
U.S. [Member]
Weighted average assumptions used to determine benefit obligations
Discount rate	3.99%	4.24%
Non-U.S. [Member]
Weighted average assumptions used to determine benefit obligations
Discount rate	2.23%	2.80%
Rate of compensation increase	3.15%	3.15%

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

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant