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Employee Benefit Plans Weighted Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Postemployment
Discount rate	3.40%	3.60%
Rate of compensation increase	3.00%	3.00%
Involuntary turnover rate	2.00%	1.80%
Discount rate	3.40%	3.50%	3.80%
Rate of compensation increase	3.00%	3.00%	3.70%
Involuntary turnover rate	2.00%	1.30%	1.00%
Foreign Pension Plan
Pension Benefit
Discount rate	2.00%	2.40%
Rate of compensation increase	3.30%	3.20%
Discount rate	2.40%	2.30%	3.00%
Rate of compensation increase	3.20%	3.30%	3.20%
Expected return on plan assets	3.00%	3.30%	3.40%

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- Definition

Postemployment Benefit, Assumptions Used Calculating Benefit Obligation, Discount Rate

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Postemployment Benefits, Assumptions Used in Calculations [Abstract]

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- 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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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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The interest rate used to adjust for the time value of money.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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