Employee Benefits - Estimated Future Benefit Payments (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2014	$ 30,068
2015	31,194
2016	32,589
2017	34,115
2018	35,483
2019-2023	188,512
Required Company Contributions in the Following Year (2015)	4,156
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2014	28,045
2015	27,710
2016	28,893
2017	31,459
2018	32,259
2019-2023	169,579
Required Company Contributions in the Following Year (2015)	16,183
Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2014	5,085
2015	5,285
2016	5,522
2017	5,784
2018	6,043
2019-2023	33,627
Required Company Contributions in the Following Year (2015)	$ 5,085

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Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a 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 (f)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

+ Details

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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