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Employee Benefits - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019 USD ($)
Defined Contribution and Other Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Contribution to the plans	$ 1,100,000
Expected contribution to the plan	3,900,000
U.S. Plans | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan	4,200,000
Contribution to the plans	0
Non-U.S. Plans | Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan	19,300,000
Contribution to the plans	2,700,000
Benefit payments	$ 1,100,000

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+ References

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ 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 (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
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-Name Accounting Standards Codification
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-Section 50
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Amount of contributions expected to be received by defined benefit plan from employer in fiscal year. Excludes contributions paid by employer in current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

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Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964

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-Section 50
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