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Debt and Lease Commitments - Additional Information (Detail)			12 Months Ended
	Nov. 28, 2016 USD ($)	Jan. 15, 2015 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) lender	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Multi-currency revolving credit agreement				$ 500,000,000
Number of banks involved in multi-year multi-currency revolving credit agreement | lender				9
Revolving credit facility, expiration date				Dec. 15, 2021
Multi-currency revolving credit agreement, maximum amount				$ 700,000,000
Future minimum payments under non-cancelable operating leases due, total			$ 47,500,000
Rent expense, including payments under operating leases			29,400,000	29,800,000	$ 28,800,000
Interest paid			10,000,000	7,200,000	6,400,000
Capitalized interest expense			$ 700,000	$ 200,000	$ 200,000
Term Notes With Insurance Companies
Debt Instrument [Line Items]
Debt instrument, issued		$ 75,000,000
Debt instrument, principle repayment commencement year		2020
Debt instrument, maturity year		2030	2029	2034
Debt instrument, interest rate		3.52%
November 2016 Term Notes with Insurance Companies
Debt Instrument [Line Items]
Debt instrument, issued	$ 45,000,000
Debt instrument, number of tranches	2
November 2016 Term Notes with Insurance Companies | Tranche One
Debt Instrument [Line Items]
Debt instrument, principle repayment commencement year	2023
Debt instrument, maturity year	2029
Debt instrument, interest rate	2.87%
November 2016 Term Notes with Insurance Companies | Tranche Two
Debt Instrument [Line Items]
Debt instrument, principle repayment commencement year	2028
Debt instrument, maturity year	2034
Debt instrument, interest rate	3.10%

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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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