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Revenue Recognition - Schedule of Estimated Amount of Deferred Revenue and Customer Advances (Detail) $ in Thousands	Sep. 29, 2018 USD ($)
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 224,851
In One Year or Less [Member]
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 186,485
Deferred revenue and customer advances recognition period	1 year
In 13-24 Months [Member]
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 26,316
Deferred revenue and customer advances recognition period	1 year
In 25 Months and Beyond [Member]
Revenue Recognition [Line Items]
Deferred revenue and customer advances expected to be recognized	$ 12,050
Deferred revenue and customer advances recognition period	0 years

X

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045

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X

- Definition

Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130556-203045

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X

- Definition

Revenue recognition.

+ References

No definition available.

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