v2.4.0.8

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill, intangible assets and other long-lived assets	$ 0	$ 0	$ 0	$ 0
Warranty period, minimum, long-term sales agreement			3 years
Warranty period, maximum, long-term sales agreement			6 years
Options to purchase of shares of common stock	7.4	6.4	7.0	6.4
Patents [Member]
Summary Of Significant Accounting Policies [Line Items]
Weighted average number of years until the next renewal			2 years
Trademarks [Member]
Summary Of Significant Accounting Policies [Line Items]
Weighted average number of years until the next renewal			6 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Warranty period for defects in material and workmanship			6 months
Product life estimate			3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Warranty period for defects in material and workmanship			1 year
Product life estimate			6 years

X

- Definition

Long-term sales agreement warranty maximum.

+ References

No definition available.

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X

- Definition

Long-term sales agreement warranty minimum.

+ References

No definition available.

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X

- Definition

Estimated useful life of products.

+ References

No definition available.

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- Details

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X

- Definition

Warranty period for defects in material and workmanship.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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X

- Definition

Weighted average period before the next renewal or extension (both explicit and implicit) for intangible assets that have been renewed or extended, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (d)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

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