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Fair Value Measurement - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2014
Fair Value Measurements [Line Items]
Reversal of contingent consideration	$ 2.3
Contingent consideration	17.9
Current contingent consideration	1.7
Other liabilities	16.2
Minimum
Fair Value Measurements [Line Items]
Fair value of contingent consideration liability associated with future milestone	0
Maximum
Fair Value Measurements [Line Items]
Fair value of contingent consideration liability associated with future milestone	$ 61.0

X

- Definition

Estimated Fair Value Of Contingent Consideration In Event Company Achieves Specified Milestones

+ References

No definition available.

+ Details

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X

- Details

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X

- Definition

Fair Value Measurement with Unobservable Inputs Reconciliation Contingent Liability in Acquisition

+ References

No definition available.

+ Details

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X

- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Contingent Liability in Acquisition, Current

+ References

No definition available.

+ Details

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X

- Definition

Fair Value, Measurement with Unobservable Inputs Reconciliation, Contingent Liability in Acquisition, Noncurrent

+ References

No definition available.

+ Details

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X

- Definition

Amount of (increase) decrease in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e7008-128479

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