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Commitments and Contingencies - Summary of Contingent Consideration Charges Recorded to the Consolidated Statement of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013
Other Contingencies And Commitments [Line Items]
Contingent consideration - compensation expense	$ 29,388	$ 0	$ 58,874
Contingent consideration - fair value adjustments	799		10,839
Contingent consideration total	30,187		69,713
Interlace Medical, Inc. [Member]
Other Contingencies And Commitments [Line Items]
Contingent consideration - fair value adjustments	799		10,839
Contingent consideration total	799		10,839
TCT International Co., Ltd. [Member]
Other Contingencies And Commitments [Line Items]
Contingent consideration - compensation expense	29,388		58,874
Contingent consideration total	$ 29,388		$ 58,874