Goodwill and Other Intangible Assets - Additional Information (Detail)	6 Months Ended
Mar. 28, 2015
Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized acquired intangible assets with definite lives useful period (in years)	3 years
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized acquired intangible assets with definite lives useful period (in years)	7 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration