Financial Instruments Measured at Fair Value - Short-Term Investments by Security Type (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Available For Sale Securities Continuous Unrealized Loss Position [Abstract]
Amortized cost of investments with loss positions	$ 0
Fair value of investments with loss positions		$ 0

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

Name:	us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant