Reconciliation of the Change in Fair Value of the Pension Plan Assets Calculated based on Level 3 Inputs (Detail) (Pension Asset, USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 28, 2013
Pension Asset
Schedule of Pension Plan Assets by Fair Value [Line Items]
Purchases, sales, and settlements	$ 7
Balance at December 28, 2013	$ 7

Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph c

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration