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Postretirement Plans - Summary of Weighted-Average Assumptions Used to Determine Projected Benefit Obligation (Detail) | Dec. 28, 2013 | Dec. 29, 2012
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Defined Benefit Plan Disclosure [Line Items] |  |
Discount rate | 5.10% | 4.30%
U.S. Postretirement Health Care Plans [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Discount rate | 4.20% | 3.20%

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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Details
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