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Allocation of Pension Plan Assets by Category (Detail) - North America | Dec. 26, 2015 | Dec. 27, 2014
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Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 100.00% | 100.00%
Money Market Funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 2.00% | 2.00%
US Equity Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 9.00% | 8.00%
Fixed Income Securities |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 57.00% | 64.00%
Mutual Funds |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 31.00% | 25.00%
Other |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Percentage of Plan Assets | 1.00% | 1.00%

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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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