Goodwill and Other Intangibles - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended
Jul. 13, 2013	Dec. 29, 2012	Jul. 13, 2013 Reclassification of Property, Plant and Equipment	Jul. 13, 2013 Lepage Bakeries Inc	Jul. 13, 2013 Lepage Bakeries Inc
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill increased			$ 1.1	$ 0.3	$ 0.3
Additional indefinite lived intangible assets separately identified from goodwill	266.0	186.5
Indefinite lived intangible assets acquired	$ 27.8

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Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

No definition available.

+ Details

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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