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EQUITY Stock Held in Trust (Details) (USD $)	Apr. 28, 2013
Supplemental Pension Plan
Common Stock, Shares Held in Employee Trust, Shares	2,616,687
Common Stock, Shares Held in Employee Trust, Per Share	$ 23.75
Director Fee Deferral Program
Common Stock, Shares Held in Employee Trust, Shares	330,180
Common Stock, Shares Held in Employee Trust, Per Share	$ 20.17

X

- Definition

The per share value of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

+ References

No definition available.

+ Details

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Namespace Prefix:	sfd_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of common stock held in a trust that has been set up specifically to accumulate stock for the sole purpose of distribution to participating employees but not yet earned.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 40

-Section 25

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6418455&loc=d3e16701-113920

+ Details

Name:	us-gaap_CommonStockSharesHeldInEmployeeTrustShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant