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DEBT Debt Issuance (Details) - Senior Unsecured Notes, Six Point Six Two Five Percent, Due August 2022 $ in Millions	1 Months Ended
	Aug. 31, 2012 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,000.0
Debt Instrument, Discount Percentage at Issuance	99.50%
Proceeds from Issuance of Long-term Debt, Net of Debt Issuance Costs	$ 981.2
Debt Issuance Cost	$ 18.0
Debt Issuance Costs, Life	10 years

X

- Definition

The percentage of face value received by the company at issuance of the debt at a discount.

+ References

No definition available.

+ Details

Name:	sfd_DebtInstrumentDiscountPercentageAtIssuance
Namespace Prefix:	sfd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The period over which deferred debt issuance costs are amortized.

+ References

No definition available.

+ Details

Name:	sfd_DebtIssuanceCostsLife
Namespace Prefix:	sfd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash inflow from the issuance of long-term debt, net of debt issuance costs.

+ References

No definition available.

+ Details

Name:	sfd_ProceedsFromIssuanceOfLongTermDebtNetOfDebtIssuanceCosts
Namespace Prefix:	sfd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: