Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueGoodsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sfd_PackagedMeatsSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sfd_HogProductionSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sfd_InternationalSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=sfd_FreshPorkSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

REPORTABLE SEGMENT Sales and Operating Profit (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2016	Jun. 28, 2015	Jul. 03, 2016	Jun. 28, 2015	Jan. 03, 2016
Segment Reporting Information [Line Items]
Segment sales	$ 4,056.7	$ 4,047.2	$ 7,857.3	$ 8,227.5
Sales	3,492.6	3,486.6	6,798.9	7,103.1
Operating profit	237.1	186.1	447.2	374.3
Goodwill	1,619.4		1,619.4		$ 1,619.5
Packaged Meats Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	1,656.7	1,545.6	3,402.0	3,255.2
Operating profit	172.9	176.3	380.0	348.8
Hog Production Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	676.4	784.6	1,296.7	1,591.0
Operating profit	15.2	39.1	(68.3)	32.7
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Operating profit	(28.1)	(29.0)	(55.7)	(56.0)
International Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	371.4	352.5	688.2	682.7
Operating profit	19.2	14.8	33.4	30.7
Fresh Pork Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	1,352.2	1,364.5	2,470.4	2,698.6
Operating profit	57.9	(15.1)	157.8	18.1
Intersegment Eliminations
Segment Reporting Information [Line Items]
Segment sales	(564.1)	(560.6)	(1,058.4)	(1,124.4)
Intersegment Eliminations \| Packaged Meats Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	(0.1)	(0.1)	(0.1)	(0.1)
Intersegment Eliminations \| Hog Production Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	(534.7)	(533.7)	(1,002.8)	(1,072.5)
Intersegment Eliminations \| International Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	(10.4)	(12.7)	(21.4)	(23.0)
Intersegment Eliminations \| Fresh Pork Segment [Member]
Segment Reporting Information [Line Items]
Segment sales	$ (18.9)	$ (14.1)	$ (34.1)	$ (28.8)