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DOCUMENT AND ENTITY INFORMATION	9 Months Ended
	Jan. 27, 2013	Mar. 01, 2013
Entity Information [Line Items]
Entity Registrant Name	SMITHFIELD FOODS INC
Entity Central Index Key	0000091388
Current Fiscal Year End Date	--04-28
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jan. 27, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		138,763,415

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