DOCUMENT AND ENTITY INFORMATION Document (USD $) In Billions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2014	Mar. 25, 2015	Jun. 29, 2014
Entity Information [Line Items]
Entity Registrant Name	SMITHFIELD FOODS INC
Entity Central Index Key	0000091388
Current Fiscal Year End Date	--12-28
Entity Filer Category	Non-accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 28, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		1,000
Entity Current Reporting Status	Yes
Entity Voluntary Filers	Yes
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 0