BUSINESS ACQUISITIONS (Pro Forma Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Sep. 07, 2017	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Moy Park
Business Acquisition [Line Items]
Net Sales	$ 722,387	$ 1,273,932		$ 1,947,441	$ 572,568
Net Income	$ 34,039	$ 23,486		40,388	17,010
Tyson Mexico
Business Acquisition [Line Items]
Net Sales			$ 10,773,662	10,311,325	11,157,328
Net Income			$ 664,776	$ 401,630	$ 631,800
Net income attributable to Pilgrim's Pride Corporation per common share - diluted (in dollars per share)			$ 2.67	$ 1.58	$ 2.44