MARKET RISKS AND CONCENTRATIONS (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($) employee	Dec. 25, 2016 USD ($)
Concentration Risk [Line Items]
Number of employees	51,300
Period over which there have been no labor-related work stoppages	10 years
United States
Concentration Risk [Line Items]
Number of employees	30,900
Mexico
Concentration Risk [Line Items]
Number of employees	10,200
Aggregate carrying amount of net assets | $	$ 711.2	$ 673.0
U.K. and Europe
Concentration Risk [Line Items]
Number of employees	10,200
Aggregate carrying amount of net assets | $	$ 1,367.7	$ 1,232.8
Trade accounts and other receivables
Concentration Risk [Line Items]
Concentration risk, percentage	4.90%
Net sales
Concentration Risk [Line Items]
Concentration risk, percentage	5.90%
Workforce subject to collective bargaining agreements
Concentration Risk [Line Items]
Concentration risk, percentage	37.80%