RESTRUCTURING CHARGES - Additional Information (Details) - Q2 2018 Restructuring Plan [Member] $ in Millions		3 Months Ended		12 Months Ended
		Sep. 28, 2018 USD ($)	Jun. 29, 2018 USD ($)	Dec. 28, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Number of Positions Eliminated			260
Restructuring Reserve	[1]			$ 6.9
Operating Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 10.1
Network and Security Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 2.1
Electrical and Electronic Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1.3
Utility Power Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1.1
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0.2	$ 5.4

[1] Employee-related costs primarily consist of severance benefits provided to employees who have been involuntarily terminated.