RESTRUCTURING CHARGES - Additional Information (Details) $ in Millions		3 Months Ended
		Jul. 01, 2016 USD ($)	Jan. 01, 2016 USD ($)	Jul. 03, 2015 USD ($)	Dec. 29, 2017 USD ($)
Q2 2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Number of Positions Eliminated		150
Restructuring Reserve					$ 1.0
Q2 2016 Restructuring Plan [Member] | Operating Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 5.8
Q2 2016 Restructuring Plan [Member] | Network and Security Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2.1
Q2 2016 Restructuring Plan [Member] | Electrical and Electronic Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1.4
Q2 2016 Restructuring Plan [Member] | Utility Power Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		2.2
Q2 2016 Restructuring Plan [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0.1
Q4 2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Number of Positions Eliminated			80
Restructuring Reserve					0.6
Q4 2015 Restructuring Plan [Member] | Operating Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 3.4
Q4 2015 Restructuring Plan [Member] | Network and Security Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1.0
Q4 2015 Restructuring Plan [Member] | Electrical and Electronic Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			2.3
Q4 2015 Restructuring Plan [Member] | Utility Power Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0.1
Q2 2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Number of Positions Eliminated				100
Restructuring Reserve	[1]				$ 0.1
Q2 2015 Restructuring Plan [Member] | Operating Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 5.3
Q2 2015 Restructuring Plan [Member] | Network and Security Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				3.0
Q2 2015 Restructuring Plan [Member] | Electrical and Electronic Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2.2
Restructuring charge adjustment			$ (0.5)
Q2 2015 Restructuring Plan [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 0.1

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