BUSINESS SEGMENTS - Segment Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
Segment Reporting Information [Line Items]
Net sales	$ 2,071.7	$ 2,108.5
Operating income (loss)	71.4	74.6
Network and Security Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	1,080.6	1,112.5
Operating income (loss)	63.2	70.9
Electrical and Electronic Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	542.2	566.0
Operating income (loss)	28.7	29.1
Utility Power Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	448.9	430.0
Operating income (loss)	22.0	18.5
Corporate [Member]
Segment Reporting Information [Line Items]
Net sales	0.0	0.0
Operating income (loss)	(42.5)	(43.9)
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net sales	2,071.7	2,108.5
Operating income (loss)	$ 71.4	$ 74.6