BUSINESS SEGMENTS - Changes in Goodwill (Detail) $ in Millions	3 Months Ended
	Apr. 01, 2016 USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 756.5
Goodwill, Purchase Accounting Adjustments	(2.4)
Foreign currency translation	10.8
Goodwill, Ending Balance	764.9
Network and Security Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	393.3
Goodwill, Purchase Accounting Adjustments	0.0
Foreign currency translation	3.1
Goodwill, Ending Balance	396.4
Electrical and Electronic Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	211.9
Goodwill, Purchase Accounting Adjustments	(3.1)
Foreign currency translation	0.7
Goodwill, Ending Balance	209.5
Utility Power Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	151.3
Goodwill, Purchase Accounting Adjustments	0.7
Foreign currency translation	7.0
Goodwill, Ending Balance	$ 159.0