Goodwill and Other Intangible Asset (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill.
Goodwill, Beginning Balance	$ 2,616.7	$ 2,289.1
Acquisition-related	155.9	361.4
Foreign currency translation	(79.7)	(33.8)
Goodwill, Ending Balance	2,692.9	2,616.7
Interconnect Products and Assemblies
Goodwill.
Goodwill, Beginning Balance	2,493.0	2,173.7
Acquisition-related	155.9	353.1
Foreign currency translation	(79.7)	(33.8)
Goodwill, Ending Balance	2,569.2	2,493.0
Cable Products and Solutions
Goodwill.
Goodwill, Beginning Balance	123.7	115.4
Acquisition-related		8.3
Goodwill, Ending Balance	$ 123.7	$ 123.7