Revenue Recognition, Disaggregation of Net Sales (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue recognition
Net sales	$ 1,862.0	$ 1,958.5
United States
Revenue recognition
Net sales	615.4	578.9
China
Revenue recognition
Net sales	417.7	523.2
Other foreign locations
Revenue recognition
Net sales	828.9	856.4
End customers and contract manufacturers
Revenue recognition
Net sales	1,554.7	1,665.7
Distributors and resellers
Revenue recognition
Net sales	307.3	292.8
Interconnect Products and Assemblies
Revenue recognition
Net sales	1,779.0	1,862.7
Interconnect Products and Assemblies | United States
Revenue recognition
Net sales	571.4	534.0
Interconnect Products and Assemblies | China
Revenue recognition
Net sales	416.9	522.4
Interconnect Products and Assemblies | Other foreign locations
Revenue recognition
Net sales	790.7	806.3
Interconnect Products and Assemblies | End customers and contract manufacturers
Revenue recognition
Net sales	1,488.6	1,592.8
Interconnect Products and Assemblies | Distributors and resellers
Revenue recognition
Net sales	290.4	269.9
Cable Products and Solutions
Revenue recognition
Net sales	83.0	95.8
Cable Products and Solutions | United States
Revenue recognition
Net sales	44.0	44.9
Cable Products and Solutions | China
Revenue recognition
Net sales	0.8	0.8
Cable Products and Solutions | Other foreign locations
Revenue recognition
Net sales	38.2	50.1
Cable Products and Solutions | End customers and contract manufacturers
Revenue recognition
Net sales	66.1	72.9
Cable Products and Solutions | Distributors and resellers
Revenue recognition
Net sales	$ 16.9	$ 22.9