Revenues - Major Product Category (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 463,526	$ 500,140
Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	212,213	207,083
Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	251,313	293,057
Cable & Connectivity
Disaggregation of Revenue [Line Items]
Revenues	371,888	392,179
Cable & Connectivity | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	204,836	201,262
Cable & Connectivity | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	167,052	190,917
Networking, Software & Security
Disaggregation of Revenue [Line Items]
Revenues	91,638	107,961
Networking, Software & Security | Enterprise Solutions
Disaggregation of Revenue [Line Items]
Revenues	7,377	5,821
Networking, Software & Security | Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenues	$ 84,261	$ 102,140