Reportable Business Segments and International Operations, Net sales by segment (Details) $ in Millions		12 Months Ended
	Jan. 01, 2022 segment individual	Dec. 31, 2023 USD ($) individual segment	Dec. 31, 2022 USD ($) individual segment	Dec. 31, 2021 USD ($) segment
Segment reporting information
Number of reportable business segments | segment	3	3	3	2
Number of segment managers | individual	3	3	3
Net sales		$ 12,554.7	$ 12,623.0	$ 10,876.3
Communications Solutions, Interconnect and Sensor Systems, Harsh Environment Solutions [Member]
Segment reporting information
Number of reportable business segments in which businesses previously reported in the Interconnect Products and Assemblies segment have now been aligned to. | segment	1
Operating Segment
Segment reporting information
Net sales		12,554.7	12,623.0	10,876.3
Operating Segment | Harsh Environment Solutions
Segment reporting information
Net sales		3,530.8	3,107.2	2,752.2
Operating Segment | Communications Solutions
Segment reporting information
Net sales		4,912.8	5,652.4	4,832.1
Operating Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales		4,111.1	3,863.4	3,292.0
Inter-Segment
Segment reporting information
Net sales		159.2	174.7	169.3
Inter-Segment | Harsh Environment Solutions
Segment reporting information
Net sales		90.8	78.1	70.6
Inter-Segment | Communications Solutions
Segment reporting information
Net sales		50.2	79.4	75.0
Inter-Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales		$ 18.2	$ 17.2	$ 23.7