Reportable Business Segments, Net sales reconciliation by segment, and net sales to segment operating income reconciliation, including segment operating expenses (Details) $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) segment entity	Mar. 31, 2024 USD ($)
Segment reporting information
Number of reportable business segments | segment	3
Number of segment managers | entity	3
Net sales	$ 4,811.0	$ 3,256.3
Operating income	1,024.8	684.8
Harsh Environment Solutions
Segment reporting information
Net sales	1,268.2	916.0
Communications Solutions
Segment reporting information
Net sales	2,413.7	1,265.7
Interconnect and Sensor Systems
Segment reporting information
Net sales	1,129.1	1,074.6
Operating Segment
Segment reporting information
Net sales	4,863.4	3,292.2
Less: Segment operating expenses	3,634.5	2,530.3
Operating income	1,176.5	726.0
Operating Segment | Harsh Environment Solutions
Segment reporting information
Net sales	1,295.0	935.6
Less: Segment operating expenses	957.0	671.6
Operating income	311.2	244.4
Operating Segment | Communications Solutions
Segment reporting information
Net sales	2,429.5	1,276.9
Less: Segment operating expenses	1,752.9	979.5
Operating income	660.8	286.2
Operating Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales	1,138.9	1,079.7
Less: Segment operating expenses	924.6	879.2
Operating income	204.5	195.4
Inter-Segment
Segment reporting information
Net sales	52.4	35.9
Inter-Segment | Harsh Environment Solutions
Segment reporting information
Net sales	26.8	19.6
Inter-Segment | Communications Solutions
Segment reporting information
Net sales	15.8	11.2
Inter-Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales	$ 9.8	$ 5.1