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	6 Months Ended
Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) segment entity	Jun. 30, 2024 USD ($)
Segment reporting information
Number of reportable business segments \| segment			3
Number of segment managers \| entity			3
Net sales	$ 5,650.3	$ 3,609.7	$ 10,461.3	$ 6,866.0
Operating income	1,418.8	698.8	2,443.6	1,383.7
Harsh Environment Solutions
Segment reporting information
Net sales	1,445.2	1,046.0	2,713.4	1,962.0
Communications Solutions
Segment reporting information
Net sales	2,909.8	1,444.6	5,323.5	2,710.3
Interconnect and Sensor Systems
Segment reporting information
Net sales	1,295.3	1,119.1	2,424.4	2,193.7
Operating Segment
Segment reporting information
Net sales	5,720.4	3,651.4	10,583.8	6,943.5
Less: Segment operating expenses	4,143.6	2,796.2	7,778.1	5,326.4
Operating income	1,506.7	813.5	2,683.2	1,539.6
Operating Segment \| Harsh Environment Solutions
Segment reporting information
Net sales	1,475.6	1,067.9	2,770.6	2,003.5
Less: Segment operating expenses	1,081.5	786.4	2,038.5	1,457.9
Operating income	363.7	259.6	674.9	504.1
Operating Segment \| Communications Solutions
Segment reporting information
Net sales	2,934.0	1,458.0	5,363.5	2,734.9
Less: Segment operating expenses	2,019.1	1,094.0	3,772.0	2,073.5
Operating income	890.7	350.6	1,551.5	636.8
Operating Segment \| Interconnect and Sensor Systems
Segment reporting information
Net sales	1,310.8	1,125.5	2,449.7	2,205.1
Less: Segment operating expenses	1,043.0	915.8	1,967.6	1,795.0
Operating income	252.3	203.3	456.8	398.7
Inter-Segment
Segment reporting information
Net sales	70.1	41.7	122.5	77.5
Inter-Segment \| Harsh Environment Solutions
Segment reporting information
Net sales	30.4	21.9	57.2	41.5
Inter-Segment \| Communications Solutions
Segment reporting information
Net sales	24.2	13.4	40.0	24.6
Inter-Segment \| Interconnect and Sensor Systems
Segment reporting information
Net sales	$ 15.5	$ 6.4	$ 25.3	$ 11.4

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