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	9 Months Ended
Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) segment entity	Sep. 30, 2025 USD ($)
Segment reporting information
Number of reportable business segments \| segment			3
Number of segment managers \| entity			3
Net sales	$ 10,229.7	$ 6,194.4	$ 26,607.9	$ 16,655.7
Segment operating income	3,020.8	1,702.3	7,437.2	4,145.9
Communications Solutions
Segment reporting information
Net sales	6,583.0	3,309.5	16,501.3	8,633.0
Harsh Environment Solutions
Segment reporting information
Net sales	2,042.1	1,515.8	5,592.0	4,229.3
Interconnect and Sensor Systems
Segment reporting information
Net sales	1,604.6	1,369.1	4,514.6	3,793.4
Operating Segment
Segment reporting information
Net sales	10,350.9	6,275.1	26,922.7	16,858.9
Less: Segment operating expenses	7,113.6	4,427.8	18,661.0	12,205.9
Segment operating income	3,116.1	1,766.6	7,946.9	4,449.8
Operating Segment \| Communications Solutions
Segment reporting information
Net sales	6,629.9	3,343.0	16,618.1	8,706.5
Less: Segment operating expenses	4,402.6	2,228.2	11,123.3	6,000.2
Segment operating income	2,180.4	1,081.3	5,378.0	2,632.8
Operating Segment \| Harsh Environment Solutions
Segment reporting information
Net sales	2,087.8	1,547.5	5,711.4	4,318.2
Less: Segment operating expenses	1,427.1	1,104.9	3,944.4	3,143.5
Segment operating income	615.0	410.9	1,647.6	1,085.8
Operating Segment \| Interconnect and Sensor Systems
Segment reporting information
Net sales	1,633.2	1,384.6	4,593.2	3,834.2
Less: Segment operating expenses	1,283.9	1,094.7	3,593.3	3,062.2
Segment operating income	320.7	274.4	921.3	731.2
Inter-Segment
Segment reporting information
Net sales	121.2	80.7	314.8	203.2
Inter-Segment \| Communications Solutions
Segment reporting information
Net sales	46.9	33.5	116.8	73.5
Inter-Segment \| Harsh Environment Solutions
Segment reporting information
Net sales	45.7	31.7	119.4	88.9
Inter-Segment \| Interconnect and Sensor Systems
Segment reporting information
Net sales	$ 28.6	$ 15.5	$ 78.6	$ 40.8

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