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, 2026 USD ($) segment entity	Mar. 31, 2025 USD ($)
Segment reporting information
Number of reportable business segments | segment	3
Number of segment managers | entity	3
Net sales	$ 7,620.1	$ 4,811.0
Operating income	1,831.8	1,024.8
Communications Solutions
Segment reporting information
Net sales	4,534.7	2,413.7
Harsh Environment Solutions
Segment reporting information
Net sales	1,693.1	1,268.2
Interconnect and Sensor Systems
Segment reporting information
Net sales	1,392.3	1,129.1
Operating Segment
Segment reporting information
Net sales	7,699.7	4,863.4
Less: Segment operating expenses	5,475.7	3,634.5
Operating income	2,144.4	1,176.5
Operating Segment | Communications Solutions
Segment reporting information
Net sales	4,561.0	2,429.5
Less: Segment operating expenses	3,145.3	1,752.9
Operating income	1,389.4	660.8
Operating Segment | Harsh Environment Solutions
Segment reporting information
Net sales	1,725.4	1,295.0
Less: Segment operating expenses	1,219.8	957.0
Operating income	473.3	311.2
Operating Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales	1,413.3	1,138.9
Less: Segment operating expenses	1,110.6	924.6
Operating income	281.7	204.5
Inter-Segment
Segment reporting information
Net sales	79.6	52.4
Inter-Segment | Communications Solutions
Segment reporting information
Net sales	26.3	15.8
Inter-Segment | Harsh Environment Solutions
Segment reporting information
Net sales	32.3	26.8
Inter-Segment | Interconnect and Sensor Systems
Segment reporting information
Net sales	$ 21.0	$ 9.8