Goodwill and Other Intangible Assets, Goodwill (Details) $ in Millions		9 Months Ended	12 Months Ended
	Jul. 01, 2025 USD ($)	Sep. 30, 2025 USD ($) segment	Dec. 31, 2024 USD ($)
Goodwill.
Goodwill, Beginning Balance		$ 8,236.2
Acquisition-related		1,460.5
Foreign currency translation		171.9
Goodwill, Ending Balance		$ 9,868.6	$ 8,236.2
Number of reportable business segments | segment		3
Goodwill impairment	$ 0.0	$ 0.0	0.0
Harsh Environment Solutions
Goodwill.
Goodwill, Beginning Balance		3,180.0
Acquisition-related		351.0
Foreign currency translation		37.3
Goodwill, Ending Balance		3,568.3	3,180.0
Communications Solutions
Goodwill.
Goodwill, Beginning Balance		2,951.5
Acquisition-related		873.4
Foreign currency translation		31.5
Goodwill, Ending Balance		3,856.4	2,951.5
Interconnect and Sensor Systems
Goodwill.
Goodwill, Beginning Balance		2,104.7
Acquisition-related		236.1
Foreign currency translation		103.1
Goodwill, Ending Balance		$ 2,443.9	$ 2,104.7