Acquisitions (Details) $ in Millions				3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) agreement	Jul. 18, 2024 USD ($)	May 21, 2024 USD ($)	Sep. 30, 2024 USD ($) agreement	Sep. 30, 2023 USD ($)	Jun. 30, 2023 agreement	Sep. 30, 2024 USD ($) agreement segment	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) agreement
Acquisitions
Number of reportable business segments | segment							3
Number of acquisitions | agreement							2
Acquisition-related expenses				$ 45.4	$ 9.0		$ 115.4	$ 18.4
Purchase price, net of cash acquired							2,099.8	292.6
Bargain purchase gain on acquisition				0.0	0.0		0.0	5.4
Goodwill	$ 8,352.1			8,352.1			8,352.1		$ 7,092.4
Amortization expense				66.2	18.1		126.9	59.4
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales				18.2	0.0		18.2	0.0
Carlisle Interconnect Technologies Acquisition [Member]
Acquisitions
Purchase price, net of cash acquired			$ 1,995.3
Goodwill	1,122.1		1,122.1	1,122.1			1,122.1
Goodwill deductible for tax purposes	0.0		0.0	0.0			0.0
Definite-lived intangible assets			543.0				543.0
CommScope Mobile Networks-related Business [Member]
Acquisitions
Expected price of acquisition		$ 2,100.0
2023 Acquisitions [Member]
Acquisitions
Number of acquisitions | agreement									10
Acquisition-related expenses					9.0			18.4
Acquisition-related expenses, net of tax					$ 8.4			16.2
Purchase price, net of cash acquired									$ 970.4
Goodwill	673.5			673.5			673.5
Goodwill deductible for tax purposes	$ 155.0			$ 155.0			155.0
Definite-lived intangible assets							$ 153.2
Number of acquisitions for which acquisition accounting has been completed | agreement	6			6			6
2024 Acquisitions [Member]
Acquisitions
Total acquisition-related expenses				$ 63.6			$ 133.6
Total acquisition-related expenses, net of tax				49.8			109.7
Acquisition-related expenses				45.4			$ 115.4
Customer relationships | Carlisle Interconnect Technologies Acquisition [Member]
Acquisitions
Definite-lived intangible assets	$ 488.0		$ 488.0
Finite-lived acquired intangible assets weighted-average useful life			15 years
Customer relationships | 2023 Acquisitions [Member] | Minimum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life							6 years
Customer relationships | 2023 Acquisitions [Member] | Maximum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life							12 years
Proprietary technology | 2023 Acquisitions [Member] | Minimum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life							6 years
Proprietary technology | 2023 Acquisitions [Member] | Maximum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life							12 years
Backlog | Carlisle Interconnect Technologies Acquisition [Member]
Acquisitions
Definite-lived intangible assets	55.0		$ 55.0
Finite-lived acquired intangible assets weighted-average useful life			4 months 24 days
Amortization expense				38.4			$ 55.0
Backlog | 2023 Acquisitions [Member]
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life							3 months
Amortization expense								$ 5.4
Amortization of Inventory step-up costs recorded to Cost of Sales [Member] | Carlisle Interconnect Technologies Acquisition [Member]
Acquisitions
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales				18.2			$ 18.2
Bargain Purchase [Member] | 2023 Acquisitions [Member]
Acquisitions
Number of acquisitions | agreement						1
Harsh Environment Solutions
Acquisitions
Number of acquisitions | agreement							2
Goodwill	3,199.0			3,199.0			$ 3,199.0		$ 2,009.3
Harsh Environment Solutions | 2023 Acquisitions [Member]
Acquisitions
Number of acquisitions | agreement									5
Interconnect and Sensor Systems
Acquisitions
Goodwill	2,168.9			2,168.9			2,168.9		$ 2,105.6
Interconnect and Sensor Systems | 2023 Acquisitions [Member]
Acquisitions
Number of acquisitions | agreement									3
Communications Solutions
Acquisitions
Goodwill	$ 2,984.2			$ 2,984.2			$ 2,984.2		$ 2,977.5
Communications Solutions | 2023 Acquisitions [Member]
Acquisitions
Number of acquisitions | agreement									2