This element represents acquisition-related costs incurred, which are recorded below gross profit and above (component of) operating income, as a separate line item on the Income Statement. These are costs that include, but are not limited to, external transaction costs, professional fees, and the amortization of acquired backlog.

No definition available.

Acquisitions (Details) $ / shares in Units, $ in Millions		3 Months Ended			12 Months Ended
Acquisitions (Details) $ / shares in Units, $ in Millions	Jan. 09, 2026 USD ($)	Mar. 31, 2026 USD ($) agreement $ / shares	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($) $ / shares	Dec. 31, 2025 USD ($) agreement
Acquisitions
Purchase price, net of cash acquired		$ 10,591.8		$ 2,172.2
Acquisition-related expenses		116.9		44.0
Goodwill		17,542.9	$ 17,542.9		$ 10,575.4
Amortization of Inventory step-up costs recorded to Cost of Sales
Acquisitions
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales		132.0
Communications Solutions
Acquisitions
Goodwill		10,840.6	10,840.6		$ 3,858.6
Harsh Environment Solutions
Acquisitions
Number of acquisitions \| agreement					3
Goodwill		4,269.1	4,269.1		$ 4,270.2
Interconnect and Sensor Systems
Acquisitions
Number of acquisitions \| agreement					1
Goodwill		2,433.2	2,433.2		$ 2,446.6
2026 Acquisitions
Acquisitions
Acquisition-related expenses		248.9
Acquisition-related expenses, net of tax		$ 200.6
Acquisition-related expenses per diluted share \| $ / shares		$ 0.16
CommScope's Connectivity and Cable Solutions Business
Acquisitions
Business acquisition, effective date	Jan. 09, 2026
Aggregate purchase price	$ 10,592.9
Total acquisition-related expenses		$ 222.3
Total acquisition-related expenses, net of tax		181.0
Acquisition-related expenses		$ 90.3
Acquisition-related expenses per diluted share \| $ / shares		$ 0.14
Net sales			871.5
Net loss			9.0
Net loss excludes interest expense and external transaction costs			155.5
Net loss excludes interest expense and external transaction costs, net of tax			119.1
Goodwill	6,978.4
Definite-lived intangible assets	$ 3,306.0
Finite-lived acquired intangible assets weighted-average useful life	16 years
Goodwill deductible for tax purposes	$ 0.0
CommScope's Connectivity and Cable Solutions Business \| Transaction expenses
Acquisitions
Total acquisition-related expenses		$ 66.8
CommScope's Connectivity and Cable Solutions Business \| Inventory step-up costs
Acquisitions
Total acquisition-related expenses		132.0
CommScope's Connectivity and Cable Solutions Business \| Acquired backlog
Acquisitions
Total acquisition-related expenses		23.5
CommScope's Connectivity and Cable Solutions Business \| Pro forma
Acquisitions
Total acquisition-related expenses				243.2
Total acquisition-related expenses, net of tax				$ 201.9
Acquisition-related expenses per diluted share \| $ / shares				$ 0.16
CommScope's Connectivity and Cable Solutions Business \| Pro forma \| Transaction expenses
Acquisitions
Total acquisition-related expenses				$ 87.7
CommScope's Connectivity and Cable Solutions Business \| Pro forma \| Inventory step-up costs
Acquisitions
Total acquisition-related expenses				132.0
CommScope's Connectivity and Cable Solutions Business \| Pro forma \| Acquired backlog
Acquisitions
Total acquisition-related expenses				23.5
CommScope's Connectivity and Cable Solutions Business \| Amortization of Inventory step-up costs recorded to Cost of Sales
Acquisitions
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales		$ 132.0
CommScope's Connectivity and Cable Solutions Business \| Proprietary technology
Acquisitions
Definite-lived intangible assets	$ 1,456.0
Finite-lived acquired intangible assets weighted-average useful life	14 years
CommScope's Connectivity and Cable Solutions Business \| Customer relationships
Acquisitions
Definite-lived intangible assets	$ 1,211.0
Finite-lived acquired intangible assets weighted-average useful life	16 years
CommScope's Connectivity and Cable Solutions Business \| Trade names
Acquisitions
Definite-lived intangible assets	$ 592.0
Finite-lived acquired intangible assets weighted-average useful life	22 years
CommScope's Connectivity and Cable Solutions Business \| Backlog
Acquisitions
Definite-lived intangible assets	$ 47.0
Finite-lived acquired intangible assets weighted-average useful life	6 months
2025 Acquisitions
Acquisitions
Number of acquisitions \| agreement					5
Number of acquisitions completed \| agreement		2
Number of acquisitions in process \| agreement		3
Purchase price, net of cash acquired					$ 3,818.6
Acquisition-related expenses				104.9
Acquisition-related expenses, net of tax				$ 82.1
Acquisition-related expenses per diluted share \| $ / shares				$ 0.06
Goodwill		$ 2,162.5	2,162.5
Definite-lived intangible assets		1,203.0
Goodwill deductible for tax purposes		$ 672.8	$ 672.8
2025 Acquisitions \| Proprietary technology \| Minimum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life		10 years
2025 Acquisitions \| Proprietary technology \| Maximum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life		15 years
2025 Acquisitions \| Customer relationships \| Minimum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life		10 years
2025 Acquisitions \| Customer relationships \| Maximum
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life		18 years
2025 Acquisitions \| Backlog
Acquisitions
Finite-lived acquired intangible assets weighted-average useful life		4 months 24 days
Andrew Business Acquisition \| Amortization of Inventory step-up costs recorded to Cost of Sales
Acquisitions
Amortization of acquisition-related inventory step-up costs recorded in Cost of sales				$ 60.9
Andrew Business Acquisition \| Communications Solutions
Acquisitions
Number of acquisitions \| agreement					1