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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Background and Basis of Presentation - Additional Information (Detail) shares in Millions, $ in Millions			1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 18, 2024 USD ($)	Jun. 07, 2024 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2025 USD ($) Customer shares	Jun. 30, 2024 USD ($) Customer shares	Jun. 30, 2025 USD ($) Customer shares	Jun. 30, 2024 USD ($) Customer shares	Dec. 31, 2024 USD ($)	Jan. 01, 2024
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Related party transactions				$ 0.0		$ 0.0
Advance payment on long term supply						$ 80.0		$ 60.0
Increase in purchase of raw material			$ 137.0
Product warranty term						These product warranties extend over various periods, depending on the product subject to the warranty and the terms of the individual agreements.
Intangible asset impairment charges, excluding goodwill				0.0	$ 0.0	$ 0.0	$ 0.0
Goodwill impairment charges				0.0	0.0	0.0	0.0
Income tax (expense) benefit				(41.4)	12.4	292.7	(14.8)
Income Tax Expense Benefit Recognised				361.1		361.1
Tax Benefit				29.6	67.8	50.0	67.8
Pre-tax net income (loss) for the period				$ 70.8	$ (68.6)	26.4	(284.4)
Asset impairments						0.0	$ 17.2
Excess tax costs related to equity compensation awards						$ 7.3
Statutory income tax rate				21.00%		21.00%
Dilutive effect of equity-based awards \| shares				9.2	0.0	10.1	0.0
Cash proceeds from sale of segment						$ 2,041.8	$ 0.0
ANS Reporting Unit [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of exceeded carrying amount									8.00%
OWN and Distributed Antenna Systems business unit of NICS segment [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cash proceeds from sale of segment	$ 2,000.0
Carlyle [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of convertible preferred stock owned				100.00%		100.00%
Casa Systems Inc [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Total cash consideration paid		$ 45.1
Convertible Preferred Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Dilutive effect of equity-based awards \| shares				45.2	42.8		42.5
Stock Compensation Plan [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Amount of outstanding equity based awards not included in computation of diluted earnings per share \| shares				9.0	19.2	8.3	18.6
Dilutive effect of equity-based awards \| shares					2.0		1.7
Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Advance payment on long term supply			$ 120.0
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Comcast Corporation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				14.00%		12.00%
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Other Than Comcast [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Direct customer accounted for 10% or more of the Company's accounts receivable and total net sales \| Customer				0	0	0	0
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Other Charter Communications Inc [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Direct customer accounted for 10% or more of the Company's accounts receivable and total net sales \| Customer				0	0	0	0
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Charter Communication Inc [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage							10.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Other Than Comcast [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Direct customer accounted for 10% or more of the Company's accounts receivable and total net sales \| Customer						0
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Other Than Anixter [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Direct customer accounted for 10% or more of the Company's accounts receivable and total net sales \| Customer						0
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Anixter International [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage						11.00%
Customer Concentration Risk [Member] \| Maximum [Member] \| Sales Revenue, Net [Member] \| Other Than Comcast [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk [Member] \| Maximum [Member] \| Sales Revenue, Net [Member] \| Other Charter Communications Inc [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				10.00%	10.00%	10.00%	10.00%
Customer Concentration Risk [Member] \| Maximum [Member] \| Accounts Receivable [Member] \| Other Than Comcast [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage						10.00%
Customer Concentration Risk [Member] \| Maximum [Member] \| Accounts Receivable [Member] \| Other Than Anixter [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage						10.00%
Customer Concentration Risk [Member] \| Minimum [Member] \| Sales Revenue, Net [Member] \| Comcast Corporation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage						17.00%