Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

Background and Basis of Presentation - Additional Information (Detail) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
	Apr. 29, 2026 USD ($)	Jun. 30, 2026 USD ($) Customer shares	Jun. 30, 2025 USD ($) Customer shares	Jun. 30, 2026 USD ($) Customer shares	Jun. 30, 2025 USD ($) Customer shares	Jan. 01, 2024
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Related party transactions				$ 0.0
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)		(28.7)	2.5	(22.3)	(359.2)
Tax Benefit		7.1		7.1
Income Tax Expense Benefit Recognised		21.0		21.2	361.1
Pre-tax net income (loss) for the period		$ (2.6)	$ 8.4	$ 20.4	(20.8)
Statutory income tax rate		21.00%		21.00%
Restricted cash		$ 56.5		$ 56.5
Cash proceeds from sale of segment				$ 10,541.7	$ 2,041.8
ANS Reporting Unit [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Percentage of exceeded carrying amount						9.00%
Belden Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Cash proceeds from sale of segment	$ 1,846.0
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		2.2	18.2	2.4	8.3
Stock Compensation Plan [Member] \| Convertible Preferred Stock [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				2.3	45.2
Prepaid Expenses and Other Current Assets [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Restricted cash		$ 11.4		$ 11.4
Other Noncurrent Assets [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Restricted cash		$ 45.1		$ 45.1
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Comcast Corporation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage		59.00%	48.00%	60.00%	42.00%
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Charter Communications, Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage		12.00%	15.00%	10.00%	14.00%
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Other than Comcast and Charter [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] \| Accounts Receivable [Member] \| Comcast Corporation [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				48.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Charter Communications, Inc. [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				15.00%
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Other than Comcast and Charter [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage				10.00%
Direct customer accounted for 10% or more of the Company's accounts receivable and total net sales \| Customer				0
Customer Concentration Risk [Member] \| Maximum [Member] \| Sales Revenue, Net [Member] \| Other than Comcast and Charter [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Concentration risk percentage		10.00%	10.00%	10.00%	10.00%