CommScope Holding (COMM) 10-K17 Feb 212020 FY Annual reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2020	Feb. 05, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	CommScope Holding Company, Inc.
Entity Central Index Key	0001517228
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 1,603.3
Entity Common Stock, Shares Outstanding		200,832,665
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	COMM
Security Exchange Name	NASDAQ
Entity File Number	001-36146
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-4332098
Entity Address, Address Line One	1100 CommScope Place, SE
Entity Address, City or Town	Hickory
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28602
City Area Code	828
Local Phone Number	324-2200
ICFR Auditor Attestation Flag	true
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference [Text Block]	Portions of the registrant’s Proxy Statement for the 2021 Annual Meeting of Stockholders are incorporated by reference in Part III hereof.

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 8,435.9	$ 8,345.1	$ 4,568.5
Cost of sales	5,688.1	5,941	2,935.2
Gross profit	2,747.8	2,404.1	1,633.3
Operating expenses:
Selling, general and administrative	1,170.7	1,277.1	674
Research and development	703.3	578.5	185.7
Amortization of purchased intangible assets	630.5	593.2	264.6
Restructuring costs, net	88.4	87.7	44
Asset impairments	206.7	376.1	15
Total operating expenses	2,799.6	2,912.6	1,183.3
Operating income (loss)	(51.8)	(508.5)	450
Other expense, net	(29.3)	(6.4)	(44.3)
Interest expense	(577.8)	(577.2)	(242)
Interest income	4.4	18.1	7
Income (loss) before income taxes	(654.5)	(1,074)	170.7
Income tax (expense) benefit	81.1	144.5	(30.5)
Net income (loss)	(573.4)	(929.5)	140.2
Series A convertible preferred stock dividend	(56.1)	(40.7)
Deemed dividend on Series A convertible preferred stock		(3)
Net income (loss) attributable to common stockholders	$ (629.5)	$ (973.2)	$ 140.2
Earnings (loss) per share:
Basic	$ (3.20)	$ (5.02)	$ 0.73
Diluted	$ (3.20)	$ (5.02)	$ 0.72
Weighted average shares outstanding:
Basic	196.8	193.7	192
Diluted	196.8	193.7	195.3

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Comprehensive income (loss):
Net income (loss)	$ (573.4)	$ (929.5)	$ 140.2
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss)	82.2	(22.2)	(87.7)
Defined benefit plans:
Change in unrecognized actuarial gain (loss)	(10.8)	(7.7)	23.3
Change in unrecognized net prior service credit	(0.2)	(0.4)	(11.7)
Gain (loss) on hedging instruments	(30.1)	(7.5)	3.5
Total other comprehensive income (loss), net of tax	41.1	(37.8)	(72.6)
Total comprehensive income (loss)	$ (532.3)	$ (967.3)	$ 67.6

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 521.9	$ 598.2
Accounts receivable, less allowance for doubtful accounts of $40.3 and $35.4, respectively	1,487.4	1,698.8
Inventories, net	1,088.9	975.9
Prepaid expenses and other current assets	256.3	238.9
Total current assets	3,354.5	3,511.8
Property, plant and equipment, net of accumulated depreciation of $705.7 and $553.8, respectively	684.5	723.8
Goodwill	5,286.5	5,471.7
Other intangible assets, net	3,650.4	4,263.6
Other noncurrent assets	600.9	460.7
Total assets	13,576.8	14,431.6
Liabilities and Stockholders' Equity
Accounts payable	1,010.8	1,148
Accrued and other liabilities	910.6	862
Current portion of long-term debt	32	32
Total current liabilities	1,953.4	2,042
Long-term debt	9,488.6	9,800.4
Deferred income taxes	206.2	215.1
Other noncurrent liabilities	531.8	537.8
Total liabilities	12,180	12,595.3
Commitments and contingencies
Series A convertible preferred stock, $0.01 par value	1,041.8	1,000
Stockholders' equity:
Preferred stock, $0.01 par value: Authorized shares: 200,000,000; Issued and outstanding shares: 1,041,819 Series A convertible preferred stock
Common stock, $0.01 par value: Authorized shares: 1,300,000,000; Issued and outstanding shares: 200,095,232 and 194,563,530, respectively	2.1	2
Additional paid-in capital	2,512.9	2,445.1
Retained earnings (accumulated deficit)	(1,752.7)	(1,179.3)
Accumulated other comprehensive loss	(155.9)	(197)
Treasury stock, at cost: 9,223,081 shares and 7,411,382 shares, respectively	(251.4)	(234.5)
Total stockholders' equity	355	836.3
Total liabilities and stockholders' equity	$ 13,576.8	$ 14,431.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 40.3	$ 35.4
Property, plant and equipment, accumulated depreciation	$ 705.7	$ 553.8
Series A convertible preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	200,000,000	200,000,000
Series A convertible preferred stock, shares issued	1,041,819	1,041,819
Series A convertible preferred stock, shares outstanding	1,041,819	1,041,819
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,300,000,000	1,300,000,000
Common stock, shares issued	200,095,232	194,563,530
Common stock, shares outstanding	200,095,232	194,563,530
Treasury stock, shares	9,223,081	7,411,382

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Activities:
Net income (loss)	$ (573.4)	$ (929.5)	$ 140.2
Adjustments to reconcile net income (loss) to net cash generated by operating activities:
Depreciation and amortization	823.3	770.9	357.5
Equity-based compensation	115	90.8	44.9
Deferred income taxes	(154.7)	(260.8)	(49.2)
Asset impairments	206.7	376.1	15
Changes in assets and liabilities:
Accounts receivable	228.4	258.8	65.1
Inventories	(100.5)	489.1	(48.5)
Prepaid expenses and other current assets	(17.2)	19.5	1
Accounts payable and other accrued liabilities	(175.2)	(274)	(0.8)
Other noncurrent liabilities	(4)	7.2	(54.6)
Other noncurrent assets	28.8	46	(8)
Other	59	2.3	31.5
Net cash generated by operating activities	436.2	596.4	494.1
Investing Activities:
Additions to property, plant and equipment	(121.2)	(104.1)	(82.3)
Proceeds from sale of property, plant and equipment	5	1.6	12.9
Proceeds from sale of long-term investments		9.3
Cash paid for ARRIS acquisition, net of cash acquired		(5,053.4)
Cash paid for Cable Exchange acquisition	(3.5)	(11)
Other	(0.5)	2.7	5.1
Net cash used in investing activities	(120.2)	(5,154.9)	(64.3)
Financing Activities:
Long-term debt repaid	(1,282)	(3,061.3)	(550)
Long-term debt proceeds	950	6,933	150
Debt issuance costs	(11.7)	(120.8)
Debt extinguishment costs	(17.9)
Series A convertible preferred stock proceeds		1,000
Dividends paid on Series A convertible preferred stock	(14.3)	(40.7)
Deemed dividend paid on Series A convertible preferred stock		(3)
Proceeds from the issuance of common shares under equity-based compensation plans	9	4.6	6.1
Tax withholding payments for vested equity-based compensation awards	(16.9)	(13.2)	(15.7)
Net cash generated by (used in) financing activities	(383.8)	4,698.6	(409.6)
Effect of exchange rate changes on cash and cash equivalents	(8.5)	(0.1)	(16)
Change in cash and cash equivalents	(76.3)	140	4.2
Cash and cash equivalents at beginning of period	598.2	458.2	454
Cash and cash equivalents at end of period	$ 521.9	$ 598.2	$ 458.2

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Retained Earnings (Accumulated Deficit) [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, at Cost [Member]
Beginning balance, Shares at Dec. 31, 2017		190,906,110
Issuance of shares under equity-based compensation plans, shares		1,878,083
Shares surrendered under equity-based compensation plans		(407,938)
Ending balance, Shares at Dec. 31, 2018		192,376,255
Beginning balance at Dec. 31, 2017		$ 2	$ 2,334.1	$ (396)	$ 6	$ (86.6)	$ (205.6)
Issuance of shares under equity-based compensation plans			6.1
Equity-based compensation			44.9
Net income (loss)	$ 140.2			140.2
Other comprehensive income (loss), net of tax	(72.6)					(72.6)
Net shares surrendered under equity-based compensation plans							(15.7)
Ending balance at Dec. 31, 2018	$ 1,756.8	$ 2	2,385.1	(249.8)		(159.2)	(221.3)
Issuance of shares under equity-based compensation plans, shares		2,854,575
Shares surrendered under equity-based compensation plans		(667,300)
Ending balance, Shares at Dec. 31, 2019	194,563,530	194,563,530
Issuance of shares under equity-based compensation plans			4.6
Equity-based compensation			90.8
Equity-based compensation assumed			8.3
Dividend on Series A convertible preferred stock			(40.7)
Deemed dividend on Series A convertible preferred stock			(3)
Net income (loss)	$ (929.5)			(929.5)
Other comprehensive income (loss), net of tax	(37.8)					(37.8)
Net shares surrendered under equity-based compensation plans							(13.2)
Ending balance at Dec. 31, 2019	$ 836.3	$ 2	2,445.1	(1,179.3)		(197)	(234.5)
Issuance of shares under equity-based compensation plans, shares		7,343,401
Shares surrendered under equity-based compensation plans		(1,811,699)
Ending balance, Shares at Dec. 31, 2020	200,095,232	200,095,232
Issuance of shares under equity-based compensation plans		$ 0.1	8.9
Equity-based compensation			115
Dividend on Series A convertible preferred stock			(56.1)
Net income (loss)	$ (573.4)			(573.4)
Other comprehensive income (loss), net of tax	41.1					41.1
Net shares surrendered under equity-based compensation plans							(16.9)
Ending balance at Dec. 31, 2020	$ 355	$ 2.1	$ 2,512.9	$ (1,752.7)		$ (155.9)	$ (251.4)

Background and Description of t

Background and Description of the Business	12 Months Ended
Background and Description of the Business	Dec. 31, 2020
Accounting Policies [Abstract]
Background and Description of the Business	1. BACKGROUND AND DESCRIPTION OF THE BUSINESS CommScope Holding Company, Inc., along with its direct and indirect subsidiaries (CommScope or the Company), is a global provider of infrastructure solutions for communication and entertainment networks. The Company’s solutions for wired and wireless networks enable service providers including cable, telephone and digital broadcast satellite operators and media programmers to deliver media, voice, Internet Protocol (IP) data services and Wi-Fi to their subscribers and allow enterprises to experience constant wireless and wired connectivity across complex and varied networking environments. The Company’s solutions are complemented by a broad array of services including technical support, systems design and integration. CommScope is a leader in digital video and IP television distribution systems, broadband access infrastructure platforms and equipment that delivers data and voice networks to homes. CommScope’s global leadership position is built upon innovative technology, broad solution offerings, high-quality and cost-effective customer solutions, and global manufacturing and distribution scale. On April 4, 2019, the Company completed the acquisition of ARRIS International plc (ARRIS) (the Acquisition) in an all-cash transaction with a total purchase price of approximately $7.7 billion, including debt assumed. See Note 3 for additional discussion of the Acquisition. As of January 1, 2020, the Company reorganized its internal management and reporting structure as part of the integration of the Acquisition. The reorganization changed the information regularly reviewed by the Company’s chief operating decision maker for purposes of allocating resources and assessing performance. As a result, the Company now reports financial performance for the 2020 year based on four operating segments: Broadband Networks (Broadband), Home Networks (Home), Outdoor Wireless Networks (OWN) and Venue and Campus Networks (VCN). These four segments represent non-aggregated reportable operating segments. Prior to this change, the Company operated and reported five operating segments: Connectivity Solutions, Mobility Solutions, Customer Premises Equipment, Network and Cloud and Ruckus Networks. All prior period amounts in these consolidated financial statements have been recast to reflect these operating segment changes.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Consolidation The accompanying consolidated financial statements include CommScope Holding Company, Inc., along with its direct and indirect subsidiaries. All intercompany accounts and transactions are eliminated in consolidation. Certain prior year amounts have been reclassified to conform to the current year presentation. Use of Estimates in the Preparation of the Financial Statements The preparation of the accompanying consolidated financial statements in conformity with accounting principles generally accepted in the United States (U.S.) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These estimates and their underlying assumptions form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other objective sources. The Company bases its estimates on historical experience and on assumptions that are believed to be reasonable under the circumstances and revises its estimates, as appropriate, when events or changes in circumstances indicate that revisions may be necessary. Significant accounting estimates reflected in the Company’s financial statements include the allowance for doubtful accounts; reserves for sales returns, discounts, allowances, rebates and distributor price protection programs; inventory excess and obsolescence reserves; product warranty reserves and other contingent liabilities; tax valuation allowances; liabilities for unrecognized tax benefits; purchase price allocations; impairment reviews for investments, property, plant and equipment, goodwill and other intangible assets; and pension and other postretirement benefit costs and liabilities. Although these estimates are based on management’s knowledge of and experience with past and current events and on management’s assumptions about future events, it is at least reasonably possible that they may ultimately differ materially from actual results. Cash and Cash Equivalents Cash and cash equivalents represent deposits in banks and cash invested temporarily in various instruments with a maturity of three months or less at the time of purchase. Accounts Receivable and Allowance for Doubtful Accounts Trade accounts receivable and contract assets for unbilled receivables are stated at the amount owed by the customer, net of allowances for estimated doubtful accounts, discounts, returns and rebates. The Company measures the allowance for doubtful accounts using an expected credit loss model, which uses a lifetime expected loss allowance for all trade accounts receivable and contract assets. To measure the expected credit losses, trade accounts receivable and contract assets are grouped based on shared credit risk characteristics and the days past due. Contract assets relate to unbilled work in progress and have substantially the same risk characteristics as trade accounts receivable for the same types of contracts. Therefore, the Company has concluded that the expected loss rates for trade accounts receivables are a reasonable approximation of the loss rates for the contract assets. In calculating an allowance for doubtful accounts, the Company uses its historical experience, external indicators and forward-looking information to calculate expected credit losses using an aging method. The Company assesses impairment of trade accounts receivable on a collective basis as they possess shared credit risk characteristics which have been grouped based on the days past due. The expected loss rates are based on the payment profiles of sales over the preceding thirty-six months and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle their trade accounts receivable. Inventories Inventories are stated at the lower of cost or net realizable value. Inventory cost is determined on a first-in, first-out (FIFO) basis. Costs such as idle facility expense, excessive scrap and re-handling costs are expensed as incurred. The Company maintains reserves to reduce the value of inventory to the lower of cost or net realizable value, including reserves for excess and obsolete inventory. Long-Lived Assets Property, Plant and Equipment Property, plant and equipment are stated at cost. Upon application of acquisition accounting, property, plant and equipment are measured at estimated fair value as of the acquisition date to establish a new historical cost basis. Provisions for depreciation are based on estimated useful lives of the assets using the straight-line method. Useful lives generally range from 10 to 35 years 3 to 10 years Goodwill and Other Intangible Assets Goodwill is assigned to reporting units based on the difference between the purchase price as allocated to the reporting units and the estimated fair value of the identified net assets acquired as allocated to the reporting units. Purchased intangible assets with finite lives are carried at their estimated fair values at the time of acquisition less accumulated amortization and any impairment charges. Amortization is recognized on a straight-line basis over the estimated useful lives of the respective assets. Asset Impairments Goodwill is tested for impairment annually or at other times if events have occurred or circumstances exist that indicate the carrying value of the reporting unit may exceed its fair value. Property, plant and equipment and intangible assets with finite lives are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable, based on the undiscounted cash flows expected to be derived from the use and ultimate disposition of the assets. Assets identified as impaired are carried at estimated fair value. Equity investments without readily determinable fair values are evaluated each reporting period for impairment based on a qualitative assessment and are then measured at fair value if an impairment is determined to exist. See Notes 4 and 10 for discussion of asset impairment charges. Income Taxes Deferred income taxes reflect the future tax consequences of differences between the financial reporting and tax basis of assets and liabilities. The Company records a valuation allowance, when appropriate, to reduce deferred tax assets to an amount that is more likely than not to be realized. Tax benefits that result from uncertain tax positions may be recognized only if they are considered more likely than not to be sustainable, based on their technical merits. The amount of benefit to be recognized is the largest amount of tax benefit that is at least 50% likely to be realized. In addition, the Company does not provide for U.S. taxes related to the foreign currency remeasurement gains and losses on its long-term intercompany loans with foreign subsidiaries. These loans are not expected to be repaid in the foreseeable future, and the foreign currency gains and losses are therefore recorded to accumulated other comprehensive loss. The Company records the income tax effects related to the activity of its defined benefit plans and hedging instruments in accumulated other comprehensive loss at the currently enacted tax rate and reclassifies it to net income in the same period that the related pre-tax accumulated comprehensive income reclassifications are recognized. Revenue Recognition The Company recognizes revenue based on the satisfaction of distinct obligations to transfer goods and services to customers. The Company’s revenue is generated primarily from product or equipment sales. The Company also generates revenue from custom design and installation services as well as bundled sales arrangements that include product, software and services. Revenue is recognized when performance obligations in a contract are satisfied through the transfer of control of the good or service at the amount of consideration expected to be received. The following are required before revenue is recognized: • Identify the contract with the customer. A variety of arrangements are considered contracts; however, contracts typically take the form of a master purchase agreement or customer purchase orders. • Identify the performance obligations in the contract. Performance obligations are identified as promised goods or services that are distinct within an arrangement. • Determine the transaction price. The transaction price is the amount of consideration the Company expects to receive in exchange for transferring the promised goods or services. The consideration may include fixed or variable amounts or both. • Allocate the transaction price to the performance obligations. The transaction price is allocated to the performance obligations on a relative standalone selling price basis. • Recognize revenue as the performance obligations are satisfied. Revenue is recognized when transfer of control of the promised goods or services has occurred. This is either at a point in time or over time. Product sales represent over 90% of the Company’s revenue. For these sales, revenue is recognized when control of the product has transferred to the customer, which is generally at the point in time when products have been shipped, right to payment has been obtained and risk of loss has been transferred. Certain of the Company’s product performance obligations include proprietary operating system software, which typically is not considered separately identifiable. Therefore, sales of these products and the related software are considered one performance obligation. License contracts include revenue recognized for the licensing of intellectual property, including software, sold separately without products. Functional intellectual property licenses do not meet the criteria for revenue to be recognized over time and revenue is most commonly recognized upon delivery of the license/software to the customer. Certain customer transactions may be project based and include multiple performance obligations based on the bundling of equipment, software and services. When a multiple performance obligation arrangement exists, the transaction price is allocated to the performance obligations based on their relative standalone selling price, and revenue is recognized upon transfer of control of each deliverable. To determine the standalone selling price, the Company first looks to establish the standalone selling price through an observable price when the good or service is sold separately in similar circumstances. If the standalone selling price cannot be established through an observable price, the Company will make an estimate based on market conditions, customer specific factors and customer class. The Company may use a combination of approaches to estimate the standalone selling price. For performance obligations recognized over time, judgment is required to evaluate assumptions, including the total estimated costs to determine progress towards completion of the performance obligation and to calculate the corresponding amount of revenue to recognize. If estimated total costs on any contract are greater than the net contract revenues, the entire estimated costs are recorded in the period in which the revisions to estimates are identified and the amounts can be reasonably estimated. Other customer contract types include a variety of post-contract support services offerings, including: • Maintenance and support services provided under annual service-level agreements with the Company’s customers. These services represent stand-ready obligations that are recognized over time (on a straight-line basis over the contract period) because the customer simultaneously receives and consumes the benefits of the services as the services are performed. • Professional services and other similar services consist primarily of “Day 2” services to help customers maximize their utilization of deployed systems. The services are recognized over time because the customer simultaneously receives and consumes the benefits of the service as the services are performed. • Installation services relate to the routine installation of equipment ordered by the customer at the customer’s site and are distinct performance obligations from delivery of the related hardware. The associated revenues are recognized over time as the services are provided. Revenue is measured based on the consideration the Company expects to be entitled based on customer contracts. For sales to distributors, system integrators and value-added resellers, revenue is adjusted for variable consideration amounts, including but not limited to estimated discounts, returns, rebates and distributor price protection programs. These estimates are determined based upon historical experience, contract terms, inventory levels in the distributor channel and other related factors. Adjustments to variable consideration estimates are recorded when circumstances indicate revisions may be necessary. A contract liability for deferred revenue is recorded when consideration is received or is unconditionally due from a customer prior to transferring control of goods or services to the customer under the terms of a contract. Deferred revenue balances typically result from advance payments received from customers for product contracts or from billings in excess of revenue recognized on project or services arrangements. Unbilled receivables are recorded when revenues are recognized in advance of invoice issuance. A contract asset is any portion of unbilled receivables for which the right to consideration is conditional on a factor other than the passage of time, which is common for certain project contract performance obligations. These assets are presented on a combined basis with accounts receivable and are converted to accounts receivable once the Company’s right to the consideration becomes unconditional, which varies by contract but is generally based on achieving certain acceptance milestones. The Company recognizes the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset would be one year or less. The Company includes shipping and handling costs billed to customers in net sales and includes the costs incurred to transport product to customers as well as certain internal handling costs, which relate to activities to prepare goods for shipment, as cost of sales. Shipping and handling costs incurred after control is transferred to the customer are accounted for as fulfillment costs and are not accounted for as separate revenue obligations. Leases The Company determines if a contract is a lease or contains a lease at inception. Right of use assets related to operating type leases are reported in other noncurrent assets and the present value of remaining lease obligations is reported in accrued and other liabilities and other noncurrent liabilities on the Consolidated Balance Sheets. For the periods presented, CommScope does not have any financing type leases. Operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The majority of the Company’s leases do not provide an implicit rate; therefore, the Company uses the incremental borrowing rates applicable to the economic environment and the duration of the lease, based on the information available at commencement date, in determining the present value of future payments. The right of use asset for operating leases is measured using the lease liability adjusted for the impact of lease payments made prior to commencement, lease incentives received, initial direct costs incurred and any asset impairments. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company remeasures and reallocates the consideration in a lease when there is a modification of the lease that is not accounted for as a separate contract. The lease liability is remeasured when there is a change in the lease term or a change in the assessment of whether the Company will exercise a lease option. The Company assesses right of use assets for impairment in accordance with its long-lived asset impairment policy. The Company accounts for lease agreements with contractually required lease and non-lease components on a combined basis. Lease payments made for cancellable leases, variable amounts that are not based on an observable index and lease agreements with an original duration of less than twelve months are recorded directly to lease expense. Tax Collected from Customers Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, which are collected by the Company from customers, are excluded from net sales. Product Warranties The Company recognizes a liability for the estimated claims that may be paid under its customer assurance-type warranty agreements to remedy potential deficiencies of quality or performance of the Company’s products. These product warranties extend over various periods, depending on the product subject to the warranty and the terms of the individual agreements. The Company records a provision for estimated future warranty claims as cost of sales based upon the historical relationship of warranty claims to sales and specifically identified warranty issues. The Company bases its estimates on assumptions that are believed to be reasonable under the circumstances and revises its estimates, as appropriate, when events or changes in circumstances indicate that revisions may be necessary. Such revisions may be material. Advertising Costs Advertising costs are expensed in the period in which they are incurred. Advertising expense was $45.9 million, $39.5 million and $17.3 million for the years ended December 31, 2020, 2019 and 2018, respectively. Research and Development Research and development (R&D) costs are expensed in the period in which they are incurred. R&D costs include materials and equipment that have no alternative future use, depreciation on equipment and facilities currently used for R&D purposes, personnel costs, contract services and reasonable allocations of indirect costs, if clearly related to an R&D activity. Expenditures in the pre-production phase of an R&D project are recorded as R&D expense. However, costs incurred in the pre-production phase that are associated with output actually used in production are recorded in cost of sales. A project is considered finished with pre-production efforts when management determines that it has achieved acceptable levels of scrap and yield, which vary by project. Expenditures related to ongoing production are recorded in cost of sales. Derivative Instruments and Hedging Activities CommScope is exposed to risks resulting from adverse fluctuations in commodity prices, interest rates and foreign currency exchange rates. CommScope’s risk management strategy includes the use of derivative financial instruments whenever management determines their use to be reasonable and practical. This strategy does not permit the use of derivative financial instruments for trading or speculation. The Company uses forward contracts to hedge a portion of its balance sheet foreign exchange re-measurement risk and to hedge certain planned foreign currency expenditures. Unrealized gains and losses resulting from these contracts are recognized in other expense, net and partially offset corresponding foreign exchange gains and losses on the balances and expenditures being hedged. These instruments are not designated as hedges for hedge accounting purposes and are marked to market each period through earnings. The Company has a hedging strategy to designate certain foreign currency contracts as net investment hedges to mitigate a portion of the foreign currency risk on the euro net investment in a foreign subsidiary. Hedge effectiveness is assessed each quarter based on the net investment in the foreign subsidiary designated as the hedged item and the changes in the fair value of designated foreign currency contracts based on spot rates. For hedges that meet the effectiveness requirements, changes in fair value are recorded as a component of other comprehensive income (loss), net of tax. Amounts excluded from hedge effectiveness at inception under the spot method for designated forward contracts are recognized on a straight-line basis over the life of each contract and for designated cross-currency swap contracts are recognized as interest accrues. The Company also has a hedging strategy to mitigate a portion of the exposure to changes in cash flows resulting from variable interest rates on the senior secured term loan due 2026 which are based on the one-month LIBOR benchmark rate (see Note 8). Hedge effectiveness is assessed each quarter, and for hedges that meet the effectiveness requirements, changes in fair value are recorded as a component of other comprehensive income (loss), net of tax, and are reclassified to interest expense as interest payments are made on the Company’s variable rate debt. The Company has elected and documented the use of the normal purchases and sales exception for normal purchase and sales contracts that meet the definition of a derivative financial instrument. See Note 9 for further disclosure related to the derivative instruments and hedging activities. Foreign Currency Translation For the years ended December 31, 2020, 2019 and 2018, approximately 39%, 41% and 44%, respectively, of the Company’s net sales were to customers located outside the U.S. A portion of these sales were denominated in currencies other than the U.S. dollar, particularly sales from the Company’s foreign subsidiaries. The financial position and results of operations of certain of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Revenues and expenses of these subsidiaries have been translated into U.S. dollars at average exchange rates prevailing during the period. Assets and liabilities of these subsidiaries have been translated at the exchange rates as of the balance sheet date. Translation gains and losses are recorded in accumulated other comprehensive loss. Upon sale or liquidation of an investment in a foreign subsidiary, the amount of net translation gains or losses that have been accumulated in other comprehensive loss attributable to that investment are reported as a gain or loss in earnings in the period in which the sale or liquidation occurs. Aggregate foreign currency gains and losses, such as those resulting from the settlement of receivables or payables, foreign currency contracts and short-term intercompany advances in a currency other than the subsidiary’s functional currency, are recorded currently in earnings (included in other expense, net) and resulted in losses of $19.2 million, $11.9 million and $15.9 million during the years ended December 31, 2020, 2019 and 2018, respectively. Foreign currency remeasurement gains and losses related to certain long-term intercompany loans that are not expected to be settled in the foreseeable future and the effective portion of foreign currency contracts designated as net investment hedges are recorded in accumulated other comprehensive loss. See Note 9 for disclosure of foreign currency gains and losses specifically related to foreign currency contracts. Equity-Based Compensation The estimated fair value of stock awards is recognized as expense over the requisite service periods. Forfeitures of stock awards are recognized as they occur. The Company records deferred tax assets related to compensation expense for awards that are expected to result in future tax deductions for the Company, based on the amount of compensation cost recognized and the Company’s statutory tax rate in the jurisdiction in which it expects to receive a deduction. Differences between the deferred tax assets recognized for financial reporting purposes and actual tax deductions reported on the Company’s income tax return are recorded in the Consolidated Statements of Operations within income tax expense. Earnings (Loss) Per Share Basic earnings (loss) per share (EPS) is computed by dividing net income (loss), less any dividends and deemed dividends related to the Series A convertible preferred stock (the Convertible Preferred Stock), by the weighted average number of common shares outstanding during the period. The numerator in diluted EPS is based on the basic EPS numerator adjusted to add back any dividends and deemed dividends related to the Convertible Preferred Stock, subject to antidilution requirements. The denominator used in diluted EPS is based on the basic EPS computation plus the effect of potentially dilutive common shares related to the Convertible Preferred Stock and equity-based compensation plans, subject to antidilution requirements. For the years ended December 31, 2020, 2019 and 2018, 17.4 million, 11.2 million and 2.1 million shares, respectively, of outstanding equity-based compensation awards were not included in the computation of diluted EPS because the effect was either antidilutive or the performance conditions were not met. Of those amounts, for the years ended December 31, 2020 and 2019, 4.4 million and 2.4 million shares, respectively, would have been considered dilutive if the Company had not been in a net loss position. For the year s ended December 31, 20 20 and 2019 , 37.1 million and million , respectively, of as-if converted shares related to the Convertible Preferred Stock were excluded from the diluted share count because they were anti-dilutive ; however, they would have been considered dilutive if the Company had not been in a net loss position . Year ended December 31, 2020 2019 2018 Numerator: Net income (loss) $ (573.4 ) $ (929.5 ) $ 140.2 Dividends on Series A convertible preferred stock (56.1 ) (40.7 ) — Deemed dividends on Series A convertible preferred stock — (3.0 ) — Net income (loss) attributable to common stockholders $ (629.5 ) $ (973.2 ) $ 140.2 Denominator: Weighted average common shares outstanding - basic 196.8 193.7 192.0 Dilutive effect of as-if converted Series A convertible preferred stock — — — Dilutive effect of equity-based awards — — 3.3 Weighted average common shares outstanding - diluted 196.8 193.7 195.3 Earnings (loss) per share: Basic $ (3.20 ) $ (5.02 ) $ 0.73 Diluted $ (3.20 ) $ (5.02 ) $ 0.72 Business Combinations The Company uses the acquisition method of accounting for business combinations which requires the tangible and intangible assets acquired and liabilities assumed to be recorded at their respective fair market value as of the acquisition date. Goodwill represents the excess of the consideration transferred over the fair value of the net assets acquired. The fair values of the assets acquired and liabilities assumed are determined based upon the Company’s valuation and involves making significant estimates and assumptions based on facts and circumstances that existed as of the acquisition date. The Company uses a measurement period following the acquisition date to gather information that existed as of the acquisition date that is needed to determine the fair value of the assets acquired and liabilities assumed. The measurement period ends once all information is obtained, but no later than one year from the acquisition date. Concentrations of Risk Non-derivative financial instruments used by the Company in the normal course of business include letters of credit and commitments to extend credit, primarily accounts receivable. The Company generally does not require collateral on its accounts receivable. These financial instruments involve risk, including the credit risk of nonperformance by the counterparties to those instruments, and the actual loss may exceed the reserves provided in the Company’s Consolidated Balance Sheets. See Note 17 for further discussion of customer-related concentrations of risk. The Company manages its exposures to credit risk associated with accounts receivable using such tools as credit approvals, credit limits and monitoring procedures. CommScope estimates the allowance for doubtful accounts based on the actual payment history and individual circumstances of significant customers as well as the age of receivables. In management’s opinion, as of December 31, 2020, the Company did not have significant unreserved risk of credit loss due to the non-performance of customers or other counterparties related to amounts receivable. However, an adverse change in financial condition of a significant customer or group of customers or in the telecommunications industry could materially affect the Company’s estimates related to doubtful accounts. The principal raw materials purchased by CommScope ( aluminum, bimetals, copper, optical fiber, plastics and other polymers and steel ) are subject to changes in market price as these materials are linked to various commodity markets. The Company attempts to mitigate these risks through effective requirements planning and by working closely with its key suppliers to obtain the best possible pricing and delivery terms. The Company relies on sole suppliers or a limited group of suppliers for certain key components (memory and chip capacitors), subassemblies and modules and a limited group of contract manufacturers to manufacture a significant portion of its products. Any disruption or termination of these arrangements could have a material adverse impact on the Company’s results of operations. Recent Accounting Pronouncements Adopted in 2020 On January 1, 2020, the Company adopted ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments and subsequent amendments to the initial guidance: ASU No. 2018-19, ASU No. 2019-04, ASU No. 2019-05 and ASU No. 2020-02 (collectively, Topic 326) the incurred loss methodology with the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including trade accounts receivable. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842. The Company adopted Topic 326 using the modified retrospective method for all financial assets measured at amortized cost, which are primarily trade accounts receivable and contract assets for the Company. Results for reporting periods beginning after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable U.S. GAAP. The impact of adopting Topic 326 as of January 1, 2020 was not material to the consolidated financial statements. Issued but Not Adopted In August 2020, the (FASB) issued ASU No. 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity . The new guidance simplifies the accounting for convertible instruments by reducing the number of accounting models available for convertible debt instruments and convertible preferred stock and amends the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions and requires the application of the if-converted method for calculating diluted earnings per share, along with expanded disclosures. ASU No. 2020-06 is effective for the Company as of January 1, 2022 and early adoption is permitted beginning January 1, 2021. The Company is currently evaluating the impact of the new guidance on the consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles to transactions affected by refer

Acquisition

Acquisition	12 Months Ended
Acquisition	Dec. 31, 2020
Business Combinations [Abstract]
Acquisition	3. ACQUISITION On April 4, 2019, the Company acquired all of the issued ordinary shares of ARRIS in an all cash transaction with a total consideration of approximately $7.7 billion, including debt assumed. ARRIS is a global leader in entertainment, communications and networking technology. The Company acquired ARRIS to drive profitable growth in new markets, shape the future of wired and wireless communications, and position the Company to benefit from key industry trends, including network convergence, fiber and mobility everywhere, 5G, Internet of Things and rapidly changing network and technology architectures. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date: Estimated Fair Value Assets Cash and cash equivalents $ 556.1 Accounts receivable 1,155.0 Inventory 995.5 Other current assets 132.0 Property, plant and equipment 316.6 Goodwill 2,981.4 Identifiable intangible assets 3,509.6 Other noncurrent assets 447.7 Less: Liabilities assumed Current liabilities (1,534.8 ) Debt (2,052.0 ) Other noncurrent liabilities (889.3 ) Net acquisition cost $ 5,617.8 The Company finalized the accounting for the business combination in the first quarter of 2020 and goodwill has been assigned accordingly. The goodwill arising from the Acquisition is believed to result from ARRIS’ reputation in the marketplace and assembled workforce and is not expected to be deductible for income tax purposes.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
Goodwill and Other Intangible Assets	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	4. GOODWILL AND OTHER INTANGIBLE ASSETS The following table presents details of the Company’s intangible assets other than goodwill as of December 31, 2020 and 2019: 2020 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer base $ 3,524.1 $ 1,563.2 $ 1,960.9 $ 3,503.3 $ 1,318.8 $ 2,184.5 Trade names and trademarks 1,024.3 376.6 647.7 1,021.9 308.3 713.6 Patents and technologies 2,039.7 997.9 1,041.8 2,021.6 656.1 1,365.5 Other 58.3 58.3 — 58.3 58.3 — Total intangible assets $ 6,646.4 $ 2,996.0 $ 3,650.4 $ 6,605.1 $ 2,341.5 $ 4,263.6 There were no impairments of finite-lived intangible assets identified during the years ended December 31, 2020, 2019 or 2018. Amortization expense for intangible assets was $630.5 million, $593.2 million and $264.6 million for the years ended December 31, 2020, 2019 and 2018, respectively. Future amortization expense as of December 31, 2020 is as follows: Estimated Amortization Expense 2021 $ 614.4 2022 547.4 2023 433.4 2024 346.1 2025 280.8 Thereafter 1,428.3 The following table presents goodwill by reportable segment. Foreign currency fluctuations are included within other adjustments. Additions (deductions) reflect the preliminary allocation and subsequent measurement period adjustments of the Company’s acquisition of ARRIS, which was completed in 2020. December 31, 2019 December 31, 2020 Goodwill Accumulated Impairment Losses Total Additions (Deductions) Impairment Other Goodwill Accumulated Impairment Losses Total Broadband $ 3,355.1 $ (193.6 ) $ 3,161.5 $ (7.1 ) $ — $ 21.7 $ 3,369.7 $ (193.6 ) $ 3,176.1 Home 402.1 (192.8 ) 209.3 (1.3 ) (206.7 ) (1.3 ) 399.5 (399.5 ) — OWN 666.0 (159.5 ) 506.5 — — 3.1 669.1 (159.5 ) 509.6 VCN 1,635.6 (41.2 ) 1,594.4 (1.4 ) — 7.8 1,642.0 (41.2 ) 1,600.8 Total $ 6,058.8 $ (587.1 ) $ 5,471.7 $ (9.8 ) $ (206.7 ) $ 31.3 $ 6,080.3 $ (793.8 ) $ 5,286.5 December 31, 2018 December 31, 2019 Goodwill Accumulated Impairment Losses Total Additions (Deductions) Impairment Other Goodwill Accumulated Impairment Losses Total Broadband $ 1,180.6 $ (51.5 ) $ 1,129.1 $ 2,171.2 $ (142.1 ) $ 3.3 $ 3,355.1 $ (193.6 ) $ 3,161.5 Home — — — 403.0 (192.8 ) (0.9 ) 402.1 (192.8 ) 209.3 OWN 666.4 (159.5 ) 506.9 — — (0.4 ) 666.0 (159.5 ) 506.5 VCN 1,216.3 — 1,216.3 417.0 (41.2 ) 2.3 1,635.6 (41.2 ) 1,594.4 Total $ 3,063.3 $ (211.0 ) $ 2,852.3 $ 2,991.2 $ (376.1 ) $ 4.3 $ 6,058.8 $ (587.1 ) $ 5,471.7 The Company’s change in segments as of January 1, 2020 resulted in a realignment of its existing reporting units. Although the reporting units were realigned under the new segments, the Company’s reporting units remained the same except for where two reporting units have been combined into a new reporting unit. In this case, goodwill was simply combined in the new reporting units. Since the composition of the reporting units and the assignment of goodwill to the reporting units were unaffected, an interim goodwill impairment test due to the change in segments was not performed in the first quarter of 2020. During the second quarter of 2020, the Company determined that indicators of goodwill impairment existed for the Home Networks reporting unit due to lower projected operating results, primarily from the accelerated decline in video devices. This trend was projected to continue as consumers adopt the use of other streaming applications and was further impacted by the macro-economic effects caused by the new strain of coronavirus (COVID-19). The Company performed a quantitative goodwill impairment test during the second quarter of 2020 and recorded a $206.7 million goodwill impairment charge during the second quarter 2020 relating to the Home Networks reporting unit. It is reflected in the asset impairments line on the Consolidated Statements of Operations for the year ended December 31, 2020. This reflected a full impairment of the remaining goodwill in the Home segment, and as such, the Home segment has no remaining goodwill balance as of December 31, 2020. There were no goodwill impairments identified as a result of the annual impairment test performed in the fourth quarter of 2020. For the year ended December 31, 2019, the Company recorded goodwill impairment charges totaling $376.1 million, of which $142.1 million related to the Network and Cloud reporting unit, $192.8 million related to the Home Networks reporting unit and $41.2 million related to the Ruckus reporting unit. There were no goodwill impairments identified for the year ended December 31, 2018. Estimating the fair value of a reporting unit involves uncertainties because it requires management to develop numerous assumptions, including assumptions about the future growth and potential volatility in revenues and costs, capital expenditures, industry economic factors and future business strategy. Changes in projected revenue growth rates, projected operating income margins or estimated discount rates due to uncertain market conditions, loss of one or more key customers, changes in the Company’s strategy, changes in technology or other factors could negatively affect the fair value in one or more of the Company’s reporting units and result in a material impairment charge in the future.

Revenue From Contracts With Cus

Revenue From Contracts With Customers	12 Months Ended
Revenue From Contracts With Customers	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue From Contracts With Customers	5. REVENUE FROM CONTRACTS WITH CUSTOMERS Disaggregated Net Sales The following table presents net sales by reportable segment, disaggregated based on contract type: Year Ended December 31, Broadband Home OWN VCN Total 2020 2019 2020 2019 2020 2019 2020 2019 2020 2019 Contract type: Product contracts $ 2,579.8 $ 2,072.3 $ 2,351.7 $ 2,529.4 $ 1,220.0 $ 1,452.5 $ 1,743.1 $ 1,861.8 $ 7,894.6 $ 7,916.0 Other contracts 315.9 291.5 8.3 9.6 23.7 22.5 193.4 105.5 541.3 429.1 Consolidated net sales $ 2,895.7 $ 2,363.8 $ 2,360.0 $ 2,539.0 $ 1,243.7 $ 1,475.0 $ 1,936.5 $ 1,967.3 $ 8,435.9 $ 8,345.1 The other contracts line above primarily includes service contracts, project contracts with multiple performance obligations and other contracts with revenue recognized over time. Further information on net sales by reportable segment and geographic region is included in Note 17. Allowance for Doubtful Accounts Year Ended December 31, 2020 2019 2018 Allowance for doubtful accounts, beginning of period $ 35.4 $ 17.4 $ 14.0 Charged to costs and expenses 5.0 10.6 6.0 Write-offs (3.2 ) (1.7 ) (1.2 ) Recoveries — — — Foreign exchange and other 3.1 9.1 (1.4 ) Allowance for doubtful accounts, end of period $ 40.3 $ 35.4 $ 17.4 Customer Contract Balances The following table provides the balance sheet location and amounts of contract assets and liabilities from contracts with customers. December 31, Balance Sheet Location 2020 2019 Unbilled accounts receivable Accounts receivable, less allowance for doubtful accounts $ 21.9 $ 28.6 Deferred revenue Accrued and other liabilities and Other noncurrent liabilities 143.2 122.2 There were no material changes to contract asset balances for the year ended December 31, 2020 as a result of changes in estimates or impairments. As of December 31, 2020, the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied and that have a duration of one year or less was $90.0 million, with the remaining $53.2 million having a duration greater than one year. Contract Liabilities The following table presents the changes in deferred revenue: Year Ended December 31, 2020 2019 Balance at beginning of period $ 122.2 $ 7.6 Fair value of deferred revenue acquired in ARRIS acquisition — 90.1 Deferral of revenue 186.7 124.8 Recognition of unearned revenue (165.7 ) (100.3 ) Balance at end of period $ 143.2 $ 122.2

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2020
Leases [Abstract]
Leases	6. LEASES The Company has operating type leases for real estate, equipment and vehicles both in the U.S. and internationally. As of December 31, 2020, the Company had no finance type leases. Operating lease expense was $105.2 million and $88.3 million for the years ended December 31, 2020 and 2019, respectively, inclusive of period cost for short-term, cancellable and variable leases, not included in lease liabilities, of $31.3 million and $26.7 million for the years ended December 31, 2020 and 2019, respectively. The Company occasionally subleases all or a portion of certain unutilized real estate facilities. As of December 31, 2020, the Company’s sublease arrangements were classified as operating type leases and the income amounts were not material for the years ended December 31, 2020 and 2019, respectively. Supplemental cash flow information related to operating leases: Year Ended December 31, 2020 2019 Operating cash paid to settle lease liabilities $ 74.6 $ 68.4 Right of use asset additions in exchange for lease liabilities 21.9 33.7 Supplemental balance sheet information related to operating leases: December 31, Balance Sheet Location 2020 2019 Right of use assets Other noncurrent assets $ 159.3 $ 204.9 Lease liabilities Accrued and other liabilities $ 62.4 $ 61.7 Lease liabilities Other noncurrent liabilities 119.1 160.4 Total lease liabilities $ 181.5 $ 222.1 Weighted average remaining lease term (in years) 3.9 Weighted average discount rate 7.4 % Future minimum lease payments under non-cancellable leases as of December 31, 2020 are as follows: Operating Leases 2021 $ 73.5 2022 48.2 2023 36.9 2024 25.5 2025 13.1 Thereafter 23.7 Total minimum lease payments $ 220.9 Less: imputed interest (39.4 ) Total $ 181.5

Supplemental Financial Statemen

Supplemental Financial Statement Information	12 Months Ended
Supplemental Financial Statement Information	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Supplemental Financial Statement Information	7. SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION Inventories December 31, 2020 2019 Raw materials $ 280.2 $ 240.1 Work in process 140.6 121.6 Finished goods 668.1 614.2 $ 1,088.9 $ 975.9 Property, Plant and Equipment December 31, 2020 2019 Land and land improvements $ 60.5 $ 57.4 Buildings and improvements 339.8 333.3 Machinery and equipment 916.7 849.9 Construction in progress 73.2 37.0 1,390.2 1,277.6 Accumulated depreciation (705.7 ) (553.8 ) $ 684.5 $ 723.8 Depreciation expense was $158.3 million, $143.7 million and $75.6 million during the years ended December 31, 2020, 2019 and 2018, respectively. No interest was capitalized during the years ended December 31, 2020, 2019 or 2018. Accrued and Other Liabilities December 31, 2020 2019 Compensation and employee benefit liabilities $ 277.9 $ 187.3 Operating lease liabilities 62.4 61.7 Accrued interest 120.2 97.8 Deferred revenue 90.0 82.6 Accrued royalties 21.9 63.9 Product warranty accrual 45.8 42.8 Restructuring reserve 22.0 24.0 Income taxes payable 13.0 15.8 Value-added taxes payable 29.3 27.3 Contract manufacturing liability 25.5 25.4 Patent claims and litigation settlements 25.7 70.1 Other 176.9 163.3 $ 910.6 $ 862.0 Accumulated Other Comprehensive Loss The following table presents changes in accumulated other comprehensive loss (AOCL), net of tax: Year Ended December 31, 2020 2019 Foreign currency translation Balance at beginning of period $ (162.7 ) $ (140.5 ) Other comprehensive income (loss) 82.2 (23.9 ) Amounts reclassified from AOCL — 1.7 Balance at end of period $ (80.5 ) $ (162.7 ) Hedging instruments Balance at beginning of period $ (8.9 ) $ (1.4 ) Other comprehensive loss (30.1 ) (7.5 ) Balance at end of period $ (39.0 ) $ (8.9 ) Defined benefit plan activity Balance at beginning of period $ (25.4 ) $ (17.3 ) Other comprehensive loss (10.9 ) (8.4 ) Amounts reclassified from AOCL (0.1 ) 0.3 Balance at end of period $ (36.4 ) $ (25.4 ) Net AOCL at end of period $ (155.9 ) $ (197.0 ) Amounts reclassified from net AOCL related to foreign currency translation and defined benefit plans are recorded in other expense, net in the Consolidated Statements of Operations. Cash Flow Information Year Ended December 31, 2020 2019 2018 Cash paid during the period for: Income taxes, net of refunds $ 94.4 $ 120.9 $ 112.1 Interest 520.9 465.2 231.3

Financing

Financing	12 Months Ended
Financing	Dec. 31, 2020
Debt Disclosure [Abstract]
Financing	8. FINANCING December 31, 2020 2019 7.125% senior notes due July 2028 $ 700.0 $ — 5.00% senior notes due March 2027 750.0 750.0 8.25% senior notes due March 2027 1,000.0 1,000.0 6.00% senior notes due June 2025 1,300.0 1,500.0 5.50% senior notes due June 2024 — 650.0 5.00% senior notes due June 2021 — 150.0 6.00% senior secured notes due March 2026 1,500.0 1,500.0 5.50% senior secured notes due March 2024 1,250.0 1,250.0 Senior secured term loan due April 2026 3,160.0 3,192.0 Senior secured revolving credit facility — — Total principal amount of debt $ 9,660.0 $ 9,992.0 Less: Original issue discount, net of amortization (24.8 ) (29.2 ) Less: Debt issuance costs, net of amortization (114.6 ) (130.4 ) Less: Current portion (32.0 ) (32.0 ) Total long-term debt $ 9,488.6 $ 9,800.4 Senior Notes In July 2020, CommScope, Inc., a wholly owned subsidiary of the Company, issued $700.0 million aggregate principal amount of 7.125% senior notes due July 2028 (the 2028 Notes). The 2028 Notes were offered in a private placement exempt from registration under the Securities Act of 1933, as amended (the Securities Act), to qualified institutional buyers pursuant to Rule 144A under the Securities Act and to certain non-U.S. persons outside of the United States in reliance on Regulation S under the Securities Act. The Company used the net proceeds from the offering of the 2028 Notes, together with cash on hand, to redeem and retire all of the outstanding 5.00% senior notes due 2021 (the 2021 Notes) and the outstanding 5.50% senior notes due 2024 (the 2024 Notes) and pay fees and expenses related to the transaction. The Company had previously redeemed $100.0 million of the 2021 Notes in February 2020. The redemption of the 2024 Notes resulted in a charge of $11.9 million which is reflected in other expense, net during the year ended December 31, 2020. In connection with the redemptions of the 2021 Notes and the 2024 Notes, $5.0 million of debt issuance costs were written off and included in interest expense during the year ended December 31, 2020. During 2019, $500.0 million aggregate principal amount of the 2021 Notes was redeemed and resulted in the write-off of $2.1 million of debt issuance costs, which was reflected in interest expense. In connection with issuing the 2028 Notes, the Company incurred costs of $11.7 million during the year ended December 31, 2020 which were recorded as a reduction of the carrying amount of the debt and are being amortized over the term of the 2028 Notes. As of December 31, 2020, the Company had outstanding two series of senior secured notes: (1) $1.5 billion of 6.00% senior secured notes due 2026 issued by CommScope, Inc. in February 2019 (the 2026 Secured Notes) and (2) $1.25 billion of 5.50% senior secured notes due 2024 issued by CommScope, Inc. in February 2019 (the 2024 Secured Notes and, together with the 2026 Secured Notes, the Secured Notes). In addition to the 2028 Notes, as of December 31, 2020, the Company had outstanding three series of senior notes: (1) $ 750.0 million initial aggregate principal amount of 5.00% senior notes due March 15, 2027 issued by CommScope Technologies LLC (CommScope Technologies), a wholly owned subsidiary of the Company, in March 2017 (the 5.00% 2027 Notes); (2) $1.3 billion aggregate principal amount of 6.00% senior notes due June 15, 2025 issued by CommScope Technologies in June 2015 (the 2025 Notes, and together with the 5.00% 2027 Notes, the CommScope Technologies Notes); (3) $1.0 billion initial aggregate principal amount of 8.25% senior notes due March 1, 2027 issued by CommScope, Inc. in February 2019 (the 8.25% 2027 Notes and, together with the 2028 Notes, the CommScope, Inc. Notes; the Secured Notes, the CommScope Technologies Notes and the CommScope, Inc. Notes, collectively, the Senior Notes). The indentures governing the Senior Notes contain covenants that restrict the ability of CommScope, Inc. and its restricted subsidiaries to, among other things, incur additional debt, make certain payments, including payment of dividends (except, in the case of the CommScope, Inc. Notes and the Secured Notes, with respect to the Convertible Preferred Stock) or repurchases of equity interests of CommScope, Inc. or the applicable issuer, make loans or acquisitions or capital contributions and certain investments, incur certain liens, sell assets, merge or consolidate or liquidate other entities and enter into certain transactions with affiliates. There are no financial maintenance covenants in the indentures governing the Senior Notes. Events of default under the indentures governing the Senior Notes include, among others, non-payment of principal or interest when due, covenant defaults, bankruptcy and insolvency events and cross acceleration to material debt. 6.00% Senior Secured Notes due 2026 and 5.50% Senior Secured Notes due 2024 (the Secured Notes) The 2024 Secured Notes mature on March 1, 2024 and the 2026 Secured Notes mature on March 1, 2026. Interest is payable on the Secured Notes semi-annually in arrears on March 1 and September 1 of each year. The Secured Notes are guaranteed on a senior secured basis by the Company and each of CommScope, Inc.’s existing and future wholly owned domestic restricted subsidiaries that is an obligor under the senior secured credit facilities or certain other debt, subject to certain exceptions. The Secured Notes and the related guarantees are secured on a first-priority basis by security interests in all of the assets that secure indebtedness under the 2026 Term Loan (as defined below) on a first-priority basis, and on a second-priority basis in all assets that secure the Revolving Credit Facility (as defined below) on a first-priority basis and the 2026 Term Loan on a second-priority basis. The Secured Notes and the related guarantees rank senior in right of payment to all of CommScope, Inc.’s and the guarantors’ subordinated indebtedness and equally in right of payment with all of CommScope, Inc.’s and the guarantors’ senior indebtedness (without giving effect to collateral arrangements), including the senior secured credit facilities and the other Senior Notes. The Secured Notes and the related guarantees are effectively senior to all of CommScope, Inc.’s and the guarantors’ unsecured indebtedness and debt secured by a lien junior to the liens securing the Secured Notes, in each case to the extent of the value of the collateral, and effectively equal to all of CommScope, Inc.’s and the guarantors’ senior indebtedness secured on the same priority basis as the Secured Notes, including the 2026 Term Loan. The Secured Notes and the related guarantees are effectively subordinated to any of CommScope, Inc.’s or the guarantors’ indebtedness that is secured by assets that do not constitute collateral for the Secured Notes and effectively subordinated to any of CommScope, Inc.’s or the guarantors’ indebtedness that is secured by a senior-priority lien, including under the Revolving Credit Facility, in each case to the extent of the value of the assets securing such indebtedness. In addition, the Secured Notes and related guarantees are structurally subordinated to all existing and future liabilities (including trade payables) of CommScope, Inc.’s subsidiaries that do not guarantee the Secured Notes. The Secured Notes may be redeemed prior to maturity under certain circumstances. Upon certain change of control events, the Secured Notes may be redeemed at the option of the holders at 101% of their face amount, plus accrued and unpaid interest. The 2024 Secured Notes may be redeemed on or after March 1, 2021 by CommScope, Inc. at the redemption prices specified in the indenture governing the Secured Notes. Prior to March 1, 2021, the 2024 Secured Notes may be redeemed by CommScope, Inc. at a redemption price equal to 100% of their principal amount, plus a make-whole premium (as specified in the indenture governing the Secured Notes), plus accrued and unpaid interest. Prior to March 1, 2021, under certain circumstances, CommScope, Inc. may also redeem up to 40% of the aggregate principal amount of the 2024 Secured Notes at a redemption price of 105.50%, plus accrued and unpaid interest, using the proceeds of certain equity offerings. At any time prior to March 1, 2021, CommScope, Inc. may redeem during each calendar year up to 10.0% of the aggregate principal amount of the 2024 Secured Notes at a redemption price equal to 103.0% of the aggregate principal amount of the 2024 Secured Notes to be redeemed, plus accrued and unpaid interest, if any, to, but not including, the date of redemption. The 2026 Secured Notes may be redeemed on or after March 1, 2022 by CommScope, Inc. at the redemption prices specified in the indenture governing the 2026 Secured Notes. Prior to March 1, 2022, the 2026 Secured Notes may be redeemed by CommScope, Inc. at a redemption price equal to 100% of their principal amount, plus a make-whole premium (as specified in the indenture governing the Secured Notes), plus accrued and unpaid interest. Prior to March 1, 2022, under certain circumstances, CommScope, Inc. may also redeem up to 40% of the aggregate principal amount of the 2026 Secured Notes at a redemption price of 106.00%, plus accrued and unpaid interest, using the proceeds of certain equity offerings. At any time prior to March 1, 2022, CommScope, Inc. may redeem during each calendar year up to 10.0% of the aggregate principal amount of the 2026 Secured Notes at a redemption price equal to 103.0% of the aggregate principal amount of the 2026 Secured Notes to be redeemed, plus accrued and unpaid interest, if any, to, but not including, the date of redemption. 7.125% Senior Notes due 2028 and 8.25% Senior Notes due 2027 (the CommScope, Inc. Notes) The 2028 Notes mature on July 1, 2028 and the 8.25% 2027 Notes mature on March 1, 2027. Interest is payable semi-annually in arrears on the 2028 Notes on July 1 and January 1 of each year and on the 8.25% 2027 Notes on March 1 and September 1 of each year. The CommScope, Inc. Notes are guaranteed on a senior unsecured basis by each of CommScope, Inc.’s existing and future wholly owned domestic restricted subsidiaries that is an obligor under the senior secured credit facilities or certain other capital markets debt, subject to certain exceptions. The CommScope, Inc. Notes and the related guarantees rank senior in right of payment to all of CommScope, Inc.’s and the guarantors’ subordinated indebtedness and equally in right of payment with all of CommScope, Inc.’s and the guarantors’ senior indebtedness (without giving effect to collateral arrangements), including the senior secured credit facilities and the other Senior Notes. The CommScope, Inc. Notes and the related guarantees are effectively junior to all of CommScope, Inc.’s and the guarantors’ existing and future secured indebtedness, including the Secured Notes and the senior secured credit facilities, to the extent of the value of the assets securing such secured indebtedness. In addition, the CommScope, Inc. Notes and related guarantees are structurally subordinated to all existing and future liabilities (including trade payables) of CommScope, Inc.’s subsidiaries that do not guarantee the CommScope, Inc. Notes. The CommScope, Inc. Notes may be redeemed prior to maturity under certain circumstances. Upon certain change of control events, the CommScope, Inc. Notes may be redeemed at the option of the holders at 101% of their principal amount, plus accrued and unpaid interest. The 2028 Notes may be redeemed by CommScope, Inc. on or after July 1, 2023 at the redemption prices specified in the indenture governing the 2028 Notes. Prior to July 1, 2023, the 2028 Notes may be redeemed by CommScope, Inc. at a redemption price equal to 100% of their principal amount, plus a make-whole premium (as specified in the indenture governing the 2028 Notes), plus accrued and unpaid interest. Prior to July 1, 2023, under certain circumstances, CommScope, Inc. may also redeem up to 40% of the aggregate principal amount of the 2028 Notes at a redemption price of 107.125%, plus accrued and unpaid interest, using the proceeds of certain equity offerings. The 8.25% 2027 Notes may be redeemed by CommScope, Inc. on or after March 1, 2022 at the redemption prices specified in the indenture governing the 8.25% 2027 Notes. Prior to March 1, 2022, the 8.25% 2027 Notes may be redeemed by CommScope, Inc. at a redemption price equal to 100% of their principal amount, plus a make-whole premium (as specified in the indenture governing the 8.25% 2027 Notes), plus accrued and unpaid interest. Prior to March 1, 2022, under certain circumstances, CommScope, Inc. may also redeem up to 40% of the aggregate principal amount of the 8.25% 2027 Notes at a redemption price of 108.25%, plus accrued and unpaid interest, using the proceeds of certain equity offerings. 5.00% Senior Notes due 2027 and 6.00% Senior Notes due 2025 (the CommScope Technologies Notes) The 5.00% 2027 Notes mature on March 15, 2027 and the 2025 Notes mature on June 15, 2025. Interest is payable on the 5.00% 2027 Notes semi-annually in arrears on March 15 and September 15 of each year and on the 2025 Notes on June 15 and December 15 of each year. The CommScope Technologies Notes are guaranteed on a senior unsecured basis by CommScope, Inc. and each of CommScope, Inc.’s existing and future wholly owned domestic restricted subsidiaries (other than CommScope Technologies) that is an obligor under the senior secured credit facilities or certain other capital markets debt, subject to certain exceptions. The CommScope Technologies Notes and the related guarantees rank senior in right of payment to all of CommScope Technologies’ and the guarantors’ subordinated indebtedness and equally in right of payment with all of CommScope Technologies’ and the guarantors’ senior indebtedness (without giving effect to collateral arrangements), including the senior secured credit facilities and the other Senior Notes. The CommScope Technologies Notes and the related guarantees are effectively junior to all of CommScope Technologies’ and the guarantors’ existing and future secured indebtedness, including the Secured Notes and the senior secured credit facilities, to the extent of the value of the assets securing such secured indebtedness. In addition, the CommScope Technologies Notes and related guarantees are structurally subordinated to all existing and future liabilities (including trade payables) of CommScope, Inc.’s subsidiaries that do not guarantee the CommScope Technologies Notes. The CommScope Technologies Notes may be redeemed prior to maturity under certain circumstances. Upon certain change of control events, the CommScope Technologies Notes may be redeemed at the option of the holders at 101% of their principal amount, plus accrued and unpaid interest. The 5.00% 2027 Notes may be redeemed by CommScope Technologies on or after March 15, 2022 at the redemption prices specified in the indenture governing the 5.00% 2027 Notes. Prior to March 15, 2022, the 5.00% 2027 Notes may be redeemed by CommScope Technologies at a redemption price equal to 100% of the aggregate principal amount of the 5.00% 2027 Notes to be redeemed, plus a make-whole premium (as specified in the indenture governing the 5.00% 2027 Notes), plus accrued and unpaid interest. The 2025 Notes may be redeemed by CommScope Technologies at the redemption prices specified in the indenture governing the 2025 Notes. During the year ended December 31, 2020, the Company redeemed $200.0 million aggregate principal amount of the 2025 Notes, which resulted in charges of $6.0 million that are reflected in other expense, net. In connection with the redemptions, $2.6 million of debt issuance costs was written off and included in interest expense during the year ended December 31, 2020. Senior Secured Credit Facilities Senior Secured Term Loan due 2026 The senior secured term loan due 2026 (the 2026 Term Loan) has scheduled amortization payments of $32.0 million per year due in equal quarterly installments, which began with the quarter ended December 31, 2019, with the balance due at maturity (April 2026). The interest rate is, at the Company’s option, either (1) the base rate (which is the highest of (w) the greater of the then-current federal funds rate set by the Federal Reserve Bank of New York and the overnight federal funds rate, in each case, plus 0.5%, (x) the prime rate on such day, (y) the one-month Eurodollar rate published on such date plus 1.00% and (z) 1.00% per annum) plus an applicable margin of 2.25% or (2) one-, two-, three- or six-month LIBOR or, if available from all lenders, 12-month LIBOR or any shorter period (selected at the option of CommScope, Inc.) plus an applicable margin of 3.25%. The 2026 Term Loan is subject to a LIBOR floor of 0.00%. Subject to certain conditions, the 2026 Term Loan may be increased or a new incremental term loan facility may be added to increase the capacity by up to the sum of the greater of $950.0 million and 50% of Consolidated EBITDA, as defined in the credit agreement governing the 2026 Term Loan (the Credit Agreement), plus an unlimited amount as long as on a pro forma basis the Company meets certain net leverage ratios or fixed charge ratios as defined in the Credit Agreement. CommScope, Inc. may voluntarily prepay loans under the 2026 Term Loan, subject to minimum amounts, with prior notice but without premium or penalty. CommScope, Inc. must prepay the 2026 Term Loan with the net cash proceeds of certain asset sales, the incurrence or issuance of specified refinancing indebtedness and, commencing with the fiscal year ending in December 2020, 50% of excess cash flow (such percentage subject to reduction based on the achievement of specified Consolidated First Lien Net Leverage Ratios), in each case, subject to certain reinvestment rights and other exceptions. CommScope, Inc.’s obligations under the 2026 Term Loan are guaranteed by the Company and each of CommScope, Inc.’s direct and indirect wholly owned U.S. subsidiaries (subject to certain permitted exceptions based on immateriality thresholds of aggregate assets and revenues of excluded U.S. subsidiaries). The 2026 Term Loan is secured by a lien on substantially all of CommScope, Inc.’s and the guarantors’ current and fixed assets (subject to certain exceptions), and the 2026 Term Loan will have a first-priority lien on all fixed assets and a second-priority lien on all current assets (second in priority to the liens securing the Revolving Credit Facility), in each case, subject to other permitted liens. The 2026 Term Loan contains customary negative covenants consistent with those applicable to the New Notes, including, but not limited to, restrictions on the ability of CommScope, Inc. and its subsidiaries to merge and consolidate with other companies, incur indebtedness, grant liens or security interests on assets, pay dividends (except with respect to the Convertible Preferred Stock) or make other restricted payments, sell or otherwise transfer assets or enter into certain transactions with affiliates. The 2026 Term Loan provides that, upon the occurrence of certain events of default, the obligations thereunder may be accelerated. Such events of default will include payment defaults, material inaccuracies of representations and warranties, covenant defaults, cross-defaults to other material indebtedness, voluntary and involuntary bankruptcy proceedings, material money judgments, material pension-plan events, change of control and other customary events of default. During the year ended December 31, 2020, the Company made scheduled amortization payments of $32.0 million due in equal quarterly installments on the 2026 Term Loan. The current portion of long-term debt reflects $32.0 million of repayments due under the 2026 Term Loan. No portion of the 2026 Term Loan was reflected as a current portion of long-term debt as of December 31, 2020 related to the potentially required excess cash flow payment because no such payment is expected to be required. During 2019, the Company paid off the then existing senior secured term loan due 2022 (the 2022 Term Loan). In connection with the repayments of the 2022 Term Loan, $4.1 million of original issue discount and $7.7 million of debt issuance costs were written off and included in interest expense for the year ended December 31, 2019. The Company also incurred ticking fees related to the 2026 Term Loan of $12.3 million during the year ended December 31, 2019 that were included in interest expense. Senior Secured Revolving Credit Facility The Company’s asset-based revolving credit facility (the Revolving Credit Facility) provides borrowing capacity of up to $1.0 billion, subject to certain limitations, with a maturity in April 2024, available to CommScope, Inc. and its U.S. subsidiaries designated as co-borrowers (the Revolving Borrowers). The ability to draw under the Revolving Credit Facility or issue letters of credit is conditioned upon, among other things, delivery of prior written notice of a borrowing or issuance, as applicable, the ability of the borrowers to reaffirm the representations and warranties contained in the Revolving Credit Facility and the absence of any default or event of default. The Company borrowed and repaid $250.0 million under the Revolving Credit Facility during the year ended December 31, 2020. As of December 31, 2020, the Company had no outstanding borrowings under the Revolving Credit Facility and had availability of $735.1 million, after giving effect to borrowing base limitations and outstanding letters of credit. Letters of credit under the Revolving Credit Facility are limited to the lesser of (x) $250.0 million and (y) the aggregate unused amount of commitments under the Revolving Credit Facility then in effect. Subject to certain conditions, the Revolving Credit Facility may be expanded by up to $400.0 million in additional commitments. Loans under the Revolving Credit Facility may be denominated, at the option of the Revolving Borrowers, in U.S. dollars, euros, pounds sterling or Swiss francs. Borrowings under the Revolving Credit Facility are limited by borrowing base calculations based on the sum of specified percentages of eligible accounts receivable and eligible inventory, minus the amount of any applicable reserves. Borrowings will bear interest at a floating rate, which can be either an adjusted Eurodollar rate plus an applicable margin of 1.25% to 1.50% or, at the option of the Revolving Borrowers, a base rate plus an applicable margin of 0.25% to 0.50%. The obligations of the Revolving Borrowers under the Revolving Credit Facility are guaranteed by the Company, CommScope, Inc. and each of CommScope, Inc.’s direct and indirect wholly owned U.S. subsidiaries (subject to certain permitted exceptions based on immateriality thresholds of aggregate assets and revenues of excluded U.S. subsidiaries). The Revolving Credit Facility is secured by a lien on substantially all of the Revolving Borrowers’ and the guarantors’ current and fixed assets (subject to certain exceptions). The Revolving Credit Facility has a first-priority lien on all current assets and a second-priority lien on all fixed assets (second in priority to the liens securing the 2024 Secured Notes, the 2026 Secured Notes and the 2026 Term Loan), in each case, subject to other permitted liens. The following fees are applicable under the Revolving Credit Facility: (i) an unused line fee of (x) 0.25% per annum of the unused portion of the Revolving Credit Facility when the average unused portion of the facility is less than 50% of the aggregate commitments under the Revolving Credit Facility or (y) 0.375% per annum of the unused portion of the Revolving Credit Facility when the average unused portion of the facility is equal to or greater than 50% of the aggregate commitments under the Revolving Credit Facility; (ii) a letter of credit participation fee on the aggregate stated amount of each letter of credit equal to the applicable margin for adjusted Eurodollar rate loans, as applicable; (iii) a letter of credit fronting fee of 0.125% per annum, multiplied by the average aggregate daily maximum amount available to be drawn under all applicable letters of credit issued by such letter of credit issuer; and (iv) certain other customary fees and expenses of the lenders and agents thereunder. The Revolving Borrowers will be required to make prepayments under the Revolving Credit Facility at any time when, and to the extent that, the aggregate amount of the outstanding loans and letters of credit under the Revolving Credit Facility exceeds the lesser of the aggregate amount of commitments in respect of the Revolving Credit Facility and the borrowing base. The Revolving Credit Facility contains customary covenants, including, but not limited to, restrictions on the ability of CommScope, Inc. and its subsidiaries to merge and consolidate with other companies, incur indebtedness, grant liens or security interests on assets, make acquisitions, loans, advances or investments, pay dividends (except with respect to the Convertible Preferred Stock), sell or otherwise transfer assets, optionally prepay or modify terms of any junior indebtedness, enter into certain transactions with affiliates or change lines of business. The Revolving Credit Facility contains a Covenant Fixed Charge Coverage Ratio (as defined in the credit agreement governing the Revolving Credit Facility) of 1.00 to 1.00. The credit agreement provides that the Covenant Fixed Charge Coverage Ratio must be tested and must exceed the level set forth above only; in the event that excess availability under the Revolving Credit Facility is less than the greater of $80 million and 10% of the borrowing base as of the end of the most recent fiscal quarter. As of December 31, 2020, the Company’s excess availability and Covenant Fixed Charge Coverage Ratio were in excess of the Revolving Credit Facility’s requirements. The Revolving Credit Facility provides that, upon the occurrence of certain events of default, the obligations thereunder may be accelerated and the lending commitments terminated. Such events of default include payment defaults, material inaccuracies of representations and warranties, covenant defaults, cross-defaults to other material indebtedness, voluntary and involuntary bankruptcy proceedings, material money judgments, material pension-plan events, certain change of control events and other customary events of default. Other Matters The following table summarizes scheduled maturities of long-term debt as of December 31, 2020: 2021 2022 2023 2024 2025 Thereafter Scheduled maturities of long-term debt $ 32.0 $ 32.0 $ 32.0 $ 1,282.0 $ 1,332.0 $ 6,950.0 The Company’s non-guarantor subsidiaries held $2,466 million, or 18%, of total assets and $956 million, or 8%, of total liabilities as of December 31, 2020 and accounted for $2,430 million, or 29%, of net sales for the year ended December 31, 2020. As of December 31, 2019, the non-guarantor subsidiaries held $3,773 million, or 26%, of total assets and $714 million, or 6%, of total liabilities. For the year ended December 31, 2019, the non-guarantor subsidiaries accounted for $3,044 million, or 37%, of net sales. All amounts presented exclude intercompany balances. The Company is dependent upon the earnings and cash flow of its subsidiaries to make certain payments, including debt and interest payments. Certain subsidiaries may have limitations or restrictions on transferring funds to other subsidiaries that may be necessary to meet those requirements. The weighted average effective interest rate on outstanding borrowings, including the impact of the interest rate swap, and the amortization of debt issuance costs and original issue discount, was 5.86% at December 31, 2020 and 6.13% at December 31, 2019.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	12 Months Ended
Derivatives and Hedging Activities	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	9. DERIVATIVES AND HEDGING ACTIVITIES Derivatives Not Designated As Hedging Instruments The Company uses forward contracts to hedge a portion of its balance sheet foreign exchange re-measurement risk and to hedge certain planned foreign currency expenditures. As of December 31, 2020, the Company had foreign exchange contracts outstanding with maturities of up to six months and aggregate notional values of $515.5 million (based on exchange rates as of December 31, 2020). Unrealized gains and losses resulting from these contracts are recognized in other expense, net and partially offset corresponding foreign exchange gains and losses on the balances and expenditures being hedged. The following table presents the balance sheet location and fair value of the Company’s derivatives not designated as hedging instruments: December 31, Contract Type Location of Asset (Liability) 2020 2019 Foreign currency contracts Prepaid expenses and other current assets $ 11.7 $ 4.9 Foreign currency contracts Accrued and other liabilities (3.3 ) (5.9 ) Total derivatives not designated as hedging instruments $ 8.4 $ (1.0 ) The pretax impact of the foreign currency forward contracts, both matured and outstanding, on the Consolidated Statements of Operations is as follows: Year Ended December 31, Location of Gain (Loss) 2020 2019 2018 Other expense, net $ 24.9 $ (13.6 ) $ (17.8 ) Derivative Instruments Designated As Net Investment Hedges The Company has a hedging strategy to designate certain foreign currency contracts as net investment hedges to mitigate a portion of the foreign currency risk on the euro net investment in a foreign subsidiary. As of December 31, 2020, the Company held designated foreign currency contracts with outstanding maturities of up to six months and an aggregate notional value of $300 million. As of December 31, 2020 and 2019, there was no ineffectiveness on the instruments designated as net investment hedges. The following table presents the balance sheet location and fair value of the derivative instruments designated as net investment hedges: December 31, Contract Type Location of Asset (Liability) 2020 2019 Foreign currency contracts Other noncurrent assets $ — $ 5.8 Foreign currency contracts Accrued and other liabilities (21.1 ) — Total derivatives designated as net investment hedging instruments $ (21.1 ) $ 5.8 The after tax impact of the forward contracts designated as net investment hedging instruments, both matured and outstanding, on the Consolidated Statements of Operations is as follows : Year Ended December 31, Location of Gain (Loss) 2020 2019 2018 Other comprehensive income (loss), net of tax $ (19.9 ) $ 5.6 $ 3.5 Derivative Instruments Designated As Cash Flow Hedges of Interest Rate Risk The Company has a hedging strategy to mitigate a portion of the exposure to changes in cash flows resulting from variable interest rates on the senior secured term loan due 2026. The total notional amount of the interest rate swap derivatives as of December 31, 2020 was $600 million with outstanding maturities up to thirty-nine months. As of December 31, 2020 and 2019, there was no ineffectiveness on the instruments designated as cash flow hedges. The Company did not have derivative instruments designated as cash flow hedges of interest rate during the year ended December 31, 2018. The following table presents the balance sheet location and fair value of the derivative instruments designated as cash flow hedges of interest rate risk: December 31, Contract Type Location of Asset (Liability) 2020 2019 Interest rate swap contracts Other noncurrent liabilities $ (29.9 ) $ (16.3 ) The impact of the effective portion of the interest rate swap contracts designated as cash flow hedging instruments on the Consolidated Statements of Comprehensive Income (Loss) is as follows: Year Ended December 31, Location of Gain (Loss) 2020 2019 Other comprehensive income (loss), net of tax $ (10.2 ) $ (12.2 )

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	10. FAIR VALUE MEASUREMENTS The Company’s financial instruments consist primarily of cash and cash equivalents, trade receivables, trade payables, debt instruments, interest rate derivatives and foreign currency contracts. For cash and cash equivalents, trade receivables and trade payables, the carrying amounts of these financial instruments as of December 31, 2020 and December 31, 2019 were considered representative of their fair values due to their short terms to maturity. The fair values of the Company’s debt instruments, interest rate derivatives and foreign currency contracts were based on indicative quotes. Fair value measurements using quoted prices in active markets for identical assets and liabilities fall within Level 1 of the fair value hierarchy, measurements using significant other observable inputs fall within Level 2, and measurements using significant unobservable inputs fall within Level 3. The carrying amounts, estimated fair values and valuation input levels of the Company’s debt instruments, interest rate derivatives and foreign currency contracts as of December 31, 2020 and December 31, 2019, are as follows: December 31, 2020 December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value Valuation Inputs Assets: Foreign currency contracts $ 11.7 $ 11.7 $ 10.7 $ 10.7 Level 2 Liabilities: 7.125% senior notes due 2028 $ 700.0 $ 743.8 $ — $ — Level 2 5.00% senior notes due 2027 750.0 741.5 750.0 696.4 Level 2 8.25% senior notes due 2027 1,000.0 1,068.5 1,000.0 1,052.5 Level 2 6.00% senior notes due 2025 1,300.0 1,329.3 1,500.0 1,501.7 Level 2 5.50% senior notes due 2024 — — 650.0 656.0 Level 2 5.00% senior notes due 2021 — — 150.0 149.9 Level 2 6.00% senior secured notes due 2026 1,500.0 1,576.8 1,500.0 1,595.6 Level 2 5.50% senior secured notes due 2024 1,250.0 1,285.9 1,250.0 1,302.1 Level 2 Senior secured term loan due 2026 3,160.0 3,156.1 3,192.0 3,219.9 Level 2 Senior secured revolving credit facility — — — — Level 2 Foreign currency contracts 24.4 24.4 5.9 5.9 Level 2 Interest rate swap contracts 29.9 29.9 16.3 16.3 Level 2 Non-Recurring Fair Value Measurements During the second quarter of 2020, the Company recorded a pretax goodwill impairment charge of $206.7 million related to the Home Networks reporting unit in the Home segment (see Note 4). The fair value of the reporting unit was determined as of May 31, 2020 using a DCF model. Under the DCF method, the fair value of a reporting unit is based on the present value of estimated future cash flows. The inputs to the DCF model were Level 3 valuation inputs. During the fourth quarter of 2019, the Company recorded a pretax goodwill impairment charge of $376.1 million related to the Broadband, Home and VCN segments (see Note 4). The determination of the impairment charge was based on Level 3 valuation inputs. These fair value estimates are based on pertinent information available to management as of the valuation date. Although management is not aware of any factors that would significantly affect these fair value estimates, such amounts have not been comprehensively revalued for purposes of these financial statements since those dates, and current estimates of fair value may differ significantly from the amounts presented.

Restructuring Costs

Restructuring Costs	12 Months Ended
Restructuring Costs	Dec. 31, 2020
Restructuring And Related Activities [Abstract]
Restructuring Costs	11. RESTRUCTURING COSTS The Company incurs costs associated with restructuring initiatives intended to improve overall operating performance and profitability. The costs related to restructuring actions are generally cash-based and primarily consist of employee-related costs, which include severance and other one-time termination benefits. In addition to the employee-related costs, the Company records other costs associated with restructuring actions such as the (gain) loss on the sale of facilities and impairment costs arising from unutilized real estate or equipment. The Company attempts to sell or lease this unutilized space but additional impairment charges may be incurred related to these or other excess assets. The Company’s net pretax restructuring charges, by segment, were as follows: Year Ended December 31, 2020 2019 2018 Broadband $ 17.8 $ 36.9 $ 11.7 Home 30.0 23.2 — OWN 15.7 6.9 17.1 VCN 24.9 20.7 15.2 Total $ 88.4 $ 87.7 $ 44.0 Restructuring reserves were included in the Company’s Consolidated Balance Sheets as follows: December 31, 2020 2019 Accrued and other liabilities $ 22.0 $ 24.0 Other noncurrent liabilities 4.0 4.4 Total liability $ 26.0 $ 28.4 ARRIS Integration Restructuring Actions In anticipation of and following the Acquisition, the Company initiated a series of restructuring actions, which are currently ongoing, to integrate and streamline operations and achieve cost synergies. The activity within the liability established for the ARRIS integration restructuring actions was as follows: Employee- Related Costs Other Total Balance at December 31, 2018 $ — $ — $ — Obligation assumed in ARRIS acquisition 2.3 — 2.3 Additional expense 81.8 4.3 86.1 Cash paid (60.9 ) (1.0 ) (61.9 ) Non-cash items (0.1 ) (1.3 ) (1.4 ) Balance at December 31, 2019 23.1 2.0 25.1 Additional expense 78.3 10.1 88.4 Cash (paid) received (77.2 ) 3.0 (74.2 ) Non-cash items 0.2 (14.3 ) (14.1 ) Balance at December 31, 2020 $ 24.4 $ 0.8 $ 25.2 The ARRIS integration actions include headcount reductions in manufacturing, sales, engineering, marketing and administrative functions. The Company expects to make cash payments of $21.4 million during 2021 and additional cash payments of $3.8 million in 2022 to settle the announced ARRIS integration initiatives. The Company continues to implement certain facility consolidation actions as part of its ARRIS integration plans. During the year ended December 31, 2020 , the Company completed the sale of its facility in Forest, V irginia and recorded net proceeds of $ 4.8 million resulting in a gain on the sale of the facility of $ 2.1 million , which is included in restructuring costs, net on the Consolidated Statements of Operations . In addition, during the year ended December 31, 2020, the Company recorded $ 8.8 million of impairment of operating lease right of use assets related to ceasing use of certain leased facilities and $ 2.8 million of fixed asset impairments as part of restructuring activities , which are both included in restructuring costs, net on the Consolidated Statements of Operations . Additional restructuring actions related to the ARRIS integration are expected to be identified and the resulting charges and cash requirements are expected to be material. BNS Integration Restructuring Actions Following the acquisition of Broadband Network Solutions (BNS) business in 2015, the Company initiated a series of restructuring actions to integrate and streamline operations and achieve cost synergies. The BNS integration actions include the announced closures or reduction in activities at various U.S. and international facilities as well as headcount reductions in sales, marketing and administrative functions. The Company has recognized restructuring charges of $153.0 million since the BNS acquisition for integration actions. No additional restructuring actions are expected in connection with the BNS integration initiatives. The Company has accrued $0.8 million for these BNS integration restructuring actions as of December 31, 2020. The Company paid $2.5 million during the year ended December 31, 2020 and expects to make cash payments of $0.8 million between 2021 and 2022.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	12. EMPLOYEE BENEFIT PLANS Defined Contribution Plans The Company and certain of its subsidiaries have defined contribution retirement savings plans, the most significant of which is a 401(k) plan in the U.S. These plans allow employees meeting certain requirements to contribute a portion of their compensation on a pretax and/or after-tax basis in accordance with guidelines established by the plans and the Internal Revenue Service or other tax authorities. The Company matches a percentage of the employee contributions up to certain limits. During the years ended December 31, 2020, 2019 and 2018, the Company made contributions to defined contribution retirement savings plans of $56.6 million, $41.8 million and $24.0 million, respectively. The Company also maintains noncontributory and contributory deferred compensation plans. During the years ended December 31, 2020, 2019 and 2018, the Company recognized pretax costs of $2.6 million, $3.5 million and $0.7 million, respectively, related to these plans. The liability related to these plans was $43.2 million and $43.8 million as of December 31, 2020 and 2019, respectively. Pension Plans The Company sponsors defined benefit pension plans covering certain active and former domestic and foreign employees. Included in the defined benefit pension plans are both funded and unfunded plans. The following table summarizes information for the defined benefit pension plans: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation, beginning $ 12.8 $ 2.2 $ 251.5 $ 208.8 Obligation assumed in ARRIS acquisition — 10.0 — 12.6 Service cost — — 4.3 4.0 Interest cost 0.3 0.3 4.0 5.2 Actuarial loss 1.1 0.9 29.1 27.5 Benefits paid (0.7 ) (0.6 ) (5.3 ) (4.6 ) Settlements — — (9.2 ) (6.4 ) Foreign exchange and other — — 36.1 4.4 Benefit obligation, ending $ 13.5 $ 12.8 $ 310.5 $ 251.5 Change in plan assets: Fair value of plan assets, beginning $ — $ — $ 230.8 $ 203.4 Assets assumed in ARRIS acquisition — — — 4.2 Employer and plan participant contributions 0.7 0.6 6.8 4.9 Return on plan assets — — 23.2 25.0 Benefits paid (0.7 ) (0.6 ) (5.3 ) (4.6 ) Settlements — — (9.2 ) (6.4 ) Foreign exchange and other — — 32.8 4.3 Fair value of plan assets, ending $ — $ — $ 279.1 $ 230.8 Funded status, net liability $ 13.5 $ 12.8 $ 31.4 $ 20.7 The following table presents the balance sheet location of the Company's pension liabilities and assets: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Accrued and other liabilities $ (0.8 ) $ (0.8 ) $ (0.5 ) $ (0.5 ) Other noncurrent liabilities (12.7 ) (12.0 ) (34.4 ) (23.2 ) Other noncurrent assets — — 3.5 3.0 The accumulated benefit obligation for the Company’s U.S. defined benefit pension plans was $13.5 million and $12.8 million as of December 31, 2020 and 2019, respectively, and the accumulated benefit obligation for the Company’s non-U.S. defined benefit pension plans was $261.8 million and $211.8 million as of December 31, 2020 and 2019, respectively. The following table summarizes information for the Company’s pension plans with an accumulated benefit obligation in excess of plan assets: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Projected benefit obligation $ 13.5 $ 12.8 $ 51.5 $ 30.9 Accumulated benefit obligation 13.5 12.8 48.5 26.1 Fair value of plan assets — — 26.1 8.5 The following table summarizes pretax amounts included in accumulated other comprehensive loss: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Unrecognized net actuarial loss $ (2.3 ) $ (1.3 ) $ (43.4 ) $ (31.5 ) Unrecognized prior service cost — — (0.5 ) (0.7 ) Total $ (2.3 ) $ (1.3 ) $ (43.9 ) $ (32.2 ) Actuarial gains and losses are amortized using a corridor approach. The corridor is equal to 10% of the greater of the benefit obligation and the fair value of the assets. Gains and losses in excess of the corridor are generally amortized over the average remaining life of the plan participants. Pretax amounts for net periodic benefit cost and other amounts included in other comprehensive income (loss) for the defined benefit pension plans consisted of the following components: Year Ended December 31, U.S. Plans Non-U.S. Plans 2020 2019 2018 2020 2019 2018 Service cost $ — $ — $ — $ 4.3 $ 4.0 $ 4.1 Interest cost 0.3 0.3 4.2 4.0 5.2 5.2 Recognized actuarial loss 0.1 — 0.4 1.3 0.7 1.3 Expected return on plan assets — — (5.1 ) (7.0 ) (6.8 ) (7.7 ) Settlement loss — — 34.5 1.5 0.9 — Net periodic benefit cost 0.4 0.3 34.0 4.1 4.0 2.9 Changes in plan assets and benefit obligations included in other comprehensive income (loss): Change in unrecognized net actuarial loss (gain) 1.0 0.9 8.7 13.4 9.6 (5.6 ) Change in unrecognized prior service cost — — — (0.2 ) — 0.3 Settlement — — (34.5 ) (1.5 ) (0.9 ) — Total included in other comprehensive income (loss) 1.0 0.9 (25.8 ) 11.7 8.7 (5.3 ) Total recognized in net periodic benefit cost and included in other comprehensive income (loss) $ 1.4 $ 1.2 $ 8.2 $ 15.8 $ 12.7 $ (2.4 ) The Company reports the service cost component of net periodic benefit cost in the same line item as other compensation costs arising from the services rendered by the employee and records the other components of net periodic benefit cost in other expense, net. The Company terminated a significant U.S. defined benefit pension plan in the fourth quarter of 2018 through the purchase of annuities. Upon termination, the Company recognized a pretax charge in other expense, net, of $34.5 million in 2018 primarily related to unrecognized net actuarial losses previously recorded in accumulated other comprehensive loss. Assumptions Significant weighted average assumptions used in determining benefit obligations and net periodic benefit cost are as follows: U.S. Plans Non-U.S. Plans 2020 2019 2018 2020 2019 2018 Benefit obligations: Discount rate 2.07 % 2.95 % 3.70 % 1.02 % 1.65 % 2.50 % Rate of compensation increase — % — % — % 3.59 % 3.74 % 3.92 % Net periodic benefit cost: Discount rate 2.95 % 3.70 % 3.50 % 1.65 % 2.50 % 2.23 % Rate of return on plan assets — % — % — % 2.33 % 3.03 % 3.41 % Rate of compensation increase — % — % — % 3.74 % 3.92 % 3.92 % The Company considered the available yields on high-quality fixed-income investments with maturities corresponding to the Company’s expected benefit obligations to determine the discount rates at each measurement date. Plan Assets In developing the expected rate of return on plan assets, the Company considered the expected long-term rate of return on individual asset classes. Expected return on plan assets is based on the market value of the assets. A portion of the non-U.S. pension assets are managed by independent investment advisors with an objective of transitioning to a portfolio of fixed income and absolute return investments that matches the durations of the obligations as the funded status of each plan improves. The absolute return investment fund is a diversified portfolio designed to achieve long-term total returns. The remainder of the non-U.S. pension assets is invested with the objective of maximizing return. Mutual funds classified as Level 1 are valued at net asset value, which is based on the fair value of the funds’ underlying securities. Certain mutual funds are classified as Level 2 because a portion of the funds’ underlying assets are valued using significant other observable inputs. Other assets are primarily composed of fixed income investments (including insurance and real estate products) and are valued based on the investment’s stated rate of return, which approximates market interest rates. The Company had no U.S. defined benefit pension plan assets as of December 31, 2020 or 2019. The estimated fair values and the valuation input levels of the Company’s non-U.S. defined benefit pension plan assets are as follows: December 31, 2020 Non-U.S. Plans Level 1 Fair Value Level 2 Fair Value Mutual funds: International equity $ 31.7 $ 30.8 International debt 42.2 101.7 Absolute return — 29.3 Other 13.6 29.8 Total $ 87.5 $ 191.6 December 31, 2019 Non-U.S. Plans Level 1 Fair Value Level 2 Fair Value Mutual funds: International equity $ 27.7 $ 16.4 International debt 37.7 97.5 Absolute return — 33.8 Other 8.3 9.4 Total $ 73.7 $ 157.1 Expected Cash Flows The Company expects to contribute $0.8 million to U.S defined benefit pension plans and $6.7 million to non-U.S. defined benefit pension plans during 2021. The following table summarizes projected benefit payments from pension plans through 2030, including benefits attributable to estimated future service (in millions): U.S. Plans Non-U.S. Plans 2021 $ 0.8 $ 9.0 2022 0.8 8.1 2023 0.9 6.4 2024 0.9 10.2 2025 0.9 10.1 2026-2030 4.6 56.6 Other Postretirement Benefit Plans The Company sponsors postretirement health care and life insurance benefit plans that provide benefits to certain former U.S. employees and certain U.S. full-time employees who retire from the Company. The health care plans contain various cost-sharing features such as participant contributions, deductibles, coinsurance and caps, with Medicare as the primary provider of health care benefits for eligible retirees. The Company amended certain of the plans to terminate benefits as of December 31, 2018 and recognized a pre-tax gain of $9.7 million in other expense, net in 2018, primarily related to the reclassification of unrecognized prior service credits and unrecognized net actuarial gains from accumulated other comprehensive loss. The accounting for the remainder of the health care plans anticipates future cost-sharing changes that are consistent with the Company’s expressed intent to maintain a consistent level of cost sharing or capped benefits with retirees. There are no plan assets associated with these post-retirement health care and life insurance benefit plans. The benefit obligation for the remaining plans was $4.5 million and $3.9 million as of December 31, 2020 and 2019, respectively, primarily recorded in other noncurrent liabilities on the Consolidated Balance Sheets. The pretax gains recognized in accumulated other comprehensive loss were $4.5 million and $2.3 million for the years ended December 31, 2020 and 2019, respectively, mostly related to unrecognized actuarial gains. The net periodic benefit income of $1.3 million, $1.0 million and $7.4 million (excluding the gain discussed above related to the termination of certain benefits) for the years ended December 31, 2020, 2019 and 2018, respectively, resulted primarily from the amortization of net actuarial gains and prior service credits.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	13. INCOME TAXES Income (loss) before income taxes includes the results from domestic and international operations as follows: Year Ended December 31, 2020 2019 2018 U.S. companies $ (689.7 ) $ (1,112.7 ) $ 64.0 Non-U.S. companies 35.2 38.7 106.7 Income (loss) before income taxes $ (654.5 ) $ (1,074.0 ) $ 170.7 The components of income tax expense (benefit) were as follows: Year Ended December 31, 2020 2019 2018 Current: Federal $ (0.1 ) $ 33.3 $ 9.6 Foreign 67.3 72.3 64.7 State 6.4 10.7 5.4 Current income tax expense $ 73.6 $ 116.3 $ 79.7 Deferred: Federal $ (131.0 ) $ (198.2 ) $ (26.1 ) Foreign (7.1 ) (30.8 ) (20.5 ) State (16.6 ) (31.8 ) (2.6 ) Deferred income tax benefit (154.7 ) (260.8 ) (49.2 ) Total income tax expense (benefit) $ (81.1 ) $ (144.5 ) $ 30.5 The reconciliation of income taxes calculated at the statutory U.S. federal income tax rate to the Company’s provision for income taxes was as follows: Year Ended December 31, 2020 2019 2018 Provision (benefit) for income taxes at federal statutory rate $ (137.4 ) $ (225.6 ) $ 35.8 State income taxes, net of federal tax effect (21.6 ) (26.2 ) 7.6 Other permanent items 4.2 6.2 8.0 Equity-based compensation 16.1 3.4 (4.6 ) U.S. tax reform 2.2 1.6 (7.8 ) Other changes in tax laws and tax rulings (38.2 ) 2.2 (0.2 ) Goodwill related items 42.8 77.9 — Base erosion and anti-abuse tax — 13.5 — GILTI 0.8 — 6.0 Federal tax credits (23.4 ) (23.1 ) (2.3 ) Change in unrecognized tax benefits (2.6 ) (6.6 ) (22.2 ) Withholding taxes and Subpart F income, net of foreign tax credits 23.6 20.9 4.9 Foreign earnings taxed at other than federal rate 20.9 6.0 1.1 Tax provision adjustments and revisions to prior years' returns 7.1 (3.4 ) (5.5 ) Change in valuation allowances 24.4 8.7 9.7 Total provision (benefit) for income taxes $ (81.1 ) $ (144.5 ) $ 30.5 The components of deferred income tax assets and liabilities and the classification of deferred tax balances on the balance sheet were as follows: December 31, 2020 2019 Deferred tax assets: Accounts receivable, inventory and warranty reserves $ 114.3 $ 130.2 Employee benefits 59.9 55.8 Foreign net operating loss and tax credit carryforwards 512.8 523.4 Federal net operating loss and tax credit carryforwards 159.5 152.0 State net operating loss and tax credit carryforwards 120.0 121.0 Unrecognized tax benefits 42.7 42.1 Interest limitation 9.3 43.3 Capitalized research and development costs 320.2 230.1 Other 68.3 72.2 Total deferred tax assets 1,407.0 1,370.1 Valuation allowance (583.9 ) (596.6 ) Total deferred tax assets, net of valuation allowance 823.1 773.5 Deferred tax liabilities: Intangible assets (690.7 ) (815.7 ) Property, plant and equipment (34.6 ) (43.8 ) Undistributed foreign earnings (14.7 ) (22.6 ) Other (1.2 ) (3.4 ) Total deferred tax liabilities (741.2 ) (885.5 ) Net deferred tax asset (liability) $ 81.9 $ (112.0 ) Deferred taxes recognized on the balance sheet: Noncurrent deferred tax asset (included with other noncurrent assets) 288.1 103.1 Noncurrent deferred tax liability (206.2 ) (215.1 ) Net deferred tax asset (liability) $ 81.9 $ (112.0 ) The deferred tax asset for foreign net operating loss and tax credit carryforwards as of December 31, 2020 includes foreign net operating loss carryforwards (net of federal tax effects) of $499.6 million, which will begin to expire in 2021, and foreign tax credit carryforwards (net of federal tax effects) of $13.2 million, which begin to expire in 2023. Certain of these foreign net operating loss carryforwards are subject to local restrictions limiting their utilization. Valuation allowances of $480.9 million have been established related to these foreign deferred tax assets. The deferred tax asset for federal net operating loss and tax credit carryforwards as of December 31, 2020 relates to $7.5 million of net operating losses carryforwards, which begin to expire in 2028, $105.8 million of research and development credit carryforwards, which begin to expire in 2024 and $46.2 million of U.S. foreign tax credit carryforwards, which begin to expire in 2023. A valuation allowance of $15.2 million has been established against these deferred tax assets. The deferred tax asset for state net operating loss and tax credit carryforwards as of December 31, 2020 includes state net operating loss carryforwards (net of federal tax impact) of $60.2 million, which begin to expire in 2022, and state tax credit carryforwards (net of federal tax impact) of $59.8 million, which begin to expire in 2021. A valuation allowance of $82.0 million has been established against these and other state income tax related deferred tax assets. In addition to the valuation allowances detailed above, the Company has also established a valuation allowance of $5.8 million against other deferred tax assets. Under current U.S. tax regulations, in general, repatriation of foreign earnings to the U.S. can be completed with no incremental U.S. tax. However, repatriation of foreign earnings could subject the Company to U.S. state and non-U.S. jurisdictional taxes (including withholding taxes) on distributions. The following table reflects a reconciliation of the beginning and end of period amounts of gross unrecognized tax benefits, excluding interest and penalties: Year Ended December 31, 2020 2019 2018 Balance at beginning of period $ 191.9 $ 20.1 $ 46.6 Increase related to prior periods 2.5 12.3 4.0 Decrease related to prior periods (4.5 ) (1.2 ) (0.7 ) Increase related to current periods 5.0 8.5 — Decrease related to settlements with taxing authorities (0.9 ) (1.9 ) (3.9 ) Decrease related to lapse in statutes of limitations (2.6 ) (15.0 ) (25.9 ) Increase (decrease) related to the Acquisition (0.9 ) 169.1 — Balance at end of period $ 190.5 $ 191.9 $ 20.1 The Company’s liability for unrecognized tax benefits that, if recognized, would favorably affect the effective tax rate in future periods was $145.7 million as of December 31, 2020. The Company operates in numerous jurisdictions worldwide and is subject to routine tax audits on a regular basis. The determination of the Company’s unrecognized tax benefits involves significant management judgment regarding interpretation of relevant facts and tax laws in each of these jurisdictions. Unrecognized tax benefits are reviewed and evaluated on an ongoing basis and may be adjusted for changing facts and circumstances including the lapse of applicable statutes of limitation and closure of tax examinations. Although the timing and outcome of such events are difficult to predict, the Company estimates that the balance of unrecognized tax benefits, excluding the impact of accrued interest and penalties, may be reduced by up to $8.5 million within the next twelve months. The Company provides for interest and penalties related to unrecognized tax benefits as income tax expense. As of December 31, 2020 and 2019, the Company had accrued $9.2 million and $10.5 million, respectively, for interest and penalties. During the years ended December 31, 2020, 2019 and 2018 the net expense (benefit) for interest and penalties recognized through income tax expense (benefit) was $(1.3) million, $2.1 million and $(3.8) million, respectively. The Company files federal, state and local tax returns with statutes of limitation generally ranging from 3 to 4 years. The Company is generally no longer subject to federal tax examinations for years prior to 2017 or state and local tax examinations for years prior to 2016. Tax returns filed by the Company’s significant foreign subsidiaries are generally subject to statutes of limitations of 3 to 7 years and are generally no longer subject to examination for years prior to 2015. In many jurisdictions, tax authorities retain the ability to review prior years’ tax returns and to adjust any net operating loss or tax credit carryforwards from these years that are available to be utilized in subsequent periods. During 2020, the Company recognized $3.5 million related to the lapse of applicable statutes of limitations and the conclusion of various domestic and foreign examinations. The following table presents income tax expense (benefit) related to amounts presented in the other comprehensive income (loss): Year Ended December 31, 2020 2019 2018 Foreign currency translation $ 1.4 $ (0.9 ) $ (1.9 ) Defined benefit plans (11.1 ) (8.4 ) 4.0 Total $ (9.7 ) $ (9.3 ) $ 2.1

Series A Convertible Preferred

Series A Convertible Preferred Stock	12 Months Ended
Series A Convertible Preferred Stock	Dec. 31, 2020
Equity [Abstract]
Series A Convertible Preferred Stock	14. SERIES A CONVERTIBLE PREFERRED STOCK On April 4, 2019, the Company issued and sold 1,000,000 shares of the Convertible Preferred Stock for $1.0 billion, or $1,000 per share, pursuant to an Investment Agreement between the Company and The Carlyle Group (Carlyle), dated November 8, 2018 (the Investment Agreement). In connection with the issuance of the Convertible Preferred Stock, the Company incurred direct and incremental expenses of $3.0 million, including financial advisory fees, closing costs, legal expenses and other offering-related expenses on behalf of Carlyle, and therefore treated these incremental expenses as a deemed dividend during the year ended December 31, 2019. The Convertible Preferred Stock ranks senior to the shares of the Company’s common stock, with respect to dividend rights and rights on the distribution of assets on any voluntary or involuntary liquidation, dissolution or winding up of the affairs of the Company. The Convertible Preferred Stock has a liquidation preference of $1,000 per share. Holders of the Convertible Preferred Stock are entitled to a cumulative dividend at the rate of 5.5% per year, payable quarterly in arrears. If CommScope does not declare and pay a dividend, the dividend rate will increase by 2.5% to 8.0% per year (and that rate will increase by an additional 0.50% every three months until such unpaid dividend is declared and paid, subject to a cap of 11.0% per year) until all accrued but unpaid dividends have been paid in full. Dividends can be paid in cash, in-kind through the issuance of additional shares of Convertible Preferred Stock or any combination of the two, at the Company’s option. During the year ended December 31, 2020, the Company paid dividends in-kind of $41.8 million, which was recorded as additional Convertible Preferred Stock on the Consolidated Balance Sheets, and cash dividends of $14.3 million. During the year ended December 31, 2019, the Company paid cash dividends of $40.7 million. The Convertible Preferred Stock is convertible at the option of the holders at any time into shares of CommScope common stock at an initial conversion rate of 36.3636 shares of common stock per share of the Convertible Preferred Stock (equivalent to $27.50 per common share). The conversion rate is subject to customary anti-dilution and other adjustments. At any time after the third anniversary of the issuance of the Convertible Preferred Stock, if the volume weighted average price of CommScope’s common stock exceeds the conversion price of $49.50, as may be adjusted pursuant to the Certificate of Designations, for at least thirty trading days in any period of forty-five consecutive trading days (including the final five trading days of any such forty-five-trading day period) all of the Convertible Preferred Stock may be converted at the election of CommScope into the relevant number of shares of CommScope common stock. On any date during the three months following the eight year and six-month anniversary of the Investment Agreement closing date and the three months following each anniversary thereafter, holders of the Convertible Preferred Stock will have the right to require CommScope to redeem all or any portion of the Convertible Preferred Stock at 100% of the liquidation preference thereof plus all accrued and unpaid dividends. The redemption price is payable, at the Company’s option, in cash or a combination of cash and common stock, subject to certain restrictions. Upon certain change of control events involving CommScope, CommScope has the right, subject to the holder’s right to convert prior to such redemption, to redeem all of the Convertible Preferred Stock for the greater of (i) an amount in cash equal to the sum of the liquidation preference of the Convertible Preferred Stock, all accrued but unpaid dividends and, if the applicable redemption date is prior to the fifth anniversary of the first dividend payment date, the present value, discounted at a rate of 10%, of any remaining scheduled dividends through the five year anniversary of the first dividend payment date, assuming CommScope chose to pay such dividends in cash and (ii) the consideration the holders would have received if they had converted their shares of the Convertible Preferred Stock into CommScope common stock immediately prior to the change of control event. To the extent that CommScope does not exercise the redemption right described in the foregoing sentence, following the effective date of any such change of control event, the holders of the Convertible Preferred Stock can require CommScope to repurchase the Convertible Preferred Stock at the greater of (i) an amount in cash equal to 100% of the liquidation preference thereof plus all accrued but unpaid dividends and (ii) the consideration the holders would have received if they had converted their shares of the Convertible Preferred Stock into CommScope common stock immediately prior to the change of control event. Holders of the Convertible Preferred Stock are entitled to vote with the holders of the Company’s common stock on an as-converted basis. Holders of the Convertible Preferred Stock are entitled to a separate class vote with respect to, among other things, amendments to CommScope’s organizational documents that have an adverse effect on the Convertible Preferred Stock, issuances by CommScope of securities that are senior to, or equal in priority with, the Convertible Preferred Stock and issuances of shares of the Convertible Preferred Stock after the closing date of the Acquisition, other than shares issued as dividends with respect to shares of the Convertible Preferred Stock.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 31, 2020
Equity [Abstract]
Stockholders' Equity	15. STOCKHOLDERS’ EQUITY Equity-Based Compensation Plans Effective June 21, 2019, the Company’s stockholders approved the 2019 Long-Term Incentive Plan authorizing 8.0 million shares for issuance, plus additional shares underlying awards outstanding under the predecessor plans, and effective May 8, 2020, the Company’s stockholders approved the Amended and Restated 2019 Long-Term Incentive Plan (the 2019 Plan) authorizing an additional 6.8 million shares for issuance. Awards under the 2019 Plan may include stock options, stock appreciation rights, restricted stock, stock units (including restricted stock units (RSUs) and deferred stock units), performance awards (represents any of the awards already listed with a performance-vesting component), other stock-based awards and cash-based awards. Shares remaining available for grant under the predecessor plans were carried over into the 2019 Plan and all future equity awards will be made from the 2019 Plan. Awards granted prior to June 21, 2019 remain subject to the provisions of the predecessor plans. As of December 31, 2020, there were 4.3 million shares available for future grants under the 2019 Plan. On October 1, 2020, in connection with appointment of the Company’s new President and Chief Executive Officer, the Company granted 0.5 million RSUs and 1.1 million performance share units (PSUs) as inducement awards outside of the 2019 Plan. These inducement awards were approved by the Compensation Committee of the Board of Directors of the Company and did not require stockholder approval in accordance with Nasdaq Listing Rule 5635(c). They are generally subject to the same terms and conditions as awards that are made under the 2019 Plan and are presented in combination with the equity-based compensation awards under the 2019 Plan in the information provided below. As of December 31, 2020, $113.8 million of total unrecognized compensation expense related to unvested stock options, RSUs and PSUs is expected to be recognized over a remaining weighted average period of 1.4 years. There were no significant capitalized equity-based compensation costs at December 31, 2020. The following table shows a summary of the equity-based compensation expense included in the Consolidated Statements of Operations: Year ended December 31, 2020 2019 2018 Selling, general and administrative $ 63.0 $ 55.1 $ 34.2 Cost of sales 18.5 13.5 5.7 Research and development 33.5 22.2 5.0 Total equity-based compensation expense $ 115.0 $ 90.8 $ 44.9 The Company believes the valuation techniques and the approaches utilized to develop the underlying assumptions are appropriate in estimating the fair values of its equity-based compensation. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards. Subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company. Stock Options Stock options are awards that allow the recipient to purchase shares of the Company’s common stock at a fixed price. Stock options are granted at an exercise price equal to the Company’s stock price at the date of grant. These awards generally vest over three to five years following the grant date and have a contractual term of ten years. These awards vest based on a time-based component or a combination of time and performance-based components. The following table summarizes the stock option activity (in millions, except per share data and years): Shares Weighted Average Option Exercise Price Per Share Weighted Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2019 9.6 $ 17.70 Exercised (1.5 ) $ 5.92 Expired (0.2 ) $ 30.31 Forfeited (1.7 ) $ 19.05 Options outstanding at December 31, 2020 6.2 $ 19.86 6.6 $ 5.6 Options vested at December 31, 2020 2.7 $ 21.31 4.5 $ 5.7 Options unvested at December 31, 2020 3.5 $ 18.72 8.2 $ 0.1 The total intrinsic value of options exercised during the years ended December 31, 2020, 2019 and 2018 was $7.1 million, $9.8 million and $12.7 million, respectively. The exercise prices of outstanding options at December 31, 2020 were in the following ranges (in millions, except per share data and years): Options Outstanding Options Exercisable Range of Exercise Prices Shares Weighted Average Remaining Contractual Life in Years Weighted Average Exercise Price Per Share Shares Weighted Average Exercise Price Per Share $5.50 to $18.50 0.9 1.7 $ 7.02 0.8 $ 6.09 $18.51 to $30.00 4.4 8.1 $ 19.06 1.1 $ 20.41 $30.01 to $45.00 0.9 6.1 $ 36.45 0.8 $ 36.31 $5.50 to $45.00 6.2 6.6 $ 19.86 2.7 $ 21.31 The Company uses the Black-Scholes model to estimate the fair value of stock option awards at the date of grant. Key inputs and assumptions used in the model include the exercise price of the award, the expected option term, the risk-free interest rate, stock price volatility and the Company’s projected dividend yield. The expected term represents the period over which the Company’s employees are expected to hold their options. The risk-free interest rate reflects the yield on zero-coupon U.S. treasury securities with a term equal to the option’s expected term. Expected volatility is derived based on the historical volatility of the Company’s stock. The Company’s projected dividend yield is zero. There were no stock option grants during the year ended December 31, 2020. The following table presents the weighted average assumptions used to estimate the fair value of stock option awards granted for the years ended December 31, 2019 and 2018: Year Ended December 31, 2019 2018 Expected option term (in years) 6.5 6.0 Risk-free interest rate 2.2 % 2.7 % Expected volatility 40.0 % 35.0 % Weighted average exercise price $ 18.47 $ 38.34 Weighted average fair value at grant date $ 8.00 $ 14.83 Restricted Stock Units RSUs entitle the holder to shares of common stock after a vesting period that generally ranges from one to three years. The fair value of the awards is determined on the grant date based on the Company’s stock price. The following table summarizes the RSU activity (in millions, except per share data): Restricted Stock Units Weighted Average Grant Date Fair Value Per Share Non-vested share units at December 31, 2019 7.7 $ 22.30 Granted 10.2 $ 10.49 Vested and shares issued (3.3 ) $ 23.09 Forfeited (1.4 ) $ 15.91 Non-vested share units at December 31, 2020 13.2 $ 13.62 The weighted average grant date fair value per unit of these awards granted during the years ended December 31, 2020, 2019 and 2018 was $10.49, $20.29 and $37.87, respectively. The total fair value of RSUs that vested during the years ended December 2020, 2019 and 2018 was $76.0 million, $56.0 million and $42.1 million, respectively. Performance Share Units PSUs are stock awards in which the number of shares ultimately received by the employee depends on Company performance against specified targets. Certain of the Company’s PSU awards are based on an internal performance condition and such awards typically vest over three years, with the number of shares issued varying from 0% to 200% of the number of PSUs granted, depending on performance. The fair value of each PSU is determined on the date of grant based on the Company’s stock price. For PSUs granted in 2018 that had a cumulative three-year revenue performance measure, the performance was below minimum resulting in a negative share performance adjustment that was not material to the non-vested share units as of December 31, 2020. In October 2019, the Company awarded 2.3 million PSUs under a special incentive plan based on the Company’s performance for the second half of 2019. The special awards vested over one year in October 2020. As of December 31, 2020, no PSUs with an internal performance condition remained outstanding. During the year ended December 31, 2020, the Company granted PSU awards with a market condition. Performance for these awards is based on achievement of certain CommScope stock price milestones as well as a service condition. The number of shares that can be issued under these awards varies from 0% to 100% of the number of PSUs granted, depending on performance. The Company uses a Monte Carlo simulation model to estimate the fair value of PSUs with a market condition at the date of grant. Key assumptions used in the model include the risk-free interest rate, which reflects the yield on zero-coupon U.S. treasury securities, and stock price volatility which is derived based on the historical volatility of the Company’s stock. The following table presents the weighted average assumptions used in the valuation and the fair value of PSU awards granted with a market condition: Year Ended December 31, 2020 Risk-free interest rate 0.2 % Expected volatility 51.7 % Weighted average fair value at grant date $ 4.03 The following table summarizes the PSU activity (in millions, except per share data): Performance Share Units Weighted Average Grant Date Fair Value Per Share Non-vested share units at December 31, 2019 2.7 $ 12.47 Granted 1.6 $ 4.63 Vested and shares issued (2.5 ) $ 7.29 Forfeited (0.3 ) $ 12.10 Non-vested share units at December 31, 2020 1.5 $ 4.03 The weighted average grant date fair value per unit of these awards granted during the years ended December 31, 2020, 2019 and 2018 was $4.63, $11.19 and $38.34, respectively. The total fair value of PSUs that vested during the years ended December 31, 2020, 2019 and 2018 was $18.4 million, $2.7 million, and $7.9 million, respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	16. COMMITMENTS AND CONTINGENCIES The following table summarizes the activity in the product warranty accrual, included in accrued and other liabilities and other noncurrent liabilities: Year Ended December 31, 2020 2019 2018 Product warranty accrual, beginning of period $ 61.0 $ 15.6 $ 16.9 Obligation assumed under ARRIS acquisition — 57.4 — Provision for warranty claims 30.9 18.4 6.2 Warranty claims paid (32.4 ) (30.4 ) (7.4 ) Foreign exchange — — (0.1 ) Product warranty accrual, end of period $ 59.5 $ 61.0 $ 15.6 The Company is subject to various federal, state, local and foreign laws and regulations governing the use, discharge, disposal and remediation of hazardous materials. Compliance with current laws and regulations has not had, and is not expected to have, a materially adverse effect on the Company’s financial condition or results of operations. Legal Proceedings The Company is a party to certain intellectual property claims and also periodically receives notices asserting that its products infringe on another party’s patents and other intellectual property rights. These claims and assertions, whether against the Company directly or against its customers, could require the Company to pay damages, royalties, stop offering the relevant products and/or cease other activities. The Company may also be called upon to indemnify certain customers for costs related to products sold to such customers. While the outcome of these claims and notices is uncertain and a reasonable estimate of the loss from unfavorable outcomes in certain of these matters cannot be determined, an adverse outcome could result in a material loss. As of December 31, 2020, the Company had a liability of $27.7 million recorded in accrued and other liabilities on the Consolidated Balance Sheets related to certain intellectual property assertions that have been settled or are in the process of settlement. Of that amount, $21.7 million was assumed in the Acquisition. The Company paid $109.0 million during the year ended December 31, 2020 to settle intellectual property assertions. For the year ended December 31, 2020, the Company recorded a charge to cost of sales in the Consolidated Statements of Operations of $7.8 million related to these intellectual property assertions. These amounts are primarily reflected in the results of the Home and VCN segments. The Company is also a plaintiff or a defendant in certain other pending legal matters in the normal course of business. Management believes none of these other pending legal matters will have a material adverse effect on the Company’s business or financial condition upon final disposition.

Industry Segments, Major Custom

Industry Segments, Major Customers, Related Party Transactions and Geographic Information	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Industry Segments, Major Customers, Related Party Transactions and Geographic Information	17. INDUSTRY SEGMENTS, MAJOR CUSTOMERS, RELATED PARTY TRANSACTIONS AND GEOGRAPHIC INFORMATION Segment Information As of January 1, 2020, the Company reorganized its internal management and reporting structure as part of the integration of the Acquisition. The reorganization changed the information regularly reviewed by the Company’s chief operating decision maker for purposes of allocating resources and assessing performance. As a result, the Company is reporting financial performance based on four reportable segments: Broadband, Home, OWN and VCN. These reportable segments are based upon the nature of the products and services they offer. The Broadband segment provides an end-to-end product portfolio serving the telco and cable provider broadband market. The segment brings together the Network Cable and Connectivity business with the Network and Cloud business and includes converged cable access platform, passive optical networking, video systems, access technologies, fiber and coaxial cable, fiber and copper connectivity and hardened closures. The Home segment comprises the former Consumer Premises Equipment business and the segment includes subscriber-based solutions that support broadband and video applications. The broadband offerings in the Home segment include devices that provide residential connectivity to a service provider’s network, such as digital subscriber line and cable modems and telephony and data gateways which incorporate routing and Wi-Fi functionality. Video offerings include set top boxes that support cable, satellite and Internet Protocol television content delivery and include products such as digital video recorders, high definition set top boxes and hybrid set top devices. The OWN segment focuses on the macro and metro cell markets. The segment includes base station antennas, RF filters, tower connectivity, microwave antennas, metro cell products, cabinets, steel , accessories, Spectrum Access System and Comsearch. As the Company’s wireless operator customers shift a portion of their 5G capital expenditures from the macro tower to the metro cell, the portfolio will strategically help to make the transition smooth and cost-effective. The VCN segment targets both public and private networks for campuses, venues, data centers and buildings. The segment combines Wi-Fi and switching, distributed antenna systems, licensed and unlicensed small cells and enterprise fiber and copper infrastructure. The following table provides summary financial information by reportable segment: December 31, 2020 2019 Identifiable segment-related assets: Broadband $ 6,451.6 $ 6,681.1 Home 1,698.5 2,178.7 OWN 1,264.4 1,394.1 VCN 3,352.3 3,476.4 Total identifiable segment-related assets 12,766.8 13,730.3 Reconciliation to total assets: Cash and cash equivalents 521.9 598.2 Deferred income tax assets 288.1 103.1 Total assets $ 13,576.8 $ 14,431.6 The Company’s measurement of segment performance is adjusted EBITDA (earnings before interest, income taxes, depreciation and amortization). The Company defines adjusted EBITDA as operating income, adjusted to exclude depreciation, amortization of intangible assets, restructuring costs, asset impairments, equity-based compensation, transaction and integration costs and other items that the Company believes are useful to exclude in the evaluation of operating performance from period to period because these items are not representative of the Company’s core business. The following table provides net sales, adjusted EBITDA, depreciation expense and additions to property, plant and equipment by reportable segment: Year Ended December 31, 2020 2019 2018 Net sales: Broadband $ 2,895.7 $ 2,363.8 $ 1,448.8 Home 2,360.0 2,539.0 — OWN 1,243.7 1,475.0 1,490.5 VCN 1,936.5 1,967.3 1,629.2 Consolidated net sales $ 8,435.9 $ 8,345.1 $ 4,568.5 Segment adjusted EBITDA: Broadband $ 640.5 $ 473.3 $ 309.4 Home 116.2 193.7 — OWN 278.5 361.2 323.6 VCN 180.0 269.3 280.6 Total segment adjusted EBITDA 1,215.2 1,297.5 913.6 Amortization of intangible assets (630.5 ) (593.2 ) (264.6 ) Restructuring costs, net (88.4 ) (87.7 ) (44.0 ) Equity-based compensation (115.0 ) (90.8 ) (44.9 ) Asset impairments (206.7 ) (376.1 ) (15.0 ) Transaction and integration costs (24.9 ) (195.3 ) (19.5 ) Acquisition accounting adjustments (20.6 ) (264.2 ) — Patent claims and litigation settlements (16.3 ) (55.0 ) — Executive severance (6.3 ) — — Depreciation (158.3 ) (143.7 ) (75.6 ) Consolidated operating income (loss) $ (51.8 ) $ (508.5 ) $ 450.0 Depreciation expense: Broadband $ 59.2 $ 55.6 $ 29.3 Home 34.3 30.2 — OWN 17.0 17.5 17.4 VCN 47.8 40.4 28.9 Consolidated depreciation expense $ 158.3 $ 143.7 $ 75.6 Additions to property, plant and equipment: Broadband $ 55.2 $ 42.5 $ 49.0 Home 19.0 6.5 — OWN 15.9 16.7 19.7 VCN 31.1 38.4 13.6 Consolidated additions to property, plant and equipment $ 121.2 $ 104.1 $ 82.3 Customer Information Net sales to Comcast Corporation and affiliates (Comcast) accounted for 11% of the Company’s net sales during both of the years ended December 31, 2020 and 2019. Net sales to Comcast are derived from the Broadband, Home and VCN segments. Other than Comcast, no direct customer accounted for 10% or more of the Company’s total net sales during the years ended December 31, 2020 or 2019. Net sales to Anixter International Inc. and its affiliates (Anixter) accounted for 11% of the Company’s total net sales during the year ended December 31, 2018. Net sales to Anixter primarily originate in the VCN segment. Other than Anixter, no direct customer accounted for 10% or more of the Company’s total net sales for the year ended December 31, 2018. No direct customers accounted for 10% or more of the Company’s accounts receivable as of December 31, 2020 or 2019. Related Party Transactions See Note 14 for a discussion of the Convertible Preferred Stock issued to Carlyle to finance the Acquisition. Other than transactions related to the Convertible Preferred Stock, there were no material related party transactions for the years ended December 31, 2020, 2019 or 2018. Geographic Information Sales to customers located outside of the U.S. comprised 39%, 41% and 44% of total net sales during the years ended December 31, 2020, 2019 and 2018, respectively. Sales by geographic region, based on the destination of product shipments or service provided, were as follows: Year Ended December 31, 2020 2019 2018 United States $ 5,185.3 $ 4,923.3 $ 2,539.2 Europe, Middle East and Africa (EMEA) 1,530.2 1,543.6 963.0 Asia Pacific (APAC) 797.2 919.7 735.6 Caribbean and Latin America (CALA) 610.3 650.7 242.9 Canada 312.9 307.8 87.8 Consolidated net sales $ 8,435.9 $ 8,345.1 $ 4,568.5 Long-lived assets, excluding intangible assets, consist substantially of property, plant and equipment and right of use assets. The Company’s long-lived assets, excluding intangible assets, located in the U.S., EMEA, APAC and CALA regions represented the following percentages of such long-lived assets: 62%, 15%, 17% and 6%, respectively, as of both December 31, 2020 and 2019.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2020
Accounting Policies [Abstract]
Basis of Consolidation	Basis of Consolidation The accompanying consolidated financial statements include CommScope Holding Company, Inc., along with its direct and indirect subsidiaries. All intercompany accounts and transactions are eliminated in consolidation. Certain prior year amounts have been reclassified to conform to the current year presentation.
Use of Estimates in the Preparation of the Financial Statements	Use of Estimates in the Preparation of the Financial Statements The preparation of the accompanying consolidated financial statements in conformity with accounting principles generally accepted in the United States (U.S.) requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. These estimates and their underlying assumptions form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other objective sources. The Company bases its estimates on historical experience and on assumptions that are believed to be reasonable under the circumstances and revises its estimates, as appropriate, when events or changes in circumstances indicate that revisions may be necessary. Significant accounting estimates reflected in the Company’s financial statements include the allowance for doubtful accounts; reserves for sales returns, discounts, allowances, rebates and distributor price protection programs; inventory excess and obsolescence reserves; product warranty reserves and other contingent liabilities; tax valuation allowances; liabilities for unrecognized tax benefits; purchase price allocations; impairment reviews for investments, property, plant and equipment, goodwill and other intangible assets; and pension and other postretirement benefit costs and liabilities. Although these estimates are based on management’s knowledge of and experience with past and current events and on management’s assumptions about future events, it is at least reasonably possible that they may ultimately differ materially from actual results.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents represent deposits in banks and cash invested temporarily in various instruments with a maturity of three months or less at the time of purchase.
Accounts Receivable and Allowance for Doubtful Accounts	Accounts Receivable and Allowance for Doubtful Accounts Trade accounts receivable and contract assets for unbilled receivables are stated at the amount owed by the customer, net of allowances for estimated doubtful accounts, discounts, returns and rebates. The Company measures the allowance for doubtful accounts using an expected credit loss model, which uses a lifetime expected loss allowance for all trade accounts receivable and contract assets. To measure the expected credit losses, trade accounts receivable and contract assets are grouped based on shared credit risk characteristics and the days past due. Contract assets relate to unbilled work in progress and have substantially the same risk characteristics as trade accounts receivable for the same types of contracts. Therefore, the Company has concluded that the expected loss rates for trade accounts receivables are a reasonable approximation of the loss rates for the contract assets. In calculating an allowance for doubtful accounts, the Company uses its historical experience, external indicators and forward-looking information to calculate expected credit losses using an aging method. The Company assesses impairment of trade accounts receivable on a collective basis as they possess shared credit risk characteristics which have been grouped based on the days past due. The expected loss rates are based on the payment profiles of sales over the preceding thirty-six months and the corresponding historical credit losses experienced within this period. The historical loss rates are adjusted to reflect current and forward-looking information on macroeconomic factors affecting the ability of the customers to settle their trade accounts receivable.
Inventories	Inventories Inventories are stated at the lower of cost or net realizable value. Inventory cost is determined on a first-in, first-out (FIFO) basis. Costs such as idle facility expense, excessive scrap and re-handling costs are expensed as incurred. The Company maintains reserves to reduce the value of inventory to the lower of cost or net realizable value, including reserves for excess and obsolete inventory.
Long-Lived Assets	Long-Lived Assets Property, Plant and Equipment Property, plant and equipment are stated at cost. Upon application of acquisition accounting, property, plant and equipment are measured at estimated fair value as of the acquisition date to establish a new historical cost basis. Provisions for depreciation are based on estimated useful lives of the assets using the straight-line method. Useful lives generally range from 10 to 35 years 3 to 10 years Goodwill and Other Intangible Assets Goodwill is assigned to reporting units based on the difference between the purchase price as allocated to the reporting units and the estimated fair value of the identified net assets acquired as allocated to the reporting units. Purchased intangible assets with finite lives are carried at their estimated fair values at the time of acquisition less accumulated amortization and any impairment charges. Amortization is recognized on a straight-line basis over the estimated useful lives of the respective assets. Asset Impairments Goodwill is tested for impairment annually or at other times if events have occurred or circumstances exist that indicate the carrying value of the reporting unit may exceed its fair value. Property, plant and equipment and intangible assets with finite lives are reviewed for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable, based on the undiscounted cash flows expected to be derived from the use and ultimate disposition of the assets. Assets identified as impaired are carried at estimated fair value. Equity investments without readily determinable fair values are evaluated each reporting period for impairment based on a qualitative assessment and are then measured at fair value if an impairment is determined to exist. See Notes 4 and 10 for discussion of asset impairment charges.
Income Taxes	Income Taxes Deferred income taxes reflect the future tax consequences of differences between the financial reporting and tax basis of assets and liabilities. The Company records a valuation allowance, when appropriate, to reduce deferred tax assets to an amount that is more likely than not to be realized. Tax benefits that result from uncertain tax positions may be recognized only if they are considered more likely than not to be sustainable, based on their technical merits. The amount of benefit to be recognized is the largest amount of tax benefit that is at least 50% likely to be realized. In addition, the Company does not provide for U.S. taxes related to the foreign currency remeasurement gains and losses on its long-term intercompany loans with foreign subsidiaries. These loans are not expected to be repaid in the foreseeable future, and the foreign currency gains and losses are therefore recorded to accumulated other comprehensive loss. The Company records the income tax effects related to the activity of its defined benefit plans and hedging instruments in accumulated other comprehensive loss at the currently enacted tax rate and reclassifies it to net income in the same period that the related pre-tax accumulated comprehensive income reclassifications are recognized.
Revenue Recognition	Revenue Recognition The Company recognizes revenue based on the satisfaction of distinct obligations to transfer goods and services to customers. The Company’s revenue is generated primarily from product or equipment sales. The Company also generates revenue from custom design and installation services as well as bundled sales arrangements that include product, software and services. Revenue is recognized when performance obligations in a contract are satisfied through the transfer of control of the good or service at the amount of consideration expected to be received. The following are required before revenue is recognized: • Identify the contract with the customer. A variety of arrangements are considered contracts; however, contracts typically take the form of a master purchase agreement or customer purchase orders. • Identify the performance obligations in the contract. Performance obligations are identified as promised goods or services that are distinct within an arrangement. • Determine the transaction price. The transaction price is the amount of consideration the Company expects to receive in exchange for transferring the promised goods or services. The consideration may include fixed or variable amounts or both. • Allocate the transaction price to the performance obligations. The transaction price is allocated to the performance obligations on a relative standalone selling price basis. • Recognize revenue as the performance obligations are satisfied. Revenue is recognized when transfer of control of the promised goods or services has occurred. This is either at a point in time or over time. Product sales represent over 90% of the Company’s revenue. For these sales, revenue is recognized when control of the product has transferred to the customer, which is generally at the point in time when products have been shipped, right to payment has been obtained and risk of loss has been transferred. Certain of the Company’s product performance obligations include proprietary operating system software, which typically is not considered separately identifiable. Therefore, sales of these products and the related software are considered one performance obligation. License contracts include revenue recognized for the licensing of intellectual property, including software, sold separately without products. Functional intellectual property licenses do not meet the criteria for revenue to be recognized over time and revenue is most commonly recognized upon delivery of the license/software to the customer. Certain customer transactions may be project based and include multiple performance obligations based on the bundling of equipment, software and services. When a multiple performance obligation arrangement exists, the transaction price is allocated to the performance obligations based on their relative standalone selling price, and revenue is recognized upon transfer of control of each deliverable. To determine the standalone selling price, the Company first looks to establish the standalone selling price through an observable price when the good or service is sold separately in similar circumstances. If the standalone selling price cannot be established through an observable price, the Company will make an estimate based on market conditions, customer specific factors and customer class. The Company may use a combination of approaches to estimate the standalone selling price. For performance obligations recognized over time, judgment is required to evaluate assumptions, including the total estimated costs to determine progress towards completion of the performance obligation and to calculate the corresponding amount of revenue to recognize. If estimated total costs on any contract are greater than the net contract revenues, the entire estimated costs are recorded in the period in which the revisions to estimates are identified and the amounts can be reasonably estimated. Other customer contract types include a variety of post-contract support services offerings, including: • Maintenance and support services provided under annual service-level agreements with the Company’s customers. These services represent stand-ready obligations that are recognized over time (on a straight-line basis over the contract period) because the customer simultaneously receives and consumes the benefits of the services as the services are performed. • Professional services and other similar services consist primarily of “Day 2” services to help customers maximize their utilization of deployed systems. The services are recognized over time because the customer simultaneously receives and consumes the benefits of the service as the services are performed. • Installation services relate to the routine installation of equipment ordered by the customer at the customer’s site and are distinct performance obligations from delivery of the related hardware. The associated revenues are recognized over time as the services are provided. Revenue is measured based on the consideration the Company expects to be entitled based on customer contracts. For sales to distributors, system integrators and value-added resellers, revenue is adjusted for variable consideration amounts, including but not limited to estimated discounts, returns, rebates and distributor price protection programs. These estimates are determined based upon historical experience, contract terms, inventory levels in the distributor channel and other related factors. Adjustments to variable consideration estimates are recorded when circumstances indicate revisions may be necessary. A contract liability for deferred revenue is recorded when consideration is received or is unconditionally due from a customer prior to transferring control of goods or services to the customer under the terms of a contract. Deferred revenue balances typically result from advance payments received from customers for product contracts or from billings in excess of revenue recognized on project or services arrangements. Unbilled receivables are recorded when revenues are recognized in advance of invoice issuance. A contract asset is any portion of unbilled receivables for which the right to consideration is conditional on a factor other than the passage of time, which is common for certain project contract performance obligations. These assets are presented on a combined basis with accounts receivable and are converted to accounts receivable once the Company’s right to the consideration becomes unconditional, which varies by contract but is generally based on achieving certain acceptance milestones. The Company recognizes the incremental costs of obtaining a contract as an expense when incurred if the amortization period of the asset would be one year or less. The Company includes shipping and handling costs billed to customers in net sales and includes the costs incurred to transport product to customers as well as certain internal handling costs, which relate to activities to prepare goods for shipment, as cost of sales. Shipping and handling costs incurred after control is transferred to the customer are accounted for as fulfillment costs and are not accounted for as separate revenue obligations.
Leases	Leases The Company determines if a contract is a lease or contains a lease at inception. Right of use assets related to operating type leases are reported in other noncurrent assets and the present value of remaining lease obligations is reported in accrued and other liabilities and other noncurrent liabilities on the Consolidated Balance Sheets. For the periods presented, CommScope does not have any financing type leases. Operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The majority of the Company’s leases do not provide an implicit rate; therefore, the Company uses the incremental borrowing rates applicable to the economic environment and the duration of the lease, based on the information available at commencement date, in determining the present value of future payments. The right of use asset for operating leases is measured using the lease liability adjusted for the impact of lease payments made prior to commencement, lease incentives received, initial direct costs incurred and any asset impairments. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. The Company remeasures and reallocates the consideration in a lease when there is a modification of the lease that is not accounted for as a separate contract. The lease liability is remeasured when there is a change in the lease term or a change in the assessment of whether the Company will exercise a lease option. The Company assesses right of use assets for impairment in accordance with its long-lived asset impairment policy. The Company accounts for lease agreements with contractually required lease and non-lease components on a combined basis. Lease payments made for cancellable leases, variable amounts that are not based on an observable index and lease agreements with an original duration of less than twelve months are recorded directly to lease expense.
Taxes Collected from Customers	Tax Collected from Customers Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, which are collected by the Company from customers, are excluded from net sales.
Product Warranties	Product Warranties The Company recognizes a liability for the estimated claims that may be paid under its customer assurance-type warranty agreements to remedy potential deficiencies of quality or performance of the Company’s products. These product warranties extend over various periods, depending on the product subject to the warranty and the terms of the individual agreements. The Company records a provision for estimated future warranty claims as cost of sales based upon the historical relationship of warranty claims to sales and specifically identified warranty issues. The Company bases its estimates on assumptions that are believed to be reasonable under the circumstances and revises its estimates, as appropriate, when events or changes in circumstances indicate that revisions may be necessary. Such revisions may be material.
Advertising Costs	Advertising Costs Advertising costs are expensed in the period in which they are incurred. Advertising expense was $45.9 million, $39.5 million and $17.3 million for the years ended December 31, 2020, 2019 and 2018, respectively.
Research and Development	Research and Development Research and development (R&D) costs are expensed in the period in which they are incurred. R&D costs include materials and equipment that have no alternative future use, depreciation on equipment and facilities currently used for R&D purposes, personnel costs, contract services and reasonable allocations of indirect costs, if clearly related to an R&D activity. Expenditures in the pre-production phase of an R&D project are recorded as R&D expense. However, costs incurred in the pre-production phase that are associated with output actually used in production are recorded in cost of sales. A project is considered finished with pre-production efforts when management determines that it has achieved acceptable levels of scrap and yield, which vary by project. Expenditures related to ongoing production are recorded in cost of sales.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities CommScope is exposed to risks resulting from adverse fluctuations in commodity prices, interest rates and foreign currency exchange rates. CommScope’s risk management strategy includes the use of derivative financial instruments whenever management determines their use to be reasonable and practical. This strategy does not permit the use of derivative financial instruments for trading or speculation. The Company uses forward contracts to hedge a portion of its balance sheet foreign exchange re-measurement risk and to hedge certain planned foreign currency expenditures. Unrealized gains and losses resulting from these contracts are recognized in other expense, net and partially offset corresponding foreign exchange gains and losses on the balances and expenditures being hedged. These instruments are not designated as hedges for hedge accounting purposes and are marked to market each period through earnings. The Company has a hedging strategy to designate certain foreign currency contracts as net investment hedges to mitigate a portion of the foreign currency risk on the euro net investment in a foreign subsidiary. Hedge effectiveness is assessed each quarter based on the net investment in the foreign subsidiary designated as the hedged item and the changes in the fair value of designated foreign currency contracts based on spot rates. For hedges that meet the effectiveness requirements, changes in fair value are recorded as a component of other comprehensive income (loss), net of tax. Amounts excluded from hedge effectiveness at inception under the spot method for designated forward contracts are recognized on a straight-line basis over the life of each contract and for designated cross-currency swap contracts are recognized as interest accrues. The Company also has a hedging strategy to mitigate a portion of the exposure to changes in cash flows resulting from variable interest rates on the senior secured term loan due 2026 which are based on the one-month LIBOR benchmark rate (see Note 8). Hedge effectiveness is assessed each quarter, and for hedges that meet the effectiveness requirements, changes in fair value are recorded as a component of other comprehensive income (loss), net of tax, and are reclassified to interest expense as interest payments are made on the Company’s variable rate debt. The Company has elected and documented the use of the normal purchases and sales exception for normal purchase and sales contracts that meet the definition of a derivative financial instrument. See Note 9 for further disclosure related to the derivative instruments and hedging activities.
Foreign Currency Translation	Foreign Currency Translation For the years ended December 31, 2020, 2019 and 2018, approximately 39%, 41% and 44%, respectively, of the Company’s net sales were to customers located outside the U.S. A portion of these sales were denominated in currencies other than the U.S. dollar, particularly sales from the Company’s foreign subsidiaries. The financial position and results of operations of certain of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Revenues and expenses of these subsidiaries have been translated into U.S. dollars at average exchange rates prevailing during the period. Assets and liabilities of these subsidiaries have been translated at the exchange rates as of the balance sheet date. Translation gains and losses are recorded in accumulated other comprehensive loss. Upon sale or liquidation of an investment in a foreign subsidiary, the amount of net translation gains or losses that have been accumulated in other comprehensive loss attributable to that investment are reported as a gain or loss in earnings in the period in which the sale or liquidation occurs. Aggregate foreign currency gains and losses, such as those resulting from the settlement of receivables or payables, foreign currency contracts and short-term intercompany advances in a currency other than the subsidiary’s functional currency, are recorded currently in earnings (included in other expense, net) and resulted in losses of $19.2 million, $11.9 million and $15.9 million during the years ended December 31, 2020, 2019 and 2018, respectively. Foreign currency remeasurement gains and losses related to certain long-term intercompany loans that are not expected to be settled in the foreseeable future and the effective portion of foreign currency contracts designated as net investment hedges are recorded in accumulated other comprehensive loss. See Note 9 for disclosure of foreign currency gains and losses specifically related to foreign currency contracts.
Equity-Based Compensation	Equity-Based Compensation The estimated fair value of stock awards is recognized as expense over the requisite service periods. Forfeitures of stock awards are recognized as they occur. The Company records deferred tax assets related to compensation expense for awards that are expected to result in future tax deductions for the Company, based on the amount of compensation cost recognized and the Company’s statutory tax rate in the jurisdiction in which it expects to receive a deduction. Differences between the deferred tax assets recognized for financial reporting purposes and actual tax deductions reported on the Company’s income tax return are recorded in the Consolidated Statements of Operations within income tax expense.
Earnings (Loss) Per Share	Earnings (Loss) Per Share Basic earnings (loss) per share (EPS) is computed by dividing net income (loss), less any dividends and deemed dividends related to the Series A convertible preferred stock (the Convertible Preferred Stock), by the weighted average number of common shares outstanding during the period. The numerator in diluted EPS is based on the basic EPS numerator adjusted to add back any dividends and deemed dividends related to the Convertible Preferred Stock, subject to antidilution requirements. The denominator used in diluted EPS is based on the basic EPS computation plus the effect of potentially dilutive common shares related to the Convertible Preferred Stock and equity-based compensation plans, subject to antidilution requirements. For the years ended December 31, 2020, 2019 and 2018, 17.4 million, 11.2 million and 2.1 million shares, respectively, of outstanding equity-based compensation awards were not included in the computation of diluted EPS because the effect was either antidilutive or the performance conditions were not met. Of those amounts, for the years ended December 31, 2020 and 2019, 4.4 million and 2.4 million shares, respectively, would have been considered dilutive if the Company had not been in a net loss position. For the year s ended December 31, 20 20 and 2019 , 37.1 million and million , respectively, of as-if converted shares related to the Convertible Preferred Stock were excluded from the diluted share count because they were anti-dilutive ; however, they would have been considered dilutive if the Company had not been in a net loss position . Year ended December 31, 2020 2019 2018 Numerator: Net income (loss) $ (573.4 ) $ (929.5 ) $ 140.2 Dividends on Series A convertible preferred stock (56.1 ) (40.7 ) — Deemed dividends on Series A convertible preferred stock — (3.0 ) — Net income (loss) attributable to common stockholders $ (629.5 ) $ (973.2 ) $ 140.2 Denominator: Weighted average common shares outstanding - basic 196.8 193.7 192.0 Dilutive effect of as-if converted Series A convertible preferred stock — — — Dilutive effect of equity-based awards — — 3.3 Weighted average common shares outstanding - diluted 196.8 193.7 195.3 Earnings (loss) per share: Basic $ (3.20 ) $ (5.02 ) $ 0.73 Diluted $ (3.20 ) $ (5.02 ) $ 0.72
Business Combinations	Business Combinations The Company uses the acquisition method of accounting for business combinations which requires the tangible and intangible assets acquired and liabilities assumed to be recorded at their respective fair market value as of the acquisition date. Goodwill represents the excess of the consideration transferred over the fair value of the net assets acquired. The fair values of the assets acquired and liabilities assumed are determined based upon the Company’s valuation and involves making significant estimates and assumptions based on facts and circumstances that existed as of the acquisition date. The Company uses a measurement period following the acquisition date to gather information that existed as of the acquisition date that is needed to determine the fair value of the assets acquired and liabilities assumed. The measurement period ends once all information is obtained, but no later than one year from the acquisition date.
Concentrations of Risk	Concentrations of Risk Non-derivative financial instruments used by the Company in the normal course of business include letters of credit and commitments to extend credit, primarily accounts receivable. The Company generally does not require collateral on its accounts receivable. These financial instruments involve risk, including the credit risk of nonperformance by the counterparties to those instruments, and the actual loss may exceed the reserves provided in the Company’s Consolidated Balance Sheets. See Note 17 for further discussion of customer-related concentrations of risk. The Company manages its exposures to credit risk associated with accounts receivable using such tools as credit approvals, credit limits and monitoring procedures. CommScope estimates the allowance for doubtful accounts based on the actual payment history and individual circumstances of significant customers as well as the age of receivables. In management’s opinion, as of December 31, 2020, the Company did not have significant unreserved risk of credit loss due to the non-performance of customers or other counterparties related to amounts receivable. However, an adverse change in financial condition of a significant customer or group of customers or in the telecommunications industry could materially affect the Company’s estimates related to doubtful accounts. The principal raw materials purchased by CommScope ( aluminum, bimetals, copper, optical fiber, plastics and other polymers and steel ) are subject to changes in market price as these materials are linked to various commodity markets. The Company attempts to mitigate these risks through effective requirements planning and by working closely with its key suppliers to obtain the best possible pricing and delivery terms. The Company relies on sole suppliers or a limited group of suppliers for certain key components (memory and chip capacitors), subassemblies and modules and a limited group of contract manufacturers to manufacture a significant portion of its products. Any disruption or termination of these arrangements could have a material adverse impact on the Company’s results of operations.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Adopted in 2020 On January 1, 2020, the Company adopted ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments and subsequent amendments to the initial guidance: ASU No. 2018-19, ASU No. 2019-04, ASU No. 2019-05 and ASU No. 2020-02 (collectively, Topic 326) the incurred loss methodology with the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including trade accounts receivable. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842. The Company adopted Topic 326 using the modified retrospective method for all financial assets measured at amortized cost, which are primarily trade accounts receivable and contract assets for the Company. Results for reporting periods beginning after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable U.S. GAAP. The impact of adopting Topic 326 as of January 1, 2020 was not material to the consolidated financial statements. Issued but Not Adopted In August 2020, the (FASB) issued ASU No. 2020-06, Debt — Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity . The new guidance simplifies the accounting for convertible instruments by reducing the number of accounting models available for convertible debt instruments and convertible preferred stock and amends the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions and requires the application of the if-converted method for calculating diluted earnings per share, along with expanded disclosures. ASU No. 2020-06 is effective for the Company as of January 1, 2022 and early adoption is permitted beginning January 1, 2021. The Company is currently evaluating the impact of the new guidance on the consolidated financial statements. In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The new guidance provides optional expedients and exceptions for applying generally accepted accounting principles to transactions affected by reference rate reform if certain criteria are met. These transactions include contract modifications, hedging relationships, and sale or transfer of debt securities classified as held-to-maturity. The Company can elect to apply the amendments as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the impact of this guidance on the consolidated financial statements. In January 2020, the FASB issued ASU No. 2020-01 , Investments – Equity Securities (Topic 321), Investments – Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815). The new guidance is based on a consensus of the Emerging Issues Task Force and is expected to increase comparability in accounting for these transactions. The amendments in this guidance clarify the interaction of accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. ASU No. 2020-01 is effective for the Company as of January 1, 2021. The Company anticipates that the adoption of this new guidance will not have a material impact on the consolidated financial statements. In December 2019 the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes .

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
Summary of Significant Accounting Policies (Tables)	Dec. 31, 2020
Accounting Policies [Abstract]
Summary of Earnings, Weighted Average Common Shares and Potential Common Shares Outstanding	Year ended December 31, 2020 2019 2018 Numerator: Net income (loss) $ (573.4 ) $ (929.5 ) $ 140.2 Dividends on Series A convertible preferred stock (56.1 ) (40.7 ) — Deemed dividends on Series A convertible preferred stock — (3.0 ) — Net income (loss) attributable to common stockholders $ (629.5 ) $ (973.2 ) $ 140.2 Denominator: Weighted average common shares outstanding - basic 196.8 193.7 192.0 Dilutive effect of as-if converted Series A convertible preferred stock — — — Dilutive effect of equity-based awards — — 3.3 Weighted average common shares outstanding - diluted 196.8 193.7 195.3 Earnings (loss) per share: Basic $ (3.20 ) $ (5.02 ) $ 0.73 Diluted $ (3.20 ) $ (5.02 ) $ 0.72

Acquisition (Tables)

Acquisition (Tables)	12 Months Ended
Acquisition (Tables)	Dec. 31, 2020
ARRIS [Member]
Summary of Estimated Fair Value of Identifiable Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date: Estimated Fair Value Assets Cash and cash equivalents $ 556.1 Accounts receivable 1,155.0 Inventory 995.5 Other current assets 132.0 Property, plant and equipment 316.6 Goodwill 2,981.4 Identifiable intangible assets 3,509.6 Other noncurrent assets 447.7 Less: Liabilities assumed Current liabilities (1,534.8 ) Debt (2,052.0 ) Other noncurrent liabilities (889.3 ) Net acquisition cost $ 5,617.8

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
Goodwill and Other Intangible Assets (Tables)	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Details of Intangible Assets Other Than Goodwill	The following table presents details of the Company’s intangible assets other than goodwill as of December 31, 2020 and 2019: 2020 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer base $ 3,524.1 $ 1,563.2 $ 1,960.9 $ 3,503.3 $ 1,318.8 $ 2,184.5 Trade names and trademarks 1,024.3 376.6 647.7 1,021.9 308.3 713.6 Patents and technologies 2,039.7 997.9 1,041.8 2,021.6 656.1 1,365.5 Other 58.3 58.3 — 58.3 58.3 — Total intangible assets $ 6,646.4 $ 2,996.0 $ 3,650.4 $ 6,605.1 $ 2,341.5 $ 4,263.6
Estimated Amortization Expense for Next Five Years	Future amortization expense as of December 31, 2020 is as follows: Estimated Amortization Expense 2021 $ 614.4 2022 547.4 2023 433.4 2024 346.1 2025 280.8 Thereafter 1,428.3
Goodwill by Reportable Segment	The following table presents goodwill by reportable segment. Foreign currency fluctuations are included within other adjustments. Additions (deductions) reflect the preliminary allocation and subsequent measurement period adjustments of the Company’s acquisition of ARRIS, which was completed in 2020. December 31, 2019 December 31, 2020 Goodwill Accumulated Impairment Losses Total Additions (Deductions) Impairment Other Goodwill Accumulated Impairment Losses Total Broadband $ 3,355.1 $ (193.6 ) $ 3,161.5 $ (7.1 ) $ — $ 21.7 $ 3,369.7 $ (193.6 ) $ 3,176.1 Home 402.1 (192.8 ) 209.3 (1.3 ) (206.7 ) (1.3 ) 399.5 (399.5 ) — OWN 666.0 (159.5 ) 506.5 — — 3.1 669.1 (159.5 ) 509.6 VCN 1,635.6 (41.2 ) 1,594.4 (1.4 ) — 7.8 1,642.0 (41.2 ) 1,600.8 Total $ 6,058.8 $ (587.1 ) $ 5,471.7 $ (9.8 ) $ (206.7 ) $ 31.3 $ 6,080.3 $ (793.8 ) $ 5,286.5 December 31, 2018 December 31, 2019 Goodwill Accumulated Impairment Losses Total Additions (Deductions) Impairment Other Goodwill Accumulated Impairment Losses Total Broadband $ 1,180.6 $ (51.5 ) $ 1,129.1 $ 2,171.2 $ (142.1 ) $ 3.3 $ 3,355.1 $ (193.6 ) $ 3,161.5 Home — — — 403.0 (192.8 ) (0.9 ) 402.1 (192.8 ) 209.3 OWN 666.4 (159.5 ) 506.9 — — (0.4 ) 666.0 (159.5 ) 506.5 VCN 1,216.3 — 1,216.3 417.0 (41.2 ) 2.3 1,635.6 (41.2 ) 1,594.4 Total $ 3,063.3 $ (211.0 ) $ 2,852.3 $ 2,991.2 $ (376.1 ) $ 4.3 $ 6,058.8 $ (587.1 ) $ 5,471.7

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	12 Months Ended
Revenue From Contracts With Customers (Tables)	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Schedule of Net Sales by Reportable Segment Disaggregated Based on Contract Type	The following table presents net sales by reportable segment, disaggregated based on contract type: Year Ended December 31, Broadband Home OWN VCN Total 2020 2019 2020 2019 2020 2019 2020 2019 2020 2019 Contract type: Product contracts $ 2,579.8 $ 2,072.3 $ 2,351.7 $ 2,529.4 $ 1,220.0 $ 1,452.5 $ 1,743.1 $ 1,861.8 $ 7,894.6 $ 7,916.0 Other contracts 315.9 291.5 8.3 9.6 23.7 22.5 193.4 105.5 541.3 429.1 Consolidated net sales $ 2,895.7 $ 2,363.8 $ 2,360.0 $ 2,539.0 $ 1,243.7 $ 1,475.0 $ 1,936.5 $ 1,967.3 $ 8,435.9 $ 8,345.1
Allowance for Doubtful Accounts	Year Ended December 31, 2020 2019 2018 Allowance for doubtful accounts, beginning of period $ 35.4 $ 17.4 $ 14.0 Charged to costs and expenses 5.0 10.6 6.0 Write-offs (3.2 ) (1.7 ) (1.2 ) Recoveries — — — Foreign exchange and other 3.1 9.1 (1.4 ) Allowance for doubtful accounts, end of period $ 40.3 $ 35.4 $ 17.4
Summary of the Balance Sheet Location and Amounts of Contract Assets and Liabilities from Contracts with Customers	The following table provides the balance sheet location and amounts of contract assets and liabilities from contracts with customers. December 31, Balance Sheet Location 2020 2019 Unbilled accounts receivable Accounts receivable, less allowance for doubtful accounts $ 21.9 $ 28.6 Deferred revenue Accrued and other liabilities and Other noncurrent liabilities 143.2 122.2
Summary of Changes in Deferred Revenue	The following table presents the changes in deferred revenue: Year Ended December 31, 2020 2019 Balance at beginning of period $ 122.2 $ 7.6 Fair value of deferred revenue acquired in ARRIS acquisition — 90.1 Deferral of revenue 186.7 124.8 Recognition of unearned revenue (165.7 ) (100.3 ) Balance at end of period $ 143.2 $ 122.2

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2020
Leases [Abstract]
Summary of Supplemental Cash Flow Information Related to Operating Leases	Supplemental cash flow information related to operating leases: Year Ended December 31, 2020 2019 Operating cash paid to settle lease liabilities $ 74.6 $ 68.4 Right of use asset additions in exchange for lease liabilities 21.9 33.7
Summary of Supplemental Balance Sheet Information Related to Operating Leases	Supplemental balance sheet information related to operating leases: December 31, Balance Sheet Location 2020 2019 Right of use assets Other noncurrent assets $ 159.3 $ 204.9 Lease liabilities Accrued and other liabilities $ 62.4 $ 61.7 Lease liabilities Other noncurrent liabilities 119.1 160.4 Total lease liabilities $ 181.5 $ 222.1 Weighted average remaining lease term (in years) 3.9 Weighted average discount rate 7.4 %
Summary of Future Minimum Lease Payments Under Non-Cancellable Leases	Future minimum lease payments under non-cancellable leases as of December 31, 2020 are as follows: Operating Leases 2021 $ 73.5 2022 48.2 2023 36.9 2024 25.5 2025 13.1 Thereafter 23.7 Total minimum lease payments $ 220.9 Less: imputed interest (39.4 ) Total $ 181.5

Supplemental Financial Statem_2

Supplemental Financial Statement Information (Tables)	12 Months Ended
Supplemental Financial Statement Information (Tables)	Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Inventories	Inventories December 31, 2020 2019 Raw materials $ 280.2 $ 240.1 Work in process 140.6 121.6 Finished goods 668.1 614.2 $ 1,088.9 $ 975.9
Property, Plant and Equipment	Property, Plant and Equipment December 31, 2020 2019 Land and land improvements $ 60.5 $ 57.4 Buildings and improvements 339.8 333.3 Machinery and equipment 916.7 849.9 Construction in progress 73.2 37.0 1,390.2 1,277.6 Accumulated depreciation (705.7 ) (553.8 ) $ 684.5 $ 723.8
Accrued and Other Liabilities	Accrued and Other Liabilities December 31, 2020 2019 Compensation and employee benefit liabilities $ 277.9 $ 187.3 Operating lease liabilities 62.4 61.7 Accrued interest 120.2 97.8 Deferred revenue 90.0 82.6 Accrued royalties 21.9 63.9 Product warranty accrual 45.8 42.8 Restructuring reserve 22.0 24.0 Income taxes payable 13.0 15.8 Value-added taxes payable 29.3 27.3 Contract manufacturing liability 25.5 25.4 Patent claims and litigation settlements 25.7 70.1 Other 176.9 163.3 $ 910.6 $ 862.0
Changes in Accumulated Other Comprehensive Loss, Net of Tax	The following table presents changes in accumulated other comprehensive loss (AOCL), net of tax: Year Ended December 31, 2020 2019 Foreign currency translation Balance at beginning of period $ (162.7 ) $ (140.5 ) Other comprehensive income (loss) 82.2 (23.9 ) Amounts reclassified from AOCL — 1.7 Balance at end of period $ (80.5 ) $ (162.7 ) Hedging instruments Balance at beginning of period $ (8.9 ) $ (1.4 ) Other comprehensive loss (30.1 ) (7.5 ) Balance at end of period $ (39.0 ) $ (8.9 ) Defined benefit plan activity Balance at beginning of period $ (25.4 ) $ (17.3 ) Other comprehensive loss (10.9 ) (8.4 ) Amounts reclassified from AOCL (0.1 ) 0.3 Balance at end of period $ (36.4 ) $ (25.4 ) Net AOCL at end of period $ (155.9 ) $ (197.0 )
Cash Flow Information	Cash Flow Information Year Ended December 31, 2020 2019 2018 Cash paid during the period for: Income taxes, net of refunds $ 94.4 $ 120.9 $ 112.1 Interest 520.9 465.2 231.3

Financing (Tables)

Financing (Tables)	12 Months Ended
Financing (Tables)	Dec. 31, 2020
Debt Disclosure [Abstract]
Summary of Debt	December 31, 2020 2019 7.125% senior notes due July 2028 $ 700.0 $ — 5.00% senior notes due March 2027 750.0 750.0 8.25% senior notes due March 2027 1,000.0 1,000.0 6.00% senior notes due June 2025 1,300.0 1,500.0 5.50% senior notes due June 2024 — 650.0 5.00% senior notes due June 2021 — 150.0 6.00% senior secured notes due March 2026 1,500.0 1,500.0 5.50% senior secured notes due March 2024 1,250.0 1,250.0 Senior secured term loan due April 2026 3,160.0 3,192.0 Senior secured revolving credit facility — — Total principal amount of debt $ 9,660.0 $ 9,992.0 Less: Original issue discount, net of amortization (24.8 ) (29.2 ) Less: Debt issuance costs, net of amortization (114.6 ) (130.4 ) Less: Current portion (32.0 ) (32.0 ) Total long-term debt $ 9,488.6 $ 9,800.4
Scheduled Maturities of Long-Term Debt	The following table summarizes scheduled maturities of long-term debt as of December 31, 2020: 2021 2022 2023 2024 2025 Thereafter Scheduled maturities of long-term debt $ 32.0 $ 32.0 $ 32.0 $ 1,282.0 $ 1,332.0 $ 6,950.0

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	12 Months Ended
Derivatives and Hedging Activities (Tables)	Dec. 31, 2020
Not Designated as Hedging Instrument [Member]
Balance Sheet Location and Fair Value of Company	The following table presents the balance sheet location and fair value of the Company’s derivatives not designated as hedging instruments: December 31, Contract Type Location of Asset (Liability) 2020 2019 Foreign currency contracts Prepaid expenses and other current assets $ 11.7 $ 4.9 Foreign currency contracts Accrued and other liabilities (3.3 ) (5.9 ) Total derivatives not designated as hedging instruments $ 8.4 $ (1.0 )
Pretax Impact of Foreign Currency Forward Contracts, Both Matured and Outstanding, not Designated as Hedging Instruments	The pretax impact of the foreign currency forward contracts, both matured and outstanding, on the Consolidated Statements of Operations is as follows: Year Ended December 31, Location of Gain (Loss) 2020 2019 2018 Other expense, net $ 24.9 $ (13.6 ) $ (17.8 )
Derivative Instruments Designated as Hedging Instrument [Member] \| Net Investment Hedges [Member]
Balance Sheet Location and Fair Value of Company	The following table presents the balance sheet location and fair value of the derivative instruments designated as net investment hedges: December 31, Contract Type Location of Asset (Liability) 2020 2019 Foreign currency contracts Other noncurrent assets $ — $ 5.8 Foreign currency contracts Accrued and other liabilities (21.1 ) — Total derivatives designated as net investment hedging instruments $ (21.1 ) $ 5.8
Impact of Effective Portion of Derivatives, Designated as Hedging Instruments	The after tax impact of the forward contracts designated as net investment hedging instruments, both matured and outstanding, on the Consolidated Statements of Operations is as follows : Year Ended December 31, Location of Gain (Loss) 2020 2019 2018 Other comprehensive income (loss), net of tax $ (19.9 ) $ 5.6 $ 3.5
Derivative Instruments Designated as Hedging Instrument [Member] \| Cash Flow Hedges of Interest Rate Risk [Member]
Balance Sheet Location and Fair Value of Company	The following table presents the balance sheet location and fair value of the derivative instruments designated as cash flow hedges of interest rate risk: December 31, Contract Type Location of Asset (Liability) 2020 2019 Interest rate swap contracts Other noncurrent liabilities $ (29.9 ) $ (16.3 )
Impact of Effective Portion of Derivatives, Designated as Hedging Instruments	The impact of the effective portion of the interest rate swap contracts designated as cash flow hedging instruments on the Consolidated Statements of Comprehensive Income (Loss) is as follows: Year Ended December 31, Location of Gain (Loss) 2020 2019 Other comprehensive income (loss), net of tax $ (10.2 ) $ (12.2 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Carrying Amounts, Estimated Fair Values and Valuation Input Levels of the Company's Debt Instruments, Interest Rate Derivatives and Foreign Currency Contracts	The carrying amounts, estimated fair values and valuation input levels of the Company’s debt instruments, interest rate derivatives and foreign currency contracts as of December 31, 2020 and December 31, 2019, are as follows: December 31, 2020 December 31, 2019 Carrying Amount Fair Value Carrying Amount Fair Value Valuation Inputs Assets: Foreign currency contracts $ 11.7 $ 11.7 $ 10.7 $ 10.7 Level 2 Liabilities: 7.125% senior notes due 2028 $ 700.0 $ 743.8 $ — $ — Level 2 5.00% senior notes due 2027 750.0 741.5 750.0 696.4 Level 2 8.25% senior notes due 2027 1,000.0 1,068.5 1,000.0 1,052.5 Level 2 6.00% senior notes due 2025 1,300.0 1,329.3 1,500.0 1,501.7 Level 2 5.50% senior notes due 2024 — — 650.0 656.0 Level 2 5.00% senior notes due 2021 — — 150.0 149.9 Level 2 6.00% senior secured notes due 2026 1,500.0 1,576.8 1,500.0 1,595.6 Level 2 5.50% senior secured notes due 2024 1,250.0 1,285.9 1,250.0 1,302.1 Level 2 Senior secured term loan due 2026 3,160.0 3,156.1 3,192.0 3,219.9 Level 2 Senior secured revolving credit facility — — — — Level 2 Foreign currency contracts 24.4 24.4 5.9 5.9 Level 2 Interest rate swap contracts 29.9 29.9 16.3 16.3 Level 2

Restructuring Costs (Tables)

Restructuring Costs (Tables)	12 Months Ended
Restructuring Costs (Tables)	Dec. 31, 2020
Summary of Company's Net Pretax Restructuring Charges	The Company’s net pretax restructuring charges, by segment, were as follows: Year Ended December 31, 2020 2019 2018 Broadband $ 17.8 $ 36.9 $ 11.7 Home 30.0 23.2 — OWN 15.7 6.9 17.1 VCN 24.9 20.7 15.2 Total $ 88.4 $ 87.7 $ 44.0
Restructuring Reserves Included in Company's Consolidated Balance Sheets	Restructuring reserves were included in the Company’s Consolidated Balance Sheets as follows: December 31, 2020 2019 Accrued and other liabilities $ 22.0 $ 24.0 Other noncurrent liabilities 4.0 4.4 Total liability $ 26.0 $ 28.4
ARRIS Integration Restructuring Plan [Member]
Activity within Liability Established for Restructuring Actions, Included in Other Accrued Liabilities	The activity within the liability established for the ARRIS integration restructuring actions was as follows: Employee- Related Costs Other Total Balance at December 31, 2018 $ — $ — $ — Obligation assumed in ARRIS acquisition 2.3 — 2.3 Additional expense 81.8 4.3 86.1 Cash paid (60.9 ) (1.0 ) (61.9 ) Non-cash items (0.1 ) (1.3 ) (1.4 ) Balance at December 31, 2019 23.1 2.0 25.1 Additional expense 78.3 10.1 88.4 Cash (paid) received (77.2 ) 3.0 (74.2 ) Non-cash items 0.2 (14.3 ) (14.1 ) Balance at December 31, 2020 $ 24.4 $ 0.8 $ 25.2

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
Employee Benefit Plans (Tables)	Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Summary of Defined Benefit Pension Plan	The following table summarizes information for the defined benefit pension plans: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation, beginning $ 12.8 $ 2.2 $ 251.5 $ 208.8 Obligation assumed in ARRIS acquisition — 10.0 — 12.6 Service cost — — 4.3 4.0 Interest cost 0.3 0.3 4.0 5.2 Actuarial loss 1.1 0.9 29.1 27.5 Benefits paid (0.7 ) (0.6 ) (5.3 ) (4.6 ) Settlements — — (9.2 ) (6.4 ) Foreign exchange and other — — 36.1 4.4 Benefit obligation, ending $ 13.5 $ 12.8 $ 310.5 $ 251.5 Change in plan assets: Fair value of plan assets, beginning $ — $ — $ 230.8 $ 203.4 Assets assumed in ARRIS acquisition — — — 4.2 Employer and plan participant contributions 0.7 0.6 6.8 4.9 Return on plan assets — — 23.2 25.0 Benefits paid (0.7 ) (0.6 ) (5.3 ) (4.6 ) Settlements — — (9.2 ) (6.4 ) Foreign exchange and other — — 32.8 4.3 Fair value of plan assets, ending $ — $ — $ 279.1 $ 230.8 Funded status, net liability $ 13.5 $ 12.8 $ 31.4 $ 20.7
Balance Sheet Location of Pension and Postretirement Liabilities and Assets	The following table presents the balance sheet location of the Company's pension liabilities and assets: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Accrued and other liabilities $ (0.8 ) $ (0.8 ) $ (0.5 ) $ (0.5 ) Other noncurrent liabilities (12.7 ) (12.0 ) (34.4 ) (23.2 ) Other noncurrent assets — — 3.5 3.0
Summary of Company's Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets	The following table summarizes information for the Company’s pension plans with an accumulated benefit obligation in excess of plan assets: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Projected benefit obligation $ 13.5 $ 12.8 $ 51.5 $ 30.9 Accumulated benefit obligation 13.5 12.8 48.5 26.1 Fair value of plan assets — — 26.1 8.5
Summary of Pretax Amounts Included in Accumulated Other Comprehensive Loss	The following table summarizes pretax amounts included in accumulated other comprehensive loss: December 31, U.S. Plans Non-U.S. Plans 2020 2019 2020 2019 Unrecognized net actuarial loss $ (2.3 ) $ (1.3 ) $ (43.4 ) $ (31.5 ) Unrecognized prior service cost — — (0.5 ) (0.7 ) Total $ (2.3 ) $ (1.3 ) $ (43.9 ) $ (32.2 )
Pretax Amounts for Net Periodic Benefit Cost and Other Amounts Included in Other Comprehensive Income (Loss) for the Defined Benefit Pension and Other Postretirement Benefit Plans	Actuarial gains and losses are amortized using a corridor approach. The corridor is equal to 10% of the greater of the benefit obligation and the fair value of the assets. Gains and losses in excess of the corridor are generally amortized over the average remaining life of the plan participants. Pretax amounts for net periodic benefit cost and other amounts included in other comprehensive income (loss) for the defined benefit pension plans consisted of the following components: Year Ended December 31, U.S. Plans Non-U.S. Plans 2020 2019 2018 2020 2019 2018 Service cost $ — $ — $ — $ 4.3 $ 4.0 $ 4.1 Interest cost 0.3 0.3 4.2 4.0 5.2 5.2 Recognized actuarial loss 0.1 — 0.4 1.3 0.7 1.3 Expected return on plan assets — — (5.1 ) (7.0 ) (6.8 ) (7.7 ) Settlement loss — — 34.5 1.5 0.9 — Net periodic benefit cost 0.4 0.3 34.0 4.1 4.0 2.9 Changes in plan assets and benefit obligations included in other comprehensive income (loss): Change in unrecognized net actuarial loss (gain) 1.0 0.9 8.7 13.4 9.6 (5.6 ) Change in unrecognized prior service cost — — — (0.2 ) — 0.3 Settlement — — (34.5 ) (1.5 ) (0.9 ) — Total included in other comprehensive income (loss) 1.0 0.9 (25.8 ) 11.7 8.7 (5.3 ) Total recognized in net periodic benefit cost and included in other comprehensive income (loss) $ 1.4 $ 1.2 $ 8.2 $ 15.8 $ 12.7 $ (2.4 )
Significant Weighted Average Assumptions Used in Determining Benefit Obligations and Net Periodic Benefit Cost	Significant weighted average assumptions used in determining benefit obligations and net periodic benefit cost are as follows: U.S. Plans Non-U.S. Plans 2020 2019 2018 2020 2019 2018 Benefit obligations: Discount rate 2.07 % 2.95 % 3.70 % 1.02 % 1.65 % 2.50 % Rate of compensation increase — % — % — % 3.59 % 3.74 % 3.92 % Net periodic benefit cost: Discount rate 2.95 % 3.70 % 3.50 % 1.65 % 2.50 % 2.23 % Rate of return on plan assets — % — % — % 2.33 % 3.03 % 3.41 % Rate of compensation increase — % — % — % 3.74 % 3.92 % 3.92 %
Summary of the Company's Plan Assets for Estimated Fair Values and the Valuation Input Levels	The Company had no U.S. defined benefit pension plan assets as of December 31, 2020 or 2019. The estimated fair values and the valuation input levels of the Company’s non-U.S. defined benefit pension plan assets are as follows: December 31, 2020 Non-U.S. Plans Level 1 Fair Value Level 2 Fair Value Mutual funds: International equity $ 31.7 $ 30.8 International debt 42.2 101.7 Absolute return — 29.3 Other 13.6 29.8 Total $ 87.5 $ 191.6 December 31, 2019 Non-U.S. Plans Level 1 Fair Value Level 2 Fair Value Mutual funds: International equity $ 27.7 $ 16.4 International debt 37.7 97.5 Absolute return — 33.8 Other 8.3 9.4 Total $ 73.7 $ 157.1
Summarizes Projected Benefit Payments from Pension and Other Postretirement Benefit Plans	The following table summarizes projected benefit payments from pension plans through 2030, including benefits attributable to estimated future service (in millions): U.S. Plans Non-U.S. Plans 2021 $ 0.8 $ 9.0 2022 0.8 8.1 2023 0.9 6.4 2024 0.9 10.2 2025 0.9 10.1 2026-2030 4.6 56.6

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income (Loss) Before Income Taxes Includes Results from Domestic and International Operations	Income (loss) before income taxes includes the results from domestic and international operations as follows: Year Ended December 31, 2020 2019 2018 U.S. companies $ (689.7 ) $ (1,112.7 ) $ 64.0 Non-U.S. companies 35.2 38.7 106.7 Income (loss) before income taxes $ (654.5 ) $ (1,074.0 ) $ 170.7
Summary of Components of Income Tax Expense (Benefit)	The components of income tax expense (benefit) were as follows: Year Ended December 31, 2020 2019 2018 Current: Federal $ (0.1 ) $ 33.3 $ 9.6 Foreign 67.3 72.3 64.7 State 6.4 10.7 5.4 Current income tax expense $ 73.6 $ 116.3 $ 79.7 Deferred: Federal $ (131.0 ) $ (198.2 ) $ (26.1 ) Foreign (7.1 ) (30.8 ) (20.5 ) State (16.6 ) (31.8 ) (2.6 ) Deferred income tax benefit (154.7 ) (260.8 ) (49.2 ) Total income tax expense (benefit) $ (81.1 ) $ (144.5 ) $ 30.5
Summary of Reconciliation of Statutory U.S. Federal Income Tax Rate to Company's Provision for Income Taxes	The reconciliation of income taxes calculated at the statutory U.S. federal income tax rate to the Company’s provision for income taxes was as follows: Year Ended December 31, 2020 2019 2018 Provision (benefit) for income taxes at federal statutory rate $ (137.4 ) $ (225.6 ) $ 35.8 State income taxes, net of federal tax effect (21.6 ) (26.2 ) 7.6 Other permanent items 4.2 6.2 8.0 Equity-based compensation 16.1 3.4 (4.6 ) U.S. tax reform 2.2 1.6 (7.8 ) Other changes in tax laws and tax rulings (38.2 ) 2.2 (0.2 ) Goodwill related items 42.8 77.9 — Base erosion and anti-abuse tax — 13.5 — GILTI 0.8 — 6.0 Federal tax credits (23.4 ) (23.1 ) (2.3 ) Change in unrecognized tax benefits (2.6 ) (6.6 ) (22.2 ) Withholding taxes and Subpart F income, net of foreign tax credits 23.6 20.9 4.9 Foreign earnings taxed at other than federal rate 20.9 6.0 1.1 Tax provision adjustments and revisions to prior years' returns 7.1 (3.4 ) (5.5 ) Change in valuation allowances 24.4 8.7 9.7 Total provision (benefit) for income taxes $ (81.1 ) $ (144.5 ) $ 30.5
Components of Deferred Income Tax Assets and Liabilities and Classification of Deferred Tax Balances	The components of deferred income tax assets and liabilities and the classification of deferred tax balances on the balance sheet were as follows: December 31, 2020 2019 Deferred tax assets: Accounts receivable, inventory and warranty reserves $ 114.3 $ 130.2 Employee benefits 59.9 55.8 Foreign net operating loss and tax credit carryforwards 512.8 523.4 Federal net operating loss and tax credit carryforwards 159.5 152.0 State net operating loss and tax credit carryforwards 120.0 121.0 Unrecognized tax benefits 42.7 42.1 Interest limitation 9.3 43.3 Capitalized research and development costs 320.2 230.1 Other 68.3 72.2 Total deferred tax assets 1,407.0 1,370.1 Valuation allowance (583.9 ) (596.6 ) Total deferred tax assets, net of valuation allowance 823.1 773.5 Deferred tax liabilities: Intangible assets (690.7 ) (815.7 ) Property, plant and equipment (34.6 ) (43.8 ) Undistributed foreign earnings (14.7 ) (22.6 ) Other (1.2 ) (3.4 ) Total deferred tax liabilities (741.2 ) (885.5 ) Net deferred tax asset (liability) $ 81.9 $ (112.0 ) Deferred taxes recognized on the balance sheet: Noncurrent deferred tax asset (included with other noncurrent assets) 288.1 103.1 Noncurrent deferred tax liability (206.2 ) (215.1 ) Net deferred tax asset (liability) $ 81.9 $ (112.0 )
Reconciliation of Beginning and End of Period Amounts of Gross Unrecognized Tax Benefits	The following table reflects a reconciliation of the beginning and end of period amounts of gross unrecognized tax benefits, excluding interest and penalties: Year Ended December 31, 2020 2019 2018 Balance at beginning of period $ 191.9 $ 20.1 $ 46.6 Increase related to prior periods 2.5 12.3 4.0 Decrease related to prior periods (4.5 ) (1.2 ) (0.7 ) Increase related to current periods 5.0 8.5 — Decrease related to settlements with taxing authorities (0.9 ) (1.9 ) (3.9 ) Decrease related to lapse in statutes of limitations (2.6 ) (15.0 ) (25.9 ) Increase (decrease) related to the Acquisition (0.9 ) 169.1 — Balance at end of period $ 190.5 $ 191.9 $ 20.1
Summary of Income Tax Expense (Benefit) Related to Other Comprehensive Income (Loss)	The following table presents income tax expense (benefit) related to amounts presented in the other comprehensive income (loss): Year Ended December 31, 2020 2019 2018 Foreign currency translation $ 1.4 $ (0.9 ) $ (1.9 ) Defined benefit plans (11.1 ) (8.4 ) 4.0 Total $ (9.7 ) $ (9.3 ) $ 2.1

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
Stockholders' Equity (Tables)	Dec. 31, 2020
Equity [Abstract]
Summary of the Equity-Based Compensation Expense Included in the Statements of Operations	The following table shows a summary of the equity-based compensation expense included in the Consolidated Statements of Operations: Year ended December 31, 2020 2019 2018 Selling, general and administrative $ 63.0 $ 55.1 $ 34.2 Cost of sales 18.5 13.5 5.7 Research and development 33.5 22.2 5.0 Total equity-based compensation expense $ 115.0 $ 90.8 $ 44.9 The Company believes the valuation techniques and the approaches utilized to develop the underlying assumptions are appropriate in estimating the fair values of its equity-based compensation. Estimates of fair value are not intended to predict actual future events or the value ultimately realized by employees who receive equity awards. Subsequent events are not indicative of the reasonableness of the original estimates of fair value made by the Company.
Summary of Stock Option Activity	The following table summarizes the stock option activity (in millions, except per share data and years): Shares Weighted Average Option Exercise Price Per Share Weighted Average Remaining Contractual Term in Years Aggregate Intrinsic Value Options outstanding at December 31, 2019 9.6 $ 17.70 Exercised (1.5 ) $ 5.92 Expired (0.2 ) $ 30.31 Forfeited (1.7 ) $ 19.05 Options outstanding at December 31, 2020 6.2 $ 19.86 6.6 $ 5.6 Options vested at December 31, 2020 2.7 $ 21.31 4.5 $ 5.7 Options unvested at December 31, 2020 3.5 $ 18.72 8.2 $ 0.1
Summary of Exercise Price	The exercise prices of outstanding options at December 31, 2020 were in the following ranges (in millions, except per share data and years): Options Outstanding Options Exercisable Range of Exercise Prices Shares Weighted Average Remaining Contractual Life in Years Weighted Average Exercise Price Per Share Shares Weighted Average Exercise Price Per Share $5.50 to $18.50 0.9 1.7 $ 7.02 0.8 $ 6.09 $18.51 to $30.00 4.4 8.1 $ 19.06 1.1 $ 20.41 $30.01 to $45.00 0.9 6.1 $ 36.45 0.8 $ 36.31 $5.50 to $45.00 6.2 6.6 $ 19.86 2.7 $ 21.31
Summary of Weighted Average Assumptions Used to Estimate Fair Value of Stock Option	There were no stock option grants during the year ended December 31, 2020. The following table presents the weighted average assumptions used to estimate the fair value of stock option awards granted for the years ended December 31, 2019 and 2018: Year Ended December 31, 2019 2018 Expected option term (in years) 6.5 6.0 Risk-free interest rate 2.2 % 2.7 % Expected volatility 40.0 % 35.0 % Weighted average exercise price $ 18.47 $ 38.34 Weighted average fair value at grant date $ 8.00 $ 14.83
Summary of RSU Activity	The following table summarizes the RSU activity (in millions, except per share data): Restricted Stock Units Weighted Average Grant Date Fair Value Per Share Non-vested share units at December 31, 2019 7.7 $ 22.30 Granted 10.2 $ 10.49 Vested and shares issued (3.3 ) $ 23.09 Forfeited (1.4 ) $ 15.91 Non-vested share units at December 31, 2020 13.2 $ 13.62
Summary of PSU Activity	The following table summarizes the PSU activity (in millions, except per share data): Performance Share Units Weighted Average Grant Date Fair Value Per Share Non-vested share units at December 31, 2019 2.7 $ 12.47 Granted 1.6 $ 4.63 Vested and shares issued (2.5 ) $ 7.29 Forfeited (0.3 ) $ 12.10 Non-vested share units at December 31, 2020 1.5 $ 4.03

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
Commitments and Contingencies (Tables)	Dec. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Summary of Activity in Product Warranty Accrual, Included in Other Accrued Liabilities	The following table summarizes the activity in the product warranty accrual, included in accrued and other liabilities and other noncurrent liabilities: Year Ended December 31, 2020 2019 2018 Product warranty accrual, beginning of period $ 61.0 $ 15.6 $ 16.9 Obligation assumed under ARRIS acquisition — 57.4 — Provision for warranty claims 30.9 18.4 6.2 Warranty claims paid (32.4 ) (30.4 ) (7.4 ) Foreign exchange — — (0.1 ) Product warranty accrual, end of period $ 59.5 $ 61.0 $ 15.6

Industry Segments, Major Cust_2

Industry Segments, Major Customers, Related Party Transactions and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Summary of Financial Information by Reportable Segment	The following table provides summary financial information by reportable segment: December 31, 2020 2019 Identifiable segment-related assets: Broadband $ 6,451.6 $ 6,681.1 Home 1,698.5 2,178.7 OWN 1,264.4 1,394.1 VCN 3,352.3 3,476.4 Total identifiable segment-related assets 12,766.8 13,730.3 Reconciliation to total assets: Cash and cash equivalents 521.9 598.2 Deferred income tax assets 288.1 103.1 Total assets $ 13,576.8 $ 14,431.6
Summary of Net Sales, Adjusted EBITDA, Depreciation Expense and Additions to PP&E by Reportable Segment	The following table provides net sales, adjusted EBITDA, depreciation expense and additions to property, plant and equipment by reportable segment: Year Ended December 31, 2020 2019 2018 Net sales: Broadband $ 2,895.7 $ 2,363.8 $ 1,448.8 Home 2,360.0 2,539.0 — OWN 1,243.7 1,475.0 1,490.5 VCN 1,936.5 1,967.3 1,629.2 Consolidated net sales $ 8,435.9 $ 8,345.1 $ 4,568.5 Segment adjusted EBITDA: Broadband $ 640.5 $ 473.3 $ 309.4 Home 116.2 193.7 — OWN 278.5 361.2 323.6 VCN 180.0 269.3 280.6 Total segment adjusted EBITDA 1,215.2 1,297.5 913.6 Amortization of intangible assets (630.5 ) (593.2 ) (264.6 ) Restructuring costs, net (88.4 ) (87.7 ) (44.0 ) Equity-based compensation (115.0 ) (90.8 ) (44.9 ) Asset impairments (206.7 ) (376.1 ) (15.0 ) Transaction and integration costs (24.9 ) (195.3 ) (19.5 ) Acquisition accounting adjustments (20.6 ) (264.2 ) — Patent claims and litigation settlements (16.3 ) (55.0 ) — Executive severance (6.3 ) — — Depreciation (158.3 ) (143.7 ) (75.6 ) Consolidated operating income (loss) $ (51.8 ) $ (508.5 ) $ 450.0 Depreciation expense: Broadband $ 59.2 $ 55.6 $ 29.3 Home 34.3 30.2 — OWN 17.0 17.5 17.4 VCN 47.8 40.4 28.9 Consolidated depreciation expense $ 158.3 $ 143.7 $ 75.6 Additions to property, plant and equipment: Broadband $ 55.2 $ 42.5 $ 49.0 Home 19.0 6.5 — OWN 15.9 16.7 19.7 VCN 31.1 38.4 13.6 Consolidated additions to property, plant and equipment $ 121.2 $ 104.1 $ 82.3
Summary of Sales by Geographic Region, Based on Destination of Product Shipments or Service Provided	Sales by geographic region, based on the destination of product shipments or service provided, were as follows: Year Ended December 31, 2020 2019 2018 United States $ 5,185.3 $ 4,923.3 $ 2,539.2 Europe, Middle East and Africa (EMEA) 1,530.2 1,543.6 963.0 Asia Pacific (APAC) 797.2 919.7 735.6 Caribbean and Latin America (CALA) 610.3 650.7 242.9 Canada 312.9 307.8 87.8 Consolidated net sales $ 8,435.9 $ 8,345.1 $ 4,568.5

Background and Description of_2

Background and Description of the Business - Additional Information (Detail) $ in Billions	Apr. 04, 2019USD ($)
ARRIS [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Total purchase price	$ 7.7

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary Of Significant Accounting Policy [Line Items]
Tax benefit	50.00%
Performance obligation, description	Certain of the Company’s product performance obligations include proprietary operating system software, which typically is not considered separately identifiable. Therefore, sales of these products and the related software are considered one performance obligation.
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.
Advertising expense	$ 45.9	$ 39.5	$ 17.3
Foreign currency translation losses	$ (19.2)	$ (11.9)	$ (15.9)
Dilutive effect of equity-based awards			3.3
Stock Compensation Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Amount of outstanding equity based awards not included in computation of diluted earnings per share	17.4	11.2	2.1
Dilutive effect of equity-based awards	4.4	2.4
Stock Compensation Plan [Member] \| Convertible Preferred Stock [Member]
Summary Of Significant Accounting Policy [Line Items]
Dilutive effect of equity-based awards	37.1	27
Customers Located Outside of the U.S [Member] \| Sales Revenue, Net [Member]
Summary Of Significant Accounting Policy [Line Items]
Concentration risk percentage	39.00%	41.00%	44.00%
Minimum [Member] \| Product Contracts [Member]
Summary Of Significant Accounting Policy [Line Items]
Percentage of revenue from product sales	90.00%
Buildings and Improvements [Member] \| Minimum [Member]
Summary Of Significant Accounting Policy [Line Items]
Estimated useful lives of the assets	10 years
Buildings and Improvements [Member] \| Maximum [Member]
Summary Of Significant Accounting Policy [Line Items]
Estimated useful lives of the assets	35 years
Machinery and Equipment [Member] \| Minimum [Member]
Summary Of Significant Accounting Policy [Line Items]
Estimated useful lives of the assets	3 years
Machinery and Equipment [Member] \| Maximum [Member]
Summary Of Significant Accounting Policy [Line Items]
Estimated useful lives of the assets	10 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Summary of Earnings, Weighted Average Common Shares and Potential Common Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income (loss)	$ (573.4)	$ (929.5)	$ 140.2
Dividends on Series A convertible preferred stock	(56.1)	(40.7)
Deemed dividend on Series A convertible preferred stock		(3)
Net income (loss) attributable to common stockholders	$ (629.5)	$ (973.2)	$ 140.2
Denominator:
Weighted average common shares outstanding - basic	196.8	193.7	192
Dilutive effect of equity-based awards			3.3
Weighted average common shares outstanding - diluted	196.8	193.7	195.3
Earnings (loss) per share:
Basic	$ (3.20)	$ (5.02)	$ 0.73
Diluted	$ (3.20)	$ (5.02)	$ 0.72

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) $ in Billions	Apr. 04, 2019USD ($)
ARRIS [Member]
Business Acquisition [Line Items]
Total purchase price	$ 7.7

Acquisition - Summary of Estima

Acquisition - Summary of Estimated Fair Value of Identifiable Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Apr. 04, 2019	Dec. 31, 2018
Assets
Goodwill	$ 5,286.5	$ 5,471.7		$ 2,852.3
ARRIS [Member]
Assets
Cash and cash equivalents			$ 556.1
Accounts receivable			1,155
Inventory			995.5
Other current assets			132
Property, plant and equipment			316.6
Goodwill			2,981.4
Identifiable intangible assets			3,509.6
Other noncurrent assets			447.7
Less: Liabilities assumed
Current liabilities			(1,534.8)
Debt			(2,052)
Other noncurrent liabilities			(889.3)
Net acquisition cost			$ 5,617.8

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Details of Intangible Assets Other Than Goodwill (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,646.4	$ 6,605.1
Accumulated Amortization	2,996	2,341.5
Net Carrying Amount	3,650.4	4,263.6
Customer Base [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,524.1	3,503.3
Accumulated Amortization	1,563.2	1,318.8
Net Carrying Amount	1,960.9	2,184.5
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,024.3	1,021.9
Accumulated Amortization	376.6	308.3
Net Carrying Amount	647.7	713.6
Patents and Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,039.7	2,021.6
Accumulated Amortization	997.9	656.1
Net Carrying Amount	1,041.8	1,365.5
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	58.3	58.3
Accumulated Amortization	$ 58.3	$ 58.3

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Other Intangible Assets [Line Items]
Pretax impairment charges			$ 0	$ 0	$ 0
Amortization expense for intangible assets			630,500,000	593,200,000	264,600,000
Impairment of Goodwill	$ 0		206,700,000	376,100,000	0
Goodwill	5,286,500,000		5,286,500,000	5,471,700,000	2,852,300,000
Goodwill Impairment Loss	0		206,700,000	376,100,000	$ 0
Home [Member]
Goodwill and Other Intangible Assets [Line Items]
Impairment of Goodwill		$ 206,700,000	206,700,000	192,800,000
Goodwill	$ 0		0	209,300,000
Goodwill Impairment Loss		$ 206,700,000	$ 206,700,000	192,800,000
CPE [Member]
Goodwill and Other Intangible Assets [Line Items]
Impairment of Goodwill				192,800,000
Goodwill Impairment Loss				192,800,000
N&C [Member]
Goodwill and Other Intangible Assets [Line Items]
Impairment of Goodwill				142,100,000
Goodwill Impairment Loss				142,100,000
Ruckus [Member]
Goodwill and Other Intangible Assets [Line Items]
Impairment of Goodwill				41,200,000
Goodwill Impairment Loss				$ 41,200,000

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Estimated Amortization Expense for Next Five Years (Detail) $ in Millions	Dec. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 614.4
2022	547.4
2023	433.4
2024	346.1
2025	280.8
Thereafter	$ 1,428.3

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets - Goodwill by Reportable Segments (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, gross, Beginning balance	$ 6,080.3		$ 6,080.3	$ 6,058.8	$ 3,063.3
Accumulated impairment charges	(793.8)		(793.8)	(587.1)	(211)
Goodwill, net	5,286.5		5,286.5	5,471.7	2,852.3
Additions (Deductions)			(9.8)	2,991.2
Impairment	0		(206.7)	(376.1)	0
Other			31.3	4.3
Goodwill, gross, Ending balance	6,080.3		6,080.3	6,058.8	3,063.3
Accumulated impairment charges	(793.8)		(793.8)	(587.1)	(211)
Goodwill, net	5,286.5		5,286.5	5,471.7	2,852.3
Broadband [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	3,369.7		3,369.7	3,355.1	1,180.6
Accumulated impairment charges	(193.6)		(193.6)	(193.6)	(51.5)
Goodwill, net	3,176.1		3,176.1	3,161.5	1,129.1
Additions (Deductions)			(7.1)	2,171.2
Impairment				(142.1)
Other			21.7	3.3
Goodwill, gross, Ending balance	3,369.7		3,369.7	3,355.1	1,180.6
Accumulated impairment charges	(193.6)		(193.6)	(193.6)	(51.5)
Goodwill, net	3,176.1		3,176.1	3,161.5	1,129.1
Home [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	399.5		399.5	402.1
Accumulated impairment charges	(399.5)		(399.5)	(192.8)
Goodwill, net	0		0	209.3
Additions (Deductions)			(1.3)	403
Impairment		$ (206.7)	(206.7)	(192.8)
Other			(1.3)	(0.9)
Goodwill, gross, Ending balance	399.5		399.5	402.1
Accumulated impairment charges	(399.5)		(399.5)	(192.8)
Goodwill, net	0		0	209.3
OWN [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	669.1		669.1	666	666.4
Accumulated impairment charges	(159.5)		(159.5)	(159.5)	(159.5)
Goodwill, net	509.6		509.6	506.5	506.9
Other			3.1	(0.4)
Goodwill, gross, Ending balance	669.1		669.1	666	666.4
Accumulated impairment charges	(159.5)		(159.5)	(159.5)	(159.5)
Goodwill, net	509.6		509.6	506.5	506.9
VCN [Member]
Goodwill [Line Items]
Goodwill, gross, Beginning balance	1,642		1,642	1,635.6	1,216.3
Accumulated impairment charges	(41.2)		(41.2)	(41.2)
Goodwill, net	1,600.8		1,600.8	1,594.4	1,216.3
Additions (Deductions)			(1.4)	417
Impairment				(41.2)
Other			7.8	2.3
Goodwill, gross, Ending balance	1,642		1,642	1,635.6	1,216.3
Accumulated impairment charges	(41.2)		(41.2)	(41.2)
Goodwill, net	$ 1,600.8		$ 1,600.8	$ 1,594.4	$ 1,216.3

Revenue From Contracts With C_3

Revenue From Contracts With Customers - Schedule of Net Sales by Reportable Segment Disaggregated Based on Contract Type (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Consolidated net sales	$ 8,435.9	$ 8,345.1	$ 4,568.5
Product Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	7,894.6	7,916
Other Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	541.3	429.1
Mobility [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	2,895.7	2,363.8
Mobility [Member] \| Product Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	2,579.8	2,072.3
Mobility [Member] \| Other Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	315.9	291.5
Home [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	2,360	2,539
Home [Member] \| Product Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	2,351.7	2,529.4
Home [Member] \| Other Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	8.3	9.6
OWN [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	1,243.7	1,475	1,490.5
OWN [Member] \| Product Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	1,220	1,452.5
OWN [Member] \| Other Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	23.7	22.5
VCN [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	1,936.5	1,967.3	$ 1,629.2
VCN [Member] \| Product Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	1,743.1	1,861.8
VCN [Member] \| Other Contracts [Member]
Disaggregation Of Revenue [Line Items]
Consolidated net sales	$ 193.4	$ 105.5

Revenue From Contracts With C_4

Revenue From Contracts With Customers - Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts Notes And Loans Receivable Classified [Abstract]
Allowance for doubtful accounts, beginning of period	$ 35.4	$ 17.4	$ 14
Charged to costs and expenses	5	10.6	6
Write-offs	(3.2)	(1.7)	(1.2)
Foreign exchange and other	3.1	9.1	1.4
Allowance for doubtful accounts, end of period	$ 40.3	$ 35.4	$ 17.4

Revenue From Contracts With C_5

Revenue From Contracts With Customers - Summary of the Balance Sheet Location and Amounts of Contract Assets and Liabilities from Contracts with Customers (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Contract Assets And Liabilities [Line Items]
Deferred revenue	$ 90	$ 82.6
Accounts Receivable, Less Allowance for Doubtful Accounts [Member]
Schedule Of Contract Assets And Liabilities [Line Items]
Unbilled accounts receivable	21.9	28.6
Accrued and Other Liabilities and Other Noncurrent Liabilities [Member]
Schedule Of Contract Assets And Liabilities [Line Items]
Deferred revenue	$ 143.2	$ 122.2

Revenue From Contracts With C_6

Revenue From Contracts With Customers - Additional Information (Detail 1) $ in Millions	Dec. 31, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-12-31
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations	$ 90
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-12-31
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Performance obligations	$ 53.2
Maximum [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-12-31
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Minimum [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-12-31
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Revenue From Contracts With C_7

Revenue From Contracts With Customers - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue, Performance Obligation Satisfied over Time, Method Used, Description	As of December 31, 2020, the aggregate amount of the transaction price allocated to performance obligations that are unsatisfied and that have a duration of one year or less was $90.0 million, with the remaining $53.2 million having a duration greater than one year.

Revenue from Contract with Cust

Revenue from Contract with Customers - Summary of Changes in Deferred Revenue (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Contract With Customer Liability [Abstract]
Balance at beginning of period	$ 122.2	$ 7.6
Fair value of deferred revenue acquired in ARRIS acquisition		90.1
Deferral of revenue	186.7	124.8
Recognition of unearned revenue	(165.7)	(100.3)
Balance at end of period	$ 143.2	$ 122.2

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Finance lease, right-of-use asset	$ 0
Finance lease, liability	$ 0
Operating lease, option to extend	true
Operating lease, option to terminate	true
Operating lease expense	$ 105.2	$ 88.3
Cost for short-term, cancellable and variable leases	$ 31.3	$ 26.7

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information Related to Operating Leases (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating cash paid to settle lease liabilities	$ 74.6	$ 68.4
Right of use asset additions in exchange for lease liabilities	$ 21.9	$ 33.7

Leases - Summary of Supplemen_2

Leases - Summary of Supplemental Balance Sheet Information Related to Operating Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Fair Value of Assets (Liability), Right of use assets	$ 159.3	$ 204.9
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]		us-gaap:OtherNoncurrentAssetsMember
Fair Value of Assets (Liability), Total lease liabilities	62.4	$ 61.7
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]		comm:AccruedAndOtherLiabilitiesCurrent
Fair Value of Assets (Liability), Total lease liabilities	119.1	$ 160.4
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		us-gaap:OtherLiabilitiesNoncurrent
Fair Value of Assets (Liability), Total lease liabilities	$ 181.5	$ 222.1
Weighted average remaining lease term (in years)	3 years 10 months 24 days
Weighted average discount rate	7.40%

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Lease Payments Under Non-Cancellable Leases (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Leases, 2021	$ 73.5
Operating Leases, 2022	48.2
Operating Leases, 2023	36.9
Operating Leases, 2024	25.5
Operating Leases, 2025	13.1
Operating Leases, Thereafter	23.7
Operating Leases, Total minimum lease payments	220.9
Less: imputed interest	(39.4)
Operating Leases, Total	$ 181.5	$ 222.1

Supplemental Financial Statem_3

Supplemental Financial Statement Information - Inventories (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 280.2	$ 240.1
Work in process	140.6	121.6
Finished goods	668.1	614.2
Inventories, net	$ 1,088.9	$ 975.9

Supplemental Financial Statem_4

Supplemental Financial Statement Information - Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	$ 1,390.2	$ 1,277.6
Accumulated depreciation	(705.7)	(553.8)
Property, Plant and Equipment, net	684.5	723.8
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	60.5	57.4
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	339.8	333.3
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	916.7	849.9
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, gross	$ 73.2	$ 37

Supplemental Financial Statem_5

Supplemental Financial Statement Information - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Income Statement Elements [Abstract]
Depreciation expense	$ 158,300,000	$ 143,700,000	$ 75,600,000
Interest capitalized	$ 0	$ 0	$ 0

Supplemental Financial Statem_6

Supplemental Financial Statement Information - Accrued and Other Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Accrued and Other Liabilities [Abstract]
Compensation and employee benefit liabilities	$ 277.9	$ 187.3
Operating lease liabilities	62.4	61.7
Accrued interest	120.2	97.8
Deferred revenue	90	82.6
Accrued royalties	21.9	63.9
Product warranty accrual	45.8	42.8
Restructuring reserve	22	24
Income taxes payable	13	15.8
Value-added taxes payable	29.3	27.3
Contract manufacturing liability	25.5	25.4
Patent claims and litigation settlements	25.7	70.1
Other	176.9	163.3
Accrued and other liabilities	$ 910.6	$ 862

Supplemental Financial Statem_7

Supplemental Financial Statement Information - Changes in Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 836.3	$ 1,756.8
Ending balance	355	836.3
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(162.7)	(140.5)
Other comprehensive income (loss)	82.2	(23.9)
Amounts reclassified from AOCL		1.7
Ending balance	(80.5)	(162.7)
Hedging Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(8.9)	(1.4)
Other comprehensive income (loss)	(30.1)	(7.5)
Ending balance	(39)	(8.9)
Defined Benefit Plan Activity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(25.4)	(17.3)
Other comprehensive income (loss)	(10.9)	(8.4)
Amounts reclassified from AOCL	(0.1)	0.3
Ending balance	(36.4)	(25.4)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(197)	(159.2)
Ending balance	$ (155.9)	$ (197)

Supplemental Financial Statem_8

Supplemental Financial Statement Information - Cash Flow Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash paid during the period for:
Income taxes, net of refunds	$ 94.4	$ 120.9	$ 112.1
Interest	$ 520.9	$ 465.2	$ 231.3

Financing - Summary of Debt (De

Financing - Summary of Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Jul. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total principal amount of debt	$ 9,660		$ 9,992
Less: Original issue discount, net of amortization	(24.8)		(29.2)
Less: Debt issuance costs, net of amortization	(114.6)		(130.4)
Less: Current portion	(32)		(32)
Long-term debt	9,488.6		9,800.4
7.125% Senior Notes Due July 2028 [Member]
Debt Instrument [Line Items]
Senior notes	700	$ 700
5.00% Senior Notes Due March 2027 [Member]
Debt Instrument [Line Items]
Senior notes	750		750
8.25% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior notes	1,000		1,000
6.00% Senior Notes Due June 2025 [Member]
Debt Instrument [Line Items]
Senior notes	1,300		1,500
5.50% Senior Notes Due June 2024 [Member]
Debt Instrument [Line Items]
Senior notes			650
5.00% Senior Notes Due June 2021 [Member]
Debt Instrument [Line Items]
Senior notes			150
6.00% Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Senior secured notes	1,500		1,500
5.50% Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Senior secured notes	1,250		1,250
Senior Secured Term Loan Due April 2026 [Member]
Debt Instrument [Line Items]
Senior secured notes	$ 3,160		$ 3,192

Financing - Summary of Debt (Pa

Financing - Summary of Debt (Parenthetical) (Detail)	1 Months Ended	12 Months Ended
Financing - Summary of Debt (Parenthetical) (Detail)	Jul. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
7.125% Senior Notes Due July 2028 [Member]
Debt Instrument [Line Items]
Maturity month and year	2028-07	2028-07
Interest rate	7.125%	7.125%	7.125%
5.00% Senior Notes Due March 2027 [Member]
Debt Instrument [Line Items]
Maturity month and year		2027-03
Interest rate		5.00%	5.00%
8.25% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Maturity month and year		2027-03
Interest rate		8.25%	8.25%
6.00% Senior Notes Due June 2025 [Member]
Debt Instrument [Line Items]
Maturity month and year		2025-06
Interest rate		6.00%	6.00%
5.50% Senior Notes Due June 2024 [Member]
Debt Instrument [Line Items]
Maturity month and year		2024-06
Interest rate	5.50%	5.50%	5.50%
5.00% Senior Notes Due June 2021 [Member]
Debt Instrument [Line Items]
Maturity month and year		2021-06
Interest rate	5.00%	5.00%	5.00%
6.00% Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Maturity month and year		2026-03
Interest rate		6.00%	6.00%
5.50% Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Maturity month and year		2024-03
Interest rate		5.50%	5.50%
Senior Secured Term Loan Due April 2026 [Member]
Debt Instrument [Line Items]
Maturity month and year		2026-04

Financing - Additional Informat

Financing - Additional Information (Detail) - USD ($)	Apr. 04, 2019	Jul. 31, 2020	Feb. 29, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Excess cash flow percentage				50.00%
Current portion of long-term debt				$ 32,000,000	$ 32,000,000
Current portion of long term debt				32,000,000	32,000,000
Total assets				13,576,800,000	14,431,600,000
Total liabilities				12,180,000,000	12,595,300,000
Net sales				$ 8,435,900,000	$ 8,345,100,000	$ 4,568,500,000
Weighted average effective interest rate				5.86%	6.13%
Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Total assets				$ 2,466,000,000	$ 3,773,000,000
Total liabilities				956,000,000	714,000,000
Net sales				$ 2,430,000,000	$ 3,044,000,000
Assets, Total [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage				18.00%	26.00%
Liabilities, Total [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage				8.00%	6.00%
Sales Revenue, Net [Member] \| Non Guarantor Subsidiaries Concentration Risk [Member]
Debt Instrument [Line Items]
Concentration risk percentage				29.00%	37.00%
Eurodollar [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.50%
Debt instrument, basis spread on variable rate				1.50%
Eurodollar [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.25%
Debt instrument, basis spread on variable rate				1.25%
LIBOR floor Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Debt instrument, basis spread on variable rate				0.50%
LIBOR floor Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.25%
Debt instrument, basis spread on variable rate				0.25%
2026 Term Loan [Member]
Debt Instrument [Line Items]
Current portion of long-term debt				$ 0
Current portion of long term debt				0
7.125% Senior Notes Due July 2028 [Member]
Debt Instrument [Line Items]
Senior notes		$ 700,000,000		$ 700,000,000
Interest rate		7.125%		7.125%	7.125%
Maturity month and year		2028-07		2028-07
5.00% Senior Notes Due June 2021 [Member]
Debt Instrument [Line Items]
Senior notes					$ 150,000,000
Interest rate		5.00%		5.00%	5.00%
Maturity month and year				2021-06
Maturity year		2021
Debt instrument amount redeemed			$ 100,000,000
5.50% Senior Notes Due June 2024 [Member]
Debt Instrument [Line Items]
Senior notes					$ 650,000,000
Interest rate		5.50%		5.50%	5.50%
Maturity month and year				2024-06
Maturity year		2024
5.50% Senior Secured Notes Due 2024 [Member]
Debt Instrument [Line Items]
Interest rate				5.50%	5.50%
Maturity month and year				2024-03
Maturity year				2024
Debt instrument redemption charges				$ 11,900,000
Senior secured notes				$ 1,250,000,000	$ 1,250,000,000
Issuance period				2019-02
Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Debt instrument amount redeemed					500,000,000
Debt issuance cost Write-Off				$ 5,000,000	$ 2,100,000
Senior Note 2028 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Other expense				$ 11,700,000
6.00% Senior Secured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Interest rate				6.00%	6.00%
Maturity month and year				2026-03
Maturity year				2026
Senior secured notes				$ 1,500,000,000	$ 1,500,000,000
Issuance period				2019-02
5.00% Senior Notes Due March 2027 [Member]
Debt Instrument [Line Items]
Senior notes				$ 750,000,000	$ 750,000,000
Interest rate				5.00%	5.00%
Maturity month and year				2027-03
Issuance period				2017-03
Maturity date				Mar. 15, 2027
Debt Instrument, Maturity Date				Mar. 15, 2027
6.00% Senior Notes Due June 2025 [Member]
Debt Instrument [Line Items]
Senior notes				$ 1,300,000,000	$ 1,500,000,000
Interest rate				6.00%	6.00%
Maturity month and year				2025-06
Issuance period				2015-06
Maturity date				Jun. 15, 2025
Debt Instrument, Maturity Date				Jun. 15, 2025
8.25% Senior Notes Due 2027 [Member]
Debt Instrument [Line Items]
Senior notes				$ 1,000,000,000	$ 1,000,000,000
Interest rate				8.25%	8.25%
Maturity month and year				2027-03
Issuance period				2019-02
Maturity date				Mar. 1, 2027
Debt Instrument, Maturity Date				Mar. 1, 2027
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date				Mar. 1, 2022
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Redemption date, period end date				Mar. 1, 2022
8.25% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances
Debt Instrument [Line Items]
Debt instrument redemption price percentage				108.25%
Redemption date, period end date				Mar. 1, 2022
Percentage of principal amount of debt redeemed				40.00%
5.50% Senior Secured Notes Due March 2024 [Member]
Debt Instrument [Line Items]
Interest rate				5.50%
Maturity date				Mar. 1, 2024
Debt Instrument, Maturity Date				Mar. 1, 2024
5.50% Senior Secured Notes Due March 2024 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date				Mar. 1, 2021
5.50% Senior Secured Notes Due March 2024 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Redemption date, period end date				Mar. 1, 2021
5.50% Senior Secured Notes Due March 2024 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances
Debt Instrument [Line Items]
Debt instrument redemption price percentage				105.50%
Redemption date, period end date				Mar. 1, 2021
Percentage of principal amount of debt redeemed				40.00%
5.50% Senior Secured Notes Due March 2024 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt instrument redemption price percentage				103.00%
Redemption date, period end date				Mar. 1, 2021
Percentage of principal amount of debt redeemed				10.00%
5.50% Senior Secured Notes Due March 2024 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				101.00%
6.00% Senior Secured Notes Due March 2026 [Member]
Debt Instrument [Line Items]
Interest rate				6.00%
Maturity date				Mar. 1, 2026
Debt Instrument, Maturity Date				Mar. 1, 2026
Senior Secured Notes Due May Two Thousand Twenty Six \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date				Mar. 1, 2022
Senior Secured Notes Due May Two Thousand Twenty Six \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Redemption date, period end date				Mar. 1, 2022
Senior Secured Notes Due May Two Thousand Twenty Six \| Senior Notes [Member] \| Redemption Under Certain Circumstances
Debt Instrument [Line Items]
Debt instrument redemption price percentage				106.00%
Redemption date, period end date				Mar. 1, 2022
Percentage of principal amount of debt redeemed				40.00%
Senior Secured Notes Due May Two Thousand Twenty Six \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Debt instrument redemption price percentage				103.00%
Redemption date, period end date				Mar. 1, 2022
Percentage of principal amount of debt redeemed				10.00%
7.125% Senior Notes Due July 2024 [Member]
Debt Instrument [Line Items]
Maturity date				Jul. 1, 2028
Debt Instrument, Maturity Date				Jul. 1, 2028
7.125% Senior Notes Due 2028 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date				Mar. 1, 2022
7.125% Senior Notes Due 2028 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Redemption date, period end date				Mar. 1, 2022
7.125% Senior Notes Due 2028 [Member] \| Senior Notes [Member] \| Redemption Under Certain Circumstances
Debt Instrument [Line Items]
Debt instrument redemption price percentage				107.125%
Redemption date, period end date				Jul. 1, 2023
Percentage of principal amount of debt redeemed				40.00%
7.125% Senior Notes Due 2028 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				101.00%
5.00% Senior Secured Notes Due 2027 [Member]
Debt Instrument [Line Items]
Interest rate				5.00%
Maturity date				Mar. 15, 2027
Debt Instrument, Maturity Date				Mar. 15, 2027
6.00% Senior Secured Notes Due 2025 [Member]
Debt Instrument [Line Items]
Maturity date				Jun. 15, 2025
Debt Instrument, Maturity Date				Jun. 15, 2025
5.00% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Redemption date, period end date				Mar. 15, 2022
5.00% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				100.00%
Redemption date, period end date				Mar. 15, 2022
5.00% Senior Notes Due 2027 [Member] \| Senior Notes [Member] \| Option of the Holders [Member] \| Redemption Upon Certain Change of Control Events [Member]
Debt Instrument [Line Items]
Debt instrument redemption price percentage				101.00%
6% Senior Notes Due 2025 [Member] \| Senior Notes [Member]
Debt Instrument [Line Items]
Other expense				$ 6,000,000
Repayments of senior debt				200,000,000
Debt issuance cost written off				$ 2,600,000
Senior Secured Term Loan Due April 2026 [Member]
Debt Instrument [Line Items]
Maturity month and year				2026-04
Senior secured notes				$ 3,160,000,000	$ 3,192,000,000
Debt instrument, variable rate basis				The interest rate is, at the Company’s option, either (1) the base rate (which is the highest of (w) the greater of the then-current federal funds rate set by the Federal Reserve Bank of New York and the overnight federal funds rate, in each case, plus 0.5%, (x) the prime rate on such day, (y) the one-month Eurodollar rate published on such date plus 1.00% and (z) 1.00% per annum) plus an applicable margin of 2.25% or (2) one-, two-, three- or six-month LIBOR or, if available from all lenders, 12-month LIBOR or any shorter period (selected at the option of CommScope, Inc.) plus an applicable margin of 3.25%. The 2026 Term Loan is subject to a LIBOR floor of 0.00%.
Scheduled amortization payments per year				$ 32,000,000
Senior secured term loan, frequency of payments				quarterly
Senior secured term loan, maturity date				2026-04
Incremental borrowings maximum term loan facility on principal amount				$ 950,000,000
Incremental borrowings criteria percentage of consolidated EBITDA				50.00%
Senior Secured Term Loan Due April 2026 [Member] \| Federal Reserve Bank of New York and Federal Funds Rate, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.50%
Debt instrument, basis spread on variable rate				0.50%
Senior Secured Term Loan Due April 2026 [Member] \| Eurodollar Rate, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Debt instrument, basis spread on variable rate				1.00%
Senior Secured Term Loan Due April 2026 [Member] \| Percentage per Annum, Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.00%
Debt instrument, basis spread on variable rate				1.00%
Senior Secured Term Loan Due April 2026 [Member] \| 1.00% per Annum, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan One [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.25%
Debt instrument, basis spread on variable rate				2.25%
Senior Secured Term Loan Due April 2026 [Member] \| LIBOR, Plus Base Rate [Member] \| Interest Rate on Term Loan, Scenario Plan Two [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				3.25%
Debt instrument, basis spread on variable rate				3.25%
Senior Secured Term Loan Due April 2026 [Member] \| LIBOR floor Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				0.00%
Debt instrument, basis spread on variable rate				0.00%
2026 Term Loan [Member]
Debt Instrument [Line Items]
Scheduled amortization payments				$ 32,000,000
Current portion of long-term debt				32,000,000
Current portion of long term debt				32,000,000
Two Thousand Twenty Two Term Loan
Debt Instrument [Line Items]
Debt issuance cost written off					7,700,000
Term loan original issue at discount					4,100,000
Ticking fees					$ 12,300,000
Asset Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility maximum borrowing capacity	$ 1,000,000,000
Asset-based revolving credit facility, maturity month and year	2024-04
Asset-based revolving credit facility amount borrowed				250,000,000
Asset-based revolving credit facility amount repaid				250,000,000
Senior secured revolving credit facility				0
Asset-based revolving credit facility available borrowing capacity				735,100,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured revolving credit facility				$ 250,000,000
Revolving credit facility, description				The following fees are applicable under the Revolving Credit Facility: (i) an unused line fee of (x) 0.25% per annum of the unused portion of the Revolving Credit Facility when the average unused portion of the facility is less than 50% of the aggregate commitments under the Revolving Credit Facility or (y) 0.375% per annum of the unused portion of the Revolving Credit Facility when the average unused portion of the facility is equal to or greater than 50% of the aggregate commitments under the Revolving Credit Facility; (ii) a letter of credit participation fee on the aggregate stated amount of each letter of credit equal to the applicable margin for adjusted Eurodollar rate loans, as applicable; (iii) a letter of credit fronting fee of 0.125% per annum, multiplied by the average aggregate daily maximum amount available to be drawn under all applicable letters of credit issued by such letter of credit issuer; and (iv) certain other customary fees and expenses of the lenders and agents thereunder
Revolving credit facility unused capacity commitment fee when average unused portion is less than 50% percentage	0.25%
Revolving credit facility unused capacity commitment fee when average unused portion is equal to or greater than 50% percentage	0.375%
Letter of credit fronting fee	0.125%
Revolving credit facility, covenant, description				The Revolving Credit Facility contains a Covenant Fixed Charge Coverage Ratio (as defined in the credit agreement governing the Revolving Credit Facility) of 1.00 to 1.00. The credit agreement provides that the Covenant Fixed Charge Coverage Ratio must be tested and must exceed the level set forth above only; in the event that excess availability under the Revolving Credit Facility is less than the greater of $80 million and 10% of the borrowing base as of the end of the most recent fiscal quarter.
Credit agreement covenant fixed charge coverage ratio	100.00%
Debt covenant fixed charge coverage ratio, triggering event, minimum percentage on borrowings base				10.00%
Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility maximum borrowing capacity				$ 400,000,000
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Asset-based revolving credit facility available borrowing capacity				$ 80,000,000

Financing - Scheduled Maturitie

Financing - Scheduled Maturities of Long- Term Debt (Detail) $ in Millions	Dec. 31, 2020USD ($)
Long Term Debt By Maturity [Abstract]
2021	$ 32
2022	32
2023	32
2024	1,282
2025	1,332
Thereafter	$ 6,950

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Not Designated as Hedging Instrument [Member] \| Foreign Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Notional value	$ 515.5
Not Designated as Hedging Instrument [Member] \| Foreign Currency Contracts [Member] \| Maximum [Member]
Derivatives, Fair Value [Line Items]
Maturities ranging	6 months
Derivative Instruments Designated as Hedging Instrument [Member] \| Foreign Currency Contracts [Member] \| Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Notional value	$ 300
Derivative Instruments Designated as Hedging Instrument [Member] \| Foreign Currency Contracts [Member] \| Maximum [Member] \| Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Maturities ranging	6 months
Derivative Instruments Designated as Hedging Instrument [Member] \| Interest Rate Swap Contracts [Member] \| Cash Flow Hedges of Interest Rate Risk [Member]
Derivatives, Fair Value [Line Items]
Notional value	$ 600
Derivative Instruments Designated as Hedging Instrument [Member] \| Interest Rate Swap Contracts [Member] \| Maximum [Member] \| Cash Flow Hedges of Interest Rate Risk [Member]
Derivatives, Fair Value [Line Items]
Maturities ranging	39 months

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Balance Sheet Location and Fair Value of the Company's Derivatives (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total derivatives	$ 8.4	$ (1)
Not Designated as Hedging Instrument [Member] \| Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency contracts	11.7	4.9
Not Designated as Hedging Instrument [Member] \| Accrued and Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign currency contracts	(3.3)	(5.9)
Derivative Instruments Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Total derivatives	(21.1)	5.8
Derivative Instruments Designated as Hedging Instrument [Member] \| Prepaid Expenses and Other Current Assets [Member] \| Cash Flow Hedges of Interest Rate Risk [Member]
Derivatives, Fair Value [Line Items]
Interest rate swap contracts	(29.9)	(16.3)
Derivative Instruments Designated as Hedging Instrument [Member] \| Other Noncurrent Assets [Member] \| Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Foreign currency contracts		$ 5.8
Derivative Instruments Designated as Hedging Instrument [Member] \| Accrued and Other Liabilities [Member] \| Net Investment Hedges [Member]
Derivatives, Fair Value [Line Items]
Foreign currency contracts	$ (21.1)

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Pretax Impact of Foreign Currency Forward Contracts, Both Matured and Outstanding, not Designated as Hedging Instruments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Expense, Net [Member] \| Foreign Currency Contracts [Member] \| Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other expense, net	$ 24.9	$ (13.6)	$ (17.8)

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Impact of Forward Contracts, Designated as Hedging Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Member] \| Foreign Currency Contracts [Member] \| Derivative Instruments Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), net of tax	$ (19.9)	$ 5.6	$ 3.5

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Impact of Effective Portion of Interest Rate Swap Contracts, Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Comprehensive Income (Loss), Net of Tax [Member] \| Interest Rate Swap Contracts [Member] \| Derivative Instruments Designated as Hedging Instrument [Member] \| Cash Flow Hedges of Interest Rate Risk [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other comprehensive income (loss), net of tax	$ (10.2)	$ (12.2)

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts, Estimated Fair Values and Valuation Input Levels of the Company's Debt Instruments, Interest Rate Derivatives and Foreign Currency Contracts (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Carrying Amount [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Foreign currency contracts	$ 11.7	$ 10.7
Carrying Amount [Member] \| Other Noncurrent Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swap contracts	29.9	16.3
Carrying Amount [Member] \| Other Accrued Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Foreign currency contracts	24.4	5.9
Fair Value [Member] \| Prepaid Expenses and Other Current Assets [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Foreign currency contracts	11.7	10.7
Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swap contracts	29.9	16.3
Fair Value [Member] \| Other Accrued Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Foreign currency contracts	24.4	5.9
7.125% Senior Notes Due 2028 [Member] \| Carrying Amount [Member] \| Long Term Debt Noncurrent [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	700
7.125% Senior Notes Due 2028 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	743.8
5.00% Senior Notes Due 2027 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	750	750
5.00% Senior Notes Due 2027 [Member] \| Carrying Amount [Member] \| Long Term Debt Noncurrent [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	750	750
5.00% Senior Notes Due 2027 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	741.5	696.4
8.25% Senior Notes Due 2027 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,000	1,000
8.25% Senior Notes Due 2027 [Member] \| Carrying Amount [Member] \| Long Term Debt Noncurrent [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,000	1,000
8.25% Senior Notes Due 2027 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,068.5	1,052.5
6.00% Senior Notes Due 2025 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,300	1,500
6.00% Senior Notes Due 2025 [Member] \| Carrying Amount [Member] \| Long Term Debt Noncurrent [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,300	1,500
6.00% Senior Notes Due 2025 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,329.3	1,501.7
5.50% Senior Notes Due 2024 [Member] \| Carrying Amount [Member] \| Long Term Debt Noncurrent [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		650
5.00% Senior Notes Due 2021 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		150
5.00% Senior Notes Due 2021 [Member] \| Carrying Amount [Member] \| Other Noncurrent Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		150
5.00% Senior Notes Due 2021 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		149.9
6.00% Senior Secured Notes Due 2026 [Member] \| Carrying Amount [Member] \| Other Noncurrent Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior secured debt	1,500	1,500
6.00% Senior Secured Notes Due 2026 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,576.8	1,595.6
5.50% Senior Secured Notes Due 2024 [Member] \| Carrying Amount [Member] \| Other Noncurrent Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior secured debt	1,250	1,250
5.50% Senior Secured Notes Due 2024 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	1,285.9	1,302.1
Senior Secured Term Loan Due 2026 [Member] \| Carrying Amount [Member] \| Other Noncurrent Liabilities [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior secured debt	3,160	3,192
5.50% Senior Notes Due 2024 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		650
5.50% Senior Notes Due 2024 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes		656
Senior Secured Term Loans Due 2026 [Member] \| Fair Value [Member] \| Other Noncurrent Liabilities [Member] \| Level 2 [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior secured term loans	$ 3,156.1	$ 3,219.9

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of Goodwill	$ 0			$ 206.7	$ 376.1	$ 0
Non-Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of Goodwill		$ 206.7	$ 376.1

Restructuring Costs - Summary o

Restructuring Costs - Summary of Company's Net Pretax Restructuring Charges (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	$ 88.4	$ 87.7	$ 44
Mobility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	17.8	36.9	11.7
Home [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	30	23.2
OWN [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	15.7	6.9	17.1
VCN [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	$ 24.9	$ 20.7	$ 15.2

Restructuring Costs - Restructu

Restructuring Costs - Restructuring Reserves Included in Company's Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 22	$ 24
Ending balance	26	28.4
Accrued and Other Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	22	24
Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, non-current	$ 4	$ 4.4

Restructuring Costs - Activity

Restructuring Costs - Activity within Liability Established for Restructuring Actions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 28.4
Restructuring costs, net	88.4	$ 87.7	$ 44
Ending balance	26	28.4
ARRIS Integration Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	25.1
Obligation assumed in ARRIS acquisition		2.3
Restructuring costs, net		86.1
Cash (paid) received	(74.2)	(61.9)
Non-cash items	(14.1)	(1.4)
Ending balance	25.2	25.1
Employee-Related Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	78.3
Employee-Related Costs [Member] \| ARRIS Integration Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	23.1
Obligation assumed in ARRIS acquisition		2.3
Restructuring costs, net		81.8
Cash (paid) received	(77.2)	(60.9)
Non-cash items	0.2	(0.1)
Ending balance	24.4	23.1
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring costs, net	10.1
Other Costs [Member] \| ARRIS Integration Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	2
Restructuring costs, net		4.3
Cash (paid) received	3	(1)
Non-cash items	(14.3)	(1.3)
Ending balance	$ 0.8	$ 2

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Detail)	12 Months Ended
Restructuring Costs - Additional Information (Detail)	Dec. 31, 2020USD ($)
ARRIS [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of operating lease right of use assets	$ 8,800,000
Fixed asset write-offs	2,800,000
ARRIS [Member] \| 2020 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	21,400,000
ARRIS [Member] \| 2021 to 2022 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	3,800,000
BNS [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	2,500,000
Recognized restructuring charges	153,000,000
BNS [Member] \| 2021 to 2022 [Member]
Restructuring Cost and Reserve [Line Items]
Expected cash payments	800,000
Restructuring Charges [Member] \| ARRIS [Member]
Restructuring Cost and Reserve [Line Items]
Gain on sale of facility	2,100,000
Proceeds from sale of facility	$ 4,800,000

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Company recognized pretax costs	$ 2,600,000	$ 3,500,000	$ 700,000
Accrued liability, included in other noncurrent liabilities	$ 43,200,000	43,800,000
Pension Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage required for corridor approach	10.00%
Pension Benefit Plan [Member] \| Other Expense, Net [Member] \| Upon Termination of Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial gains (losses)			34,500,000
Pension Benefit Plan [Member] \| U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's defined benefit pension plans	$ 13,500,000	12,800,000
Defined benefit pension plan assets	0	0
Company expects to contribute to defined benefit pension plans	800,000
Pension and other postretirement benefit liabilities	12,700	12,000
Pretax gains recognized in accumulated other comprehensive loss	(2,300,000)	(1,300,000)
Net periodic benefit cost	400,000	300,000	34,000,000
Pension Benefit Plan [Member] \| Non-U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's defined benefit pension plans	261,800,000	211,800,000
Defined benefit pension plan assets	279,100,000	230,800,000	203,400,000
Company expects to contribute to defined benefit pension plans	6,700,000
Pension and other postretirement benefit liabilities	34,400	23,200
Pretax gains recognized in accumulated other comprehensive loss	(43,900,000)	(32,200,000)
Net periodic benefit cost	4,100,000	4,000,000	2,900,000
Other Postretirement Benefit Plans [Member] \| Other Expense, Net [Member] \| Upon Termination of Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial gains (losses) and prior service credits			9,700,000
Other Postretirement Benefit Plans [Member] \| U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and other postretirement benefit liabilities	4,500,000	3,900,000
Pretax gains recognized in accumulated other comprehensive loss	4,500,000	2,300,000
Net periodic benefit cost	1,300,000	1,000,000	7,400,000
CommScope, Inc. Retirement Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Company's contribution to defined contribution retirement savings plans	$ 56,600,000	$ 41,800,000	$ 24,000,000

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Defined Benefit Pension Plan (Detail) - Pension Benefits [Member] - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.Plans [Member]
Change in benefit obligation:
Benefit obligation, beginning	$ 12,800,000	$ 2,200,000
Interest cost	300,000	300,000	$ 4,200,000
Actuarial loss	1,100,000	900,000
Benefits paid	(700,000)	(600,000)
Benefit obligation, ending	13,500,000	12,800,000	2,200,000
Change in plan assets:
Fair value of plan assets, beginning	0
Employer and plan participant contributions	700,000	600,000
Benefits paid	(700,000)	(600,000)
Fair value of plan assets, ending	0	0
Funded status, net liability	13,500,000	12,800,000
Non-U.S.Plans [Member]
Change in benefit obligation:
Benefit obligation, beginning	251,500,000	208,800,000
Service cost	4,300,000	4,000,000	4,100,000
Interest cost	4,000,000	5,200,000	5,200,000
Actuarial loss	29,100,000	27,500,000
Benefits paid	(5,300,000)	(4,600,000)
Settlements	(9,200,000)	(6,400,000)
Foreign exchange and other	36,100,000	4,400,000
Benefit obligation, ending	310,500,000	251,500,000	208,800,000
Change in plan assets:
Fair value of plan assets, beginning	230,800,000	203,400,000
Employer and plan participant contributions	6,800,000	4,900,000
Return on plan assets	23,200,000	25,000,000
Benefits paid	(5,300,000)	(4,600,000)
Settlements	(9,200,000)	(6,400,000)
Foreign exchange and other	32,800,000	4,300,000
Fair value of plan assets, ending	279,100,000	230,800,000	$ 203,400,000
Funded status, net liability	$ 31,400,000	20,700,000
ARRIS [Member] \| U.S.Plans [Member]
Change in benefit obligation:
Obligation assumed in ARRIS acquisition		10,000,000
ARRIS [Member] \| Non-U.S.Plans [Member]
Change in benefit obligation:
Obligation assumed in ARRIS acquisition		12,600,000
Change in plan assets:
Assets assumed in ARRIS acquisition		$ 4,200,000

Employee Benefit Plans - Balanc

Employee Benefit Plans - Balance Sheet Location of Pension Liabilities and Assets (Detail) - Pension Benefits [Member] - USD ($)	Dec. 31, 2020	Dec. 31, 2019
U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued and other liabilities	$ (800)	$ (800)
Other noncurrent liabilities	(12,700)	(12,000)
Non-U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued and other liabilities	(500)	(500)
Other noncurrent liabilities	(34,400)	(23,200)
Other noncurrent assets	$ 3,500	$ 3,000

Employee Benefit Plans - Summ_2

Employee Benefit Plans - Summary of Company's Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - Pension Benefits [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 13.5	$ 12.8
Accumulated benefit obligation	13.5	12.8
Non-U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	51.5	30.9
Accumulated benefit obligation	48.5	26.1
Fair value of plan assets	$ 26.1	$ 8.5

Employee Benefit Plans - Summ_3

Employee Benefit Plans - Summary of Pretax Amounts Included in Accumulated Other Comprehensive Loss (Detail) - Pension Benefits [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	$ (2.3)	$ (1.3)
Total	(2.3)	(1.3)
Non-U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	(43.4)	(31.5)
Unrecognized prior service cost	(0.5)	(0.7)
Total	$ (43.9)	$ (32.2)

Employee Benefit Plans - Pretax

Employee Benefit Plans - Pretax Amounts for Net Periodic Benefit Cost and Other Amounts Included in Other Comprehensive Income (Loss) for the Defined Benefit Pension and Other Postretirement Benefit Plans (Detail) - Pension Benefits [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 0.3	$ 0.3	$ 4.2
Recognized actuarial loss	0.1		0.4
Expected return on plan assets			(5.1)
Settlement loss			34.5
Net periodic benefit cost	0.4	0.3	34
Changes in plan assets and benefit obligations included in other comprehensive income (loss):
Change in unrecognized net actuarial loss (gain)	1	0.9	8.7
Settlement			(34.5)
Total included in other comprehensive income (loss)	1	0.9	(25.8)
Total recognized in net periodic benefit cost and included in other comprehensive income (loss)	1.4	1.2	8.2
Non-U.S.Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4.3	4	4.1
Interest cost	4	5.2	5.2
Recognized actuarial loss	1.3	0.7	1.3
Expected return on plan assets	(7)	(6.8)	(7.7)
Settlement loss	1.5	0.9
Net periodic benefit cost	4.1	4	2.9
Changes in plan assets and benefit obligations included in other comprehensive income (loss):
Change in unrecognized net actuarial loss (gain)	13.4	9.6	(5.6)
Change in unrecognized prior service cost	(0.2)		0.3
Settlement	(1.5)	(0.9)
Total included in other comprehensive income (loss)	11.7	8.7	(5.3)
Total recognized in net periodic benefit cost and included in other comprehensive income (loss)	$ 15.8	$ 12.7	$ (2.4)

Employee Benefit Plans - Signif

Employee Benefit Plans - Significant Weighted Average Assumptions Used in Determining Benefit Obligations and Net Periodic Benefit Cost (Detail) - Pension Benefits [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
U.S.Plans [Member]
Benefit obligations:
Discount rate	2.07%	2.95%	3.70%
Net periodic benefit cost:
Discount rate	2.95%	3.70%	3.50%
Non-U.S.Plans [Member]
Benefit obligations:
Discount rate	1.02%		2.50%	1.65%
Rate of compensation increase	3.59%		3.92%	3.74%
Net periodic benefit cost:
Discount rate	1.65%	2.50%	2.23%
Rate of return on plan assets	2.33%	3.03%	3.41%
Rate of compensation increase	3.74%	3.92%	3.92%

Employee Benefit Plans - Summ_4

Employee Benefit Plans - Summary of the Company's Plan Assets for Estimated Fair Values and the Valuation Input Levels (Detail) - Pension Benefits [Member] - Non-U.S.Plans [Member] - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	$ 279.1	$ 230.8	$ 203.4
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	87.5	73.7
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	191.6	157.1
International Equity [Member] \| Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	31.7	27.7
International Equity [Member] \| Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	30.8	16.4
International Debt [Member] \| Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	42.2	37.7
International Debt [Member] \| Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	101.7	97.5
Absolute Return [Member] \| Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	29.3	33.8
Other [Member] \| Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	13.6	8.3
Other [Member] \| Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated fair value of plan assets	$ 29.8	$ 9.4

Employee Benefit Plans - Summ_5

Employee Benefit Plans - Summarizes Projected Benefit Payments from Pension (Detail) - Pension Benefits [Member] $ in Millions	Dec. 31, 2020USD ($)
U.S.Plans [Member]
Schedule Of Pension And Other Postretirement Benefits Expected Benefit Payments [Line Items]
2021	$ 0.8
2022	0.8
2023	0.9
2024	0.9
2025	0.9
2026-2030	4.6
Non-U.S.Plans [Member]
Schedule Of Pension And Other Postretirement Benefits Expected Benefit Payments [Line Items]
2021	9
2022	8.1
2023	6.4
2024	10.2
2025	10.1
2026-2030	$ 56.6

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Income Taxes Includes Results from Domestic and International Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. companies	$ (689.7)	$ (1,112.7)	$ 64
Non-U.S. companies	35.2	38.7	106.7
Income (loss) before income taxes	$ (654.5)	$ (1,074)	$ 170.7

Income Taxes - Summary of Compo

Income Taxes - Summary of Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ (0.1)	$ 33.3	$ 9.6
Foreign	67.3	72.3	64.7
State	6.4	10.7	5.4
Current income tax expense	73.6	116.3	79.7
Deferred:
Federal	(131)	(198.2)	(26.1)
Foreign	(7.1)	(30.8)	(20.5)
State	(16.6)	(31.8)	(2.6)
Deferred income tax benefit	(154.7)	(260.8)	(49.2)
Total income tax expense (benefit)	$ (81.1)	$ (144.5)	$ 30.5

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation of Statutory U.S. Federal Income Tax Rate to Company's Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes at federal statutory rate	$ (137.4)	$ (225.6)	$ 35.8
State income taxes, net of federal tax effect	(21.6)	(26.2)	7.6
Other permanent items	4.2	6.2	8
Equity-based compensation	16.1	3.4	(4.6)
U.S. tax reform	2.2	1.6	(7.8)
Other changes in tax laws and tax rulings	(38.2)	2.2	(0.2)
Goodwill related items	42.8	77.9
Base erosion and anti-abuse tax		13.5
GILTI	0.8		6
Federal tax credits	(23.4)	(23.1)	(2.3)
Change in unrecognized tax benefits	(2.6)	(6.6)	(22.2)
Withholding taxes and Subpart F income, net of foreign tax credits	23.6	20.9	4.9
Foreign earnings taxed at other than federal rate	20.9	6	1.1
Tax provision adjustments and revisions to prior years' returns	7.1	(3.4)	(5.5)
Change in valuation allowances	24.4	8.7	9.7
Total income tax expense (benefit)	$ (81.1)	$ (144.5)	$ 30.5

Income Taxes - Components of De

Income Taxes - Components of Deferred Income Tax Assets and Liabilities and Classification of Deferred Tax Balances (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Accounts receivable, inventory and warranty reserves	$ 114.3	$ 130.2
Employee benefits	59.9	55.8
Foreign net operating loss and tax credit carryforwards	512.8	523.4
Federal net operating loss and tax credit carryforwards	159.5	152
State net operating loss and tax credit carryforwards	120	121
Unrecognized tax benefits	42.7	42.1
Interest limitation	9.3	43.3
Capitalized research and development costs	320.2	230.1
Other	68.3	72.2
Total deferred tax assets	1,407	1,370.1
Valuation allowance	(583.9)	(596.6)
Total deferred tax assets, net of valuation allowance	823.1	773.5
Deferred tax liabilities:
Intangible assets	(690.7)	(815.7)
Property, plant and equipment	(34.6)	(43.8)
Undistributed foreign earnings	(14.7)	(22.6)
Other	(1.2)	(3.4)
Total deferred tax liabilities	(741.2)	(885.5)
Net deferred tax asset (liability)	81.9
Net deferred tax asset (liability)		(112)
Deferred taxes recognized on the balance sheet:
Noncurrent deferred tax asset (included with other noncurrent assets)	288.1	103.1
Noncurrent deferred tax liability	(206.2)	(215.1)
Net deferred tax asset (liability)	$ 81.9
Net deferred tax asset (liability)		$ (112)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Income Taxes [Line Items]
Foreign net operating loss carryforwards	$ 499.6
Foreign tax credit carryforwards	13.2
Federal net operating loss carryforwards	7.5
Federal tax credit carryforwards	105.8
State net operating loss carryforwards	60.2
State tax credit carryforwards	59.8
Valuation allowance established against other deferred tax assets	5.8
Deferred tax liability related to undistributed foreign earnings	14.7	$ 22.6
Unrecognized tax benefits	145.7
Reduction of penalties in next twelve months	8.5
Interest and penalties	9.2	10.5
Net expense (benefit) for interest and penalties recognized	$ (1.3)	$ 2.1	$ (3.8)
Federal, state and local tax returns filling limitation, minimum	3 years
Federal, state and local tax returns filling limitation, maximum	4 years
Recognized amount related to the lapse of applicable statutes	$ 3.5
CommScope Technologies Finance LLC [Member]
Schedule Of Income Taxes [Line Items]
Federal, state and local tax returns filling limitation, minimum	3 years
Federal, state and local tax returns filling limitation, maximum	7 years
Foreign Carryforwards [Member]
Schedule Of Income Taxes [Line Items]
Foreign tax credit carryforwards	$ 46.2
Net operating loss carryforward, valuation allowance	$ 480.9
Foreign Carryforwards [Member] \| Minimum [Member]
Schedule Of Income Taxes [Line Items]
Expiration date of tax credit	2023
Expiration date of operating loss	2021
Federal Carryforwards [Member] \| Domestic Tax Authority [Member]
Schedule Of Income Taxes [Line Items]
Net operating loss carryforward, valuation allowance	$ 15.2
Federal Carryforwards [Member] \| Minimum [Member]
Schedule Of Income Taxes [Line Items]
Expiration date of tax credit	2028
Federal Carryforwards [Member] \| Minimum [Member] \| U.S. Foreign Tax Authority [Member]
Schedule Of Income Taxes [Line Items]
Expiration date of tax credit	2023
State Carryforwards [Member] \| State and Local Jurisdiction [Member]
Schedule Of Income Taxes [Line Items]
Net operating loss carryforward, valuation allowance	$ 82
State Carryforwards [Member] \| Minimum [Member] \| State and Local Jurisdiction [Member]
Schedule Of Income Taxes [Line Items]
Expiration date of tax credit	2021
Expiration date of operating loss	2022

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Beginning and End of Period Amounts of Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Balance at beginning of period	$ 191.9	$ 20.1	$ 46.6
Increase related to prior periods	2.5	12.3	4
Decrease related to prior periods	(4.5)	(1.2)	(0.7)
Increase related to current periods	5	8.5
Decrease related to settlements with taxing authorities	(0.9)	(1.9)	(3.9)
Decrease related to lapse in statutes of limitations	(2.6)	(15)	(25.9)
Increase (decrease) related to the Acquisition	(0.9)	169.1
Balance at end of period	$ 190.5	$ 191.9	$ 20.1

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense (Benefit) Related to Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Foreign currency translation	$ 1.4	$ (0.9)	$ (1.9)
Defined benefit plans	(11.1)	(8.4)	4
Total	$ (9.7)	$ (9.3)	$ 2.1

Series A Convertible Preferre_2

Series A Convertible Preferred Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Apr. 04, 2019	Dec. 31, 2020	Dec. 31, 2019
Series A Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock liquidation preference	100.00%
Discounted rate of remaining scheduled dividends	10.00%
Carlyle [Member]
Class Of Stock [Line Items]
Agreement date	Nov. 8, 2018
Carlyle [Member] \| Series A Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock, share issued	1,000,000
Total purchase price	$ 1,000
Total purchase price per share	$ 1,000
Direct and incremental expenses incurred		$ 3
Convertible preferred stock, conversion price per share	$ 27.50
Initial conversion rate of common stock per share of the convertible preferred stock	36.3636
Convertible preferred stock, conversion price per share	$ 49.50
Convertible preferred stock threshold trading days	30 days
Convertible preferred stock threshold consecutive trading days	45 days
Convertible preferred stock threshold final trading days of consecutive trading days	5 days
Carlyle [Member] \| Series A Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Liquidation perference per share	$ 1,000
Convertible preferred stock, dividend payment terms		Holders of the Convertible Preferred Stock are entitled to a cumulative dividend at the rate of 5.5% per year, payable quarterly in arrears.
Convertible preferred stock, dividend rate percentage	5.50%
Increase in convertible preferred stock dividend rate percentage		2.50%
Convertible preferred stock, dividend rate if dividend not paid		8.00%
Additional increase in convertible preferred stock dividend rate percentage quarterly		0.50%
Convertible preferred stock dividend rate percentage subject to a cap per year		11.00%
Dividends declared payable in cash		$ 14.3	$ 40.7
Dividends declared payable in kind		$ 41.8

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)	Oct. 01, 2020	Oct. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 08, 2020	Jun. 21, 2019
Stockholders Equity [Line Items]
Unrecognized compensation costs related to unvested stock options, (RSUs) and (PSUs)			$ 113,800,000
Recognition period of unrecognized compensation expense			1 year 4 months 24 days
Capitalized equity-based compensation costs			$ 0
Intrinsic value of options exercised			$ 7,100,000	$ 9,800,000	$ 12,700,000
Projected dividend yield			0.00%
Restricted Stock Units (RSUs) [Member]
Stockholders Equity [Line Items]
Weighted average grant date fair value per unit			$ 10.49	$ 20.29	$ 37.87
Fair value of stock vested			$ 76,000,000	$ 56,000,000	$ 42,100,000
Restricted Stock Units (RSUs) [Member] \| Minimum [Member]
Stockholders Equity [Line Items]
Vesting period, year			1 year
Restricted Stock Units (RSUs) [Member] \| Maximum [Member]
Stockholders Equity [Line Items]
Vesting period, year			3 years
Stock Options [Member]
Stockholders Equity [Line Items]
Contractual term			10 years
Weighted average grant date fair value per unit				$ 8	$ 14.83
Stock Options [Member] \| Minimum [Member]
Stockholders Equity [Line Items]
Vesting period, year			3 years
Stock Options [Member] \| Maximum [Member]
Stockholders Equity [Line Items]
Vesting period, year			5 years
Performance Shares [Member]
Stockholders Equity [Line Items]
Shares, Granted		2,300,000
Vesting period, year		1 year	3 years
Weighted average grant date fair value per unit			$ 4.63	$ 11.19	$ 38.34
Fair value of stock vested			$ 18,400,000	$ 2,700,000	$ 7,900,000
Stock option awards granted		2,300,000
Number of shares outstanding			0
Performance Shares [Member] \| Minimum [Member]
Stockholders Equity [Line Items]
Number of shares issued on performance		0.00%	0.00%
Performance Shares [Member] \| Maximum [Member]
Stockholders Equity [Line Items]
Number of shares issued on performance		200.00%	100.00%
2020 Executive Inducement Awards [Member]
Stockholders Equity [Line Items]
Number of common stock authorizing for issuance			4,300,000			6,800,000	8,000,000
2020 Executive Inducement Awards [Member] \| Restricted Stock Units (RSUs) [Member]
Stockholders Equity [Line Items]
Shares, Granted	500,000
Stock option awards granted	500,000
2020 Executive Inducement Awards [Member] \| Performance Shares [Member]
Stockholders Equity [Line Items]
Shares, Granted	1,100,000
Stock option awards granted	1,100,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of the Equity-Based Compensation Expense Included in the Statements of Operations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total equity-based compensation expense	$ 115	$ 90.8	$ 44.9
Selling, General and Administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total equity-based compensation expense	63	55.1	34.2
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total equity-based compensation expense	18.5	13.5	5.7
Research and Development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total equity-based compensation expense	$ 33.5	$ 22.2	$ 5

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Stock Option Activity (Detail) - Non Qualified Stock Option [Member] $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Options Beginning Balance \| shares	9.6
Shares, Exercised \| shares	(1.5)
Shares, Expired \| shares	(0.2)
Shares, Forfeited \| shares	(1.7)
Shares, Options Ending Balance \| shares	6.2
Shares, Options vested Ending Balance \| shares	2.7
Shares, Options unvested Ending Balance \| shares	3.5
Weighted Average Option Exercise Price Per Share, Options Beginning Balance \| $ / shares	$ 17.70
Weighted Average Option Exercise Price Per Share, Exercised \| $ / shares	5.92
Weighted Average Option Exercise Price Per Share, Expired \| $ / shares	30.31
Weighted Average Option Exercise Price Per Share, Forfeited \| $ / shares	19.05
Weighted Average Option Exercise Price Per Share, Options Ending Balance \| $ / shares	19.86
Weighted Average Option Exercise Price Per Share, Options vested Ending Balance \| $ / shares	21.31
Weighted Average Option Exercise Price Per Share, Options unvested Ending Balance \| $ / shares	$ 18.72
Weighted Average Remaining Contractual Term in Years, Options outstanding	6 years 7 months 6 days
Weighted Average Remaining Contractual Term in Years, Options vested	4 years 6 months
Weighted Average Remaining Contractual Term in Years, Options unvested	8 years 2 months 12 days
Aggregate Intrinsic Value, Options outstanding as of December 31, 2020 \| $	$ 5.6
Aggregate Intrinsic Value, Options vested as of December 31, 2020 \| $	5.7
Aggregate Intrinsic Value, Options unvested as of December 31, 2020 \| $	$ 0.1

Stockholders' Equity - Summar_3

Stockholders' Equity - Summary of Exercise Price (Detail) shares in Millions	12 Months Ended
	Dec. 31, 2020$ / sharesshares
$5.50 to $18.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices Minimum	$ 5.50
Range of Exercise Prices Maximum	$ 18.50
Options Outstanding Shares \| shares	0.9
Weighted Average Remaining Contractual Life	1 year 8 months 12 days
Weighted Average Exercise Price Per Share, Options Outstanding	$ 7.02
Options Exercisable Shares \| shares	0.8
Weighted Average Exercise Price Per Share, Options Exercisable	$ 6.09
$18.51 to $30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices Minimum	18.51
Range of Exercise Prices Maximum	$ 30
Options Outstanding Shares \| shares	4.4
Weighted Average Remaining Contractual Life	8 years 1 month 6 days
Weighted Average Exercise Price Per Share, Options Outstanding	$ 19.06
Options Exercisable Shares \| shares	1.1
Weighted Average Exercise Price Per Share, Options Exercisable	$ 20.41
$30.01 to $45.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices Minimum	30.01
Range of Exercise Prices Maximum	$ 45
Options Outstanding Shares \| shares	0.9
Weighted Average Remaining Contractual Life	6 years 1 month 6 days
Weighted Average Exercise Price Per Share, Options Outstanding	$ 36.45
Options Exercisable Shares \| shares	0.8
Weighted Average Exercise Price Per Share, Options Exercisable	$ 36.31
$5.50 to $45.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices Minimum	5.50
Range of Exercise Prices Maximum	$ 45
Options Outstanding Shares \| shares	6.2
Weighted Average Remaining Contractual Life	6 years 7 months 6 days
Weighted Average Exercise Price Per Share, Options Outstanding	$ 19.86
Options Exercisable Shares \| shares	2.7
Weighted Average Exercise Price Per Share, Options Exercisable	$ 21.31

Stockholders' Equity - Summar_4

Stockholders' Equity - Summary of Weighted Average Assumptions Used to Estimate Fair Value of Stock Option (Detail) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected option term (in years)	6 years 6 months	6 years
Risk-free interest rate	2.20%	2.70%
Expected volatility	40.00%	35.00%
Weighted average exercise price	$ 18.47	$ 38.34
Weighted average fair value at grant date	$ 8	$ 14.83

Stockholders' Equity - Summar_5

Stockholders' Equity - Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs) [Member] $ / shares in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested share units, Beginning balance \| shares	7.7
Shares, Granted \| shares	10.2
Shares, Vested and shares issued \| shares	(3.3)
Shares, Forfeited \| shares	(1.4)
Non-vested share units, Ending balance \| shares	13.2
Weighted Average Grant Date Fair Value Per Share, Non-vested share units, Beginning balance \| $ / shares	$ 22,300
Weighted Average Grant Date Fair Value Per Share, Granted \| $ / shares	10,490
Weighted Average Grant Date Fair Value Per Share, Vested and shares issued \| $ / shares	23,090
Weighted Average Grant Date Fair Value Per Share, Forfeited \| $ / shares	15,910
Weighted Average Grant Date Fair Value Per Share, Non-vested share units, Ending balance \| $ / shares	$ 13,620

Stockholders' Equity - Summar_6

Stockholders' Equity - Summary of Weighted Average Assumptions Used to Estimate Fair Value of PSU Activity (Detail) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.20%
Expected volatility	51.70%
Weighted average fair value at grant date	$ 4.03	$ 12.47

Stockholders' Equity - Summar_7

Stockholders' Equity - Summary of PSU Activity (Detail) - Performance Shares [Member] shares in Millions	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested share units, Beginning balance \| shares	2.7
Shares, Granted \| shares	1.6
Shares, Vested and shares issued \| shares	(2.5)
Shares, Forfeited \| shares	(0.3)
Non-vested share units, Ending balance \| shares	1.5
Weighted Average Grant Date Fair Value Per Share, Non-vested share units, Beginning balance \| $ / shares	$ 12.47
Weighted Average Grant Date Fair Value Per Share, Granted \| $ / shares	4.63
Weighted Average Grant Date Fair Value Per Share, Vested and shares issued \| $ / shares	7.29
Weighted Average Grant Date Fair Value Per Share, Forfeited \| $ / shares	12.10
Weighted Average Grant Date Fair Value Per Share, Non-vested share units, Ending balance \| $ / shares	$ 4.03

Commitments and Contingencies -

Commitments and Contingencies - Summary of Activity in Product Warranty Accrual, Included in Other Accrued Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Product warranty accrual, beginning of period	$ 61	$ 15.6	$ 16.9
Obligation assumed under ARRIS acquisition		57.4
Provision for warranty claims	30.9	18.4	6.2
Warranty claims paid	(32.4)	(30.4)	(7.4)
Foreign exchange			(0.1)
Product warranty accrual, end of period	$ 59.5	$ 61	$ 15.6

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Loss contingency liability amount	$ 27.7
Payments to settle intellectual property assertions	109
Cost of Sales [Member]
Loss Contingency Loss In Period	7.8
ARRIS [Member]
Loss contingency liability amount	$ 21.7

Industry Segments, Major Cust_3

Industry Segments, Major Customers, Related Party Transactions and Geographic Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020SegmentCustomer	Dec. 31, 2019Customer	Dec. 31, 2018Customer
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	4
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Comcast Corporation
Segment Reporting Information [Line Items]
Concentration risk percentage	11.00%	11.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Other Than Comcast [Member]
Segment Reporting Information [Line Items]
Other direct customer accounted for 10% or more	0	0
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Anixter International Inc. [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage			11.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Other Than Anixter [Member]
Segment Reporting Information [Line Items]
Other direct customer accounted for 10% or more			0
Sales Revenue, Net [Member] \| Customers Located Outside of the U.S [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	39.00%	41.00%	44.00%
Sales Revenue, Net [Member] \| Maximum [Member] \| Customer Concentration Risk [Member] \| Other Than Comcast [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%
Sales Revenue, Net [Member] \| Maximum [Member] \| Customer Concentration Risk [Member] \| Other Than Anixter [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage			10.00%
Accounts Receivable [Member] \| Customer Concentration Risk [Member] \| Other Customers [Member]
Segment Reporting Information [Line Items]
Other direct customer accounted for 10% or more	0	0
Net Assets, Geographic Area [Member] \| United States [Member]
Segment Reporting Information [Line Items]
Company's long-lived assets	62.00%	62.00%
Net Assets, Geographic Area [Member] \| Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Company's long-lived assets	15.00%	15.00%
Net Assets, Geographic Area [Member] \| Asia Pacific [Member]
Segment Reporting Information [Line Items]
Company's long-lived assets	17.00%	17.00%
Net Assets, Geographic Area [Member] \| Caribbean and Latin America [Member]
Segment Reporting Information [Line Items]
Company's long-lived assets	6.00%	6.00%

Industry Segments, Major Cust_4

Industry Segments, Major Customers, Related Party Transactions and Geographic Information - Summary of Financial Information by Reportable Segment (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 13,576.8	$ 14,431.6
Cash and cash equivalents	521.9	598.2	$ 458.2	$ 454
Deferred income tax assets	288.1	103.1
Operating Segments
Segment Reporting Information [Line Items]
Total assets	12,766.8	13,730.3
Operating Segments \| Broadband [Member]
Segment Reporting Information [Line Items]
Total assets	6,451.6	6,681.1
Operating Segments \| Home [Member]
Segment Reporting Information [Line Items]
Total assets	1,698.5	2,178.7
Operating Segments \| OWN [Member]
Segment Reporting Information [Line Items]
Total assets	1,264.4	1,394.1
Operating Segments \| VCN [Member]
Segment Reporting Information [Line Items]
Total assets	3,352.3	3,476.4
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Cash and cash equivalents	521.9	598.2
Deferred income tax assets	$ 288.1	$ 103.1

Industry Segments, Major Cust_5

Industry Segments, Major Customers, Related Party Transactions and Geographic Information - Summary of Net Sales, Adjusted EBITDA, Depreciation Expense and Additions to PP&E by Reportable Segment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 8,435.9	$ 8,345.1	$ 4,568.5
Total segment adjusted EBITDA	1,215.2	1,297.5	913.6
Amortization of intangible assets	(630.5)	(593.2)	(264.6)
Restructuring costs, net	(88.4)	(87.7)	(44)
Equity-based compensation	(115)	(90.8)	(44.9)
Asset impairments	(206.7)	(376.1)	(15)
Transaction and integration costs	(24.9)	(195.3)	(19.5)
Acquisition accounting adjustments	(20.6)	(264.2)
Patent claims and litigation settlements	(16.3)	(55)
Executive severance	(6.3)
Depreciation	(158.3)	(143.7)	(75.6)
Consolidated operating income (loss)	(51.8)	(508.5)	450
Additions to property, plant and equipment	121.2	104.1	82.3
Broadband [Member]
Segment Reporting Information [Line Items]
Net sales	2,895.7	2,363.8	1,448.8
Total segment adjusted EBITDA	640.5	473.3	309.4
Depreciation	(59.2)	(55.6)	(29.3)
Additions to property, plant and equipment	55.2	42.5	49
Home [Member]
Segment Reporting Information [Line Items]
Net sales	2,360	2,539
Total segment adjusted EBITDA	116.2	193.7
Depreciation	(34.3)	(30.2)
Additions to property, plant and equipment	19	6.5
OWN [Member]
Segment Reporting Information [Line Items]
Net sales	1,243.7	1,475	1,490.5
Total segment adjusted EBITDA	278.5	361.2	323.6
Restructuring costs, net	(15.7)	(6.9)	(17.1)
Depreciation	(17)	(17.5)	(17.4)
Additions to property, plant and equipment	15.9	16.7	19.7
VCN [Member]
Segment Reporting Information [Line Items]
Net sales	1,936.5	1,967.3	1,629.2
Total segment adjusted EBITDA	180	269.3	280.6
Restructuring costs, net	(24.9)	(20.7)	(15.2)
Depreciation	(47.8)	(40.4)	(28.9)
Additions to property, plant and equipment	$ 31.1	$ 38.4	$ 13.6

Industry Segments, Major Cust_6

Industry Segments, Major Customers, Related Party Transactions and Geographic Information - Summary of Sales by Geographic Region, Based on Destination of Product Shipments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 8,435.9	$ 8,345.1	$ 4,568.5
United States [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	5,185.3	4,923.3	2,539.2
Europe, Middle East and Africa (EMEA) [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	1,530.2	1,543.6	963
Asia Pacific (APAC) [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	797.2	919.7	735.6
Caribbean and Latin America (CALA) [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	610.3	650.7	242.9
Canada [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales	$ 312.9	$ 307.8	$ 87.8