ARRIS International 10-K 1 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2018	Jun. 30, 2017
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	ARRS
Entity Registrant Name	ARRIS INTERNATIONAL PLC
Entity Central Index Key	1,645,494
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		185,238,691
Entity Public Float			$ 5.2

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 487,573	$ 980,123
Short-term investments, at fair value	23,874	115,553
Total cash, cash equivalents and short-term investments	511,447	1,095,676
Accounts receivable (net of allowances for doubtful accounts of $10,230 in 2017 and $15,253 in 2016)	1,218,089	1,359,430
Other receivables	157,845	73,193
Inventories (net of reserves of $69,459 in 2017 and $72,596 in 2016)	825,211	551,541
Prepaid income taxes	28,351	51,476
Prepaids	26,644	21,163
Other current assets	145,953	127,593
Total current assets	2,913,540	3,280,072
Property, plant and equipment (net of accumulated depreciation of $367,954 in 2017 and $319,473 in 2016)	372,467	353,377
Goodwill	2,278,512	2,016,169
Intangible assets (net of accumulated amortization of $1,599,573 in 2017 and $1,254,360 in 2016)	1,771,362	1,677,178
Investments	71,082	72,932
Deferred income taxes	115,436	298,757
Other assets	101,858	59,877
Total assets	7,624,257	7,758,362
Current liabilities:
Accounts payable	1,206,656	1,048,904
Accrued compensation, benefits and related taxes	155,966	139,794
Accrued warranty	44,507	49,618
Deferred revenue	115,224	132,128
Current portion of long-term debt and financing lease obligation	83,559	82,734
Income taxes payable	6,244	23,133
Other accrued liabilities	321,113	357,823
Total current liabilities	1,933,269	1,834,134
Long-term debt and financing lease obligation, net of current portion	2,116,244	2,180,009
Accrued pension	42,637	52,652
Noncurrent income taxes	144,665	123,344
Deferred income taxes	68,888	223,529
Other noncurrent liabilities	134,520	117,957
Total liabilities	4,440,223	4,531,625
Stockholders' equity:
Capital in excess of par value	3,387,128	3,314,707
Accumulated deficit	(225,881)	(132,013)
Accumulated other comprehensive income	4,552	3,291
Total ARRIS International plc stockholders' equity	3,168,567	3,188,816
Stockholders' equity attributable to noncontrolling interest	15,467	37,921
Total stockholders' equity	3,184,034	3,226,737
Total liabilities and stockholders' equity	7,624,257	7,758,362
Ordinary Shares
Stockholders' equity:
Common stock	$ 2,768	$ 2,831

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) $ in Thousands, shares in Millions	Dec. 31, 2017USD ($)shares	Dec. 31, 2017£ / shares	Dec. 31, 2016USD ($)shares	Dec. 31, 2016£ / shares
Allowances for doubtful accounts	$ 10,230		$ 15,253
Reserves for inventories	69,459		72,596
Accumulated depreciation of property, plant and equipment	367,954		319,473
Accumulated amortization of intangible assets	$ 1,599,573		$ 1,254,360
Ordinary Shares
Common stock, nominal value | £ / shares		£ 0.01		£ 0.01
Common stock, shares issued | shares	185.2		190.1
Common stock, shares outstanding | shares	185.2		190.1

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales		$ 6,614,392	$ 6,829,118	$ 4,798,332
Cost of sales		4,948,153	5,121,501	3,379,409
Gross margin		1,666,239	1,707,617	1,418,923
Operating expenses:
Selling, general, and administrative expenses		475,369	454,190	417,085
Research and development expenses		539,094	584,909	534,168
Amortization of intangible assets		375,407	397,464	227,440
Impairment of goodwill and intangible assets		55,000	2,200
Integration, acquisition, restructuring and other costs		98,357	158,137	29,277
Total operating expenses		1,543,227	1,596,900	1,207,970
Operating income		123,012	110,717	210,953
Other expense (income):
Interest expense		87,088	79,817	70,936
Loss on investments		11,066	21,194	6,220
Loss (gain) on foreign currency		9,757	(13,982)	20,761
Interest income		(7,975)	(4,395)	(2,379)
Other expense (income), net		1,873	3,991	8,362
Income before income taxes		21,203	24,092	107,053
Income tax (benefit) expense		(44,921)	15,131	22,594
Consolidated net income		66,124	8,961	84,459
Net loss attributable to noncontrolling interest		(25,903)	(9,139)	(7,722)
Net income attributable to ARRIS International plc.		$ 92,027	$ 18,100	$ 92,181
Net income per ordinary share:
Basic	[1]	$ 0.49	$ 0.09	$ 0.63
Diluted	[1]	$ 0.49	$ 0.09	$ 0.62
Weighted average ordinary shares:
Basic		187,133	190,701	146,388
Diluted		189,616	192,185	149,359
[1]	Calculated based on net income attributable to shareowners of ARRIS International plc.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated net income	$ 66,124	$ 8,961	$ 84,459
Available-for-sale securities:
Unrealized gain (loss) on available-for-sale securities, net of tax of $(288), $6 and $37 in 2017, 2016 and 2015, respectively	471	(11)	(64)
Reclassification adjustments recognized in net income, net of tax of $(33), $(9) and $(100) in 2017, 2016 and 2015, respectively	54	15	172
Net change in available-for-sale	525	4	108
Derivative instruments:
Unrealized gain (loss) on derivative instruments, net of tax of $(1,797), $(472) and $4,936 in 2017, 2016 and 2015, respectively	3,790	1,631	(8,319)
Reclassification adjustments recognized in net income, net of tax of $(535), $(1,691) and $(2,791) in 2017, 2016 and 2015, respectively	1,128	5,821	4,704
Net change in derivative instruments	4,918	7,452	(3,615)
Pension obligations:
Unrealized (loss) gain on pension obligations, net of tax of $1,391, $1,425 and $(1,082) in 2017, 2016 and 2015, respectively	(2,487)	(2,934)	2,044
Reclassification adjustments recognized in net income, net of tax of $(170), $(155) and $(498) in 2017, 2016 and 2015, respectively	304	319	942
Net change in pension obligations	(2,183)	(2,615)	2,986
Cumulative translation adjustments	(2,050)	11,096	(1,078)
Other comprehensive income (loss), net of tax	1,210	15,937	(1,599)
Comprehensive income	67,334	24,898	82,860
Comprehensive loss attributable to noncontrolling interest	(25,954)	(9,127)	(7,747)
Comprehensive income attributable to ARRIS International plc	$ 93,288	$ 34,025	$ 90,607

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Unrealized (gain) loss on available-for-sale securities, tax	$ (288)	$ 6	$ 37
Reclassification adjustments recognized in net income, tax	(33)	(9)	(100)
Unrealized gain (loss) on derivative instruments, tax	(1,797)	(472)	4,936
Reclassification adjustments recognized in net income, tax	(535)	(1,691)	(2,791)
Unrealized (loss) gain on pension obligations, tax	1,391	1,425	(1,082)
Reclassification adjustments recognized in net income, tax	$ (170)	$ (155)	$ (498)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating activities:
Consolidated net income	$ 66,124	$ 8,961	$ 84,459
Depreciation	88,195	90,577	71,780
Amortization of acquired intangible assets	382,416	404,475	231,590
Amortization of deferred financing fees and debt discount	7,960	7,705	9,646
Deferred income taxes	(74,465)	(148,418)	5,418
Foreign currency remeasurement of deferred taxes	9,360	(16,356)
Stock-based compensation expense	81,557	60,049	64,218
Impairment of goodwill and intangible assets	55,000	2,200
Provision for non-cash warrants		30,159
Provision (recovery) for doubtful accounts	(566)	1,386	2,997
Loss on disposal of property, plant & equipment and other	7,063	8,706	7,776
Loss on investments and other	11,066	21,194	6,220
Excess income tax benefits from stock-based compensation plans		(20,085)	(3,997)
Changes in operating assets and liabilities, net of effect of acquisitions and dispositions:
Accounts receivable	175,930	(258,677)	(55,132)
Other receivables	(84,652)	(31,517)	(6,017)
Inventories	(224,582)	282,644	(6,685)
Accounts payable and accrued liabilities	49,988	(178,086)	15,065
Prepaids and other, net	(16,557)	97,578	(83,466)
Net cash provided by operating activities	533,837	362,495	343,872
Investing activities:
Purchases of investments	(68,493)	(141,543)	(48,566)
Sales of investments	165,301	25,931	161,824
Purchases of property, plant and equipment	(78,072)	(66,760)	(49,890)
Purchases of intangible assets	(6,422)	(5,526)	(39,340)
Proceeds from sale-leaseback transaction			24,960
Acquisition, net of cash acquired	(760,802)	(340,118)	(97,905)
Other, net	826	3,507	2,971
Net cash used in investing activities	(747,662)	(524,509)	(45,946)
Financing activities:
Proceeds from issuance of shares, net	17,469	12,885	16,189
Repurchase of shares	(196,965)	(178,035)	(24,999)
Excess income tax benefits from stock-based compensation plans		20,085	3,997
Repurchase of shares to satisfy employee minimum tax withholdings	(26,573)	(17,925)	(46,680)
Proceeds from issuance of debt	175,847	800,000
Payment of debt obligations	(244,009)	(319,750)	(53,500)
Payment of financing lease obligation	(777)	(758)	(425)
Proceeds from sale-leaseback financing transaction			58,729
Payment for account receivable financing facility		(23,546)
Payment for deferred financing fees and debt discount	(5,961)	(2,304)	(8,239)
Contribution from noncontrolling interest	3,500		54,794
Net cash (used in) provided by financing activities	(277,469)	290,652	(134)
Effect of exchange rate changes on cash and cash equivalents	(1,256)	(12,097)
Net (decrease) increase in cash and cash equivalents	(492,550)	116,541	297,792
Cash and cash equivalents at beginning of year	980,123	863,582	565,790
Cash and cash equivalents at end of year	487,573	980,123	863,582
Supplemental cash flow information:
Interest paid during the year	80,791	71,127	60,798
Income taxes paid during the year	$ 34,053	111,524	39,065
Non-cash investing and financing activities: debt assumed in acquisition		$ 263,795	$ 15,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Ordinary Shares	Capital in Excess of Par Value	Treasury Stock	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Total ARRIS International plc stockholders' equity	Non-controlling Interest
Balance at Dec. 31, 2014		$ 1,690,761	$ 1,796		$ 1,739,700	$ (306,330)	$ 266,642	$ (11,047)	$ 1,690,761
Net income (loss)		84,459					92,181		92,181	$ (7,722)
Other comprehensive income (loss), net of tax		(1,624)						(1,599)	(1,599)	(25)
Contribution from noncontrolling interest		54,794								54,794
Compensation under stock award plans		64,218			64,218				64,218
Issuance of ordinary shares and other, net		(30,578)	(6)		(30,572)				(30,578)
Repurchase of ordinary shares, net		(24,999)				(24,999)			(24,999)
Income tax benefit related to exercise of stock options		3,930			3,930				3,930
Balance at Dec. 31, 2015		1,840,961	1,790		1,777,276	(331,329)	358,823	(12,646)	1,793,914	47,047
Net income (loss)		8,961					18,100		18,100	(9,139)
Other comprehensive income (loss), net of tax		15,950						15,937	15,937	13
Compensation under stock award plans		60,049			60,049				60,049
Effect of combination on ARRIS Group			(1,439)	$ 2,173	(734)
Cancellation of treasury stock			$ (351)			$ 331,329	(330,978)
Issuance of ordinary shares for Pace combination		1,434,690		703	1,433,987				1,434,690
Issuance of ordinary shares and other, net		(2,210)		32	(2,242)				(2,210)
Provision for warrants		30,159			30,159				30,159
Repurchase of ordinary shares, net		(178,035)		(77)			(177,958)		(178,035)
Income tax benefit related to exercise of stock options		18,929			18,929				18,929
Other		(2,717)			(2,717)				(2,717)
Balance at Dec. 31, 2016		3,226,737		2,831	3,314,707		(132,013)	3,291	3,188,816	37,921
Net income (loss)		66,124					92,027		92,027	(25,903)
Other comprehensive income (loss), net of tax		1,210						1,261	1,261	(51)
Contribution from noncontrolling interest		3,500								3,500
Compensation under stock award plans		81,557			81,557				81,557
Issuance of ordinary shares and other, net		(9,103)		33	(9,136)				(9,103)
Repurchase of ordinary shares, net		(196,965)		(96)			(196,869)		(196,965)
Cumulative effect adjustment to opening balance	[1]	10,974					10,974		10,974
Balance at Dec. 31, 2017		$ 3,184,034		$ 2,768	$ 3,387,128		$ (225,881)	$ 4,552	$ 3,168,567	$ 15,467
[1]	Cumulative adjustment related to the adoption of accounting standards, see Note 3 Impact of Recently Adopted Accounting Standards of Notes to the Consolidated Financial Statements for additional information.

Organization and Basis of Prese

Organization and Basis of Presentation	12 Months Ended
	Dec. 31, 2017
Organization and Basis of Presentation	Note 1. Organization and Basis of Presentation On January 4, 2016, ARRIS Group, Inc. (“ARRIS Group”) completed its combination with Pace plc, a company incorporated in England and Wales (“Pace”). In connection with the Pace combination, (i) ARRIS International plc (the “Registrant”), a company incorporated in England and Wales, acquired all of the outstanding ordinary shares of Pace and (ii) a wholly-owned subsidiary of the Registrant was merged with and into ARRIS Group (the “Merger”), with ARRIS Group surviving the Merger as an indirect wholly-owned subsidiary of the Registrant. Under the terms of the Pace combination, (a) Pace shareholders received 132.5 pence in cash and 0.1455 ordinary shares of the Registrant for each Pace Share they held, and (b) ARRIS Group stockholders received one ordinary share of the Registrant for each share of ARRIS Group common stock they held. Following the Pace combination, ARRIS Group became an indirect wholly-owned subsidiary of the Registrant and Pace became a direct wholly-owned subsidiary of the Registrant. The ordinary shares of the Registrant trade on the NASDAQ under the symbol “ARRS.” This Annual Report on Form 10-K 12g-3(a) ARRIS International plc (together with its consolidated subsidiaries and consolidated venture, except as the context otherwise indicates, “ARRIS” or the “Company”) is a global entertainment, communications, and networking technology and solutions provider, headquartered in Suwanee, Georgia. The Company operates in three business segments, Customer Premises Equipment, Network & Cloud, and Enterprise Networks (See Note 10 Segment Information Wi-Fi set-tops, The Company has evaluated subsequent events through the date that the financial statements were issued.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies (a) Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries and consolidated venture in which the Company owns more than 50% of the outstanding voting shares of the entity. Intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP), and our reporting currency is the United States Dollar (USD). (b) Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. (c) Reclassifications Certain prior year amounts in the financial statements and notes have been reclassified to conform to the fiscal year 2017 presentation. (d) Cash, Cash Equivalents, and Investments ARRIS’s cash and cash equivalents (which are highly-liquid investments with a remaining maturity at the date of purchase of three months or less) are primarily held in demand deposit accounts and money market accounts. The Company holds investments consisting of mutual funds and debt securities classified as available-for-sale, The Company accounts for investments in companies in which it has significant influence, or ownership between 20% and 50% of the investee under the equity method of accounting. Under the equity method, the investment is originally recorded at cost and adjusted to recognize the Company’s share of net earnings or losses, any basis difference of the investee, and dividends received. Investments in which we do not exercise significant influence (generally less than a 20 percent ownership interest) are accounted for under the cost method. The Company evaluates its investments for impairment whenever events or changes in circumstances indicate that the carrying amount of such investments may not be recoverable. An investment is written down to fair value if there is evidence of a loss in value which is other than temporary. (e) Accounts Receivable and Allowance for Doubtful Accounts and Sales Returns Accounts receivable are stated at amounts owed by the customers, net of allowance for doubtful accounts, sales returns and allowances. ARRIS establishes a reserve for doubtful accounts based upon the historical experience and leading market indicators in collecting accounts receivable. A majority of the accounts receivable are from a few large cable system operators and telecommunication companies, either with investment rated debt outstanding or with substantial financial resources, and have favorable payment histories. If ARRIS was to have a collection problem with one of its major customers, it is possible the reserve will not be sufficient. ARRIS calculates the reserve for uncollectible accounts using a model that considers customer payment history, recent customer press releases, bankruptcy filings, if any, Dun & Bradstreet reports, and financial statement reviews. The calculation is reviewed by management to assess whether there needs to be an adjustment to the reserve for uncollectible accounts. The reserve is established through a charge to the provision and represents amounts of current and past due customer receivable balances of which management deems a loss to be both probable and estimable. Accounts receivable are charged to the allowance when determined to be no longer collectible. ARRIS also establishes a reserve for sales returns and allowances. The reserve is an estimate of the impact of potential returns based upon historic trends. The following table represents a summary of the changes in the reserve for allowance for doubtful accounts, and sales returns and allowances for fiscal 2017, 2016 and 2015 (in thousands): 2017 2016 2015 Balance at beginning of fiscal year $ 15,253 $ 9,975 $ 6,392 (Credit) charges to expenses (566 ) 1,386 2,997 (Write-offs) recoveries, net (4,457 ) 3,892 586 Balance at end of fiscal year $ 10,230 $ 15,253 $ 9,975 (f) Inventories Inventories are stated at the lower of cost or net realizable value. Inventory cost is determined on a first-in, first-out work-in-process (g) Revenue recognition ARRIS generates revenue from of varying activities, including the delivery of stand-alone equipment, custom design and installation services, and bundled sales arrangements inclusive of equipment, software and services. The revenue from these activities is recognized in accordance with applicable accounting guidance and their related interpretations. Revenue is recognized when all the following criteria have been met: • When persuasive evidence of an arrangement exists • Delivery has occurred • The fee is fixed or determinable • Collectability is reasonably assured Revenue is deferred if any of the above revenue recognition criteria are not met as well as when certain circumstances exist for any of our products or services, including, but not limited to: • When undelivered products or services that are essential to the functionality of the delivered product exist, revenue is deferred until such undelivered products or services are delivered. • When required acceptance has not occurred. • When trade-in trade-in trade-in trade-in. Equipment — ARRIS’s equipment deliverables typically include proprietary operating system software, which together deliver the essential functionality of its products. Therefore, ARRIS’s equipment deliverables are considered non-software Multiple Element Arrangements - To determine the estimated selling price in multiple-element arrangements, the Company first looks to establish vendor specific objective evidence (“VSOE”) of the selling price using the prices charged for a deliverable when sold separately. If VSOE of the selling price cannot be established for a deliverable, the Company looks to establish third-party evidence (“TPE”) of the selling price by evaluating the pricing of similar and interchangeable competitor products or services in stand-alone arrangements. However, as ARRIS’s products typically contain a significant element of proprietary technology and may offer substantially different features and functionality from its competitors, ARRIS has been unable to obtain comparable pricing information with respect to its competitors’ products. Therefore, the Company has not been able to obtain reliable evidence of TPE of the selling price. If neither VSOE nor TPE of the selling price can be established for a deliverable, the Company establishes best estimate selling price (“BESP”) by reviewing historical transaction information and considering several other internal factors, including discounting and margin objectives. The Company regularly reviews estimated selling price of the product offerings and maintain internal controls over the establishment and updates of these estimates. For arrangements that fall within the software revenue recognition guidance, the fee is allocated to the various elements based on VSOE of fair value. If sufficient VSOE of fair value does not exist for the allocation of revenue to all the various elements in a multiple element arrangement, all revenue from the arrangement is deferred until the earlier of the point at which such sufficient VSOE of fair value is established or all elements within the arrangement are delivered. If VSOE of fair value exists for all undelivered elements, but does not exist for one or more delivered elements, the arrangement consideration is allocated to the various elements of the arrangement using the residual method of accounting. Under the residual method, the amount of the arrangement consideration allocated to the delivered elements is equal to the total arrangement consideration less the aggregate fair value of the undelivered elements. Using this method, any potential discount on the arrangement is allocated entirely to the delivered elements, which ensures that the amount of revenue recognized at any point in time is not overstated. Under the residual method, if VSOE of fair value exists for the undelivered element, generally PCS, the fair value of the undelivered element is deferred and recognized ratably over the term of the PCS contract, and the remaining portion of the arrangement is recognized as revenue upon delivery, which generally occurs upon delivery of the product or implementation of the system. Many of ARRIS’s products are sold in combination with customer support and maintenance services, which consist of software updates and product support. Software updates provide customers with rights to unspecified software updates that ARRIS chooses to develop and to maintenance releases and patches that the Company chooses to release during the period of the support period. Product support services include telephone support, remote diagnostics, email and web access, access to on-site non-cancelable Software Sold Without Tangible Equipment — Standalone Services — Incentives — Value Added Resellers sell-in Retail — (h) Shipping and Handling Fees Shipping and handling costs for the years ended December 31, 2017, 2016, and 2015 were approximately $12.6 million, $4.3 million and $5.6 million, respectively, and are classified in cost of sales. (i) Taxes Collected from Customers and Remitted to Governmental Authorities Taxes assessed by a government authority that are both imposed on and concurrent with specific revenue transactions between us and our customers are presented on a net basis in our Consolidated Statements of Income. (j) Depreciation of Property, Plant and Equipment The Company provides for depreciation of property, plant and equipment on the straight-line basis over estimated useful lives of 10 to 40 years for buildings and improvements, 2 to 10 years for machinery and equipment, and the shorter of the term of the lease or useful life for leasehold improvements. Included in depreciation expense is the amortization of landlord funded tenant improvements which amounted to $12.1 million in 2017, $6.6 million in 2016 and $4.5 million in 2015. Depreciation expense, including amortization of capital leases, for the years ended December 31, 2017, 2016, and 2015 was approximately $88.2 million, $90.6 million, and $71.8 million, respectively. Certain events or changes in circumstances may indicate that the recoverability of the carrying amount of property, plant and equipment should be assessed, including, among others, a significant decrease in market value, a significant change in the business climate in a particular market, or a current period operating or cash flow loss combined with historical losses or projected future losses. To test for recovery, ARRIS groups assets (an “asset group”) in a manner that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. When such events or changes in circumstances are present, the Company estimates the future cash flows expected to result from the use of the asset or asset group and its eventual disposition. These estimated future cash flows are consistent with those used in internal planning. If the sum of the expected future cash flows (undiscounted and pre-tax Property, Plant and Equipment (k) Goodwill, and Other Intangible Assets Intangible assets are classified into three categories: (1) goodwill, (2) intangible assets with definite lives subject to amortization, and (3) intangible assets with indefinite lives not subject to amortization. The Company determines the useful lives of its identifiable intangible assets after considering the specific facts and circumstances related to each intangible asset. Factors the Company considers when determining useful lives include the contractual term of any agreement related to the asset, the historical performance of the asset, the Company’s long-term strategy for using the asset, any laws or other local regulations which could impact the useful life of the asset, and other economic factors, including competition and specific market conditions. Intangible assets that are deemed to have definite lives are amortized, primarily on a straight-line basis, over their useful lives, generally ranging from 1 to 13 years. Certain intangible assets are being amortized using an accelerated method, as an accelerated method best approximates the distribution of cash flows generated by the intangible assets. See Note 5 Goodwill and Other Intangible Assets Goodwill The Company performs impairment tests of goodwill at the reporting unit level, which is at or one level below the operating segments. The operating segments are primarily based on the nature of the products and services offered, which is consistent with the way management operates the business. The Customer Premises Equipment and Enterprise Networks operating segments are the same as the reporting unit. The Network & Cloud operating segment is subdivided into three reporting units which are Network Infrastructure, Cloud Services, and Cloud TV. Goodwill is assigned to the reporting unit or units that benefit from the synergies arising from each business combination. The Company evaluates goodwill for impairment annually as of October 1 st , or when an indicator of impairment exists. As of October 1, 2017, we early adopted Accounting Standards Update (“ASU”) 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment (“ASU 2017-04”). ASU 2017-04 eliminated Step 2 of the goodwill impairment test in which an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities. The standard does not change the guidance on completing Step 1 of the goodwill impairment test. In accordance with the new standard, we compare the fair value of our reporting units with the carrying amount, including goodwill. We recognize an impairment charge for the amount by which the carrying amount exceeds a reporting unit’s fair value, as applicable. The Company typically uses a weighting of income approach using discounted cash flow models and a market approach to determine the fair value of a reporting unit. The assumptions used in these models are consistent with those the Company believes hypothetical marketplace participants would use. The Company continues to have the option to perform the optional qualitative assessment of goodwill prior to completing the Step 1 process described above to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. During the fourth quarter of 2017, the Company determined the carrying amount of its Cloud TV reporting unit associated with our ActiveVideo acquisition exceeded its fair value, and as such have recorded a partial goodwill impairment of $51.2 million as of December 31, 2017, of which $17.9 million is attributable to noncontrolling interest. There was no impairment of goodwill resulting from the Company’s annual impairment testing in 2016 and 2015. Indefinite-lived intangible assets, net The Company tests intangible assets determined to have indefinite useful lives, including certain trademarks and in-process in-process in-process The Company has the option to perform a qualitative assessment of indefinite-lived intangible assets, prior to completing the impairment test described above. The Company must assess whether it is more likely than not that the fair value of the intangible asset is less than its carrying amount. If the Company concludes that this is the case, it must perform the testing described above. Otherwise, the Company does not need to perform any further assessment. During the fourth quarter of 2017, the Company recorded a $3.8 million partial impairment related to indefinite-lived tradenames acquired included as part of our Cloud TV reporting unit, of which $1.3 million is attributable to noncontrolling interest. During 2016, the Company wrote off $2.2 million of in-process There were no impairment charges related to intangible assets with indefinite-lives in 2015. Definite-lived intangible assets, net When facts and circumstances indicate that the carrying amount of definite-lived intangible assets may not be recoverable, management assesses the recoverability of the carrying amount by preparing estimates of future cash flows. These estimated future cash flows are consistent with those we use in our internal planning. To test for recovery, the Company group assets (an “asset group”) in a manner that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. If the sum of the expected future cash flows (undiscounted and pre-tax There were no impairment charges related to definite-lived intangible assets during 2017, 2016 and 2015. (l) Advertising and Sales Promotion Advertising and sales promotion costs are expensed as incurred. Advertising and sales promotion expense was approximately $17.5 million, $19.6 million, and $16.8 million for the years ended December 31, 2017, 2016 and 2015, respectively. (m) Research and Development Research and development (“R&D”) costs are expensed as incurred. The expenditures include compensation costs, materials, other direct expenses, and an allocation of information technology, telecommunications, and facilities costs. (n) Warranty ARRIS provides warranties of various lengths to customers based on the specific product and the terms of individual agreements. For further discussion, see Note 9 Guarantees (o) Income Taxes ARRIS uses the liability method of accounting for income taxes, which requires recognition of temporary differences between financial statement and income tax bases of assets and liabilities, measured by enacted tax rates. If necessary, the measurement of deferred tax assets is reduced by the amount of any tax benefits that are not expected to be realized based on available evidence. ARRIS reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense. See Note 18 Income Taxes (p) Foreign Currency A significant portion of the Company’s products are manufactured or assembled in Brazil, China, Mexico and Taiwan, and we have research and development centers in Canada, China, France, India, Ireland, Israel, Singapore, Sweden, Taiwan and United Kingdom. Sales into international markets have been and are expected in the future to be an important part of the Company’s business. These foreign operations are subject to the usual risks inherent in conducting business abroad, including risks with respect to currency exchange rates, economic and political destabilization, restrictive actions and taxation by foreign governments, nationalization, the laws and policies of the United States affecting trade, foreign investment and loans, and foreign tax laws. The financial position and results of operations of certain of the Company’s international subsidiaries are measured using the local currency as the functional currency. Revenues and expenses of these subsidiaries are translated into U.S. dollars at average exchange rates prevailing during the period. Assets and liabilities of these subsidiaries are translated at the exchange rates as of the balance sheet date. Translation gains and losses are recorded in accumulated other comprehensive income. ARRIS has certain international customers who are billed in their local currency and certain international operations that procure in U.S. dollars. ARRIS also has certain predictable expenditures for international operations in local currency. Additionally, certain intercompany transactions are denominated in foreign currencies and subject to revaluation. The Company enters into forward or currency option contracts based on a percentage of expected foreign currency exposures. The percentage can vary, based on the predictability of the exposures denominated in the foreign currency. See Note 8 Derivative Instruments and Hedging Activities (q) Stock-Based Compensation See Note 19 Stock-Based Compensation (r) Concentrations of Credit Risk Financial instruments that potentially subject ARRIS to concentrations of credit risk consist principally of cash, cash equivalents and short-term investments, accounts receivable and derivatives. ARRIS places its temporary cash investments with high credit quality financial institutions. Concentrations with respect to accounts receivable occur as the Company sells primarily to large, well- established companies, including companies outside of the United States. The Company’s credit policy generally does not require collateral from its customers. ARRIS closely monitors extensions of credit to other parties and, where necessary, utilizes common financial instruments to mitigate risk or requires cash on delivery terms. Overall financial strategies and the effect of using a hedge are reviewed periodically. As of December 31, 2017, two customers represented 19% and 14% of total accounts receivable. As of December 31, 2016, three customers represented 20%, 17% and 14% of total accounts receivable. (s) Fair Value The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments: • Cash, cash equivalents, and short-term investments: The carrying amounts reported in the consolidated balance sheets for cash, cash equivalents, and short-term investments approximate their fair values. • Accounts receivable and accounts payable: The carrying amounts reported in the balance sheet for accounts receivable and accounts payable approximate their fair values. • Marketable securities: The fair values for trading and available-for-sale • Non-marketable Non-marketable • Senior secured credit facilities: Comprised of term loans and a revolving credit facility of which the outstanding principal amount approximates fair value • Derivative instruments: The carrying amounts reported in the balance sheet for derivative financial instruments reflect their estimated fair values. The Company has designated interest rate derivatives as cash flow hedges and the objective is to manage the variability of cash flows in the interest payments related to the portion of the variable-rate debt designated as being hedged. The Company’s foreign currency derivative instruments economically hedge certain risk but are not designated as hedges. The objective of these derivatives instruments is to add stability to foreign currency gains and losses recorded as other expense (income) and to manage its exposure to foreign currency movements. (t) Computer Software Internal-use The Company capitalizes costs associated with internally developed and/or purchased software systems for internal use that have reached the application development stage and meet recoverability tests. Capitalized costs include external direct costs of materials and services utilized in developing or obtaining internal-use internal-use External-use Research and development costs are charged to expense as incurred. ARRIS generally has not capitalized any such development costs because the costs incurred between the attainment of technological feasibility for the related software product through the date when the product is available for general release to customers has been insignificant. (u) Comprehensive Income (Loss) The components of comprehensive income (loss) include net income (loss), unrealized gains (losses) on available-for-sale (v) Warrants The Company has outstanding warrants with certain customers to purchase ARRIS’s ordinary shares. Vesting of the warrants is subject to certain purchase volume commitments by the customers. Under applicable accounting guidance, if the vesting of a tranche of the warrants is probable, the Company is required to mark-to-market Warrants

Impact of Recently Issued Accou

Impact of Recently Issued Accounting Standards	12 Months Ended
	Dec. 31, 2017
Impact of Recently Issued Accounting Standards	Note 3. Impact of Recently Issued Accounting Standards Adoption of new accounting standards first-in, first-out In March 2016, the FASB issued guidance, Improvements to Employee Share-Based Payment Accounting, which simplifies the accounting for share-based payment transactions. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement. In addition, the new standard includes provisions that impact the classification of awards as either equity or liabilities and the classification of excess tax benefits on the cash flow statements. ARRIS adopted this guidance in the first quarter of 2017. Upon adoption, using the modified retrospective transition method, the Company recorded a cumulative-effect adjustment for previously unrecognized excess tax benefits of $8.9 million, decreasing opening accumulated deficit. Applying the guidance prospectively, an income tax benefit of approximately ($2.6) million was recognized for the year ended December 31, 2017. Also, as a result of the adoption of this guidance, the Company made an accounting policy election to continue to estimate the number of forfeitures expected to occur and has applied the amendments in this guidance relating to classification on the statement of cash flows prospectively, as such no prior periods have been adjusted. Following adoption, the primary impact on the Consolidated Financial Statements will be the recognition of excess tax benefits in the provision for income taxes rather than additional paid-in In October 2016, the FASB issued new guidance for intra-entity transfer of assets other than inventory that requires companies to immediately recognize income tax effects of intercompany transactions in their income statements, eliminating the current exception that allows companies to defer the income tax effects of certain intercompany transactions. The new guidance will be effective for public business entities in fiscal years beginning after December 15, 2017. Early adoption is only permitted as of the beginning of an annual reporting period. ARRIS adopted this update as of January 1, 2017. Upon adoption, using the modified retrospective transition method, the Company recorded a cumulative-effect adjustment for previously recognized prepaid income taxes, decreasing opening accumulated deficit by $2.0 million and increasing non-current deferred tax assets by $4.5 million, and decreasing other current prepaid asset by $2.5 million. Applying the guidance prospectively, an income tax expense of approximately $8.0 million was recognized in the quarter ended March 31, 2017. Also as a result of the adoption of this guidance, any future inter-company sale transactions of assets other than inventory will result in either income tax expense or benefit in the period of the transaction. In January 2017, the FASB issued an accounting standard update that removes Step two of the goodwill impairment test, which requires the assessment of fair value of individual assets and liabilities of a reporting unit to measure goodwill impairments. Goodwill impairment will now be measured as the amount by which a reporting unit’s carrying amount exceeds its fair value. The accounting standard update is effective for the Company for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2020 on a prospective basis, and early adoption is permitted. ARRIS early adopted this update as of its annual impairment testing date on October 1, 2017. Upon adoption this guidance did not have any impact on the Company’s consolidated financial position and results of operations. Subsequently during the quarter ended December 31, 2017, as a result of a change in strategy for our Cloud TV reporting unit associated with our ActiveVideo acquisition, the Company expects lower future projected cash flows for the business, and as such, the Company has recorded a partial impairment of $51.2 million for the amount by which our Cloud TV reporting unit carrying amount exceeded its fair value of which $17.9 million is attributable to noncontrolling interest. Accounting standards issued but not yet effective There are two permitted transition methods under the new standard, the full retrospective method or the modified retrospective method. Under the full retrospective method, the standard would be applied to each prior reporting period presented and the cumulative effect of applying the standard would be recognized at the earliest period shown on the face of the financial statements being presented. Under the modified retrospective method, the cumulative effect of applying the standard would be recognized at the date of the initial application of the standard and the effect of the prior periods would be calculated and shown through a cumulative effect change in retained earnings. ARRIS is adopting the standard using the modified retrospective method on January 1, 2018. The Company has a cross-functional team that analyzed the impact of the standard on our revenue streams and contract portfolio to identify potential differences that would arise from applying the requirements of the new standard. To date, the Company has identified major revenue streams, performed an analysis of a sample of contracts to evaluate the impact of the standard, and are finalizing our contract analysis review and accounting policies and evaluating the new disclosure requirements. ARRIS is in the process of testing a new revenue recognition application, new business processes, and implementing new controls to support the adoption of the new standard. While the Company continues to assess all potential impacts of adopting the new guidance, based on analysis completed to date, the Company has identified certain instances where the Company will recognize revenue earlier under the new standard. For example, ARRIS will recognize revenue earlier for certain software license contracts. Likewise, the Company will recognize revenue earlier for certain arrangements with Value Added Resellers (“VARs”) currently accounted for utilizing the sell-through method. The new standard also requires an allocation of the transaction price to contract performance obligations based on their relative standalone selling prices, which could impact the amount and timing of revenue recognition depending on when each performance obligation is satisfied. The new revenue standard is not expected to have a material impact on the amount and timing of revenue recognized in the Company’s consolidated financial statements. While the process to determine the adjustment at adoption and the related controls are still in process, the Company expects to recognize a cumulative effect adjustment of $1.0 million to $10.0 million in 2018 that will reduce the accumulated deficit. The Company is currently assessing the tax impact from adoption. In February 2016, the FASB issued new guidance that will require lessees to recognize most leases on their balance sheets as a right-of-use In August 2016, the FASB issued amended guidance on the classification of certain cash receipts and payments in the statement of cash flows. The primary purpose of the amended guidance is to reduce the diversity in practice that has resulted from the lack of consistent principles on this topic. The amended guidance adds or clarifies guidance on eight cash flow issues, including debt prepayment or debt extinguishment costs, settlement of zero-coupon In November 2016, the FASB issued new guidance that requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period end-of-period In January 2017, the FASB issued an accounting standard update that clarifies the definition of a business to help companies evaluate whether acquisition or disposal transactions should be accounted for as asset groups or as businesses. The accounting standard update will be effective for the Company beginning in the first quarter of fiscal 2019 on a prospective basis. The impact of this accounting standard update will be facts and circumstances dependent, but the Company expects, that in some situations, transactions that were previously accounted for as business combinations or disposal transactions will be accounted for as asset purchases or asset sales under the accounting standard update. In March 2017, the FASB issued an accounting standard update that requires entities to disaggregate the service cost component from the other components of net periodic benefit costs and present it with other current compensation costs for related employees in the income statement, and present the other components elsewhere in the income statement and outside of income from operations if that subtotal is presented. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable. The accounting standard update will be effective for the Company in the first quarter of fiscal 2018. Early adoption is permitted. See Note 20 Employee Benefit Plans In May 2017, the FASB issued an accounting standard which amends the scope of modification accounting for share-based payment arrangements. The standard provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. The accounting standard will be applied prospectively to awards modified on or after the effective date. It will be effective for interim and annual periods beginning after December 15, 2017 (January 1, 2018 for the Company). Early adoption is permitted. The Company is currently assessing the potential impact of the adoption of this standard on its Consolidated Financial Statements. In August 2017, the FASB issued an accounting standard which eliminates the requirement to separately measure and report hedge ineffectiveness and requires companies to recognize all elements of hedge accounting that impact earnings in the same income statement line item where the hedged item resides. The standard includes new alternatives for measuring the hedged item for fair value hedges of interest rate risk and eases the requirements for effectiveness testing, hedge documentation and applying the critical terms match method. Finally, the standard introduces new alternatives that permit companies to reduce the risk of material error if the shortcut method is misapplied. The accounting standard is effective beginning January 1, 2019 and is required to be applied prospectively. The Company is currently assessing the potential impact of the adoption of this standard on its Consolidated Financial Statements.

Business Acquisitions

Business Acquisitions	12 Months Ended
	Dec. 31, 2017
Business Acquisitions	Note 4. Business Acquisitions Acquisition of Ruckus Wireless and ICX Switch business On December 1, 2017, ARRIS completed the acquisition of Ruckus Wireless and ICX Switch business (“Ruckus Networks”). The total cash paid was approximately $761.0 million (net of estimated adjustments for working capital and noncash settlement of pre-existing With this acquisition, ARRIS expands its leadership in converged wired and wireless networking technologies beyond the home into the education, public venue, enterprise, hospitality, and multi-dwelling unit markets. The preliminary estimated goodwill of $318.0 million arising from the acquisition is attributable to the strategic opportunities and synergies that are expected to arise from the acquisition of Ruckus Networks and the workforce of the acquired business. Goodwill has been preliminarily assigned to our new Enterprise Networks reporting unit as of December 31, 2017. The Company will finalize the assignment during the measurement period. Goodwill is not expected to be deductible for income tax purposes. The following table summarizes the fair value of consideration transferred for Ruckus Networks (in thousands): Cash consideration $ 779,743 Estimated working capital adjustments (16,371 ) Non-cash (1) (2,359 ) Total consideration transferred $ 761,013 (1) Non-cash Total consideration excludes $61.5 million paid to Broadcom for the cash settlement of stock-based awards for which vesting was accelerated as contemplated in the purchase agreement. This was expensed in the fourth quarter of 2017. The following is a summary of the estimated fair values of the net assets acquired (in thousands): Amounts Recognized Total estimated consideration transferred $ 761,013 Cash and cash equivalents 18,958 Accounts receivables 32,940 Inventories 48,897 Prepaids and other 4,836 Property, plant & equipment 33,500 Intangible assets 472,500 Other assets 39,528 Accounts payable and accrued liabilities (17,216 ) Other current liabilities (9,666 ) Deferred revenue (47,718 ) Noncurrent deferred income tax liabilities, net (92,233 ) Other noncurrent liabilities (41,347 ) Net assets acquired 442,979 Goodwill $ 318,034 The acquisition was accounted for using the acquisition method of accounting, which requires, among other things, that the assets acquired and liabilities assumed be recognized at their acquisition date fair values, with any excess of the consideration transferred over the estimated fair values of the identifiable net assets acquired recorded as goodwill. The accounting for the business combination is based on currently available information and is considered preliminary. The Company has not received a final valuation report from the independent valuation expert for acquired property, plant and equipment and intangible assets. In addition, the Company is still gathering information about income taxes and deferred income tax assets and liabilities, accounts receivables, inventories, deferred revenues, warranty obligations, other assets and accrued liabilities based on facts that existed as of the date of the acquisition. The final accounting for the business combination may differ materially from that presented in these unaudited consolidated financial statements. The $472.5 million of acquired intangible assets are as follows (in thousands): Preliminary Estimated Weighted Technology and patents $ 265,000 6.8 Customer contracts and relationships 100,000 7.0 In-process 50,000 indefinite Trademarks and tradenames 22,500 10.0 Backlog 35,000 0.5 Total estimated fair value of intangible assets $ 472,500 The fair value of trade accounts receivable is $32.9 million with the gross contractual amount being $33.8 million. The Company expects $0.9 million to be uncollectible. The Company incurred acquisition related costs of $74.5 million during 2017, of which $61.5 million relates to the cash settlement of equity awards held by transferring employees. This amount was expensed by the Company as incurred and is included in the Consolidated Statement of Operations in the line item titled “Integration, acquisition, restructuring and other costs”. The Ruckus Networks business contributed revenues of approximately $45.7 million to our consolidated results from the date of acquisition through December 31, 2017. Acquisition of Pace On January 4, 2016, ARRIS completed its acquisition of Pace for approximately $2,074 million, including $638.8 million in cash and issuance of 47.7 million ordinary shares of ARRIS International plc (formerly ARRIS International Limited) and $0.3 million of non-cash The Company completed the accounting for the business combination during the fourth quarter of 2016.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets	Note 5. Goodwill and Intangible Assets The changes in the carrying amount of goodwill for the three years ended December 31, 2017 are as follows (in thousands): CPE N & C Enterprise Total Goodwill 682,582 710,037 — $ 1,392,619 Accumulated impairment losses — (378,656 ) — (378,656 ) Balance as of December 31, 2015 $ 682,582 $ 331,381 $ — $ 1,013,963 Changes in year 2016: Goodwill acquired (disposed), net 698,106 291,331 — 989,437 Currency translation 10,483 (60 ) — 10,423 Other — 2,346 — 2,346 Balance as of December 31, 2016 $ 1,391,171 $ 624,998 $ — $ 2,016,169 Goodwill 1,391,171 1,003,654 — 2,394,825 Accumulated impairment losses — (378,656 ) — (378,656 ) Balance as of December 31, 2016 $ 1,391,171 $ 624,998 $ — $ 2,016,169 Changes in year 2017: Goodwill acquired, net — — 318,034 318,034 Impairment — (51,200 ) — (51,200 ) Other (4,491 ) — — (4,491 ) Balance as of December 31, 2017 $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512 Goodwill 1,386,680 1,003,654 318,034 2,708,368 Accumulated impairment losses — (429,856 ) — (429,856 ) Balance as of December 31, 2017 $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512 During 2017, the Company recorded preliminary estimated goodwill of $318.0 million related to the Ruckus Network acquisition. In addition, during the quarter ended December 31, 2017, as a result of a change in strategy for our Cloud TV reporting unit associated with our Active Video acquisition, the Company expects lower future projected cash flows for the business, and as such, the Company has recorded a partial impairment of $51.2 million for the amount by which the Cloud TV reporting unit carrying amount exceeded its fair value of which $17.9 million is attributable to noncontrolling interest. The partial impairment was included in impairment of goodwill and intangible assets on the Consolidated Statements of Income. During 2016, the Company recorded $989.5 million of goodwill related to the Pace combination, and disposed of $(0.1) million of goodwill related to a business divestiture. Intangible Assets The gross carrying amount and accumulated amortization of the Company’s intangible assets as of December 31, 2017 and December 31, 2016 are as follows (in thousands): December 31, 2017 December 31, 2016 Gross Accumulated Net Book Gross Accumulated Net Book Definite-lived intangible assets Customer relationships $ 1,672,470 $ 780,655 $ 891,815 $ 1,572,947 $ 624,719 $ 948,228 Developed technology, patents & licenses 1,521,893 771,200 750,693 1,248,719 571,808 676,911 Trademarks, trade and domain names 87,472 41,885 45,587 83,472 41,433 42,039 Backlog 35,000 5,833 29,167 16,400 16,400 — Sub-total $ 3,316,835 $ 1,599,573 $ 1,717,262 $ 2,921,538 $ 1,254,360 $ 1,667,178 Indefinite-lived intangible assets Trademarks and trade names — — — 5,900 — 5,900 In-process 54,100 — 54,100 4,100 — 4,100 Sub-total 54,100 — 54,100 10,000 — 10,000 Total $ 3,370,935 $ 1,599,573 $ 1,771,362 $ 2,931,538 $ 1,254,360 $ 1,677,178 During 2017, the Company recorded $472.5 million of intangible assets (other than goodwill) associated with the Ruckus Networks acquisition, see Note 4 Business Acquisitions of Notes to the Consolidated Financial Statements for further discussion. Due to lower projected cashflows of its Cloud TV reporting unit, the Company recorded a $3.8 million partial impairment of indefinite-lived trademarks and tradenames, determined using a “relief from royalty income” approach. The partial impairment was included in impairment of goodwill and intangible assets on the Consolidated Statements of Income. The remaining carrying amount was reclassified as a definite-lived intangible asset. Certain fully amortized intangible assets have been eliminated from both the gross and accumulated amortization amounts. During 2016, the Company recorded $1,258.7 million of intangible assets (other than goodwill) associated with the Pace combination, along with $5.4 million related to acquired technology licenses and $8.3 million for foreign currency translation. In addition, in-process Amortization expense is reported in the Consolidated Statements of Income within cost of goods sold and operating expenses. The following table presents the amortization of intangible assets (in thousands): Years Ended December 31, 2017 2016 2015 Cost of sales $ 3,174 $ 2,963 $ 670 Selling, general & administrative expense 3,835 4,048 3,480 Amortization of acquired intangible assets 375,407 397,464 227,440 Total $ 382,416 $ 404,475 $ 231,590 The estimated total amortization expense for finite-lived intangibles for each of the next five fiscal years is as follows (in thousands): 2018 $ 402,005 2019 326,807 2020 315,077 2021 180,290 2022 146,499 Thereafter 344,484

Investments

Investments	12 Months Ended
	Dec. 31, 2017
Investments	Note 6. Investments ARRIS’s investments consisted of the following (in thousands): As of December 31, As of December 31, Current Assets: Available-for-sale $ 23,874 $ 115,553 Noncurrent Assets: Available-for-sale 5,718 15,391 Equity method investments 22,021 22,688 Cost method investments 10,092 6,841 Other investments 33,251 28,012 Total classified as non-current 71,082 72,932 Total $ 94,956 $ 188,485 Available-for-sale available-for-sale available-for-sale available-for-sale The amortized costs and fair value of available-for-sale December 31, 2017 December 31, 2016 Amortized Gross Gross Fair Amortized Gross Gross Fair Certificates of deposit (non-U.S.) $ 12,809 $ — $ — $ 12,809 $ 87,372 $ — $ — $ 87,372 Corporate bonds 11,003 86 (24 ) 11,065 34,175 35 (77 ) 34,133 Short-term bond fund — — — — 5,046 69 (69 ) 5,046 Corporate obligations 13 — — 13 3 — — 3 Money markets 38 — — 38 54 — — 54 Mutual funds 65 14 — 79 94 28 (21 ) 101 Other investments 4,941 744 (97 ) 5,588 4,192 530 (487 ) 4,235 Total $ 28,869 $ 844 $ (121 ) $ 29,592 $ 130,936 $ 662 $ (654 ) $ 130,944 The following table represents the breakdown of the available-for-sale December 31, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Certificates of deposit (non-U.S.) $ 12,809 $ — $ — $ — $ 12,809 $ — Corporate bonds 11,065 (24 ) — — 11,065 (24 ) Corporate obligations 13 — — — 13 — Money markets 38 — — — 38 — Mutual funds 79 — — — 79 — Other investments 5,588 (97 ) — — 5,588 (97 ) Total $ 29,592 $ (121 ) $ — $ — $ 29,592 $ (121 ) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Certificates of deposit (non-U.S.) $ 87,372 $ — $ — $ — $ 87,372 $ — Corporate bonds 34,133 (77 ) — — 34,133 (77 ) Short-term bond fund 5,046 (69 ) — — 5,046 (69 ) Corporate obligations 3 — — — 3 — Money markets 54 — — — 54 — Mutual funds 101 (21 ) — — 101 (21 ) Other investments 4,235 (487 ) — — 4,235 (487 ) Total $ 130,944 $ (654 ) $ — $ — $ 130,944 $ (654 ) As of December 31, 2017, for fixed income securities that were in unrealized loss positions, the Company has determined that (i) it does not have the intent to sell any of these investments, and (ii) it is not more likely than not that it will be required to sell any of these investments before recovery of the entire amortized cost basis. The sale and/or maturity of available-for-sale Years Ended December 31, 2017 2016 2015 Proceeds from sales $ 165,301 $ 25,932 $ 157,965 Gross gains 16 33 305 Gross losses — — (452 ) The contractual maturities of the Company’s available-for-sale December 31, 2017 Amortized Cost Fair Value Within 1 year $ 23,812 $ 23,874 After 1 year through 5 years — — After 5 years through 10 years — — After 10 years 5,057 5,718 Total $ 28,869 $ 29,592 Equity method investments The following table summarizes the ownership structure and ownership percentage of the non-consolidated Name of Investee Ownership Structure % Ownership MPEG LA Limited Liability Company 8.4% Music Choice Limited Liability Partnership 18.2% Conditional Access Licensing (“CAL”) Limited Liability Company 49.0% Combined Conditional Access Development (“CCAD”) Limited Liability Company 50.0% ARRIS owns investments in two limited liability corporations whereby the investees were determined to be variable interest entities and ARRIS is not the primary beneficiary, as ARRIS does not have the power to direct the activities of the investee that most significantly impact its economic performance. The limited liability corporations are a licensing and a research and development company. The purpose of the limited liability corporations is to develop, deploy, license, support, and to gain market acceptance for certain technologies that reside in a cable plant or in a cable device. Subject to agreement on annual statements of work, the Company has provided to one of the ventures, engineering services per year approximating 20% to 30% of the approved venture budget. During 2017, the Company made funding contributions to the investment of $15.6 million. No further funding is planned for 2018 and beyond. Cost method investments Other investments Other-Than-Temporary Investment Impairments — For the year ended December 31, 2017, ARRIS concluded that one private company had indicators of impairment, as the cost basis exceeded the fair value of the investment, resulting in other-than-temporary impairment charge of $2.8 million. For the year ended December 31, 2016, the Company concluded that two private companies had indicators of impairment, as the cost basis exceeded the fair value of the investments, resulting in other-than-temporary impairment charges of $12.3 million. These charges are reflected in the Consolidated Statements of Income. Classification of securities as current or non-current non-current.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Measurements	Note 7. Fair Value Measurements Fair value is based on the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. U.S GAAP establishes a fair value hierarchy that is based on the extent and level of judgment used to estimate the fair value of assets and liabilities. In order to increase consistency and comparability in fair value measurements, the FASB has established a fair value hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three broad levels. An asset or liability’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the measurement of its fair value. The three levels of input defined by U.S. GAAP are as follows: Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities. Level 2: Observable prices that are based on inputs not quoted on active markets, but corroborated by market data. Level 3: Unobservable inputs are used when little or no market data is available. The following table presents the Company’s investment assets (excluding equity and cost method investments) and derivatives measured at fair value on a recurring basis as of December 31, 2017 and 2016 (in thousands): December 31, 2017 Level 1 Level 2 Level 3 Total Certificates of deposit (foreign) $ — $ 12,809 $ — $ 12,809 Corporate bonds — 11,065 — 11,065 Corporate obligations — 13 — 13 Money markets 38 — — 38 Mutual funds 79 — — 79 Other investments — 5,588 — 5,588 Interest rate derivatives — asset derivatives — 10,156 — 10,156 Interest rate derivatives — liability derivatives — (4,024 ) — (4,024 ) Foreign currency contracts — asset position — 405 — 405 Foreign currency contracts — liability position — (8,802 ) — (8,802 ) December 31, 2016 Level 1 Level 2 Level 3 Total Certificates of deposit (foreign) $ — $ 87,372 $ — $ 87,372 Corporate bonds — 34,133 — 34,133 Short-term bond fund 5,046 — — 5,046 Corporate obligations — 3 — 3 Money markets 54 — — 54 Mutual funds 101 — — 101 Other investments — 4,235 — 4,235 Interest rate derivatives — asset derivatives — 7,860 — 7,860 Interest rate derivatives — liability derivatives — (9,006 ) — (9,006 ) Foreign currency contracts — asset position — 7,369 — 7,369 Foreign currency contracts — liability position — (3,671 ) — (3,671 ) All of the Company’s short-term and long-term investments at December 31, 2017 are classified within Level 1 or Level 2 of the fair value hierarchy as they are valued using quoted market prices, market prices for similar securities, or alternative pricing sources with reasonable levels of price transparency. The types of instruments valued based on quoted market prices in active markets include the Company’s investment in money market funds, mutual funds and municipal bonds. Such instruments are generally classified within Level 1 of the fair value hierarchy. The types of instruments valued based on other observable inputs include corporate obligations and bonds, commercial paper and certificates of deposit. Such instruments are classified within Level 2 of the fair value hierarchy. In addition to the financial instruments included in the above table, certain nonfinancial assets and liabilities are to be measured at fair value on a nonrecurring basis in accordance with applicable authoritative guidance. This includes items such as nonfinancial assets and liabilities initially measured at fair value in a business combination (but not measured at fair value in subsequent periods) and nonfinancial long-lived asset groups measured at fair value for an impairment assessment. In general, nonfinancial assets including goodwill, other intangible assets and property and equipment are measured at fair value when there is an indication of impairment and are recorded at fair value only when any impairment is recognized. During the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in the ActiveVideo acquisition and included as part of the Cloud TV reporting unit, of which $19.3 million is attributable to the noncontrolling interest. See Note 5 Goodwill and Intangible Assets The Company believes the principal amount of the debt as of December 31, 2017 approximated the fair value because of interest-bearing rates that are adjusted periodically, analysis of recent market conditions, prevailing interest rates, and other Company specific factors. The Company has classified the debt as a Level 2 item within the fair value hierarchy.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities	Note 8. Derivative Instruments and Hedging Activities Overview ARRIS is exposed to financial market risk, primarily related to foreign currency and interest rates. These exposures are actively monitored by management. To manage the volatility relating to certain of these exposures, the Company enters into a variety of derivative financial instruments. Management’s objective is to reduce, where it is deemed appropriate to do so, fluctuations in earnings and cash flows associated with changes in foreign currency and interest rates. ARRIS’s policies and practices are to use derivative financial instruments only to the extent necessary to manage exposures. ARRIS does not hold or issue derivative financial instruments for trading or speculative purposes. The Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Derivatives also may be designated as hedges of the foreign currency exposure of a net investment in a foreign operation. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. The Company may enter into derivative contracts that are intended to economically hedge certain of its risk, even though hedge accounting does not apply or the Company elects not to apply hedge accounting. In accordance with the FASB’s fair value measurement guidance, the Company made an accounting policy election to measure the credit risk of its derivative financial instruments that are subject to master netting agreements on a net basis by counterparty portfolio. Cash flow hedges of interest rate risk The Company’s senior secured credit facilities, which are comprised of (i) a “Term Loan A Facility”, (ii) a “Term Loan A-1 B-3 Indebtedness one-month A-1 one-month The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in Accumulated Other Comprehensive Income and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2017, such derivatives were used to hedge the variable cash flows associated with debt. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the years ended December 31, 2017, 2016 and 2015 no expense has been recorded related to hedge ineffectiveness by the Company. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are made on the Company’s variable-rate debt. Over the next 12 months, the Company estimates that an additional $0.5 million may be reclassified as a decrease to interest expense. The table below presents the impact of the Company’s derivative financial instruments had on Consolidated Statement of Operations (in thousands): Location of Years Ended 2017 2016 2015 Gain (loss) Recognized in OCI on Derivatives (Effective Portion) Interest expense $ 5,587 $ 2,103 $ (13,256 ) Amounts Reclassified from Accumulated OCI into Income (Effective Portion) Interest expense 1,663 7,512 7,495 The following table indicates the location on the Consolidated Balance Sheets in which the Company’s derivative assets and liabilities designated as hedging instruments have been recognized and the related fair values of those derivatives (in thousands): Balance Sheet Location December 31, 2017 December 31, 2016 Interest rate derivatives — asset derivatives Other current assets 3,590 222 Interest rate derivatives — asset derivatives Other assets 6,566 8,043 Interest rate derivatives — liability derivatives Other accrued liabilities (3,053 ) (2,989 ) Interest rate derivatives — liability derivatives Other noncurrent liabilities (971 ) (6,421 ) Credit-risk-related contingent features Each of ARRIS’s agreements with its derivative counterparties that contain a provision where the Company could be declared in default on its derivative obligations if repayment of the underlying indebtedness is accelerated by the lender due to the Company’s default on the indebtedness. As of December 31, 2017, the fair value of derivatives in a net asset position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $6.1 million. As of December 31, 2017, the Company has not posted any collateral related to these agreements nor has it required any of its counterparties to post collateral related to these or any other agreements. Non-designated The Company has U.S. dollar functional currency subsidiaries that bill certain international customers in their local currency and foreign functional currency entities that procure in U.S. dollars. ARRIS also has certain predictable expenditures for international operations in local currency. Additionally, certain intercompany transactions are denominated in foreign currencies and subject to revaluation. To mitigate the volatility related to fluctuations in the foreign exchange rates for certain exposures, ARRIS has entered into various foreign currency contracts. As of December 31, 2017, the Company had forward contracts with notional amounts totaling 70 million euros which mature throughout 2018, forward contracts with a total notional amount of 50 million Australian dollars which mature throughout 2018, forward contracts with notional amounts totaling 65 million Canadian dollars which mature throughout 2018, forward contracts with notional amounts totaling 70.0 million British pounds which mature throughout 2018, forward contracts with notional amounts totaling 656.9 million South African rand which mature throughout 2018 and 2019. The Company’s objectives in using foreign currency derivatives are to add stability to foreign currency gains and losses recorded as other expense (income) and to manage its exposure to foreign currency movements. To accomplish this objective, the Company uses foreign currency option and foreign currency forward contracts as part of its foreign currency risk management strategy. The Company’s foreign currency derivative instruments economically hedge certain risk but are not designated as hedges, and accordingly, all changes in the fair value of the instruments are recognized as a loss (gain) on foreign currency in the Consolidated Statements of Income. The maximum time frame for ARRIS’s derivatives is currently 15 months. The following table indicates the location on the Consolidated Balance Sheets in which the Company’s derivative assets and liabilities not designated as hedging instruments have been recognized and the related fair values of those derivatives (in thousands): Balance Sheet Location December 31, 2017 December 31, 2016 Foreign exchange contracts — asset derivatives Other current assets $ 405 $ 7,369 Foreign exchange contracts — liability derivatives Other accrued liabilities (8,202 ) (3,671 ) Foreign exchange contracts — liability derivatives Other noncurrent liabilities (600 ) — The change in the fair values of ARRIS’s derivatives not designated as hedging instruments recorded in the Consolidated Statements of Income were as follows (in thousands): Statement of Operations Location 2017 2016 2015 Foreign exchange contracts Loss on foreign currency $ 25,339 $ 5,909 $ 7,597

Guarantees

Guarantees	12 Months Ended
	Dec. 31, 2017
Guarantees	Note 9. Guarantees Warranty ARRIS provides warranties of various lengths to customers based on the specific product and the terms of individual agreements. The Company provides for the estimated cost of product warranties based on historical trends, the embedded base of product in the field, failure rates, and repair costs at the time revenue is recognized. Expenses related to product defects and unusual product warranty problems are recorded in the period that the problem is identified. While the Company engages in extensive product quality programs and processes, including actively monitoring and evaluating the quality of its suppliers, the estimated warranty obligation could be affected by changes in ongoing product failure rates, material usage and service delivery costs incurred in correcting a product failure, as well as specific product failures outside of ARRIS’s baseline experience. If actual product failure rates, material usage or service delivery costs differ from estimates, revisions (which could be material) would be recorded against the warranty liability. The Company offers extended warranties and support service agreements on certain products. Revenue from these agreements is deferred at the time of the sale and recognized on a straight-line basis over the contract period. Costs of services performed under these types of contracts are charged to expense as incurred, which approximates the timing of the revenue stream. Information regarding the changes in ARRIS’s aggregate product warranty liabilities for the years ending December 31, 2017 and 2016 were as follows (in thousands): 2017 2016 Beginning balance $ 88,187 $ 49,027 Warranty reserve at acquisition 1,700 43,723 Accruals related to warranties (including changes in assumptions) 36,379 51,947 Settlements made (in cash or in kind) (50,177 ) (56,510 ) Ending balance $ 76,089 $ 88,187

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Information	Note 10. Segment Information The “management approach” has been used to present the following segment information. This approach is based upon the way the management of the Company organizes segments for making operating decisions and assessing performance. Financial information is reported on the basis that it is used internally by the chief operating decision maker (“CODM”) for evaluating segment performance and deciding how to allocate resources to segments. The Company’s chief executive officer has been identified as the CODM. The CODM manages the Company under three segments: • Customer Premises Equipment (“CPE”) set-tops, • Network & Cloud (“N&C”) — state-of-the-art end-to-end • Enterprise Networks (“Enterprise”) — These operating segments are determined based on the nature of the products and services offered. The measures that are used to assess the reportable segment’s operating performance are sales and direct contribution. Direct contribution is defined as gross margin less direct operating expense. The “Corporate and Unallocated Costs” category of expenses include corporate sales and marketing, home office general and administrative expenses, annual bonus and equity compensation. “Corporate and Unallocated Costs” also includes corporate sales and marketing for the CPE and N&C segments. Marketing and sales expenses related to the Enterprise segment are considered a direct operating expense for that segment and are not included in the “Corporate and Unallocated Costs.” These expenses are not included in the measure of segment direct contribution and as such are reported as “Corporate and Unallocated Costs” and are included in the reconciliation to income (loss) before income taxes. A measure of assets is not applicable, as segment assets are not regularly reviewed by the CODM for evaluating performance or allocating resources. The tables below present information about the Company’s reportable segments (in thousands): 2017 2016 2015 Net sales to external customers: CPE $ 4,475,670 $ 4,747,445 $ 3,136,585 N&C 2,094,113 2,111,708 1,661,594 Enterprise 45,749 — — Other (1,140 ) (30,035 ) 153 Total 6,614,392 6,829,118 4,798,332 Direct contribution: CPE 497,986 684,744 548,840 N&C 806,355 681,608 487,166 Enterprise 6,094 — — Segment total 1,310,435 1,366,352 1,036,006 Corporate and unallocated costs (658,659 ) (697,834 ) (568,336 ) Amortization of intangible assets (375,407 ) (397,464 ) (227,440 ) Impairment of goodwill and intangible assets (55,000 ) (2,200 ) — Integration, acquisition, restructuring and other (98,357 ) (158,137 ) (29,277 ) Operating income 123,012 110,717 210,953 Interest expense 87,088 79,817 70,936 Loss on investments 11,066 21,194 6,220 Loss (gain) on foreign currency 9,757 (13,982 ) 20,761 Interest income (7,975 ) (4,395 ) (2,379 ) Other expense (income), net 1,873 3,991 8,362 Income before income taxes $ 21,203 $ 24,092 $ 107,053 For the years ended December 31, 2017, 2016 and 2015, the compositions of our corporate and unallocated costs that are reflected in the consolidated statement of operations were as follows (in thousands): 2017 2016 2015 Corporate and unallocated costs: Cost of sales $ 90,791 $ 150,588 $ 56,311 Selling, general and administrative expenses 389,753 375,747 349,993 Research and development expenses 178,115 171,499 162,032 Total $ 658,659 $ 697,834 $ 568,336 The following table summarizes the Company’s net intangible assets and goodwill by reportable segment as of December 31, 2017 and 2016 (in thousands): CPE N&C Enterprise Total December 31, 2017 Goodwill $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512 Intangible assets, net 807,314 501,998 462,050 1,771,362 December 31, 2016 Goodwill $ 1,391,171 $ 624,998 $ — $ 2,016,169 Intangible assets, net 1,064,692 612,486 — 1,677,178 The following table summarizes the Company’s revenues by products and services as of December 31, 2017, 2016 and 2015 (in thousands): 2017 2016 2015 CPE: Broadband CPE $ 1,808,600 $ 1,683,491 $ 1,452,164 Video CPE 2,667,070 3,063,954 1,684,421 Sub-total 4,475,670 4,747,445 3,136,585 Network & Cloud: Networks 1,747,936 1,789,097 1,390,283 Software and services 346,177 322,611 271,311 Sub-total 2,094,113 2,111,708 1,661,594 Enterprise Networks: Enterprise Networks 45,749 — — Other: Other (1,140 ) (30,035 ) 153 Total net sales $ 6,614,392 $ 6,829,118 $ 4,798,332 The Company’s two largest customers (including their affiliates, as applicable) are Charter and Comcast. Over the past year, certain customers’ beneficial ownership may have changed as a result of mergers and acquisitions. Therefore, the revenue for ARRIS’s customers for prior periods has been adjusted to include the affiliates under common control. A summary of sales to these customers for 2017, 2016 and 2015 is set forth below (in thousands, except percentages): Years ended December 31, 2017 2016 2015 Charter and affiliates $ 985,237 $ 1,064,408 (1) $ 960,497 % of sales 14.9 % 15.6 % 20.0 % Comcast and affiliates $ 1,479,415 $ 1,637,519 (1) $ 1,007,376 % of sales 22.4 % 24.0 % 21.0 % (1) Revenues were reduced $30.2 million in 2016, as a result of warrants held by Charter and Comcast that are intended to incent additional purchases from them. (see Note 17 Warrants ARRIS sells its products primarily in the United States. The Company’s international revenue is generated from Asia Pacific, Canada, Europe and Latin America. Sales to customers outside of United States were approximately 34.2%, 28.1% and 28.8% of total sales for the years ended December 31, 2017, 2016 and 2015, respectively. International sales for the years ended December 31, 2017, 2016 and 2015 were as follows (in thousands): For the Years Ended December 31, 2017 2016 2015 Domestic — U.S. $ 4,351,843 $ 4,909,698 $ 3,418,583 International Americas, excluding U.S. 1,080,456 982,769 880,581 Asia Pacific 374,772 291,504 142,893 EMEA 807,321 645,147 356,275 Total international $ 2,262,549 $ 1,919,420 $ 1,379,749 Total sales $ 6,614,392 $ 6,829,118 $ 4,798,332 The following table summarizes plant and equipment assets by geographic region as of December 31, 2017 and 2016 (in thousands): For the Years Ended 2017 2016 Domestic — U.S. $ 250,866 $ 220,397 International Americas, excluding U.S. 12,746 12,838 Asia Pacific 85,236 81,655 EMEA 23,619 38,487 Total international $ 121,601 $ 132,980 Total property, plant and equipment assets $ 372,467 $ 353,377

Inventories

Inventories	12 Months Ended
	Dec. 31, 2017
Inventories	Note 11. Inventories The components of inventory are as follows, net of reserves (in thousands): December 31, 2017 2016 Raw material $ 149,328 $ 86,243 Work in process 5,416 3,877 Finished goods 670,467 461,421 Total inventories, net $ 825,211 $ 551,541

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment	Note 12. Property, Plant and Equipment Property, plant and equipment, at cost, consisted of the following (in thousands): December 31, 2017 2016 Land $ 68,562 $ 68,562 Buildings and leasehold improvements 205,534 163,333 Machinery and equipment 466,325 440,955 740,421 672,850 Less: Accumulated depreciation (367,954 ) (319,473 ) Total property, plant and equipment, net $ 372,467 $ 353,377

Restructuring, Acquisition and

Restructuring, Acquisition and Integration	12 Months Ended
	Dec. 31, 2017
Restructuring, Acquisition and Integration	Note 13. Restructuring, Acquisition and Integration Restructuring The following table represents a summary of and changes to the restructuring accrual, which is primarily composed of accrued severance and other employee costs and contractual obligations that related to excess leased facilities (in thousands): Employee Contractual Write-off Total Balance at December 31, 2015 $ 3 $ 87 $ — $ 90 Restructuring charges 92,246 3,379 716 96,341 Cash payments / adjustments (64,363 ) (1,223 ) — (65,586 ) Non-cash — — (716 ) (716 ) Balance at December 31, 2016 $ 27,886 $ 2,243 $ — $ 30,129 Restructuring charges 13,346 5,742 1,842 20,930 Cash payments / adjustments (35,955 ) (4,683 ) — (40,638 ) Non-cash (898 ) — (1,842 ) (2,740 ) Balance at December 31, 2017 $ 4,379 $ 3,302 $ — $ 7,681 Employee severance and termination benefits In first quarter of 2016, ARRIS completed its acquisition of Pace. ARRIS initiated restructuring plans as a result of the acquisition that focused on the rationalization of personnel, facilities and systems across the ARRIS organization. The cost recorded during 2016 was approximately $96.3 million. The 2016 restructuring plan affected approximately 1,545 positions across the Company. The liability for the plan is expected to be settled by the first half of 2018. The amount is included in the Consolidated Statement of Operations in the line item titled “Integration, acquisition, restructuring and other costs”. Contractual obligations cease-use Write-off write-off Acquisition Acquisition expenses were approximately $74.5 million, $29.0 million and $25.8 million for the years ended December 31, 2017, 2016 and 2015, respectively. These expenses in 2017 primarily related to the acquisition of Ruckus Networks and include $61.5 million relates to the cash settlement of stock-based awards held by transferring employees, as well as banker and other fees. Integration Integration expenses were approximately $2.9 million, $24.2 million and $1.6 million for the years ended December 31, 2017, 2016 and 2015, respectively. The expense was related to outside services and other integration related activities following the Pace combination.

Lease Financing Obligation

Lease Financing Obligation	12 Months Ended
	Dec. 31, 2017
Lease Financing Obligation	Note 14. Lease Financing Obligation Sale-leaseback of San Diego Office Complex: In 2015, the Company sold its San Diego office complex consisting of land and buildings with a net book value of $71.0 million, for total consideration of $85.5 million. The Company concurrently entered into a leaseback arrangement for two buildings on the San Diego campus (“Building 1” and “Building 2”) with an initial leaseback term of ten years for Building 1 and a maximum term of one year for Building 2. The Company determined that the sale-leaseback of Building 1 did not qualify for sale-leaseback accounting due to continuing involvement that will exist for the 10-year The Company concluded that Building 2 qualified for sale-leaseback accounting with the subsequent leaseback classified as an operating lease. A loss of $5.3 million was recorded in Other expense (income), net on the Consolidated Statements of Income at the closing of the transaction in 2015. At December 31, 2017, the minimum lease payments required on the financing obligation were as follows (in thousands): 2018 $ 4,260 2019 4,388 2020 4,520 2021 4,655 2022 4,795 Thereafter through 2025 11,307 Total minimum lease payments $ 33,925

Indebtedness

Indebtedness	12 Months Ended
	Dec. 31, 2017
Indebtedness	Note 15. Indebtedness The following is a summary of indebtedness and lease financing obligations as of December 31, 2017 and 2016 (in thousands): As of December 31, 2017 As of December 31, 2016 Current liabilities: Term A loan $ 19,550 $ 49,500 Term A-1 62,500 40,000 Term B-3 5,450 — Lease finance obligation 870 775 Current obligations 88,370 90,275 Current deferred financing fees and debt discount (4,811 ) (7,541 ) 83,559 82,734 Noncurrent liabilities: Term A loan 366,562 866,250 Term A-1 1,171,875 730,000 Term B loan — 543,812 Term B-3 535,463 — Revolver — — Lease finance obligation 61,032 57,902 Noncurrent obligations 2,134,932 2,197,964 Noncurrent deferred financing fees and debt discount (18,688 ) (17,955 ) 2,116,244 2,180,009 Total $ 2,199,803 $ 2,262,743 Senior Secured Credit Facilities On December 20, 2017, the Company entered into a Fourth Amendment (the “Fourth Amendment”) to its Amended and Restated Credit Facility dated June 18, 2015, as previously amended on December 14, 2015, April 26, 2017, and October 17, 2017 (the “Credit Agreement”). The Fourth Amendment provided for a new Term B Loan facility in the principal amount of $542.3 million, the proceeds of which (along with cash on hand) were used to repay in full the existing Term B Loan facility. Under the terms of the Fourth Amendment, the maturity date of the new Term B Loan facility remains April 26, 2024, but the new Term B Loan facility has an interest rate of LIBOR (as defined in the Credit Agreement) plus a percentage ranging from 2.00% to 2.25% for Eurocurrency Loans (as defined in the Credit Agreement) or the prime rate (as determined in accordance with the Credit Agreement) plus a percentage ranging from 1.00% to 1.25% for Base Rate Loans (as defined in the Credit Agreement), in either case depending on ARRIS’s consolidated net leverage ratio. The Fourth Amendment also increased to $500 million the amount of cash that can be used to offset indebtedness in the calculation of the consolidated net leverage ratio for purposes of determining the applicable interest rate. All other material terms of the Credit Agreement remained unchanged. On October 17, 2017, the Company entered into the Third Amendment and Consent (the “Third Amendment”) to the Credit Agreement. Pursuant to the Third Amendment, ARRIS (i) incurred “Refinancing Term A Loans” of $391 million, (ii) incurred “Refinancing Term A-1 A-1 The Third Amendment extended the maturity date of the Term A Loans and the Revolving Credit Facility to October 17, 2022. Pursuant to the Third Amendment, the Company is subject to a minimum consolidated interest coverage ratio test, which is unchanged from the Credit Agreement. In addition, the Company is subject to a maximum consolidated net leverage ratio test of not more than 4.0:1.0, subject to a step-down to 3.75:1.00 commencing with the fiscal quarter ending March 31, 2019. The amount of unrestricted cash used to offset indebtedness in the calculation of the consolidated net leverage ratio was also increased from $200 million to $500 million. The interest rates under the Third Amendment were not changed. On April 26, 2017, ARRIS entered into a Second Amendment (the “Second Amendment”) to the Credit Agreement. The Second Amendment provided for a new Term B Loan facility in the principal amount of $545 million, the proceeds of which (along with cash on hand) were used to repay the existing Term B Loan facility. Under the terms of the Second Amendment, the new Term B-2 In connection with the Amendments in 2017, the Company paid and capitalized approximately $1.4 million of financing fees and $4.5 million of original issuance discount. In addition, the Company expensed approximately $4.5 million of debt issuance costs and wrote off approximately $1.3 million of existing debt issuance costs associated with certain lenders who were not party to the credit facility, which were included as interest expense in the Consolidated Statements of Income for the year ended December 31, 2017. Interest rates on borrowings under the senior secured credit facilities are set forth in the table below. Rate As of December 31, 2017 Term Loan A LIBOR + 1.75 % 3.32 % Term Loan A-1 LIBOR + 1.75 % 3.32 % Term Loan B-3 LIBOR + 2.25 % 3.82 % Revolving Credit Facility (1) LIBOR + 1.75 % Not Applicable (1) Includes unused commitment fee of 0.30% and letter of credit fee of 1.75% not reflected in interest rate above. The Credit Agreement provides for adjustments to the interest rates paid on the Term Loan A, Term Loan A-1, B-3 Borrowings under the senior secured credit facilities are secured by first priority liens on substantially all of the assets of ARRIS and certain of its present and future subsidiaries who are or become parties to, or guarantors under, the Credit Agreement governing the senior secured credit facilities. The Credit Agreement provides terms for mandatory prepayments and optional prepayments and commitment reductions. The Credit Agreement also includes events of default, which are customary for facilities of this type (with customary grace periods, as applicable), including provisions under which, upon the occurrence of an event of default, all amounts outstanding under the credit facilities may be accelerated. The Credit Agreement contains usual and customary limitations on indebtedness, liens, restricted payments, acquisitions and asset sales in the form of affirmative, negative and financial covenants, which are customary for financings of this type, including the maintenance of a minimum interest coverage ratio and a maximum leverage ratio. As of December 31, 2017, ARRIS was in compliance with all covenants under the Credit Agreement. During 2017, the Company made mandatory payments of approximately $91.7 million related to the senior secured credit facilities. Account Receivable Financing Program In connection with the Pace combination on January 4, 2016, ARRIS assumed an accounts receivable financing program which was entered into by Pace on June 30, 2015. Under this program, the Company assigned trade receivables on a revolving basis of up to $50 million to the lender and the lender advances 95% of the receivable value to the Company. The remaining 5% is remitted to ARRIS upon receipt of cash from the customer. The accounts receivable financing program was accounted for as secured borrowings and amounts outstanding were included in the current portion of long-term debt on the consolidated balance sheet. The Company paid certain transaction fees and interest of 1.23% on the outstanding balance in connection with this program. As of December 31, 2016, there is no outstanding balance under this program and the program was terminated as of June 30, 2017. Other As of December 31, 2017, the scheduled maturities of the contractual debt obligations are as follows (in thousands): 2018 $ 87,500 2019 87,500 2020 87,500 2021 87,500 2022 1,297,737 Thereafter 513,663

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share	Note 16. Earnings Per Share The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the periods indicated (in thousands, except per share data): For the Years Ended December 31, 2017 2016 2015 Basic: Net income attributable to ARRIS International plc. $ 92,027 $ 18,100 $ 92,181 Weighted average shares outstanding 187,133 190,701 146,388 Basic earnings per share $ 0.49 $ 0.09 $ 0.63 Diluted: Net income attributable to ARRIS International plc. $ 92,027 $ 18,100 $ 92,181 Weighted average shares outstanding 187,133 190,701 146,388 Net effect of dilutive shares 2,483 1,484 2,971 Total 189,616 192,185 149,359 Diluted earnings per share $ 0.49 $ 0.09 $ 0.62 Potential dilutive shares include stock options, unvested restricted and performance awards and warrants. For the year ended December 31, 2017, 2016 and 2015, approximately 1.1 million, 0.9 thousand and 6.8 million of the equity-based awards, respectively, were excluded from the computation of diluted earnings per share because their effect would have been anti-dilutive. These exclusions are made if the exercise price of these equity-based awards is in excess of the average market price of the shares for the period, or if the Company has net losses, both of which have an anti-dilutive effect. During the twelve months ended December 31, 2017, the Company issued 2.6 million shares of its ordinary shares related to the vesting of restricted stock units, as compared to 2.3 million shares for the twelve months ended December 31, 2016. The warrants have a dilutive effect in those periods in which the average market price of the shares exceeds the current effective exercise price (under the treasury stock method), and are not subject to performance conditions. During the fourth quarter of 2016, approximately 2.2 million warrants vested based on the amount of purchases of products and services by the customer from the Company. There was no vesting in 2017. The dilutive effect of these vested shares was immaterial. In connection with the Pace combination in 2016, ARRIS issued approximately 47.7 million ordinary shares as part of the purchase consideration. The fair value of the 47.7 million shares issued, $1,434.7 million, was determined based on the conversion of each of Pace’s shares and equity awards outstanding at a conversion rate of 0.1455 with a value of $30.08 at January 4, 2016, which represents the opening price of the Company’s shares at the date of Pace combination. The Company has not paid cash dividends on its stock since its inception. Any future determination to pay dividends will be at the discretion of the Board of Directors and will be dependent on then-existing conditions, including the Company’s financial condition, results of operations, capital requirements, contractual and legal restrictions, business prospects and other factors that the Board considers relevant. The Credit Agreement contains restrictions on the Company’s ability to pay dividends on its ordinary shares.

Warrants

Warrants	12 Months Ended
	Dec. 31, 2017
Warrants	Note 17. Warrants During 2016, the Company entered into two separate Warrant and Registration Rights Agreements (the “Warrants”) with certain customers pursuant to which those customers may purchase up to 14.0 million of ARRIS’s ordinary shares, (subject to adjustment in accordance with the terms of the Warrants, the “Shares”). The Warrants will vest in tranches based on the amount of purchases of products and services by the customer from the Company. At December 31, 2017, approximately 2.2 million Warrants were vested and outstanding, with a weighted average exercise price of $24.56, which vested based on the amount of purchases of products and services by the customers from the Company in 2016. The ordinary shares issuable under our outstanding Warrant program with a customer, based on achieving certain purchase levels in 2018, are between 1.0 million and 2.5 million at an exercise price for the warrants of $26.14. For Warrants, other than those issuable in 2018, the exercise price per Share was established based upon the average volume-weighted price of ARRIS’s ordinary shares on NASDAQ for the 10-day For Warrants issuable in 2018, the exercise price was set based on the volume-weighted price for the 10-day The Warrants provide for net Share settlement that, if elected by the holders, will reduce the number of Shares issued upon exercise to reflect net settlement of the exercise price. Customers’ may also request cash settlement of the Warrants upon exercise in lieu of issuing Shares, however, such cash election is at the discretion of ARRIS. The Warrants will expire by September 30, 2023. The Warrants provide for certain adjustments that may be made to the exercise price and the number of Shares issuable upon exercise due to customary anti-dilution provisions based on future corporate events. In addition, in connection with any consolidation, merger or similar extraordinary event involving the Company, the Warrants will be deemed to represent the right to receive, upon exercise, the same consideration received by the holders of the Company’s ordinary shares in connection with such transaction. Upon a change of control of ARRIS or if ARRIS materially breaches its applicable agreements with customers (and such breach is not cured pursuant to the terms of the agreements), the Warrants will immediately vest for the minimum threshold of Shares that would otherwise be issuable. ARRIS has also agreed, if requested by the holders, to register the Shares issuable upon exercise of the Warrants under the Securities Act of 1933, as amended (the “Securities Act”) and has also granted “piggyback” registration rights in the event ARRIS files a registration statement with the U.S. Securities and Exchange Commission under the Securities Act covering its equity securities, subject to the terms and conditions included in the Warrants. Because the Warrants contain performance criteria, which includes aggregate purchase levels and product mix, under which customers must achieve for the Warrants to vest, as detailed above, the final measurement date for the Warrants is the date on which the Warrants vest. Prior to the final measurement, when achievement of the performance criteria has been deemed probable, the estimated fair value of Warrants is being recorded as a reduction to net sales based on the projected number of Warrants expected to vest, the proportion of purchases by customers and its affiliates within the period relative to the aggregate purchase levels required for the Warrants to vest and the then-current fair value of the related Warrants. To the extent that projections change in the future as to the number of Warrants that will vest, as well as changes in the fair market value of the Warrants, a cumulative catch-up The fair value of the Warrants is determined using the Black-Scholes option pricing model. The assumptions utilized in the Black-Scholes model include the risk-free interest rate, expected volatility, and expected life in years. The risk-free interest rate over the expected life is equal to the prevailing U.S. Treasury note rate over the same period. Expected volatility is determined utilizing historical volatility over a period of time equal to the expected life of the warrant. Expected life is equal to the remaining contractual term of the warrant. The dividend yield is assumed to be zero since we have not historically declared dividends and do not have any plans to declare dividends in the future. For the year ended December 31, 2017 and 2016, ARRIS recorded zero and $30.2 million, respectively, as a reduction to net sales in connection with Warrants. This transaction is considered an equity contract, and is classified as such.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Taxes	Note 18. Income Taxes Income (loss) before income taxes (in thousands): Years Ended December 31, 2017 2016 2015 U.K. $ (64,177 ) $ (36,300 ) $ (5,321 ) U.S. (159,951 ) (149,605 ) 47,063 Other Foreign 245,331 209,997 65,311 $ 21,203 $ 24,092 $ 107,053 Income tax expense (benefit) consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Current — U.K. $ 667 $ 81,822 $ 559 U.S. 3,530 47,025 2,141 Other Foreign 25,347 31,552 14,476 29,544 160,399 17,176 Deferred — U.K. (22,254 ) (23,177 ) (30 ) U.S. (49,671 ) (105,735 ) 5,119 Other Foreign (2,540 ) (16,356 ) 329 (74,465 ) (145,268 ) 5,418 Income tax expense (benefit) $ (44,921 ) $ 15,131 $ 22,594 A reconciliation of the U.K. statutory income tax rate of 19.25% for 2017 and 20.00% for 2016 and the U.S. federal statutory income tax rate of 35.00% for 2015 and the effective income tax rates is as follows: Years Ended December 31, 2017 2016 2015 Statutory income tax rate 19.25 % 20.00 % 35.00 % Effects of: State income taxes, net of federal benefit 11.0 (16.6 ) 5.2 Acquired deferred tax assets — — 5.8 U.S. domestic manufacturing deduction (0.9 ) (12.0 ) — Facilitative transaction costs 54.2 22.0 — Research and development tax credits (119.7 ) (90.6 ) (25.1 ) Withholding taxes (U.K. entities) 12.4 245.5 — U.K. stamp duty — 9.4 — Subpart F income — 4.0 4.8 Changes in valuation allowance 35.1 6.0 (26.6 ) Foreign tax credits 29.5 (14.0 ) (20.7 ) Non-deductible 4.9 — 5.3 Non-U.S. — — (5.0 ) Non-U.K. 26.1 (50.9 ) — Benefit of other foreign tax regimes (170.6 ) (135.4 ) — Recapture of dual consolidated losses — — 1.1 Taiwan gain — — 34.3 Change in tax rate (105.0 ) — — Uncertain tax positions (13.1 ) 88.9 (1.7 ) Other, net 5.0 (13.5 ) 8.7 (211.85 )% 62.8 % 21.1 % On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the “Act”) was signed into law making significant changes to the Internal Revenue Code. Changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, a one-time off-shore Low-Taxed The Company was required to recognize the effect of the tax law changes in the period of enactment, such as determining the transition tax, remeasuring its U.S. deferred tax assets and liabilities as well as reassessing the realizability of its deferred tax assets. The Company has calculated its best estimate of the impact of the Act in its year end income tax provision in accordance with its understanding of the Act and guidance available as of the date of this filing and as a result has recorded ($22.5) million as an income tax benefit in the fourth quarter of 2017, the period in which the legislation was enacted. The provisional amount related to the remeasurement of certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future was ($22.3) million. The provisional amount related to the one-time On December 22, 2017, Staff Accounting Bulletin No. 118 (“SAB 118”) was issued to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Act. SAB 118 allows us to record these provisional amounts during a measurement period not to extend beyond one year of the enactment date. In accordance with SAB 118, the Company has determined that the ($22.3) million of the deferred tax benefit recorded in connection with the remeasurement of certain deferred tax assets and liabilities and the ($0.2) million of current tax benefit recorded in connection with the transition tax on the mandatory deemed repatriation of foreign earnings was a provisional amount and a reasonable estimate at December 31, 2017. Since the Act was passed late in the fourth quarter of 2017, and ongoing guidance and accounting interpretation are expected over the next 12 months, we consider the accounting for the transition tax, deferred tax re-measurements, re-measurement year-end Deferred income taxes reflect the net tax effects of temporary differences between carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of ARRIS’ net deferred income tax assets (liabilities) were as follows (in thousands): December 31, 2017 2016 Deferred income tax assets Inventory costs $ 29,453 $ 63,756 Property, plant and equipment — 2,789 Accrued employee benefits 34,472 41,246 Accrued operating expenses 24,904 42,544 Reserves 16,434 26,731 Investments 8,796 667 Loss carryforwards 91,832 67,645 Research and development and other credits 164,841 118,113 Capitalized research and development 83,224 177,594 Other 17,379 50,171 Total deferred income tax assets 471,335 591,256 Deferred income tax liabilities: Property, plant and equipment (571 ) — Other liabilities (7,190 ) (6,656 ) Goodwill and intangible assets (325,283 ) (451,600 ) Total deferred income tax liabilities (333,044 ) (458,256 ) Net deferred income tax assets 138,291 133,000 Valuation allowance (91,743 ) (57,772 ) Net deferred income tax assets $ 46,548 $ 75,228 Significant attributes of ARRIS’s deferred tax assets related to loss carryforwards and tax credits were as follows: (in thousands): 2017 2016 Expiration Net operating loss carryforwards (“NOL”): U.S. federal (1) $ 27,405 $ 30,009 2018 - 2037 Georgia 15,948 4,737 2018 - 2037 Pennsylvania 17,687 13,899 2018 - 2037 Other U.S. states 12,236 4,495 2018 - 2037 Non-U.S. 18,556 14,505 Varies (2) Total tax effected loss carryforward $ 91,832 $ 67,645 Tax credit carryforwards: U.S. federal R&D $ 103,581 $ 84,711 2018 - 2037 Other U.S. federal 5,742 3,075 2027 California R&D 34,208 13,782 Indefinite Other U.S. states R&D 21,310 16,545 2018 - 2037 Total credit carryforward $ 164,841 $ 118,113 (1) Gross of tax effect U.S. Federal operating loss carryforwards are $130.5 million for the year ended December 31, 2017 and $85.7 million for the year ended December 31, 2016. (2) Canadian NOLs expire within 16 years and all other material foreign NOLs have an indefinite carryforward life. ARRIS’ ability to use U.S. federal, state, and other foreign net operating loss carryforwards to reduce future taxable income, or to use U.S. federal and state research and development tax credit and other carryforwards to reduce future income tax liabilities, is subject to the ability to generate sufficient taxable income of an appropriate characterization in the appropriate taxing jurisdictions. In some instance the utilization is also subject to restrictions attributable to change of ownership during prior tax years. as defined by appropriate law in the relevant taxing jurisdiction. These limitations, as noted above, prevent the Company from utilizing certain deferred tax assets and were considered in establishing our valuation allowances. Significant components of ARRIS’s valuation allowance were as follows (in thousands): 2017 2016 U.S. federal R&D $ (8,578 ) $ (8,064 ) Other U.S. federal (4,241 ) (16,792 ) Georgia NOL (15,008 ) (3,464 ) Pennsylvania NOL (10,068 ) (6,596 ) Other state NOL (8,988 ) (3,265 ) California R&D (18,773 ) — Other state R&D (15,606 ) (10,438 ) Non-U.S. (10,481 ) (9,153 ) Ending balance $ (91,743 ) $ (57,772 ) A roll-forward analysis of our deferred tax asset valuation allowances is as follows (in thousands): For the Period ended December 31, 2017 2016 2015 Beginning balance $ 57,772 $ 87,788 $ 118,629 Additions 52,680 17,973 3,312 Reductions (18,709 ) (47,989 ) (34,153 ) Ending balance $ 91,743 $ 57,772 $ 87,788 As of December 31, 2017, the Company did not provide additional income taxes or other non-U.K. non-U.K. non-U.K. non-U.K. In accordance with the Tax Cuts and Jobs Act of 2017 and Staff Accounting Bulletin No. 118 (“SAB 118”), the Company provided a provisional estimate for U.S. Federal income taxes of $(0.2) million relating to certain unremitted earnings of non-U.S. non-U.S. non-U.S. year-end Tabular Reconciliation of Unrecognized Tax Benefits (in thousands) For the Period ended December 31, 2017 2016 2015 Beginning balance $ 128,053 $ 49,919 $ 48,019 Gross increases — tax positions in prior period 6,783 8,068 1,599 Gross decreases — tax positions in prior period (21,409 ) (5,700 ) (2,185 ) Gross increases — current-period tax positions 24,551 27,774 9,578 Increases from acquired businesses 39,420 60,796 — Changes related to foreign currency translation adjustment and remeasurement 1,545 (1,087 ) — Decreases relating to settlements with taxing authorities and other (686 ) (3,933 ) (6,689 ) Decreases due to lapse of statute of limitations (4,032 ) (7,784 ) (403 ) Ending balance $ 174,225 $ 128,053 $ 49,919 The Company and its subsidiaries file income tax returns in the U.S. and U.K. jurisdictions, and various state and other foreign jurisdictions. As of December 31, 2017, the Company and its subsidiaries were under income tax audit in various jurisdictions including the United Kingdom, the United States, Hong Kong and various states and other foreign countries. ARRIS does not anticipate audit adjustments in excess of its current accrual for uncertain tax positions. Liabilities related to uncertain tax positions inclusive of interest and penalties were $178.2 million and $137.2 million at December 31, 2017 and 2016, respectively. These liabilities at December 31, 2017 and 2016 were reduced by $29.6 million and $28.4 million, respectively, for offsetting benefits from the corresponding effects of potential transfer pricing adjustments, state income taxes and other unrecognized tax benefits. These offsetting benefits are recorded in other non-current Included in the net result of $148.6 million as of December 31, 2017, is $37.9 million of net acquired uncertain tax positions. This amount is fully indemnified and offset by a corresponding indemnification asset recorded in other non-current The Company reported approximately $4.0 million and $9.2 million, respectively, of interest and penalty accrual related to the anticipated payment of these potential tax liabilities as of December 31, 2017 and 2016. The Company classifies interest and penalties recognized on the liability for uncertain tax positions as income tax expense. Based on information currently available, the Company anticipates that over the next twelve-month period, statutes of limitations may close and audit settlements will occur relating to existing unrecognized tax benefits of approximately $15.6 million primarily arising from U.S. federal and state tax related items.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2017
Stock-Based Compensation	Note 19. Stock-Based Compensation ARRIS grants stock awards under its 2016 Stock Incentive Plan (“SIP”). Upon approval of the 2016 SIP, all shares available for grant under the Company’s other existing stock incentive plans were no longer available. The Board of Directors approved the SIP and the prior plans to facilitate the retention and continued motivation of key employees, consultants and directors, and to align more closely their interests with those of the Company and its stockholders. Awards under the SIP may be in the form of stock options, stock grants, stock units, restricted stock, stock appreciation rights, performance shares and units, and dividend equivalent rights. A total of 31,215,000 shares of the Company’s shares may be issued pursuant to the SIP. The SIP has been designed to allow for flexibility in the form of awards; however, awards denominated in ordinary shares other than stock options and stock appreciation rights will be counted against the SIP limit as 1.87 shares for every one share covered by such an award. The vesting requirements for issuance under the SIP may vary; however, awards generally are required to have a minimum three-year vesting period or term. Restricted Stock (Non-Performance) ARRIS grants restricted stock units to certain employees and its non-employee In connection with the Pace combination, ARRIS accelerated the vesting of the time-based restricted shares that otherwise were scheduled to vest in 2016 for all of its executive officers and additional acceleration of time-based restricted shares for two executives that reached retirement age eligibility that otherwise would vest in 2017, 2018 and 2019. The following table summarizes ARRIS’s unvested restricted stock unit (excluding performance-related) transactions during the year ending December 31, 2017: Ordinary Shares Weighted Average Fair Value Unvested at December 31, 2016 6,495,049 $ 24.04 Granted 3,793,925 27.54 Vested (2,571,398 ) 22.98 Forfeited (357,232 ) 24.77 Unvested at December 31, 2017 7,360,344 26.18 Restricted Shares Units — Subject to Comparative Market Performance ARRIS grants to certain employees restricted shares units, in which the number of shares to be issued is dependent upon the Company’s total shareholder return as compared to the shareholder return of the NASDAQ composite over a three-year period. The number of shares which could potentially be issued ranges from zero to 200% of the target award. For the awards granted in 2015, the three-year measurement period ended on December 31, 2017. The Company’s total shareholder return underperformed the NASDAQ composite over the three-year period, therefore resulted in zero achievement of the target award. The remaining grants outstanding that are subject to market performance are 672,530 shares at target; at 200% performance 1,345,060 would be issued. Compensation expense is recognized on a straight-line basis over the three-year measurement period and is based upon the fair market value of the shares expected to vest. The fair value of the restricted share units is estimated on the date of grant using a Monte Carlo Simulation model. Market Performance Weighted Average Grant Date Fair Value Unvested at December 31, 2016 1,640,410 $ 29.52 Granted 524,350 24.13 Vested (211,689 ) 41.12 Performance adjustment (608,011 ) 35.85 Unvested at December 31, 2017 1,345,060 22.73 The total fair value of restricted share units, including both non-performance Employee Stock Purchase Plan (“ESPP”) ARRIS offers an ESPP to certain employees. The plan complies with Section 423 of the U.S. Internal Revenue Code, which provides that employees will not be immediately taxed on the difference between the market price of the stock and a discounted purchase price if it meets certain requirements. Participants can request that up to 10% of their base compensation be applied toward the purchase of ARRIS ordinary shares under ARRIS’s ESPP. Purchases by any one participant are limited to $25,000 (based upon the fair market value) in any one year. The exercise price is the lower of 85% of the fair market value of the ARRIS ordinary shares on either the first day of the purchase period or the last day of the purchase period. A plan provision which allows for the more favorable of two exercise prices is commonly referred to as a “look-back” feature. Any discount offered in excess of five percent generally will be considered compensatory and appropriately is recognized as compensation expense. Additionally, any ESPP offering a look-back feature is considered compensatory. ARRIS uses the Black-Scholes option valuation model to value shares issued under the ESPP. The valuation is comprised of two components; the 15% discount of a share of ordinary shares and 85% of a six-month Unrecognized Compensation Cost As of December 31, 2017, there was approximately $152.2 million of total unrecognized compensation cost related to unvested share-based awards granted under the Company’s incentive plans. This compensation cost is expected to be recognized over a weighted-average period of 2.8 years.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Employee Benefit Plans	Note 20. Employee Benefit Plans The Company sponsors a qualified and a non-qualified non-contributory non-U.S. The U.S. pension plan benefit formulas generally provide for payments to retired employees based upon their length of service and compensation as defined in the plans. ARRIS’s investment policy is to fund the qualified plan as required by the Employee Retirement Income Security Act of 1974 (“ERISA”) and to the extent that such contributions are tax deductible. ARRIS also provides a non-contributory No minimum funding contributions are required in 2017 under the Company’s U.S. defined benefit plan. For the year ended December 31, 2017, the Company made a voluntary minimum funding contribution of $1.4 million to its U.S defined benefit plan. The Company also made funding contributions of $1.2 million related to our non-U.S. During 2016, in an effort to reduce future premiums and administrative fees as well as to increase our funded status in connection with our U.S. pension obligation, we made a voluntary funding contribution of $5.0 million. The Company also made funding contributions of $10.9 million related to our non-U.S. The Company has established a rabbi trust to fund the pension obligations of the Executive Chairman under his Supplemental Retirement Plan including the benefit under the Company’s non-qualified non-qualified In late 2017, the Company commenced the process of terminating our U.S. defined benefit pension plan. Ultimate plan termination is subject to regulatory approval and to prevailing market conditions and other considerations. In the event approvals are received and the Company proceeds with effecting termination, settlement of the plan obligations is expected to occur in 2019. If the settlement occurs as expected in 2019, the plan’s deferred actuarial losses remaining in accumulated other comprehensive income (loss) at that time will be recognized as expense. The following table summarizes the change in projected benefit obligations, fair value of plan assets and the funded status of pension plan for the years ended December 31, 2017 and 2016 (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 45,270 $ 42,999 $ 35,706 $ 36,372 Service cost — — 664 703 Interest cost 1,733 1,751 486 614 Actuarial loss 3,868 2,024 121 81 Benefit payments (1,651 ) (1,504 ) — (1,041 ) Settlements — — (1,596 ) (1,626 ) Foreign currency — — 2,755 603 Projected benefit obligation at end of year $ 49,220 $ 45,270 $ 38,136 $ 35,706 Change in Plan Assets: Fair value of plan assets at beginning of year $ 18,510 $ 13,516 $ 19,011 $ 9,232 Actual return on plan assets 949 751 183 131 Company contributions 1,856 5,747 1,259 11,120 Expenses and benefits paid from plan assets (1,651 ) (1,504 ) — — Settlements — — (1,596 ) (1,626 ) Foreign currency — — 1,467 154 Fair value of plan assets at end of year (1) $ 19,664 $ 18,510 $ 20,324 $ 19,011 Funded Status: Funded status of plan $ (29,557 ) $ (26,760 ) $ (17,812 ) $ (16,695 ) Unrecognized actuarial loss (gain) 13,981 10,720 (1,857 ) (2,038 ) Net amount recognized $ (15,576 ) $ (16,040 ) $ (19,669 ) $ (18,733 ) (1) In addition to the U.S. pension plan assets, ARRIS has established two rabbi trusts to further fund the pension obligations of the Executive Chairman and certain executive officers of $25.4 million as of December 31, 2017 and $21.2 million as of December 31, 2016, and are included in Investments on the Consolidated Balance Sheets. Amounts recognized in the statement of financial position consist of (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Current liabilities $ (17,670 ) $ (399 ) $ — $ — Noncurrent liabilities (11,887 ) (26,361 ) (17,812 ) (16,695 ) Accumulated other comprehensive loss (income) (1) 13,981 10,720 (1,857 ) (2,038 ) Total $ (15,576 ) $ (16,040 ) $ (19,669 ) $ (18,733 ) (1) The accumulated other comprehensive income on the Consolidated Balance Sheets as of December 31, 2017 and 2016 is presented net of income tax. Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) are as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Net (gain) loss $ 3,814 $ 2,068 $ (3,203 ) $ 261 $ 225 $ 813 Amortization of net gain (loss) (552 ) (544 ) (834 ) 78 248 (529 ) Adjustments — — — — 1,849 — Foreign currency — — — — 31 — Total recognized in other (loss) comprehensive income $ 3,262 $ 1,524 $ (4,037 ) $ 339 $ 2,353 $ 284 Information for defined benefit plans with accumulated benefit obligations or projected benefit obligation in excess of plan assets as of December 31, 2017 and 2016 is as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation $ 49,220 $ 45,270 $ 29,741 $ 27,551 Fair value of plan assets 19,664 18,510 20,324 19,011 Projected benefit obligation in excess of plan assets: Projected benefit obligation 49,220 $ 45,270 38,136 35,706 Fair value of plan assets 19,664 18,510 20,324 19,011 Net periodic pension cost for 2017, 2016 and 2015 for pension and supplemental benefit plans includes the following components (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Service cost $ — $ — $ — $ 664 $ 703 $ 738 Interest cost 1,733 1,751 1,716 486 614 661 Return on assets (expected) (895 ) (795 ) (839 ) (323 ) (275 ) (176 ) Amortization of net actuarial loss(gain) (1) 552 544 834 (78 ) (70 ) 529 Settlement charge — — — — (178 ) — Adjustments — — — — (1,849 ) — Foreign currency — — — — (31 ) — Net periodic pension cost $ 1,390 $ 1,500 $ 1,711 $ 749 $ (1,086 ) $ 1,752 (1) ARRIS uses the allowable 10% corridor approach to determine the amount of gains/losses subject to amortization in pension cost. Gains/losses are amortized on a straight-line basis over the average future service of members expected to receive benefits Estimated amounts to be amortized from accumulated other comprehensive income (loss) into net periodic benefit costs in the year ending December 31, 2018 based on December 31, 2017 plan measurements are $1.0 million, consisting primarily of amortization of the net actuarial loss in the U.S. pension plans. The assumptions used to determine the benefit obligations as of December 31, 2017 and 2016 are as set forth below (in percentage): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Weighted-average assumptions used to determine benefit obligations: Discount rate 3.45 % 3.90 % 4.15 % 1.10 % 1.30 % 1.70 % Rate of compensation increase N/A N/A N/A N/A N/A N/A Weighted-average assumptions used to determine net periodic benefit costs: Discount rate 3.90 % 4.15 % 3.75 % 1.30 % 1.70 % 1.90 % Expected long-term rate of return on plan assets 5.00 % 6.00 % 6.00 % 1.40 % 1.60 % 2.00 % Rate of compensation increase (1) N/A N/A N/A 3.00 % 3.00 % 3.00 % (1) Represent an average rate for the non-U.S. The expected long-term rate of return on assets is derived using the building block approach which includes assumptions for the long-term inflation rate, real return, and equity risk premiums. No minimum funding contributions are required for 2018 for the U.S. Pension plan, however the Company may make a voluntary contribution. The Company estimates it will make funding contributions of $1.2 million in 2018 for the non-U.S. As of December 31, 2017, the expected benefit payments related to the Company’s defined benefit pension plans during the next ten years are as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2018 $ 18,890 $ 2,840 2019 1,770 2,122 2020 1,820 2,169 2021 1,920 2,273 2022 1,920 1,905 2023 — 2027 10,200 10,737 The investment strategies of the plans place a high priority on benefit security. The plans invest conservatively so as not to expose assets to depreciation in adverse markets. The plans’ strategy also places a high priority on earning a rate of return greater than the annual inflation rate along with maintaining average market results. The plan has targeted asset diversification across different asset classes and markets to take advantage of economic environments and to also act as a risk minimizer by dampening the portfolio’s volatility. The following table summarizes the weighted average pension asset allocations as December 31, 2017 and 2016: U.S. Pension Plans Target Actual 2017 2016 2017 2016 Equity securities — 30% - 40% — 30 % Debt securities — 0% - 5% — 2 % Cash and cash equivalents 80% - 100% 60% - 70% 100 % 68 % Asset allocation for the non-U.S. The following table summarizes the Company’s U.S. pension plan assets by category and by level (as described in Note 7 Fair Value Measurements December 31, 2017 Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 19,662 $ 2 $ — $ 19,664 Total $ 19,662 $ 2 $ — $ 19,664 December 31, 2016 Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ — $ 12,723 $ — $ 12,723 Equity securities (2) : U.S. large cap 1,123 — — 1,123 U.S. mid cap 1,118 — — 1,118 U.S. small cap 1,118 — — 1,118 International 1,685 — — 1,685 Fixed income securities (3) : 743 — — 743 Total $ 5,787 $ 12,723 $ — $ 18,510 (1) Cash and cash equivalents, which are used to pay benefits and administrative expenses, are held in money market and stable value fund. (2) Equity securities consist of mutual funds and the underlying investments are indexes. Investments in mutual funds are valued at the net asset value per share multiplied by the number of shares held. (3) Fixed income securities consist of bonds securities in mutual funds, and are valued at the net asset value per share multiplied by the number of shares held. Other Benefit Plans ARRIS has established defined contribution plans pursuant to the Internal Revenue Code Section 401(k) that cover all eligible U.S. employees. ARRIS contributes to these plans based upon the dollar amount of each participant’s contribution. ARRIS made matching contributions to these plans of approximately $16.5 million, $16.4 million and $16.6 million in 2017, 2016 and 2015, respectively. The Company has a deferred compensation plan that does not qualify under Section 401(k) of the Internal Revenue Code, and is available to key executives of the Company and certain other employees. Employee compensation deferrals and matching contributions are held in a rabbi trust. The total of net employee deferrals and matching contributions, which is reflected in other long-term liabilities, was $5.7 million and $4.2 million at December 31, 2017 and 2016, respectively. Total expenses included in continuing operations for the matching contributions were approximately $0.3 million and $0.2 million in 2017 and 2016, respectively. The Company previously offered a deferred compensation arrangement, which allowed certain employees to defer a portion of their earnings and defer the related income taxes. As of December 31, 2004, the plan was frozen and no further contributions are allowed. The deferred earnings are invested in a rabbi trust. The total of net employee deferral and matching contributions, which is reflected in other long-term liabilities, was $3.1 million and $3.0 million at December 31, 2017 and 2016, respectively. The Company also has a deferred retirement salary plan, which was limited to certain current or former officers. The present value of the estimated future retirement benefit payments is being accrued over the estimated service period from the date of signed agreements with the employees. The accrued balance of this plan, the majority of which is included in other long-term liabilities, were $1.5 million and $1.6 million at December 31, 2017 and 2016, respectively. Total expenses (income) included in continuing operations for the deferred retirement salary plan were approximately $0.2 million and $0.4 million for 2017 and 2016, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss)	Note 21. Accumulated Other Comprehensive Income (Loss) The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of taxes, for the year ended December 31, 2017 and 2016 (in thousands): Available-for Derivative Pension Cumulative Total Balance as of December 31, 2015 $ 133 $ (6,781 ) $ (4,195 ) $ (1,803 ) $ (12,646 ) Other comprehensive (loss) income before reclassifications (11 ) 1,631 (2,934 ) 11,096 9,782 Amounts reclassified from accumulated other comprehensive income (loss) 15 5,821 319 — 6,155 Net current-period other comprehensive income (loss) 4 7,452 (2,615 ) 11,096 15,937 Balance as of December 31, 2016 $ 137 $ 671 $ (6,810 ) $ 9,293 $ 3,291 Other comprehensive (loss) income before reclassifications 471 3,790 (2,487 ) (2,050 ) (276 ) Amounts reclassified from accumulated other comprehensive income (loss) 54 1,128 304 — 1,486 Net current-period other comprehensive income (loss) 525 4,918 (2,183 ) (2,050 ) 1,210 Balance as of December 31, 2017 $ 662 $ 5,589 $ (8,993 ) $ 7,243 $ 4,501

Repurchases of Stock

Repurchases of Stock	12 Months Ended
	Dec. 31, 2017
Repurchases of Stock	Note 22. Repurchases of Stock Upon completing the Pace combination, ARRIS International plc conducted a court-approved process in accordance with section 641(1)(b) of the U.K. Companies Act 2006, pursuant to which the Company reduced its stated share capital and thereby increased its distributable reserves or excess capital out of which ARRIS may legally pay dividends or repurchase shares. Distributable reserves are not linked to a U.S. GAAP reported amount. In 2016, the Company’s Board of Directors approved a $300 million share repurchase authorization replacing all prior programs. In early 2017, the Board authorized an additional $300 million for share repurchases. During 2016, the Company repurchased 7.4 million of its ordinary shares for $178.0 million at an average stock price of $24.09. During 2017, ARRIS repurchased 7.5 million shares of its ordinary shares at an average price of $26.12 per share, for an aggregate consideration of approximately $197.0 million. The remaining authorized amount for stock repurchases was $225.0 million as of December 31, 2017. Unless terminated earlier by a Board resolution, this new plan will expire when ARRIS has used all authorized funds for repurchase. However, U.K. law also generally prohibits a company from repurchasing its own shares through “off market purchases” without prior approval of shareholders because we are not traded on a recognized investment exchange in the U.K. This shareholder approval lasts for a maximum period of five years. Prior to and in connection with the Pace combination, we obtained approval to purchase our own shares. This authority to repurchase shares terminates in January 2021, unless otherwise reapproved by our shareholders.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies	Note 23. Commitments and Contingencies General Matters ARRIS leases office, distribution, and warehouse facilities as well as equipment under long-term leases expiring at various dates through 2023. Included in these operating leases are certain amounts related to restructuring activities; these lease payments and related sublease income are included in restructuring accruals on the consolidated balance sheets. Future minimum operating lease payments under non-cancelable Operating Leases 2018 $ 37,661 2019 31,864 2020 27,288 2021 24,502 2022 20,558 Thereafter 42,768 Less sublease income (4,674 ) Total minimum lease payments $ 179,967 Total rental expense for all operating leases amounted to approximately $26.4 million, $34.0 million and $26.9 million for the years ended December 31, 2017, 2016 and 2015, respectively. Additionally, the Company had contractual obligations of approximately $772.1 million under agreements with non-cancelable 12-month Bank Guarantees The Company has outstanding bank guarantees, of which certain amounts are collateralized by restricted cash. As of December 31, 2017, the restricted cash associated with the outstanding bank guarantee was $1.5 million which is reflected in Other Assets on the Consolidated Balance Sheets. Legal Proceedings The Company accrues a liability for legal contingencies when it believes that it is both probable that a liability has been incurred and that it can reasonably estimate the amount of the loss. The Company reviews these accruals and adjusts them to reflect ongoing negotiations, settlements, rulings, advice of legal counsel and other relevant information. To the extent new information is obtained and the Company’s views on the probable outcomes of claims, suits, assessments, investigations or legal proceedings change, changes in the Company’s accrued liabilities would be recorded in the period in which such determinations are made. Unless noted otherwise, the amount of liability is not probable or the amount cannot be reasonably estimated; and therefore, accruals have not been made. Due to the nature of the Company’s business, it is subject to patent infringement claims, including current suits against it or one or more of its wholly-owned subsidiaries, or one or more of our customers who may seek indemnification from us, alleging infringement by various Company products and services. The Company believes that it has meritorious defenses to the allegations made in its pending cases and intends to vigorously defend these lawsuits; however, it is currently unable to determine the ultimate outcome of these or similar matters. Accordingly, the Company is currently unable to reasonably estimate the possible loss or range of possible loss for any of the matters identified in Part II, Item 1 “Legal Proceedings”. The results in litigation are unpredictable and an adverse resolution of one or more of such matters not included in the estimate provided, or if losses are higher than what is currently estimated, it could have a material adverse effect on our business, financial position, results of operations or cash flows. In addition, the Company is a defendant in various litigation matters generally arising out of the normal course of business. (See Part I, Item 3 “Legal Proceedings” for additional details).

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events	Note 24. Subsequent Events In February 2018, the Company announced an agreement to sell its manufacturing facility in New Taipei City, Taiwan, along with certain manufacturing fixed assets. The aggregate consideration for the acquired assets is $81.3 million ($75.0 million for the facility and land, plus $6.3 million for the manufacturing fixed assets). As a condition of sale, the Company will indemnify the buyer for certain environmental obligations up to $7.0 million. As of December 31, 2017, the carrying amount of the facility, land, and manufacturing fixed assets was approximately $57.9 million and will be reclassified as held for sale in the first quarter of 2018. The Company expects to close the transaction in the second half of 2018. In addition, the Company expects to incur restructuring charges of approximately $15.0 million in the first quarter of 2018 for employee severance and termination benefits in connection with the sale.

Summary Quarterly Consolidated

Summary Quarterly Consolidated Financial Information (unaudited)	12 Months Ended
	Dec. 31, 2017
Summary Quarterly Consolidated Financial Information (unaudited)	Note 25. Summary Quarterly Consolidated Financial Information (unaudited) The following table summarizes ARRIS’s quarterly consolidated financial information (in thousands, except per share data): Quarters in 2017 Ended, March 31, June 30, September 30 December 31, (1)(2)(3)(4) Net sales $ 1,483,105 $ 1,664,170 $ 1,728,524 $ 1,738,593 Gross margin 337,257 403,357 431,155 494,470 Operating (loss) income (4,084 ) 55,636 84,157 (12,698 ) Net (loss) income attributable to ARRIS International plc. $ (39,098 ) $ 30,336 $ 88,320 $ 12,469 Net (loss) income per basic share $ (0.21 ) $ 0.16 $ 0.47 $ 0.07 Net (loss) income per diluted share $ (0.21 ) $ 0.16 $ 0.47 $ 0.07 Quarters in 2016 Ended March 31, June 30, September 30 December 31, (5)(6) Net sales $ 1,614,706 $ 1,730,044 $ 1,725,145 $ 1,759,223 Gross margin 384,032 444,734 442,850 436,001 Operating (loss) income (86,490 ) 33,388 91,313 72,506 Net (loss) income attributable to ARRIS International plc $ (202,573 ) $ 84,228 $ 48,162 $ 88,283 Net (loss) income per diluted share $ (1.06 ) $ 0.44 $ 0.25 $ 0.46 Net (loss) income per basic share $ (1.06 ) $ 0.44 $ 0.25 $ 0.46 Year 2017 (1) For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants. (2) In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest. (3) In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees. (4) During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition. Year 2016 (5) For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants. (6) In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4 th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4 th quarter.

Summary of Significant Accoun34

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Consolidation	(a) Consolidation The accompanying consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries and consolidated venture in which the Company owns more than 50% of the outstanding voting shares of the entity. Intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP), and our reporting currency is the United States Dollar (USD).
Use of Estimates	(b) Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Reclassifications	(c) Reclassifications Certain prior year amounts in the financial statements and notes have been reclassified to conform to the fiscal year 2017 presentation.
Cash, Cash Equivalents, and Investments	(d) Cash, Cash Equivalents, and Investments ARRIS’s cash and cash equivalents (which are highly-liquid investments with a remaining maturity at the date of purchase of three months or less) are primarily held in demand deposit accounts and money market accounts. The Company holds investments consisting of mutual funds and debt securities classified as available-for-sale, The Company accounts for investments in companies in which it has significant influence, or ownership between 20% and 50% of the investee under the equity method of accounting. Under the equity method, the investment is originally recorded at cost and adjusted to recognize the Company’s share of net earnings or losses, any basis difference of the investee, and dividends received. Investments in which we do not exercise significant influence (generally less than a 20 percent ownership interest) are accounted for under the cost method. The Company evaluates its investments for impairment whenever events or changes in circumstances indicate that the carrying amount of such investments may not be recoverable. An investment is written down to fair value if there is evidence of a loss in value which is other than temporary.
Accounts Receivable and Allowance for Doubtful Accounts and Sales Returns	(e) Accounts Receivable and Allowance for Doubtful Accounts and Sales Returns Accounts receivable are stated at amounts owed by the customers, net of allowance for doubtful accounts, sales returns and allowances. ARRIS establishes a reserve for doubtful accounts based upon the historical experience and leading market indicators in collecting accounts receivable. A majority of the accounts receivable are from a few large cable system operators and telecommunication companies, either with investment rated debt outstanding or with substantial financial resources, and have favorable payment histories. If ARRIS was to have a collection problem with one of its major customers, it is possible the reserve will not be sufficient. ARRIS calculates the reserve for uncollectible accounts using a model that considers customer payment history, recent customer press releases, bankruptcy filings, if any, Dun & Bradstreet reports, and financial statement reviews. The calculation is reviewed by management to assess whether there needs to be an adjustment to the reserve for uncollectible accounts. The reserve is established through a charge to the provision and represents amounts of current and past due customer receivable balances of which management deems a loss to be both probable and estimable. Accounts receivable are charged to the allowance when determined to be no longer collectible. ARRIS also establishes a reserve for sales returns and allowances. The reserve is an estimate of the impact of potential returns based upon historic trends. The following table represents a summary of the changes in the reserve for allowance for doubtful accounts, and sales returns and allowances for fiscal 2017, 2016 and 2015 (in thousands): 2017 2016 2015 Balance at beginning of fiscal year $ 15,253 $ 9,975 $ 6,392 (Credit) charges to expenses (566 ) 1,386 2,997 (Write-offs) recoveries, net (4,457 ) 3,892 586 Balance at end of fiscal year $ 10,230 $ 15,253 $ 9,975
Inventories	(f) Inventories Inventories are stated at the lower of cost or net realizable value. Inventory cost is determined on a first-in, first-out work-in-process
Revenue recognition	(g) Revenue recognition ARRIS generates revenue from of varying activities, including the delivery of stand-alone equipment, custom design and installation services, and bundled sales arrangements inclusive of equipment, software and services. The revenue from these activities is recognized in accordance with applicable accounting guidance and their related interpretations. Revenue is recognized when all the following criteria have been met: • When persuasive evidence of an arrangement exists • Delivery has occurred • The fee is fixed or determinable • Collectability is reasonably assured Revenue is deferred if any of the above revenue recognition criteria are not met as well as when certain circumstances exist for any of our products or services, including, but not limited to: • When undelivered products or services that are essential to the functionality of the delivered product exist, revenue is deferred until such undelivered products or services are delivered. • When required acceptance has not occurred. • When trade-in trade-in trade-in trade-in. Equipment — ARRIS’s equipment deliverables typically include proprietary operating system software, which together deliver the essential functionality of its products. Therefore, ARRIS’s equipment deliverables are considered non-software Multiple Element Arrangements - To determine the estimated selling price in multiple-element arrangements, the Company first looks to establish vendor specific objective evidence (“VSOE”) of the selling price using the prices charged for a deliverable when sold separately. If VSOE of the selling price cannot be established for a deliverable, the Company looks to establish third-party evidence (“TPE”) of the selling price by evaluating the pricing of similar and interchangeable competitor products or services in stand-alone arrangements. However, as ARRIS’s products typically contain a significant element of proprietary technology and may offer substantially different features and functionality from its competitors, ARRIS has been unable to obtain comparable pricing information with respect to its competitors’ products. Therefore, the Company has not been able to obtain reliable evidence of TPE of the selling price. If neither VSOE nor TPE of the selling price can be established for a deliverable, the Company establishes best estimate selling price (“BESP”) by reviewing historical transaction information and considering several other internal factors, including discounting and margin objectives. The Company regularly reviews estimated selling price of the product offerings and maintain internal controls over the establishment and updates of these estimates. For arrangements that fall within the software revenue recognition guidance, the fee is allocated to the various elements based on VSOE of fair value. If sufficient VSOE of fair value does not exist for the allocation of revenue to all the various elements in a multiple element arrangement, all revenue from the arrangement is deferred until the earlier of the point at which such sufficient VSOE of fair value is established or all elements within the arrangement are delivered. If VSOE of fair value exists for all undelivered elements, but does not exist for one or more delivered elements, the arrangement consideration is allocated to the various elements of the arrangement using the residual method of accounting. Under the residual method, the amount of the arrangement consideration allocated to the delivered elements is equal to the total arrangement consideration less the aggregate fair value of the undelivered elements. Using this method, any potential discount on the arrangement is allocated entirely to the delivered elements, which ensures that the amount of revenue recognized at any point in time is not overstated. Under the residual method, if VSOE of fair value exists for the undelivered element, generally PCS, the fair value of the undelivered element is deferred and recognized ratably over the term of the PCS contract, and the remaining portion of the arrangement is recognized as revenue upon delivery, which generally occurs upon delivery of the product or implementation of the system. Many of ARRIS’s products are sold in combination with customer support and maintenance services, which consist of software updates and product support. Software updates provide customers with rights to unspecified software updates that ARRIS chooses to develop and to maintenance releases and patches that the Company chooses to release during the period of the support period. Product support services include telephone support, remote diagnostics, email and web access, access to on-site non-cancelable Software Sold Without Tangible Equipment — Standalone Services — Incentives — Value Added Resellers sell-in Retail —
Shipping and Handling Fees	(h) Shipping and Handling Fees Shipping and handling costs for the years ended December 31, 2017, 2016, and 2015 were approximately $12.6 million, $4.3 million and $5.6 million, respectively, and are classified in cost of sales.
Taxes Collected from Customers and Remitted to Governmental Authorities	(i) Taxes Collected from Customers and Remitted to Governmental Authorities Taxes assessed by a government authority that are both imposed on and concurrent with specific revenue transactions between us and our customers are presented on a net basis in our Consolidated Statements of Income.
Depreciation of Property, Plant and Equipment	(j) Depreciation of Property, Plant and Equipment The Company provides for depreciation of property, plant and equipment on the straight-line basis over estimated useful lives of 10 to 40 years for buildings and improvements, 2 to 10 years for machinery and equipment, and the shorter of the term of the lease or useful life for leasehold improvements. Included in depreciation expense is the amortization of landlord funded tenant improvements which amounted to $12.1 million in 2017, $6.6 million in 2016 and $4.5 million in 2015. Depreciation expense, including amortization of capital leases, for the years ended December 31, 2017, 2016, and 2015 was approximately $88.2 million, $90.6 million, and $71.8 million, respectively. Certain events or changes in circumstances may indicate that the recoverability of the carrying amount of property, plant and equipment should be assessed, including, among others, a significant decrease in market value, a significant change in the business climate in a particular market, or a current period operating or cash flow loss combined with historical losses or projected future losses. To test for recovery, ARRIS groups assets (an “asset group”) in a manner that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. When such events or changes in circumstances are present, the Company estimates the future cash flows expected to result from the use of the asset or asset group and its eventual disposition. These estimated future cash flows are consistent with those used in internal planning. If the sum of the expected future cash flows (undiscounted and pre-tax Property, Plant and Equipment
Goodwill, and Other Intangible Assets	(k) Goodwill, and Other Intangible Assets Intangible assets are classified into three categories: (1) goodwill, (2) intangible assets with definite lives subject to amortization, and (3) intangible assets with indefinite lives not subject to amortization. The Company determines the useful lives of its identifiable intangible assets after considering the specific facts and circumstances related to each intangible asset. Factors the Company considers when determining useful lives include the contractual term of any agreement related to the asset, the historical performance of the asset, the Company’s long-term strategy for using the asset, any laws or other local regulations which could impact the useful life of the asset, and other economic factors, including competition and specific market conditions. Intangible assets that are deemed to have definite lives are amortized, primarily on a straight-line basis, over their useful lives, generally ranging from 1 to 13 years. Certain intangible assets are being amortized using an accelerated method, as an accelerated method best approximates the distribution of cash flows generated by the intangible assets. See Note 5 Goodwill and Other Intangible Assets Goodwill The Company performs impairment tests of goodwill at the reporting unit level, which is at or one level below the operating segments. The operating segments are primarily based on the nature of the products and services offered, which is consistent with the way management operates the business. The Customer Premises Equipment and Enterprise Networks operating segments are the same as the reporting unit. The Network & Cloud operating segment is subdivided into three reporting units which are Network Infrastructure, Cloud Services, and Cloud TV. Goodwill is assigned to the reporting unit or units that benefit from the synergies arising from each business combination. The Company evaluates goodwill for impairment annually as of October 1 st , or when an indicator of impairment exists. As of October 1, 2017, we early adopted Accounting Standards Update (“ASU”) 2017-04, Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment (“ASU 2017-04”). ASU 2017-04 eliminated Step 2 of the goodwill impairment test in which an entity had to perform procedures to determine the fair value at the impairment testing date of its assets and liabilities. The standard does not change the guidance on completing Step 1 of the goodwill impairment test. In accordance with the new standard, we compare the fair value of our reporting units with the carrying amount, including goodwill. We recognize an impairment charge for the amount by which the carrying amount exceeds a reporting unit’s fair value, as applicable. The Company typically uses a weighting of income approach using discounted cash flow models and a market approach to determine the fair value of a reporting unit. The assumptions used in these models are consistent with those the Company believes hypothetical marketplace participants would use. The Company continues to have the option to perform the optional qualitative assessment of goodwill prior to completing the Step 1 process described above to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. During the fourth quarter of 2017, the Company determined the carrying amount of its Cloud TV reporting unit associated with our ActiveVideo acquisition exceeded its fair value, and as such have recorded a partial goodwill impairment of $51.2 million as of December 31, 2017, of which $17.9 million is attributable to noncontrolling interest. There was no impairment of goodwill resulting from the Company’s annual impairment testing in 2016 and 2015. Indefinite-lived intangible assets, net The Company tests intangible assets determined to have indefinite useful lives, including certain trademarks and in-process in-process in-process The Company has the option to perform a qualitative assessment of indefinite-lived intangible assets, prior to completing the impairment test described above. The Company must assess whether it is more likely than not that the fair value of the intangible asset is less than its carrying amount. If the Company concludes that this is the case, it must perform the testing described above. Otherwise, the Company does not need to perform any further assessment. During the fourth quarter of 2017, the Company recorded a $3.8 million partial impairment related to indefinite-lived tradenames acquired included as part of our Cloud TV reporting unit, of which $1.3 million is attributable to noncontrolling interest. During 2016, the Company wrote off $2.2 million of in-process There were no impairment charges related to intangible assets with indefinite-lives in 2015. Definite-lived intangible assets, net When facts and circumstances indicate that the carrying amount of definite-lived intangible assets may not be recoverable, management assesses the recoverability of the carrying amount by preparing estimates of future cash flows. These estimated future cash flows are consistent with those we use in our internal planning. To test for recovery, the Company group assets (an “asset group”) in a manner that represents the lowest level for which identifiable cash flows are largely independent of the cash flows of other groups of assets and liabilities. If the sum of the expected future cash flows (undiscounted and pre-tax There were no impairment charges related to definite-lived intangible assets during 2017, 2016 and 2015.
Advertising and Sales Promotion	(l) Advertising and Sales Promotion Advertising and sales promotion costs are expensed as incurred. Advertising and sales promotion expense was approximately $17.5 million, $19.6 million, and $16.8 million for the years ended December 31, 2017, 2016 and 2015, respectively.
Research and Development	(m) Research and Development Research and development (“R&D”) costs are expensed as incurred. The expenditures include compensation costs, materials, other direct expenses, and an allocation of information technology, telecommunications, and facilities costs.
Warranty	(n) Warranty ARRIS provides warranties of various lengths to customers based on the specific product and the terms of individual agreements. For further discussion, see Note 9 Guarantees
Income Taxes	(o) Income Taxes ARRIS uses the liability method of accounting for income taxes, which requires recognition of temporary differences between financial statement and income tax bases of assets and liabilities, measured by enacted tax rates. If necessary, the measurement of deferred tax assets is reduced by the amount of any tax benefits that are not expected to be realized based on available evidence. ARRIS reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense. See Note 18 Income Taxes
Foreign Currency	(p) Foreign Currency A significant portion of the Company’s products are manufactured or assembled in Brazil, China, Mexico and Taiwan, and we have research and development centers in Canada, China, France, India, Ireland, Israel, Singapore, Sweden, Taiwan and United Kingdom. Sales into international markets have been and are expected in the future to be an important part of the Company’s business. These foreign operations are subject to the usual risks inherent in conducting business abroad, including risks with respect to currency exchange rates, economic and political destabilization, restrictive actions and taxation by foreign governments, nationalization, the laws and policies of the United States affecting trade, foreign investment and loans, and foreign tax laws. The financial position and results of operations of certain of the Company’s international subsidiaries are measured using the local currency as the functional currency. Revenues and expenses of these subsidiaries are translated into U.S. dollars at average exchange rates prevailing during the period. Assets and liabilities of these subsidiaries are translated at the exchange rates as of the balance sheet date. Translation gains and losses are recorded in accumulated other comprehensive income. ARRIS has certain international customers who are billed in their local currency and certain international operations that procure in U.S. dollars. ARRIS also has certain predictable expenditures for international operations in local currency. Additionally, certain intercompany transactions are denominated in foreign currencies and subject to revaluation. The Company enters into forward or currency option contracts based on a percentage of expected foreign currency exposures. The percentage can vary, based on the predictability of the exposures denominated in the foreign currency. See Note 8 Derivative Instruments and Hedging Activities
Stock-Based Compensation	(q) Stock-Based Compensation See Note 19 Stock-Based Compensation
Concentrations of Credit Risk	(r) Concentrations of Credit Risk Financial instruments that potentially subject ARRIS to concentrations of credit risk consist principally of cash, cash equivalents and short-term investments, accounts receivable and derivatives. ARRIS places its temporary cash investments with high credit quality financial institutions. Concentrations with respect to accounts receivable occur as the Company sells primarily to large, well- established companies, including companies outside of the United States. The Company’s credit policy generally does not require collateral from its customers. ARRIS closely monitors extensions of credit to other parties and, where necessary, utilizes common financial instruments to mitigate risk or requires cash on delivery terms. Overall financial strategies and the effect of using a hedge are reviewed periodically. As of December 31, 2017, two customers represented 19% and 14% of total accounts receivable. As of December 31, 2016, three customers represented 20%, 17% and 14% of total accounts receivable.
Fair Value	(s) Fair Value The following methods and assumptions were used by the Company in estimating its fair value disclosures for financial instruments: • Cash, cash equivalents, and short-term investments: The carrying amounts reported in the consolidated balance sheets for cash, cash equivalents, and short-term investments approximate their fair values. • Accounts receivable and accounts payable: The carrying amounts reported in the balance sheet for accounts receivable and accounts payable approximate their fair values. • Marketable securities: The fair values for trading and available-for-sale • Non-marketable Non-marketable • Senior secured credit facilities: Comprised of term loans and a revolving credit facility of which the outstanding principal amount approximates fair value • Derivative instruments: The carrying amounts reported in the balance sheet for derivative financial instruments reflect their estimated fair values. The Company has designated interest rate derivatives as cash flow hedges and the objective is to manage the variability of cash flows in the interest payments related to the portion of the variable-rate debt designated as being hedged. The Company’s foreign currency derivative instruments economically hedge certain risk but are not designated as hedges. The objective of these derivatives instruments is to add stability to foreign currency gains and losses recorded as other expense (income) and to manage its exposure to foreign currency movements.
Computer Software	(t) Computer Software Internal-use The Company capitalizes costs associated with internally developed and/or purchased software systems for internal use that have reached the application development stage and meet recoverability tests. Capitalized costs include external direct costs of materials and services utilized in developing or obtaining internal-use internal-use External-use Research and development costs are charged to expense as incurred. ARRIS generally has not capitalized any such development costs because the costs incurred between the attainment of technological feasibility for the related software product through the date when the product is available for general release to customers has been insignificant.
Comprehensive Income (Loss)	(u) Comprehensive Income (Loss) The components of comprehensive income (loss) include net income (loss), unrealized gains (losses) on available-for-sale
Warrants	(v) Warrants The Company has outstanding warrants with certain customers to purchase ARRIS’s ordinary shares. Vesting of the warrants is subject to certain purchase volume commitments by the customers. Under applicable accounting guidance, if the vesting of a tranche of the warrants is probable, the Company is required to mark-to-market Warrants

Summary of Significant Accoun35

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Changes in Reserve for Allowance for Doubtful Accounts, Sales Returns and Allowances	The following table represents a summary of the changes in the reserve for allowance for doubtful accounts, and sales returns and allowances for fiscal 2017, 2016 and 2015 (in thousands): 2017 2016 2015 Balance at beginning of fiscal year $ 15,253 $ 9,975 $ 6,392 (Credit) charges to expenses (566 ) 1,386 2,997 (Write-offs) recoveries, net (4,457 ) 3,892 586 Balance at end of fiscal year $ 10,230 $ 15,253 $ 9,975

Business Acquisitions (Tables)

Business Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2017
Acquired Intangible Assets	The $472.5 million of acquired intangible assets are as follows (in thousands): Preliminary Estimated Weighted Technology and patents $ 265,000 6.8 Customer contracts and relationships 100,000 7.0 In-process 50,000 indefinite Trademarks and tradenames 22,500 10.0 Backlog 35,000 0.5 Total estimated fair value of intangible assets $ 472,500
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Summary of Fair Value of Consideration Transferred	The following table summarizes the fair value of consideration transferred for Ruckus Networks (in thousands): Cash consideration $ 779,743 Estimated working capital adjustments (16,371 ) Non-cash (1) (2,359 ) Total consideration transferred $ 761,013 (1) Non-cash
Summary of Estimated Fair Values of Net Assets Acquired	The following is a summary of the estimated fair values of the net assets acquired (in thousands): Amounts Recognized Total estimated consideration transferred $ 761,013 Cash and cash equivalents 18,958 Accounts receivables 32,940 Inventories 48,897 Prepaids and other 4,836 Property, plant & equipment 33,500 Intangible assets 472,500 Other assets 39,528 Accounts payable and accrued liabilities (17,216 ) Other current liabilities (9,666 ) Deferred revenue (47,718 ) Noncurrent deferred income tax liabilities, net (92,233 ) Other noncurrent liabilities (41,347 ) Net assets acquired 442,979 Goodwill $ 318,034

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the three years ended December 31, 2017 are as follows (in thousands): CPE N & C Enterprise Total Goodwill 682,582 710,037 — $ 1,392,619 Accumulated impairment losses — (378,656 ) — (378,656 ) Balance as of December 31, 2015 $ 682,582 $ 331,381 $ — $ 1,013,963 Changes in year 2016: Goodwill acquired (disposed), net 698,106 291,331 — 989,437 Currency translation 10,483 (60 ) — 10,423 Other — 2,346 — 2,346 Balance as of December 31, 2016 $ 1,391,171 $ 624,998 $ — $ 2,016,169 Goodwill 1,391,171 1,003,654 — 2,394,825 Accumulated impairment losses — (378,656 ) — (378,656 ) Balance as of December 31, 2016 $ 1,391,171 $ 624,998 $ — $ 2,016,169 Changes in year 2017: Goodwill acquired, net — — 318,034 318,034 Impairment — (51,200 ) — (51,200 ) Other (4,491 ) — — (4,491 ) Balance as of December 31, 2017 $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512 Goodwill 1,386,680 1,003,654 318,034 2,708,368 Accumulated impairment losses — (429,856 ) — (429,856 ) Balance as of December 31, 2017 $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512
Gross Carrying Amount and Accumulated Amortization of Intangible Assets	The gross carrying amount and accumulated amortization of the Company’s intangible assets as of December 31, 2017 and December 31, 2016 are as follows (in thousands): December 31, 2017 December 31, 2016 Gross Accumulated Net Book Gross Accumulated Net Book Definite-lived intangible assets Customer relationships $ 1,672,470 $ 780,655 $ 891,815 $ 1,572,947 $ 624,719 $ 948,228 Developed technology, patents & licenses 1,521,893 771,200 750,693 1,248,719 571,808 676,911 Trademarks, trade and domain names 87,472 41,885 45,587 83,472 41,433 42,039 Backlog 35,000 5,833 29,167 16,400 16,400 — Sub-total $ 3,316,835 $ 1,599,573 $ 1,717,262 $ 2,921,538 $ 1,254,360 $ 1,667,178 Indefinite-lived intangible assets Trademarks and trade names — — — 5,900 — 5,900 In-process 54,100 — 54,100 4,100 — 4,100 Sub-total 54,100 — 54,100 10,000 — 10,000 Total $ 3,370,935 $ 1,599,573 $ 1,771,362 $ 2,931,538 $ 1,254,360 $ 1,677,178
Schedule of Amortization of Intangible Assets	The following table presents the amortization of intangible assets (in thousands): Years Ended December 31, 2017 2016 2015 Cost of sales $ 3,174 $ 2,963 $ 670 Selling, general & administrative expense 3,835 4,048 3,480 Amortization of acquired intangible assets 375,407 397,464 227,440 Total $ 382,416 $ 404,475 $ 231,590
Estimated Total Amortization Expense for Finite-Lived Intangibles for Next Five Fiscal Years	The estimated total amortization expense for finite-lived intangibles for each of the next five fiscal years is as follows (in thousands): 2018 $ 402,005 2019 326,807 2020 315,077 2021 180,290 2022 146,499 Thereafter 344,484

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2017
Investments	ARRIS’s investments consisted of the following (in thousands): As of December 31, As of December 31, Current Assets: Available-for-sale $ 23,874 $ 115,553 Noncurrent Assets: Available-for-sale 5,718 15,391 Equity method investments 22,021 22,688 Cost method investments 10,092 6,841 Other investments 33,251 28,012 Total classified as non-current 71,082 72,932 Total $ 94,956 $ 188,485
Amortized Costs and Fair Value of Available-for-sale Securities	The amortized costs and fair value of available-for-sale December 31, 2017 December 31, 2016 Amortized Gross Gross Fair Amortized Gross Gross Fair Certificates of deposit (non-U.S.) $ 12,809 $ — $ — $ 12,809 $ 87,372 $ — $ — $ 87,372 Corporate bonds 11,003 86 (24 ) 11,065 34,175 35 (77 ) 34,133 Short-term bond fund — — — — 5,046 69 (69 ) 5,046 Corporate obligations 13 — — 13 3 — — 3 Money markets 38 — — 38 54 — — 54 Mutual funds 65 14 — 79 94 28 (21 ) 101 Other investments 4,941 744 (97 ) 5,588 4,192 530 (487 ) 4,235 Total $ 28,869 $ 844 $ (121 ) $ 29,592 $ 130,936 $ 662 $ (654 ) $ 130,944
Unrealized Losses on Available-For-Sale Securities and Fair Value	The following table represents the breakdown of the available-for-sale December 31, 2017 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Certificates of deposit (non-U.S.) $ 12,809 $ — $ — $ — $ 12,809 $ — Corporate bonds 11,065 (24 ) — — 11,065 (24 ) Corporate obligations 13 — — — 13 — Money markets 38 — — — 38 — Mutual funds 79 — — — 79 — Other investments 5,588 (97 ) — — 5,588 (97 ) Total $ 29,592 $ (121 ) $ — $ — $ 29,592 $ (121 ) December 31, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Certificates of deposit (non-U.S.) $ 87,372 $ — $ — $ — $ 87,372 $ — Corporate bonds 34,133 (77 ) — — 34,133 (77 ) Short-term bond fund 5,046 (69 ) — — 5,046 (69 ) Corporate obligations 3 — — — 3 — Money markets 54 — — — 54 — Mutual funds 101 (21 ) — — 101 (21 ) Other investments 4,235 (487 ) — — 4,235 (487 ) Total $ 130,944 $ (654 ) $ — $ — $ 130,944 $ (654 )
Sale and/or Maturity of Available-for-Sale Securities	The sale and/or maturity of available-for-sale Years Ended December 31, 2017 2016 2015 Proceeds from sales $ 165,301 $ 25,932 $ 157,965 Gross gains 16 33 305 Gross losses — — (452 )
Contractual Maturities of Available-for-Sale Securities	The contractual maturities of the Company’s available-for-sale December 31, 2017 Amortized Cost Fair Value Within 1 year $ 23,812 $ 23,874 After 1 year through 5 years — — After 5 years through 10 years — — After 10 years 5,057 5,718 Total $ 28,869 $ 29,592
Summary of Ownership Structure and Ownership Percentage of Non-consolidated Investments	The following table summarizes the ownership structure and ownership percentage of the non-consolidated Name of Investee Ownership Structure % Ownership MPEG LA Limited Liability Company 8.4% Music Choice Limited Liability Partnership 18.2% Conditional Access Licensing (“CAL”) Limited Liability Company 49.0% Combined Conditional Access Development (“CCAD”) Limited Liability Company 50.0%

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Investment Assets (Excluding Equity and Cost Method Investments) and Derivatives Measured at Fair Value on Recurring Basis	The following table presents the Company’s investment assets (excluding equity and cost method investments) and derivatives measured at fair value on a recurring basis as of December 31, 2017 and 2016 (in thousands): December 31, 2017 Level 1 Level 2 Level 3 Total Certificates of deposit (foreign) $ — $ 12,809 $ — $ 12,809 Corporate bonds — 11,065 — 11,065 Corporate obligations — 13 — 13 Money markets 38 — — 38 Mutual funds 79 — — 79 Other investments — 5,588 — 5,588 Interest rate derivatives — asset derivatives — 10,156 — 10,156 Interest rate derivatives — liability derivatives — (4,024 ) — (4,024 ) Foreign currency contracts — asset position — 405 — 405 Foreign currency contracts — liability position — (8,802 ) — (8,802 ) December 31, 2016 Level 1 Level 2 Level 3 Total Certificates of deposit (foreign) $ — $ 87,372 $ — $ 87,372 Corporate bonds — 34,133 — 34,133 Short-term bond fund 5,046 — — 5,046 Corporate obligations — 3 — 3 Money markets 54 — — 54 Mutual funds 101 — — 101 Other investments — 4,235 — 4,235 Interest rate derivatives — asset derivatives — 7,860 — 7,860 Interest rate derivatives — liability derivatives — (9,006 ) — (9,006 ) Foreign currency contracts — asset position — 7,369 — 7,369 Foreign currency contracts — liability position — (3,671 ) — (3,671 )

Derivative Instruments and He40

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Impact of Derivative Financial Instruments	The table below presents the impact of the Company’s derivative financial instruments had on Consolidated Statement of Operations (in thousands): Location of Years Ended 2017 2016 2015 Gain (loss) Recognized in OCI on Derivatives (Effective Portion) Interest expense $ 5,587 $ 2,103 $ (13,256 ) Amounts Reclassified from Accumulated OCI into Income (Effective Portion) Interest expense 1,663 7,512 7,495
Fair Values of Derivative Instruments Designated as Hedging Instruments Recorded in Consolidated Balance Sheet	The following table indicates the location on the Consolidated Balance Sheets in which the Company’s derivative assets and liabilities designated as hedging instruments have been recognized and the related fair values of those derivatives (in thousands): Balance Sheet Location December 31, 2017 December 31, 2016 Interest rate derivatives — asset derivatives Other current assets 3,590 222 Interest rate derivatives — asset derivatives Other assets 6,566 8,043 Interest rate derivatives — liability derivatives Other accrued liabilities (3,053 ) (2,989 ) Interest rate derivatives — liability derivatives Other noncurrent liabilities (971 ) (6,421 )
Fair Values of Derivative Instruments and Change in Fair Values of Derivative Not Designated as Hedging Instruments Recorded in Consolidated Balance Sheet and Consolidated Statements of Operations	The following table indicates the location on the Consolidated Balance Sheets in which the Company’s derivative assets and liabilities not designated as hedging instruments have been recognized and the related fair values of those derivatives (in thousands): Balance Sheet Location December 31, 2017 December 31, 2016 Foreign exchange contracts — asset derivatives Other current assets $ 405 $ 7,369 Foreign exchange contracts — liability derivatives Other accrued liabilities (8,202 ) (3,671 ) Foreign exchange contracts — liability derivatives Other noncurrent liabilities (600 ) — The change in the fair values of ARRIS’s derivatives not designated as hedging instruments recorded in the Consolidated Statements of Income were as follows (in thousands): Statement of Operations Location 2017 2016 2015 Foreign exchange contracts Loss on foreign currency $ 25,339 $ 5,909 $ 7,597

Guarantees (Tables)

Guarantees (Tables)	12 Months Ended
	Dec. 31, 2017
Information Regarding Changes in ARRIS's Aggregate Product Warranty Liabilities	Information regarding the changes in ARRIS’s aggregate product warranty liabilities for the years ending December 31, 2017 and 2016 were as follows (in thousands): 2017 2016 Beginning balance $ 88,187 $ 49,027 Warranty reserve at acquisition 1,700 43,723 Accruals related to warranties (including changes in assumptions) 36,379 51,947 Settlements made (in cash or in kind) (50,177 ) (56,510 ) Ending balance $ 76,089 $ 88,187

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Reportable Segments	The tables below present information about the Company’s reportable segments (in thousands): 2017 2016 2015 Net sales to external customers: CPE $ 4,475,670 $ 4,747,445 $ 3,136,585 N&C 2,094,113 2,111,708 1,661,594 Enterprise 45,749 — — Other (1,140 ) (30,035 ) 153 Total 6,614,392 6,829,118 4,798,332 Direct contribution: CPE 497,986 684,744 548,840 N&C 806,355 681,608 487,166 Enterprise 6,094 — — Segment total 1,310,435 1,366,352 1,036,006 Corporate and unallocated costs (658,659 ) (697,834 ) (568,336 ) Amortization of intangible assets (375,407 ) (397,464 ) (227,440 ) Impairment of goodwill and intangible assets (55,000 ) (2,200 ) — Integration, acquisition, restructuring and other (98,357 ) (158,137 ) (29,277 ) Operating income 123,012 110,717 210,953 Interest expense 87,088 79,817 70,936 Loss on investments 11,066 21,194 6,220 Loss (gain) on foreign currency 9,757 (13,982 ) 20,761 Interest income (7,975 ) (4,395 ) (2,379 ) Other expense (income), net 1,873 3,991 8,362 Income before income taxes $ 21,203 $ 24,092 $ 107,053
Composition of Corporate and Unallocated Costs	For the years ended December 31, 2017, 2016 and 2015, the compositions of our corporate and unallocated costs that are reflected in the consolidated statement of operations were as follows (in thousands): 2017 2016 2015 Corporate and unallocated costs: Cost of sales $ 90,791 $ 150,588 $ 56,311 Selling, general and administrative expenses 389,753 375,747 349,993 Research and development expenses 178,115 171,499 162,032 Total $ 658,659 $ 697,834 $ 568,336
Summary of Company's Net Intangible Assets and Goodwill by Reportable Segment	The following table summarizes the Company’s net intangible assets and goodwill by reportable segment as of December 31, 2017 and 2016 (in thousands): CPE N&C Enterprise Total December 31, 2017 Goodwill $ 1,386,680 $ 573,798 $ 318,034 $ 2,278,512 Intangible assets, net 807,314 501,998 462,050 1,771,362 December 31, 2016 Goodwill $ 1,391,171 $ 624,998 $ — $ 2,016,169 Intangible assets, net 1,064,692 612,486 — 1,677,178
Summary of Company's Revenues by Products and Services	The following table summarizes the Company’s revenues by products and services as of December 31, 2017, 2016 and 2015 (in thousands): 2017 2016 2015 CPE: Broadband CPE $ 1,808,600 $ 1,683,491 $ 1,452,164 Video CPE 2,667,070 3,063,954 1,684,421 Sub-total 4,475,670 4,747,445 3,136,585 Network & Cloud: Networks 1,747,936 1,789,097 1,390,283 Software and services 346,177 322,611 271,311 Sub-total 2,094,113 2,111,708 1,661,594 Enterprise Networks: Enterprise Networks 45,749 — — Other: Other (1,140 ) (30,035 ) 153 Total net sales $ 6,614,392 $ 6,829,118 $ 4,798,332
Summary of Sales to Customers	A summary of sales to these customers for 2017, 2016 and 2015 is set forth below (in thousands, except percentages): Years ended December 31, 2017 2016 2015 Charter and affiliates $ 985,237 $ 1,064,408 (1) $ 960,497 % of sales 14.9 % 15.6 % 20.0 % Comcast and affiliates $ 1,479,415 $ 1,637,519 (1) $ 1,007,376 % of sales 22.4 % 24.0 % 21.0 % (1) Revenues were reduced $30.2 million in 2016, as a result of warrants held by Charter and Comcast that are intended to incent additional purchases from them. (see Note 17 Warrants
Summary of ARRIS' International Sales by Geographic Region	International sales for the years ended December 31, 2017, 2016 and 2015 were as follows (in thousands): For the Years Ended December 31, 2017 2016 2015 Domestic — U.S. $ 4,351,843 $ 4,909,698 $ 3,418,583 International Americas, excluding U.S. 1,080,456 982,769 880,581 Asia Pacific 374,772 291,504 142,893 EMEA 807,321 645,147 356,275 Total international $ 2,262,549 $ 1,919,420 $ 1,379,749 Total sales $ 6,614,392 $ 6,829,118 $ 4,798,332
Summary of Plant and Equipment by Geographic Region	The following table summarizes plant and equipment assets by geographic region as of December 31, 2017 and 2016 (in thousands): For the Years Ended 2017 2016 Domestic — U.S. $ 250,866 $ 220,397 International Americas, excluding U.S. 12,746 12,838 Asia Pacific 85,236 81,655 EMEA 23,619 38,487 Total international $ 121,601 $ 132,980 Total property, plant and equipment assets $ 372,467 $ 353,377

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2017
Components of Inventory Net of Reserves	The components of inventory are as follows, net of reserves (in thousands): December 31, 2017 2016 Raw material $ 149,328 $ 86,243 Work in process 5,416 3,877 Finished goods 670,467 461,421 Total inventories, net $ 825,211 $ 551,541

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment, at Cost	Property, plant and equipment, at cost, consisted of the following (in thousands): December 31, 2017 2016 Land $ 68,562 $ 68,562 Buildings and leasehold improvements 205,534 163,333 Machinery and equipment 466,325 440,955 740,421 672,850 Less: Accumulated depreciation (367,954 ) (319,473 ) Total property, plant and equipment, net $ 372,467 $ 353,377

Restructuring, Acquisition an45

Restructuring, Acquisition and Integration (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Changes to Restructuring Accrual	The following table represents a summary of and changes to the restructuring accrual, which is primarily composed of accrued severance and other employee costs and contractual obligations that related to excess leased facilities (in thousands): Employee Contractual Write-off Total Balance at December 31, 2015 $ 3 $ 87 $ — $ 90 Restructuring charges 92,246 3,379 716 96,341 Cash payments / adjustments (64,363 ) (1,223 ) — (65,586 ) Non-cash — — (716 ) (716 ) Balance at December 31, 2016 $ 27,886 $ 2,243 $ — $ 30,129 Restructuring charges 13,346 5,742 1,842 20,930 Cash payments / adjustments (35,955 ) (4,683 ) — (40,638 ) Non-cash (898 ) — (1,842 ) (2,740 ) Balance at December 31, 2017 $ 4,379 $ 3,302 $ — $ 7,681

Lease Financing Obligation (Tab

Lease Financing Obligation (Tables)	12 Months Ended
	Dec. 31, 2017
Payments Required on Lease Financing Obligations	At December 31, 2017, the minimum lease payments required on the financing obligation were as follows (in thousands): 2018 $ 4,260 2019 4,388 2020 4,520 2021 4,655 2022 4,795 Thereafter through 2025 11,307 Total minimum lease payments $ 33,925

Indebtedness (Tables)

Indebtedness (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of Indebtedness and Lease Financing Obligations	The following is a summary of indebtedness and lease financing obligations as of December 31, 2017 and 2016 (in thousands): As of December 31, 2017 As of December 31, 2016 Current liabilities: Term A loan $ 19,550 $ 49,500 Term A-1 62,500 40,000 Term B-3 5,450 — Lease finance obligation 870 775 Current obligations 88,370 90,275 Current deferred financing fees and debt discount (4,811 ) (7,541 ) 83,559 82,734 Noncurrent liabilities: Term A loan 366,562 866,250 Term A-1 1,171,875 730,000 Term B loan — 543,812 Term B-3 535,463 — Revolver — — Lease finance obligation 61,032 57,902 Noncurrent obligations 2,134,932 2,197,964 Noncurrent deferred financing fees and debt discount (18,688 ) (17,955 ) 2,116,244 2,180,009 Total $ 2,199,803 $ 2,262,743
Interes Rates on Senior Secured Credit Facilities	Interest rates on borrowings under the senior secured credit facilities are set forth in the table below. Rate As of December 31, 2017 Term Loan A LIBOR + 1.75 % 3.32 % Term Loan A-1 LIBOR + 1.75 % 3.32 % Term Loan B-3 LIBOR + 2.25 % 3.82 % Revolving Credit Facility (1) LIBOR + 1.75 % Not Applicable (1) Includes unused commitment fee of 0.30% and letter of credit fee of 1.75% not reflected in interest rate above.
Scheduled Maturities of Contractual Debt Obligations	As of December 31, 2017, the scheduled maturities of the contractual debt obligations are as follows (in thousands): 2018 $ 87,500 2019 87,500 2020 87,500 2021 87,500 2022 1,297,737 Thereafter 513,663

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2017
Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Computations	The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for the periods indicated (in thousands, except per share data): For the Years Ended December 31, 2017 2016 2015 Basic: Net income attributable to ARRIS International plc. $ 92,027 $ 18,100 $ 92,181 Weighted average shares outstanding 187,133 190,701 146,388 Basic earnings per share $ 0.49 $ 0.09 $ 0.63 Diluted: Net income attributable to ARRIS International plc. $ 92,027 $ 18,100 $ 92,181 Weighted average shares outstanding 187,133 190,701 146,388 Net effect of dilutive shares 2,483 1,484 2,971 Total 189,616 192,185 149,359 Diluted earnings per share $ 0.49 $ 0.09 $ 0.62

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income (Loss) Before Income Taxes	Income (loss) before income taxes (in thousands): Years Ended December 31, 2017 2016 2015 U.K. $ (64,177 ) $ (36,300 ) $ (5,321 ) U.S. (159,951 ) (149,605 ) 47,063 Other Foreign 245,331 209,997 65,311 $ 21,203 $ 24,092 $ 107,053
Components of Income Tax Expense (Benefit)	Income tax expense (benefit) consisted of the following (in thousands): Years Ended December 31, 2017 2016 2015 Current — U.K. $ 667 $ 81,822 $ 559 U.S. 3,530 47,025 2,141 Other Foreign 25,347 31,552 14,476 29,544 160,399 17,176 Deferred — U.K. (22,254 ) (23,177 ) (30 ) U.S. (49,671 ) (105,735 ) 5,119 Other Foreign (2,540 ) (16,356 ) 329 (74,465 ) (145,268 ) 5,418 Income tax expense (benefit) $ (44,921 ) $ 15,131 $ 22,594
Reconciliation of U.S. Statutory Federal Income Tax Rate and Effective Income Tax Rate	A reconciliation of the U.K. statutory income tax rate of 19.25% for 2017 and 20.00% for 2016 and the U.S. federal statutory income tax rate of 35.00% for 2015 and the effective income tax rates is as follows: Years Ended December 31, 2017 2016 2015 Statutory income tax rate 19.25 % 20.00 % 35.00 % Effects of: State income taxes, net of federal benefit 11.0 (16.6 ) 5.2 Acquired deferred tax assets — — 5.8 U.S. domestic manufacturing deduction (0.9 ) (12.0 ) — Facilitative transaction costs 54.2 22.0 — Research and development tax credits (119.7 ) (90.6 ) (25.1 ) Withholding taxes (U.K. entities) 12.4 245.5 — U.K. stamp duty — 9.4 — Subpart F income — 4.0 4.8 Changes in valuation allowance 35.1 6.0 (26.6 ) Foreign tax credits 29.5 (14.0 ) (20.7 ) Non-deductible 4.9 — 5.3 Non-U.S. — — (5.0 ) Non-U.K. 26.1 (50.9 ) — Benefit of other foreign tax regimes (170.6 ) (135.4 ) — Recapture of dual consolidated losses — — 1.1 Taiwan gain — — 34.3 Change in tax rate (105.0 ) — — Uncertain tax positions (13.1 ) 88.9 (1.7 ) Other, net 5.0 (13.5 ) 8.7 (211.85 )% 62.8 % 21.1 %
Significant Components of ARRIS' Net Deferred Income Tax Assets (Liabilities)	Significant components of ARRIS’ net deferred income tax assets (liabilities) were as follows (in thousands): December 31, 2017 2016 Deferred income tax assets Inventory costs $ 29,453 $ 63,756 Property, plant and equipment — 2,789 Accrued employee benefits 34,472 41,246 Accrued operating expenses 24,904 42,544 Reserves 16,434 26,731 Investments 8,796 667 Loss carryforwards 91,832 67,645 Research and development and other credits 164,841 118,113 Capitalized research and development 83,224 177,594 Other 17,379 50,171 Total deferred income tax assets 471,335 591,256 Deferred income tax liabilities: Property, plant and equipment (571 ) — Other liabilities (7,190 ) (6,656 ) Goodwill and intangible assets (325,283 ) (451,600 ) Total deferred income tax liabilities (333,044 ) (458,256 ) Net deferred income tax assets 138,291 133,000 Valuation allowance (91,743 ) (57,772 ) Net deferred income tax assets $ 46,548 $ 75,228
Significant Attributes of ARRIS's Deferred Tax Assets Related to Loss Carryforwards and Tax credits	Significant attributes of ARRIS’s deferred tax assets related to loss carryforwards and tax credits were as follows: (in thousands): 2017 2016 Expiration Net operating loss carryforwards (“NOL”): U.S. federal (1) $ 27,405 $ 30,009 2018 - 2037 Georgia 15,948 4,737 2018 - 2037 Pennsylvania 17,687 13,899 2018 - 2037 Other U.S. states 12,236 4,495 2018 - 2037 Non-U.S. 18,556 14,505 Varies (2) Total tax effected loss carryforward $ 91,832 $ 67,645 Tax credit carryforwards: U.S. federal R&D $ 103,581 $ 84,711 2018 - 2037 Other U.S. federal 5,742 3,075 2027 California R&D 34,208 13,782 Indefinite Other U.S. states R&D 21,310 16,545 2018 - 2037 Total credit carryforward $ 164,841 $ 118,113 (1) Gross of tax effect U.S. Federal operating loss carryforwards are $130.5 million for the year ended December 31, 2017 and $85.7 million for the year ended December 31, 2016. (2) Canadian NOLs expire within 16 years and all other material foreign NOLs have an indefinite carryforward life.
Summary Deferred Tax Asset Valuation Allowance	Significant components of ARRIS’s valuation allowance were as follows (in thousands): 2017 2016 U.S. federal R&D $ (8,578 ) $ (8,064 ) Other U.S. federal (4,241 ) (16,792 ) Georgia NOL (15,008 ) (3,464 ) Pennsylvania NOL (10,068 ) (6,596 ) Other state NOL (8,988 ) (3,265 ) California R&D (18,773 ) — Other state R&D (15,606 ) (10,438 ) Non-U.S. (10,481 ) (9,153 ) Ending balance $ (91,743 ) $ 57,772 A roll-forward analysis of our deferred tax asset valuation allowances is as follows (in thousands): For the Period ended December 31, 2017 2016 2015 Beginning balance $ 57,772 $ 87,788 $ 118,629 Additions 52,680 17,973 3,312 Reductions (18,709 ) (47,989 ) (34,153 ) Ending balance $ 91,743 $ 57,772 $ 87,788
Tabular Reconciliation of Unrecognized Tax Benefits	Tabular Reconciliation of Unrecognized Tax Benefits (in thousands) For the Period ended December 31, 2017 2016 2015 Beginning balance $ 128,053 $ 49,919 $ 48,019 Gross increases — tax positions in prior period 6,783 8,068 1,599 Gross decreases — tax positions in prior period (21,409 ) (5,700 ) (2,185 ) Gross increases — current-period tax positions 24,551 27,774 9,578 Increases from acquired businesses 39,420 60,796 — Changes related to foreign currency translation adjustment and remeasurement 1,545 (1,087 ) — Decreases relating to settlements with taxing authorities and other (686 ) (3,933 ) (6,689 ) Decreases due to lapse of statute of limitations (4,032 ) (7,784 ) (403 ) Ending balance $ 174,225 $ 128,053 $ 49,919

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Summary of ARRIS' Unvested Restricted Stock Unit (Excluding Performance Related)	The following table summarizes ARRIS’s unvested restricted stock unit (excluding performance-related) transactions during the year ending December 31, 2017: Ordinary Shares Weighted Average Fair Value Unvested at December 31, 2016 6,495,049 $ 24.04 Granted 3,793,925 27.54 Vested (2,571,398 ) 22.98 Forfeited (357,232 ) 24.77 Unvested at December 31, 2017 7,360,344 26.18 The fair value of the restricted share units is estimated on the date of grant using a Monte Carlo Simulation model. Market Performance Weighted Average Grant Date Fair Value Unvested at December 31, 2016 1,640,410 $ 29.52 Granted 524,350 24.13 Vested (211,689 ) 41.12 Performance adjustment (608,011 ) 35.85 Unvested at December 31, 2017 1,345,060 22.73

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Schedule of Change in Projected Benefit Obligations, Fair Value of Plan Assets and the Funded Status of Pension Plan	The following table summarizes the change in projected benefit obligations, fair value of plan assets and the funded status of pension plan for the years ended December 31, 2017 and 2016 (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Change in Projected Benefit Obligation: Projected benefit obligation at beginning of year $ 45,270 $ 42,999 $ 35,706 $ 36,372 Service cost — — 664 703 Interest cost 1,733 1,751 486 614 Actuarial loss 3,868 2,024 121 81 Benefit payments (1,651 ) (1,504 ) — (1,041 ) Settlements — — (1,596 ) (1,626 ) Foreign currency — — 2,755 603 Projected benefit obligation at end of year $ 49,220 $ 45,270 $ 38,136 $ 35,706 Change in Plan Assets: Fair value of plan assets at beginning of year $ 18,510 $ 13,516 $ 19,011 $ 9,232 Actual return on plan assets 949 751 183 131 Company contributions 1,856 5,747 1,259 11,120 Expenses and benefits paid from plan assets (1,651 ) (1,504 ) — — Settlements — — (1,596 ) (1,626 ) Foreign currency — — 1,467 154 Fair value of plan assets at end of year (1) $ 19,664 $ 18,510 $ 20,324 $ 19,011 Funded Status: Funded status of plan $ (29,557 ) $ (26,760 ) $ (17,812 ) $ (16,695 ) Unrecognized actuarial loss (gain) 13,981 10,720 (1,857 ) (2,038 ) Net amount recognized $ (15,576 ) $ (16,040 ) $ (19,669 ) $ (18,733 ) (1) In addition to the U.S. pension plan assets, ARRIS has established two rabbi trusts to further fund the pension obligations of the Executive Chairman and certain executive officers of $25.4 million as of December 31, 2017 and $21.2 million as of December 31, 2016, and are included in Investments on the Consolidated Balance Sheets.
Schedule of Amounts Recognized in Statement of Financial Position	Amounts recognized in the statement of financial position consist of (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Current liabilities $ (17,670 ) $ (399 ) $ — $ — Noncurrent liabilities (11,887 ) (26,361 ) (17,812 ) (16,695 ) Accumulated other comprehensive loss (income) (1) 13,981 10,720 (1,857 ) (2,038 ) Total $ (15,576 ) $ (16,040 ) $ (19,669 ) $ (18,733 ) (1) The accumulated other comprehensive income on the Consolidated Balance Sheets as of December 31, 2017 and 2016 is presented net of income tax.
Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) are as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Net (gain) loss $ 3,814 $ 2,068 $ (3,203 ) $ 261 $ 225 $ 813 Amortization of net gain (loss) (552 ) (544 ) (834 ) 78 248 (529 ) Adjustments — — — — 1,849 — Foreign currency — — — — 31 — Total recognized in other (loss) comprehensive income $ 3,262 $ 1,524 $ (4,037 ) $ 339 $ 2,353 $ 284
Schedule of Information for Defined Benefit Plans with Accumulated Benefit Obligations in Excess of Plan Assets	Information for defined benefit plans with accumulated benefit obligations or projected benefit obligation in excess of plan assets as of December 31, 2017 and 2016 is as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2017 2016 Accumulated benefit obligation in excess of plan assets: Accumulated benefit obligation $ 49,220 $ 45,270 $ 29,741 $ 27,551 Fair value of plan assets 19,664 18,510 20,324 19,011 Projected benefit obligation in excess of plan assets: Projected benefit obligation 49,220 $ 45,270 38,136 35,706 Fair value of plan assets 19,664 18,510 20,324 19,011
Net Periodic Pension Cost	Net periodic pension cost for 2017, 2016 and 2015 for pension and supplemental benefit plans includes the following components (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Service cost $ — $ — $ — $ 664 $ 703 $ 738 Interest cost 1,733 1,751 1,716 486 614 661 Return on assets (expected) (895 ) (795 ) (839 ) (323 ) (275 ) (176 ) Amortization of net actuarial loss(gain) (1) 552 544 834 (78 ) (70 ) 529 Settlement charge — — — — (178 ) — Adjustments — — — — (1,849 ) — Foreign currency — — — — (31 ) — Net periodic pension cost $ 1,390 $ 1,500 $ 1,711 $ 749 $ (1,086 ) $ 1,752 (1) ARRIS uses the allowable 10% corridor approach to determine the amount of gains/losses subject to amortization in pension cost. Gains/losses are amortized on a straight-line basis over the average future service of members expected to receive benefits
Assumptions Used	The assumptions used to determine the benefit obligations as of December 31, 2017 and 2016 are as set forth below (in percentage): U.S. Pension Plans Non-U.S. Pension Plans 2017 2016 2015 2017 2016 2015 Weighted-average assumptions used to determine benefit obligations: Discount rate 3.45 % 3.90 % 4.15 % 1.10 % 1.30 % 1.70 % Rate of compensation increase N/A N/A N/A N/A N/A N/A Weighted-average assumptions used to determine net periodic benefit costs: Discount rate 3.90 % 4.15 % 3.75 % 1.30 % 1.70 % 1.90 % Expected long-term rate of return on plan assets 5.00 % 6.00 % 6.00 % 1.40 % 1.60 % 2.00 % Rate of compensation increase (1) N/A N/A N/A 3.00 % 3.00 % 3.00 % (1) Represent an average rate for the non-U.S.
Expected Benefit Payments Related to Defined Benefit Pension Plans	As of December 31, 2017, the expected benefit payments related to the Company’s defined benefit pension plans during the next ten years are as follows (in thousands): U.S. Pension Plans Non-U.S. Pension Plans 2018 $ 18,890 $ 2,840 2019 1,770 2,122 2020 1,820 2,169 2021 1,920 2,273 2022 1,920 1,905 2023 — 2027 10,200 10,737
Summary of Weighted Average Pension Asset Allocations	The following table summarizes the weighted average pension asset allocations as December 31, 2017 and 2016: U.S. Pension Plans Target Actual 2017 2016 2017 2016 Equity securities — 30% - 40% — 30 % Debt securities — 0% - 5% — 2 % Cash and cash equivalents 80% - 100% 60% - 70% 100 % 68 %
Schedule of Pension Plan Assets by Category and by level	The following table summarizes the Company’s U.S. pension plan assets by category and by level (as described in Note 7 Fair Value Measurements December 31, 2017 Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ 19,662 $ 2 $ — $ 19,664 Total $ 19,662 $ 2 $ — $ 19,664 December 31, 2016 Level 1 Level 2 Level 3 Total Cash and cash equivalents (1) $ — $ 12,723 $ — $ 12,723 Equity securities (2) : U.S. large cap 1,123 — — 1,123 U.S. mid cap 1,118 — — 1,118 U.S. small cap 1,118 — — 1,118 International 1,685 — — 1,685 Fixed income securities (3) : 743 — — 743 Total $ 5,787 $ 12,723 $ — $ 18,510 (1) Cash and cash equivalents, which are used to pay benefits and administrative expenses, are held in money market and stable value fund. (2) Equity securities consist of mutual funds and the underlying investments are indexes. Investments in mutual funds are valued at the net asset value per share multiplied by the number of shares held. (3) Fixed income securities consist of bonds securities in mutual funds, and are valued at the net asset value per share multiplied by the number of shares held.

Accumulated Other Comprehensi52

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2017
Changes in Accumulated Other Comprehensive Income (loss) by Component Net of Taxes	The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of taxes, for the year ended December 31, 2017 and 2016 (in thousands): Available-for Derivative Pension Cumulative Total Balance as of December 31, 2015 $ 133 $ (6,781 ) $ (4,195 ) $ (1,803 ) $ (12,646 ) Other comprehensive (loss) income before reclassifications (11 ) 1,631 (2,934 ) 11,096 9,782 Amounts reclassified from accumulated other comprehensive income (loss) 15 5,821 319 — 6,155 Net current-period other comprehensive income (loss) 4 7,452 (2,615 ) 11,096 15,937 Balance as of December 31, 2016 $ 137 $ 671 $ (6,810 ) $ 9,293 $ 3,291 Other comprehensive (loss) income before reclassifications 471 3,790 (2,487 ) (2,050 ) (276 ) Amounts reclassified from accumulated other comprehensive income (loss) 54 1,128 304 — 1,486 Net current-period other comprehensive income (loss) 525 4,918 (2,183 ) (2,050 ) 1,210 Balance as of December 31, 2017 $ 662 $ 5,589 $ (8,993 ) $ 7,243 $ 4,501

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Future Minimum Operating Lease Payments under Non-Cancelable Leases	Future minimum operating lease payments under non-cancelable Operating Leases 2018 $ 37,661 2019 31,864 2020 27,288 2021 24,502 2022 20,558 Thereafter 42,768 Less sublease income (4,674 ) Total minimum lease payments $ 179,967

Summary Quarterly Consolidate54

Summary Quarterly Consolidated Financial Information (unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Schedule of Quarterly Consolidated Financial Information	The following table summarizes ARRIS’s quarterly consolidated financial information (in thousands, except per share data): Quarters in 2017 Ended, March 31, June 30, September 30 December 31, (1)(2)(3)(4) Net sales $ 1,483,105 $ 1,664,170 $ 1,728,524 $ 1,738,593 Gross margin 337,257 403,357 431,155 494,470 Operating (loss) income (4,084 ) 55,636 84,157 (12,698 ) Net (loss) income attributable to ARRIS International plc. $ (39,098 ) $ 30,336 $ 88,320 $ 12,469 Net (loss) income per basic share $ (0.21 ) $ 0.16 $ 0.47 $ 0.07 Net (loss) income per diluted share $ (0.21 ) $ 0.16 $ 0.47 $ 0.07 Quarters in 2016 Ended March 31, June 30, September 30 December 31, (5)(6) Net sales $ 1,614,706 $ 1,730,044 $ 1,725,145 $ 1,759,223 Gross margin 384,032 444,734 442,850 436,001 Operating (loss) income (86,490 ) 33,388 91,313 72,506 Net (loss) income attributable to ARRIS International plc $ (202,573 ) $ 84,228 $ 48,162 $ 88,283 Net (loss) income per diluted share $ (1.06 ) $ 0.44 $ 0.25 $ 0.46 Net (loss) income per basic share $ (1.06 ) $ 0.44 $ 0.25 $ 0.46 Year 2017 (1) For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants. (2) In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest. (3) In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees. (4) During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition. Year 2016 (5) For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants. (6) In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4 th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4 th quarter.

Organization and Basis of Pre55

Organization and Basis of Presentation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Segment	Jan. 04, 2016£ / shares
Organization And Basis Of Presentation [Line Items]
Number of business segments operated | Segment	3
Pace Plc
Organization And Basis Of Presentation [Line Items]
Per share price in cash consideration | £ / shares		£ 1.325
Common stock conversion Basis		0.1455

Summary of Significant Accoun56

Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017USD ($)Segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Original maturity period of cash, cash equivalents and investments		Three months or less
Shipping and handling costs		$ 12,600,000	$ 4,300,000	$ 5,600,000
Amortization of landlord funded tenant improvements		12,100,000	6,600,000	4,500,000
Depreciation expense, including amortization of capital leases		$ 88,200,000	90,600,000	71,800,000
Number of reporting units | Segment		3
Goodwill impairment		$ 51,200,000	0	0
Impairment of intangible assets				0
Impairment of definite lived intangible assets		0	0	0
Advertising and sales promotion expense		$ 17,500,000	$ 19,600,000	$ 16,800,000
Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of customer		2	3
Customer 1 [Member] | Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		19.00%	20.00%
Customer 2 [Member] | Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage		14.00%	17.00%
Customer 3 [Member] | Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage			14.00%
In-process Research and Development
Summary Of Significant Accounting Policies [Line Items]
In-process R&D written off			$ 2,200,000
Cloud Tv Reporting Unit
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment	$ 51,200,000	$ 51,200,000
Cloud Tv Reporting Unit | Trade Names [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of intangible assets	3,800,000	3,800,000
Non-controlling Interest | Cloud Tv Reporting Unit
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment	17,900,000	$ 17,900,000
Non-controlling Interest | Cloud Tv Reporting Unit | Trade Names [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of intangible assets	$ 1,300,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Equity method investment, ownership percentage	20.00%	20.00%
Finite lived intangible assets, useful life		1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%
Finite lived intangible assets, useful life		13 years
Building and Building Improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
Building and Building Improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		40 years
Machinery and Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years
Machinery and Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		10 years
Internal Use Software | Minimum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		2 years
Internal Use Software | Maximum
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life		7 years

Summary of Changes in Reserve f

Summary of Changes in Reserve for Allowance for Doubtful Accounts, Sales Returns and Allowances (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of fiscal year	$ 15,253	$ 9,975	$ 6,392
(Credit) charges to expenses	(566)	1,386	2,997
(Write-offs) recoveries, net	(4,457)	3,892	586
Balance at end of fiscal year	$ 10,230	$ 15,253	$ 9,975

Impact of Recently Issued Acc58

Impact of Recently Issued Accounting Standards - Additional Information (Detail) - USD ($)		3 Months Ended		12 Months Ended
		Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated deficit		$ (225,881,000)			$ (225,881,000)	$ (132,013,000)
Income tax (benefit) expense					(44,921,000)	15,131,000	$ 22,594,000
Increase in non-current deferred tax assets		115,436,000			115,436,000	298,757,000
Decrease in other current prepaid asset		26,644,000			26,644,000	21,163,000
Goodwill impairment					51,200,000	0	$ 0
Cumulative effect adjustment	[1]				10,974,000
Cloud Tv Reporting Unit
Goodwill impairment		51,200,000			51,200,000
Cloud Tv Reporting Unit | Non-controlling Interest
Goodwill impairment		$ 17,900,000			17,900,000
Accounting Standards Update 2016-09 [Member]
Income tax (benefit) expense					$ (2,600,000)
Accounting Standards Update 2016-16 [Member]
Income tax (benefit) expense			$ 8,000,000
Adjustments | Accounting Standards Update 2016-09 [Member]
Accumulated deficit						8,900,000
Adjustments | Accounting Standards Update 2016-16 [Member]
Accumulated deficit						2,000,000
Increase in non-current deferred tax assets						4,500,000
Decrease in other current prepaid asset						$ (2,500,000)
Scenario Forecast | Minimum
Cumulative effect adjustment				$ 1,000
Scenario Forecast | Maximum
Cumulative effect adjustment				$ 10,000,000
[1]	Cumulative adjustment related to the adoption of accounting standards, see Note 3 Impact of Recently Adopted Accounting Standards of Notes to the Consolidated Financial Statements for additional information.

Business Acquisitions - Additio

Business Acquisitions - Additional information (Detail) - USD ($) $ in Thousands, shares in Millions	Dec. 01, 2017	Jan. 04, 2016	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Goodwill			$ 2,278,512	$ 2,278,512	$ 2,278,512	$ 2,016,169
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Equity, Class of Treasury Stock [Line Items]
Business acquisition, cash consideration	$ 761,000
Goodwill	318,034		318,034	318,034	318,034
Acquired intangible assets	472,500		472,500	472,500	472,500
Trade accounts receivable, Fair value			32,900	32,900	32,900
Accounts receivable, gross contractual amount			33,800	33,800	33,800
Accounts receivable, uncollectible receivable amount			900	900	900
Acquisition related costs					74,500
Revenue contributed			$ 45,700
Aggregate stock and cash consideration	$ 761,013
Ruckus Wireless and ICX Switch business (Ruckus Networks) | Broadcom Limited [Member]
Equity, Class of Treasury Stock [Line Items]
Cash settlement of stock-based awards				$ 61,500	$ 61,500
Pace Plc
Equity, Class of Treasury Stock [Line Items]
Business acquisition, cash consideration		$ 638,800
Acquired intangible assets		1,258,700
Aggregate stock and cash consideration		$ 2,074,000
Business acquisition potential stock issue, shares		47.7			47.7
Business acquisition non-cash consideration		$ 300

Summary of Fair Value of Consid

Summary of Fair Value of Consideration Transferred (Detail) - Ruckus Wireless and ICX Switch business (Ruckus Networks) $ in Thousands	Dec. 01, 2017USD ($)
Business Acquisition [Line Items]
Cash consideration	$ 779,743
Estimated working capital adjustments	(16,371)
Non-cash consideration	(2,359)	[1]
Total consideration transferred	$ 761,013
[1]	Non-cash consideration represents $2.4 million settlement of preexisting payables and receivables between Ruckus Networks and ARRIS.

Summary of Fair Value of Cons61

Summary of Fair Value of Consideration Transferred (Parenthetical) (Detail) $ in Thousands	Dec. 01, 2017USD ($)
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Business Acquisition [Line Items]
Business acquisition non-cash consideration	$ 2,359	[1]
[1]	Non-cash consideration represents $2.4 million settlement of preexisting payables and receivables between Ruckus Networks and ARRIS.

Summary of Estimated Fair Value

Summary of Estimated Fair Values of Net Assets Acquired (Detail) - USD ($) $ in Thousands	Dec. 01, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 2,278,512	$ 2,016,169
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Business Acquisition [Line Items]
Total estimated consideration transferred	$ 761,013
Cash and cash equivalents	18,958
Accounts receivables	32,940
Inventories	48,897
Prepaids and other	4,836
Property, plant & equipment	33,500
Intangible assets	472,500	472,500
Other assets	39,528
Accounts payable and accrued liabilities	(17,216)
Other current liabilities	(9,666)
Deferred revenue	(47,718)
Noncurrent deferred income tax liabilities, net	(92,233)
Other noncurrent liabilities	(41,347)
Net assets acquired	442,979
Goodwill	$ 318,034	$ 318,034

Acquired Intangible Assets (Det

Acquired Intangible Assets (Detail) - Ruckus Wireless and ICX Switch business (Ruckus Networks) - USD ($) $ in Thousands	Dec. 01, 2017	Dec. 31, 2017
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 472,500	$ 472,500
Customer Contracts & Relationships
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 100,000
Estimated Weighted Average Life (years)	7 years
Technology and Patents
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 265,000
Estimated Weighted Average Life (years)	6 years 9 months 18 days
Trademarks and Trade Names
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 22,500
Estimated Weighted Average Life (years)	10 years
Backlog
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 35,000
Estimated Weighted Average Life (years)	6 months
In-process Research and Development
Business Acquisition [Line Items]
Preliminary Estimated Fair value	$ 50,000

Carrying Amount of Goodwill (De

Carrying Amount of Goodwill (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill acquired (disposed), net	$ 318,034,000	$ 989,437,000
Impairment	(51,200,000)	0	$ 0
Currency translation		10,423,000
Other	(4,491,000)	2,346,000
Balance as of end of period	2,278,512,000	2,016,169,000
Goodwill	2,708,368,000	2,394,825,000	1,392,619,000
Accumulated impairment losses	(429,856,000)	(378,656,000)	(378,656,000)
CPE
Goodwill [Line Items]
Goodwill acquired (disposed), net		698,106,000
Currency translation		10,483,000
Other	(4,491,000)
Balance as of end of period	1,386,680,000	1,391,171,000
Goodwill	1,386,680,000	1,391,171,000	682,582,000
N & C
Goodwill [Line Items]
Goodwill acquired (disposed), net		291,331,000
Impairment	(51,200,000)
Currency translation		(60,000)
Other		2,346,000
Balance as of end of period	573,798,000	624,998,000
Goodwill	1,003,654,000	1,003,654,000	710,037,000
Accumulated impairment losses	(429,856,000)	$ (378,656,000)	$ (378,656,000)
Enterprise
Goodwill [Line Items]
Goodwill acquired (disposed), net	318,034,000
Balance as of end of period	318,034,000
Goodwill	$ 318,034,000

Goodwill and Intangible Asset65

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	Jan. 04, 2016	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 01, 2017
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill impairment			$ 51,200,000	$ 0	$ 0
Goodwill		$ 2,278,512,000	2,278,512,000	2,016,169,000
Impairment of indefinite-lived assets					$ 0
Foreign currency translation gain				(10,423,000)
In-process Research and Development
Schedule Of Goodwill And Intangible Assets [Line Items]
In-process R&D written off				2,200,000
Cloud Tv Reporting Unit
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill impairment		51,200,000	51,200,000
Cloud Tv Reporting Unit | Trademarks and Trade Names
Schedule Of Goodwill And Intangible Assets [Line Items]
Impairment of indefinite-lived assets			3,800,000
Cloud Tv Reporting Unit | Non-controlling Interest
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill impairment		17,900,000	17,900,000
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill		318,034,000	318,034,000			$ 318,034,000
Acquired intangible assets		$ 472,500,000	$ 472,500,000			472,500,000
Ruckus Wireless and ICX Switch business (Ruckus Networks) | In-process Research and Development
Schedule Of Goodwill And Intangible Assets [Line Items]
Acquired intangible assets						$ 50,000,000
Pace Plc
Schedule Of Goodwill And Intangible Assets [Line Items]
Goodwill acquired				989,500,000
Goodwill disposed of				$ (100,000)
Acquired intangible assets	$ 1,258,700,000
Foreign currency translation gain	8,300,000
Pace Plc | Technology Licenses
Schedule Of Goodwill And Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 5,400,000

Gross Carrying Amount and Accum

Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	$ 3,316,835	$ 2,921,538
Gross Amount	3,370,935	2,931,538
Definite-lived intangible assets, Accumulated Amortization	1,599,573	1,254,360
Definite-lived intangible assets, Net Book Value	1,717,262	1,667,178
Net Book Value	1,771,362	1,677,178
Indefinite-lived intangible assets, Gross Amount	54,100	10,000
Indefinite-lived intangible assets	54,100	10,000
Trademarks and Trade Names
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Amount		5,900
Indefinite-lived intangible assets		5,900
In-process Research and Development
Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross Amount	54,100	4,100
Indefinite-lived intangible assets	54,100	4,100
Customer relationships
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	1,672,470	1,572,947
Definite-lived intangible assets, Accumulated Amortization	780,655	624,719
Definite-lived intangible assets, Net Book Value	891,815	948,228
Developed technology, patents & licenses
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	1,521,893	1,248,719
Definite-lived intangible assets, Accumulated Amortization	771,200	571,808
Definite-lived intangible assets, Net Book Value	750,693	676,911
Trademarks and Trade Names
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	87,472	83,472
Definite-lived intangible assets, Accumulated Amortization	41,885	41,433
Definite-lived intangible assets, Net Book Value	45,587	42,039
Backlog
Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Amount	35,000	16,400
Definite-lived intangible assets, Accumulated Amortization	5,833	$ 16,400
Definite-lived intangible assets, Net Book Value	$ 29,167

Schedule of Amortization of Int

Schedule of Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 382,416	$ 404,475	$ 231,590
Cost of sales
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	3,174	2,963	670
Selling, general and administrative expenses
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	3,835	4,048	3,480
Amortization of acquired intangible assets
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 375,407	$ 397,464	$ 227,440

Estimated Total Amortization Ex

Estimated Total Amortization Expense for Finite-Lived Intangibles for Next Five Fiscal Years (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Finite Lived Intangible Assets Amortization Expense [Line Items]
2,018	$ 402,005
2,019	326,807
2,020	315,077
2,021	180,290
2,022	146,499
Thereafter	$ 344,484

Investments (Detail)

Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Available-for-sale securities	$ 23,874	$ 115,553
Noncurrent Assets:
Available-for-sale securities	5,718	15,391
Equity method investments	22,021	22,688
Cost method investments	10,092	6,841
Other investments	33,251	28,012
Total classified as non-current assets	71,082	72,932
Total	$ 94,956	$ 188,485

Amortized Costs and Fair Value

Amortized Costs and Fair Value of Available-for-sale Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	$ 28,869	$ 130,936
Available-for-sale securities, Gross Unrealized Gains	844	662
Available-for-sale securities, Gross Unrealized Losses	(121)	(654)
Available-for-sale securities, Fair Value	29,592	130,944
Available-for-sale securities, Less than 12 months, Fair Value	29,592	130,944
Available-for-sale securities, Less than 12 months, Unrealized Losses	(121)	(654)
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	29,592	130,944
Total, Unrealized Losses	(121)	(654)
Certificates of deposit (non-U.S.)
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	12,809	87,372
Available-for-sale securities, Fair Value	12,809	87,372
Available-for-sale securities, Less than 12 months, Fair Value	12,809	87,372
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	12,809	87,372
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	11,003	34,175
Available-for-sale securities, Gross Unrealized Gains	86	35
Available-for-sale securities, Gross Unrealized Losses	(24)	(77)
Available-for-sale securities, Fair Value	11,065	34,133
Available-for-sale securities, Less than 12 months, Fair Value	11,065	34,133
Available-for-sale securities, Less than 12 months, Unrealized Losses	(24)	(77)
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	11,065	34,133
Total, Unrealized Losses	(24)	(77)
Short-term bond fund
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs		5,046
Available-for-sale securities, Gross Unrealized Gains		69
Available-for-sale securities, Gross Unrealized Losses		(69)
Available-for-sale securities, Fair Value		5,046
Available-for-sale securities, Less than 12 months, Fair Value		5,046
Available-for-sale securities, Less than 12 months, Unrealized Losses		(69)
Available-for-sale securities, 12 months or more, Fair Value		0
Available-for-sale securities, 12 months or more, Unrealized Losses		0
Total, Fair Value		5,046
Total, Unrealized Losses		(69)
Corporate obligations
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	13	3
Available-for-sale securities, Fair Value	13	3
Available-for-sale securities, Less than 12 months, Fair Value	13	3
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	13	3
Money markets
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	38	54
Available-for-sale securities, Fair Value	38	54
Available-for-sale securities, Less than 12 months, Fair Value	38	54
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	38	54
Mutual funds
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	65	94
Available-for-sale securities, Gross Unrealized Gains	14	28
Available-for-sale securities, Gross Unrealized Losses		(21)
Available-for-sale securities, Fair Value	79	101
Available-for-sale securities, Less than 12 months, Fair Value	79	101
Available-for-sale securities, Less than 12 months, Unrealized Losses		(21)
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	79	101
Total, Unrealized Losses		(21)
Other investments
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Costs	4,941	4,192
Available-for-sale securities, Gross Unrealized Gains	744	530
Available-for-sale securities, Gross Unrealized Losses	(97)	(487)
Available-for-sale securities, Fair Value	5,588	4,235
Available-for-sale securities, Less than 12 months, Fair Value	5,588	4,235
Available-for-sale securities, Less than 12 months, Unrealized Losses	(97)	(487)
Available-for-sale securities, 12 months or more, Fair Value	0	0
Available-for-sale securities, 12 months or more, Unrealized Losses	0	0
Total, Fair Value	5,588	4,235
Total, Unrealized Losses	$ (97)	$ (487)

Sale and_or Maturity of Availab

Sale and/or Maturity of Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales	$ 165,301	$ 25,932	$ 157,965
Gross gains	$ 16	$ 33	305
Gross losses			$ (452)

Contractual Maturities of Avail

Contractual Maturities of Available-for-Sale Securities (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Amortized Cost
Within 1 year	$ 23,812
After 1 year through 5 years	0
After 5 years through 10 years	0
After 10 years	5,057
Total	28,869
Fair Value
Within 1 year	23,874
After 1 year through 5 years	0
After 5 years through 10 years	0
After 10 years	5,718
Total	$ 29,592

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Equity method investments	$ 22,021	$ 22,688
Future funding contributions	15,600
Other-than-temporary impairment losses recognized for the period	$ 2,800	$ 12,300
Minimum
Investment Holdings [Line Items]
Engineering services provided, percentage	20.00%
Maximum
Investment Holdings [Line Items]
Engineering services provided, percentage	30.00%

Summary of Ownership Structure

Summary of Ownership Structure and Ownership Percentage of Non-consolidated Investments (Detail)	Dec. 31, 2017
MPEG LA
Schedule of Equity Method Investments [Line Items]
Equity method ownership, percentage	8.40%
Music Choice
Schedule of Equity Method Investments [Line Items]
Equity method ownership, percentage	18.20%
Conditional Access Licensing ("CAL")
Schedule of Equity Method Investments [Line Items]
Equity method ownership, percentage	49.00%
Combined Conditional Access Development ("CCAD")
Schedule of Equity Method Investments [Line Items]
Equity method ownership, percentage	50.00%

Investment Assets (Excluding Eq

Investment Assets (Excluding Equity and Cost Method Investments) and Derivatives Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Derivative Financial Instruments, Liabilities | Interest rate derivatives
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of liabilities, recurring basis	$ (4,024)	$ (9,006)
Derivative Financial Instruments, Liabilities | Foreign currency contracts
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of liabilities, recurring basis	(8,802)	(3,671)
Derivative Financial Instruments, Assets | Interest rate derivatives
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	10,156	7,860
Derivative Financial Instruments, Assets | Foreign currency contracts
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	405	7,369
Certificates of deposit (non-U.S.)
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	12,809	87,372
Corporate bonds
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	11,065	34,133
Short-term bond fund
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis		5,046
Corporate obligations
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	13	3
Money markets
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	38	54
Mutual funds
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	79	101
Other Investments
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	5,588	4,235
Level 1 | Short-term bond fund
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis		5,046
Level 1 | Money markets
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	38	54
Level 1 | Mutual funds
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	79	101
Level 2 | Derivative Financial Instruments, Liabilities | Interest rate derivatives
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of liabilities, recurring basis	(4,024)	(9,006)
Level 2 | Derivative Financial Instruments, Liabilities | Foreign currency contracts
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of liabilities, recurring basis	(8,802)	(3,671)
Level 2 | Derivative Financial Instruments, Assets | Interest rate derivatives
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	10,156	7,860
Level 2 | Derivative Financial Instruments, Assets | Foreign currency contracts
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	405	7,369
Level 2 | Certificates of deposit (non-U.S.)
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	12,809	87,372
Level 2 | Corporate bonds
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	11,065	34,133
Level 2 | Corporate obligations
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	13	3
Level 2 | Other Investments
Fair Value Assets Liabilities Measured On Recurring Basis [Line Items]
Fair value of assets, recurring basis	$ 5,588	$ 4,235

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairment		$ 51,200,000	$ 0	$ 0
Impairment of intangible assets				$ 0
Impairment of intangible assets including goodwill		55,000,000	$ 2,200,000
Cloud Tv Reporting Unit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairment	$ 51,200,000	51,200,000
Cloud Tv Reporting Unit | Trade Names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of intangible assets	3,800,000	3,800,000
Non-controlling Interest | Cloud Tv Reporting Unit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairment	17,900,000	17,900,000
Impairment of intangible assets including goodwill		$ 19,300,000
Non-controlling Interest | Cloud Tv Reporting Unit | Trade Names [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of intangible assets	$ 1,300,000

Derivative Instruments and He77

Derivative Instruments and Hedging Activities - Additional Information (Detail) € in Millions, £ in Millions, ZAR in Millions, CAD in Millions, AUD in Millions	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2017CAD	Dec. 31, 2017AUD	Dec. 31, 2017GBP (£)	Dec. 31, 2017EUR (€)	Dec. 31, 2017ZAR
Derivatives, Fair Value [Line Items]
Hedge ineffectiveness in earnings	$ 0	$ 0	$ 0
Amount estimated reclassified as an increase to interest expense	500,000
Fair value of derivatives in net asset position	$ 6,100,000
Maximum time frame for derivatives	15 months
2.25% Interest Rate Swaps Matures on March 31, 2020 | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Variable-rate debt upon conversion			$ 625,000,000
Fixed interest rate			2.25%
Maturity date	Mar. 31, 2020
Interest rate swap | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 1,075,000,000
Forward Contracts | Euro Member Countries, Euro
Derivatives, Fair Value [Line Items]
Derivative notional amount | €							€ 70
Forward Contracts | Australia, Dollars
Derivatives, Fair Value [Line Items]
Derivative notional amount | AUD					AUD 50
Forward Contracts | Canada, Dollars
Derivatives, Fair Value [Line Items]
Derivative notional amount | CAD				CAD 65
Forward Contracts | United Kingdom, Pounds
Derivatives, Fair Value [Line Items]
Derivative notional amount | £						£ 70
Forward Contracts | South Africa, Rand
Derivatives, Fair Value [Line Items]
Derivative notional amount | ZAR								ZAR 656.9
Term Loan A-1 Facility | 0.98% Interest Rate Swaps Matures on March 31, 2020 | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Variable-rate debt upon conversion		$ 450,000,000
Fixed interest rate		0.98%
Maturity date	Mar. 31, 2020

Impact of Derivative Financial

Impact of Derivative Financial Instruments (Detail) - Interest Expense - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Gain (loss) Recognized in OCI on Derivatives (Effective Portion)	$ 5,587	$ 2,103	$ (13,256)
Amounts Reclassified from Accumulated OCI into Income (Effective Portion)	$ 1,663	$ 7,512	$ 7,495

Fair Values of Derivative Desig

Fair Values of Derivative Designated as Hedging Instruments Recorded in Consolidated Balance Sheet (Detail) - Interest rate derivatives - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 3,590	$ 222
Other assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	6,566	8,043
Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	(3,053)	(2,989)
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ (971)	$ (6,421)

Fair Values of Derivative Not D

Fair Values of Derivative Not Designated as Hedging Instruments Recorded in Consolidated Balance Sheet (Detail) - Foreign currency contracts - Derivatives Not Designated as Hedging Instruments - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 405	$ 7,369
Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	(8,202)	$ (3,671)
Other long-term liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ (600)

Change in Fair Values of Deriva

Change in Fair Values of Derivative Not Designated as Hedging Instruments Recorded in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Foreign currency contracts | (Gain)/loss on foreign currency | Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Loss on foreign currency	$ 25,339	$ 5,909	$ 7,597

Information Regarding Changes i

Information Regarding Changes in ARRIS's Aggregate Product Warranty Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Product Warranty Liability [Line Items]
Beginning balance	$ 88,187	$ 49,027
Warranty reserve at acquisition	1,700	43,723
Accruals related to warranties (including changes in assumptions)	36,379	51,947
Settlements made (in cash or in kind)	(50,177)	(56,510)
Ending balance	$ 76,089	$ 88,187

Segment Information - Additiona

Segment Information - Additional Information (Detail) - Segment	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Number of segments managed	3
International Customers | Customer Concentration Risk | Sales
Segment Reporting Information [Line Items]
Percentage of sales	34.20%	28.10%	28.80%

Segment Information (Detail)

Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2017	[1],[2],[3],[4]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	[5],[6]	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 1,738,593		$ 1,728,524	$ 1,664,170	$ 1,483,105	$ 1,759,223		$ 1,725,145	$ 1,730,044	$ 1,614,706	$ 6,614,392	$ 6,829,118	$ 4,798,332
Direct Contribution											1,310,435	1,366,352	1,036,006
Corporate and unallocated costs											(658,659)	(697,834)	(568,336)
Amortization of intangible assets											(375,407)	(397,464)	(227,440)
Impairment of goodwill and intangible assets											(55,000)	(2,200)
Integration, acquisition, restructuring and other											(98,357)	(158,137)	(29,277)
Operating income	$ (12,698)		$ 84,157	$ 55,636	$ (4,084)	$ 72,506		$ 91,313	$ 33,388	$ (86,490)	123,012	110,717	210,953
Interest expense											87,088	79,817	70,936
Loss on investments											11,066	21,194	6,220
Loss (gain) on foreign currency											9,757	(13,982)	20,761
Interest income											(7,975)	(4,395)	(2,379)
Other expense (income), net											1,873	3,991	8,362
Income before income taxes											21,203	24,092	107,053
Operating Segments | CPE
Segment Reporting Information [Line Items]
Net sales											4,475,670	4,747,445	3,136,585
Direct Contribution											497,986	684,744	548,840
Operating Segments | N&C
Segment Reporting Information [Line Items]
Net sales											2,094,113	2,111,708	1,661,594
Direct Contribution											806,355	681,608	487,166
Operating Segments | Enterprise
Segment Reporting Information [Line Items]
Net sales											45,749
Direct Contribution											6,094
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales											(1,140)	(30,035)	153
Segment Reconciling Items
Segment Reporting Information [Line Items]
Amortization of intangible assets											(375,407)	(397,464)	(227,440)
Integration, acquisition, restructuring and other											$ (98,357)	$ (158,137)	$ (29,277)
[1]	During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.
[2]	For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.
[3]	In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.
[4]	In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.
[5]	For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants.
[6]	In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, the Company evaluated the impact of the 4th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4th quarter.

Composition of Corporate and Un

Composition of Corporate and Unallocated Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Corporate and unallocated costs	$ 658,659	$ 697,834	$ 568,336
Cost of sales
Segment Reporting Information [Line Items]
Corporate and unallocated costs	90,791	150,588	56,311
Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Corporate and unallocated costs	389,753	375,747	349,993
Research and development expenses
Segment Reporting Information [Line Items]
Corporate and unallocated costs	$ 178,115	$ 171,499	$ 162,032

Summary of Net Intangible Asset

Summary of Net Intangible Assets and Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Goodwill	$ 2,278,512	$ 2,016,169
Intangible assets, net	1,771,362	1,677,178
CPE
Segment Reporting Information [Line Items]
Goodwill	1,386,680	1,391,171
Intangible assets, net	807,314	1,064,692
N&C
Segment Reporting Information [Line Items]
Goodwill	573,798	624,998
Intangible assets, net	501,998	$ 612,486
Enterprise
Segment Reporting Information [Line Items]
Goodwill	318,034
Intangible assets, net	$ 462,050

Summary of Company's Revenues b

Summary of Company's Revenues by Products and Services (Detail) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2017

[1],[2],[3],[4]

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2017

Dec. 31, 2016

[5],[6]

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

Revenue, Major Customer [Line Items]

Net sales

$ 1,738,593

$ 1,728,524

$ 1,664,170

$ 1,483,105

$ 1,759,223

$ 1,725,145

$ 1,730,044

$ 1,614,706

$ 6,614,392

$ 6,829,118

$ 4,798,332

Operating Segments | CPE

Revenue, Major Customer [Line Items]

Net sales

4,475,670

4,747,445

3,136,585

Operating Segments | CPE | Broadband

Revenue, Major Customer [Line Items]

Net sales

1,808,600

1,683,491

1,452,164

Operating Segments | CPE | Video

Revenue, Major Customer [Line Items]

Net sales

2,667,070

3,063,954

1,684,421

Operating Segments | N&C

Revenue, Major Customer [Line Items]

Net sales

2,094,113

2,111,708

1,661,594

Operating Segments | N&C | Network & Cloud

Revenue, Major Customer [Line Items]

Net sales

1,747,936

1,789,097

1,390,283

Operating Segments | N&C | Software And Services [Member]

Revenue, Major Customer [Line Items]

Net sales

346,177

322,611

271,311

Operating Segments | Enterprise

Revenue, Major Customer [Line Items]

Net sales

45,749

Operating Segments | Other Segments

Revenue, Major Customer [Line Items]

Net sales

$ (1,140)

$ (30,035)

$ 153

[1]

During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.

[2]

For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.

[3]

In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.

[4]

In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.

[5]

For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants.

[6]

In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, the Company evaluated the impact of the 4th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4th quarter.

Summary of Sales to Customers (

Summary of Sales to Customers (Detail) - Customer Concentration Risk - Sales - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016		Dec. 31, 2015
Charter and affiliates
Revenue, Major Customer [Line Items]
Customers and affiliates	$ 985,237	$ 1,064,408	[1]	$ 960,497
Percentage of sales	14.90%	15.60%		20.00%
Comcast and affiliates
Revenue, Major Customer [Line Items]
Customers and affiliates	$ 1,479,415	$ 1,637,519	[1]	$ 1,007,376
Percentage of sales	22.40%	24.00%		21.00%
[1]	Revenues were reduced $30.2 million in 2016, as a result of warrants held by Charter and Comcast that are intended to incent additional purchases from them. (see Note 17 Warrants for additional information).

Summary of Sales to Customers89

Summary of Sales to Customers (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Charter and Comcast
Revenue, Major Customer [Line Items]
Reduction to net sales in connection with warrants	$ 0	$ 30.2

International Sales by Geograph

International Sales by Geographic Region (Detail) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2017

[1],[2],[3],[4]

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2017

Dec. 31, 2016

[5],[6]

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

$ 1,738,593

$ 1,728,524

$ 1,664,170

$ 1,483,105

$ 1,759,223

$ 1,725,145

$ 1,730,044

$ 1,614,706

$ 6,614,392

$ 6,829,118

$ 4,798,332

Domestic Operations | UNITED STATES

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

4,351,843

4,909,698

3,418,583

International

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

2,262,549

1,919,420

1,379,749

International | Americas, excluding U.S.

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

1,080,456

982,769

880,581

International | Asia Pacific

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

374,772

291,504

142,893

International | EMEA

International Long-Lived Assets by Geographic Region [Line Items]

Net sales

$ 807,321

$ 645,147

$ 356,275

[1]

During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.

[2]

For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.

[3]

In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.

[4]

In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.

[5]

For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants.

[6]

In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, the Company evaluated the impact of the 4th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4th quarter.

Summary of Plant and Equipment

Summary of Plant and Equipment by Geographic Region (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	$ 372,467	$ 353,377
Domestic Operations | UNITED STATES
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	250,866	220,397
International
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	121,601	132,980
International | Americas, excluding U.S.
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	12,746	12,838
International | Asia Pacific
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	85,236	81,655
International | EMEA
International Long-Lived Assets by Geographic Region [Line Items]
Long lived assets	$ 23,619	$ 38,487

Components of Inventory Net of

Components of Inventory Net of Reserves (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Inventory [Line Items]
Raw material	$ 149,328	$ 86,243
Work in process	5,416	3,877
Finished goods	670,467	461,421
Total inventories, net	$ 825,211	$ 551,541

Property, Plant and Equipment,

Property, Plant and Equipment, at Cost (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 740,421	$ 672,850
Less: Accumulated depreciation	(367,954)	(319,473)
Total property, plant and equipment, net	372,467	353,377
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	68,562	68,562
Buildings and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	205,534	163,333
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 466,325	$ 440,955

Summary of Changes to Restructu

Summary of Changes to Restructuring Accrual (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 30,129	$ 90
Restructuring charges	20,930	96,341
Cash payments / adjustments	(40,638)	(65,586)
Non-cash expense	(2,740)	(716)
Ending Balance	7,681	30,129
Employee severance & termination benefits
Restructuring Cost and Reserve [Line Items]
Beginning Balance	27,886	3
Restructuring charges	13,346	92,246
Cash payments / adjustments	(35,955)	(64,363)
Non-cash expense	(898)
Ending Balance	4,379	27,886
Contractual obligations and other
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2,243	87
Restructuring charges	5,742	3,379
Cash payments / adjustments	(4,683)	(1,223)
Ending Balance	3,302	2,243
Write-off of property, plant and equipment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,842	716
Non-cash expense	$ (1,842)	$ (716)

Restructuring, Acquisition an95

Restructuring, Acquisition and Integration - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)Facility	Dec. 31, 2017USD ($)FacilityEmployee	Dec. 31, 2016USD ($)Position	Dec. 31, 2015USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 20,930	$ 96,341
Acquisition expense	$ 61,500
Integration, acquisition and restructuring		98,357	158,137	$ 29,277
Ruckus Wireless and ICX Switch business (Ruckus Networks)
Restructuring Cost and Reserve [Line Items]
Acquisition expense		74,500	29,000	25,800
Ruckus Wireless and ICX Switch business (Ruckus Networks) | Broadcom Limited [Member]
Restructuring Cost and Reserve [Line Items]
Cash settlement of stock-based awards	$ 61,500	61,500
Employee severance & termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 13,346	$ 92,246
Total number of positions affected by the restructuring plan		195	1,545
Contractual obligations and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 5,742	$ 3,379
Leased properties, remaining expiration terms		2,021
Number of facilities | Facility	3	3
Write-off of property, plant and equipment
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 1,842	716
Integration Related
Restructuring Cost and Reserve [Line Items]
Integration, acquisition and restructuring		$ 2,900	$ 24,200	$ 1,600

Lease Financing Obligation - Ad

Lease Financing Obligation - Additional Information (Detail) - San Diego Office Complex $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2015USD ($)Building
Schedule of Finance Lease Obligations [Line Items]
Land and buildings, net book value		$ 71
Proceeds from sale of assets		$ 85.5
Number of building in sale and leaseback arrangement | Building		2
Loss from sale of land and building		$ (5.3)
Building One
Schedule of Finance Lease Obligations [Line Items]
Leasing back term		10 years
Leasing back term, description	The Company determined that the sale-leaseback of Building 1 did not qualify for sale-leaseback accounting due to continuing involvement that will exist for the 10-year lease term. Accordingly, the carrying amount of Building 1 will remain on the Company's balance sheet and will be depreciated over its remaining useful life with the proceeds reflected as a financing obligation.
Building Two | Maximum
Schedule of Finance Lease Obligations [Line Items]
Leasing back term		1 year

Payments Required on Lease Fina

Payments Required on Lease Financing Obligations (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Schedule of Finance Lease Obligations [Line Items]
2,018	$ 4,260
2,019	4,388
2,020	4,520
2,021	4,655
2,022	4,795
Thereafter through 2025	11,307
Total minimum lease payments	$ 33,925

Summary of Indebtedness and Lea

Summary of Indebtedness and Lease Financing Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt and Capital Lease Obligations [Line Items]
Current obligations	$ 88,370	$ 90,275
Current deferred financing fees and debt discount	(4,811)	(7,541)
Current portion of long-term debt and financing lease obligation	83,559	82,734
Lease finance obligation	2,134,932	2,197,964
Noncurrent deferred financing fees and debt discount	(18,688)	(17,955)
Long-term debt and financing lease obligation, net of current portion	2,116,244	2,180,009
Total	2,199,803	2,262,743
Term Loan A
Debt and Capital Lease Obligations [Line Items]
Current obligations	19,550	49,500
Noncurrent obligations	366,562	866,250
Term Loan A-1 Facility
Debt and Capital Lease Obligations [Line Items]
Current obligations	62,500	40,000
Noncurrent obligations	1,171,875	730,000
Term Loan B3 Facility
Debt and Capital Lease Obligations [Line Items]
Current obligations	5,450
Noncurrent obligations	535,463
Lease Finance obligation
Debt and Capital Lease Obligations [Line Items]
Current obligations	870	775
Lease finance obligation	$ 61,032	57,902
Term Loan B
Debt and Capital Lease Obligations [Line Items]
Noncurrent obligations		$ 543,812

Indebtedness - Additional Infor

Indebtedness - Additional Information (Detail) - USD ($)		Dec. 20, 2017	Oct. 17, 2017	Apr. 26, 2017	Jan. 04, 2016	Dec. 31, 2017	Dec. 31, 2016	Oct. 16, 2017
Term Loan B
Debt Instrument [Line Items]
Loan facility principal amount				$ 545,000,000
Term Loan B2 Facility
Debt Instrument [Line Items]
Debt instrument, maturity date				Apr. 30, 2024
Revolving Facility | AR Financing Program
Debt Instrument [Line Items]
Percentage of transaction fee and interest rate paid						1.23%
HSBC | AR Financing Program
Debt Instrument [Line Items]
Trade receivables as percentage of receivable advance					95.00%
Percentage of trade receivables to be remitted upon customer cash payments					5.00%
Accounts receivable outstanding under accounts receivable financing program							$ 0
Account receivable financing program,Termination date							Jun. 30, 2017
Second Amendment | Term Loan B2 Facility
Debt Instrument [Line Items]
Capitalized financing fees				$ 1,400,000
Original issuance discount				4,500,000
Expensed Amount of debt discount costs				4,500,000
Write off amount of debt discount costs				$ 1,300,000
Minimum | Term Loan B2 Facility | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.25%
Minimum | Term Loan B2 Facility | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.25%
Maximum | Term Loan B2 Facility | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				2.50%
Maximum | Term Loan B2 Facility | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate				1.50%
Maximum | HSBC | AR Financing Program
Debt Instrument [Line Items]
Trade receivables					$ 50,000,000
Senior Secured Credit Facilities
Debt Instrument [Line Items]
Mandatory payments related to senior secured credit facilities						$ 91,700,000
Senior Secured Credit Facilities | Term Loan A | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate						1.75%
Senior Secured Credit Facilities | Revolving Facility | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	[1]					1.75%
Senior Secured Credit Facilities | Third Amendment
Debt Instrument [Line Items]
Cash that can be used to offset indebtedness			$ 500,000,000					$ 200,000,000
Senior Secured Credit Facilities | Third Amendment | Term Loan A
Debt Instrument [Line Items]
Debt instrument, maturity date			Oct. 17, 2022
Senior Secured Credit Facilities | Third Amendment | Revolving Facility
Debt Instrument [Line Items]
Debt instrument, maturity date			Oct. 17, 2022
Senior Secured Credit Facilities | Third Amendment | Refinancing Term Loan A
Debt Instrument [Line Items]
Line of credit facility			$ 391,000,000
Senior Secured Credit Facilities | Third Amendment | Refinancing Term Loan A1 Facility
Debt Instrument [Line Items]
Line of credit facility			1,250,000,000
Senior Secured Credit Facilities | Third Amendment | Refinancing Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility			$ 500,000,000
Senior Secured Credit Facilities | Fourth Amendment
Debt Instrument [Line Items]
Cash that can be used to offset indebtedness		$ 500,000,000
Senior Secured Credit Facilities | Fourth Amendment | Term Loan B
Debt Instrument [Line Items]
Loan facility principal amount		$ 542,300,000
Debt instrument, maturity date		Apr. 26, 2024
Senior Secured Credit Facilities | Minimum | Fourth Amendment | Term Loan B | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.00%
Senior Secured Credit Facilities | Minimum | Fourth Amendment | Term Loan B | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.00%
Senior Secured Credit Facilities | Maximum | Third Amendment
Debt Instrument [Line Items]
Consolidated net leverage ratio			400.00%
Senior Secured Credit Facilities | Maximum | Third Amendment | Fiscal Quarter Ending March 31, 2019
Debt Instrument [Line Items]
Consolidated net leverage ratio			375.00%
Senior Secured Credit Facilities | Maximum | Fourth Amendment | Term Loan B | LIBOR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.25%
Senior Secured Credit Facilities | Maximum | Fourth Amendment | Term Loan B | Prime Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.25%
[1]	Includes unused commitment fee of 0.30% and letter of credit fee of 1.75% not reflected in interest rate above.

Interes Rates on Senior Secured

Interes Rates on Senior Secured Credit Facilities (Detail) - Senior Secured Credit Facilities	12 Months Ended
	Dec. 31, 2017
Term Loan A
Debt Instrument [Line Items]
Debt instrument, interest rate at period end	3.32%
Term Loan A-1 Facility
Debt Instrument [Line Items]
Debt instrument, interest rate at period end	3.32%
Term Loan B3 Facility
Debt Instrument [Line Items]
Debt instrument, interest rate at period end	3.82%
LIBOR | Term Loan A
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
LIBOR | Term Loan A-1 Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%
LIBOR | Term Loan B3 Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.25%
LIBOR | Revolving Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.75%	[1]
[1]	Includes unused commitment fee of 0.30% and letter of credit fee of 1.75% not reflected in interest rate above.

Interes Rates on Senior Secu101

Interes Rates on Senior Secured Credit Facilities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017
Debt Instrument [Line Items]
Unused commitment fee	0.30%
Letter of credit fee	1.75%

Scheduled Maturities of Contrac

Scheduled Maturities of Contractual Debt Obligations (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Debt Instrument [Line Items]
2,018	$ 87,500
2,019	87,500
2,020	87,500
2,021	87,500
2,022	1,297,737
Thereafter	$ 513,663

Reconciliation of Numerators an

Reconciliation of Numerators and Denominators of Basic and Diluted Earnings Per Share Computations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2017	[1],[2],[3],[4]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	[5],[6]	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Basic:
Net income attributable to ARRIS International plc.	$ 12,469		$ 88,320	$ 30,336	$ (39,098)	$ 88,283		$ 48,162	$ 84,228	$ (202,573)	$ 92,027		$ 18,100		$ 92,181
Weighted average shares outstanding											187,133		190,701		146,388
Basic earnings per share	$ 0.07		$ 0.47	$ 0.16	$ (0.21)	$ 0.46		$ 0.25	$ 0.44	$ (1.06)	$ 0.49	[7]	$ 0.09	[7]	$ 0.63	[7]
Diluted:
Net income attributable to ARRIS International plc.	$ 12,469		$ 88,320	$ 30,336	$ (39,098)	$ 88,283		$ 48,162	$ 84,228	$ (202,573)	$ 92,027		$ 18,100		$ 92,181
Weighted average shares outstanding											187,133		190,701		146,388
Net effect of dilutive shares											2,483		1,484		2,971
Total											189,616		192,185		149,359
Diluted earnings per share	$ 0.07		$ 0.47	$ 0.16	$ (0.21)	$ 0.46		$ 0.25	$ 0.44	$ (1.06)	$ 0.49	[7]	$ 0.09	[7]	$ 0.62	[7]
[1]	During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.
[2]	For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.
[3]	In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.
[4]	In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.
[5]	For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants.
[6]	In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, the Company evaluated the impact of the 4th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4th quarter.
[7]	Calculated based on net income attributable to shareowners of ARRIS International plc.

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail)	Jan. 04, 2016USD ($)shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016shares	Dec. 31, 2015shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from the computation of diluted earnings per share		1,100,000	900,000	6,800,000
Ordinary shares related to the vesting of restricted stock units		2,600,000	2,300,000
Warrants vested		0	2,200,000
Pace Plc
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Business combination potential stock issue, shares	47,700,000	47,700,000
Business combination potential stock issue, value | $		$ 1,434,700,000
Business combination, common stock conversion ratio	0.1455
Business combination, stock issued during period, value, per each share | $	$ 30.08

Warrants - Additional Informati

Warrants - Additional Information (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)$ / sharesshares	Dec. 31, 2016USD ($)Agreementshares
Class of Warrant or Right [Line Items]
Number of Warrant and Registration Rights Agreements | Agreement		2
Warrants vested and outstanding	2,200,000
Warrants exercise price | $ / shares	$ 26.14
Expected dividend yield	0.00%
Charter and Comcast
Class of Warrant or Right [Line Items]
Reduction to net sales in connection with warrants | $	$ 0	$ 30.2
Minimum
Class of Warrant or Right [Line Items]
Ordinary shares issuable under our outstanding Warrant program in 2018	1,000,000
Maximum
Class of Warrant or Right [Line Items]
Ordinary shares issuable under our outstanding Warrant program in 2018	2,500,000
Weighted Average
Class of Warrant or Right [Line Items]
Warrants exercise price | $ / shares	$ 24.56
Warrants | Maximum
Class of Warrant or Right [Line Items]
Aggregate number of shares purchase		14,000,000

Income (Loss) Before Income Tax

Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Before Income Taxes [Line Items]
U.S	$ (159,951)	$ (149,605)	$ 47,063
Income before income taxes	21,203	24,092	107,053
UNITED KINGDOM
Income Before Income Taxes [Line Items]
Foreign	(64,177)	(36,300)	(5,321)
Other Foreign
Income Before Income Taxes [Line Items]
Foreign	$ 245,331	$ 209,997	$ 65,311

Components of Income Tax Expens

Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Components Of Income Tax Expense Benefit [Line Items]
U.S.	$ 3,530	$ 47,025	$ 2,141
Current Income Tax Expense	29,544	160,399	17,176
U.S.	(49,671)	(105,735)	5,119
Deferred Income Tax Expense (Benefit), Total	(74,465)	(145,268)	5,418
Income tax expense (benefit)	(44,921)	15,131	22,594
UNITED KINGDOM
Components Of Income Tax Expense Benefit [Line Items]
Foreign	667	81,822	559
Foreign	(22,254)	(23,177)	(30)
Other Foreign
Components Of Income Tax Expense Benefit [Line Items]
Foreign	25,347	31,552	14,476
Foreign	$ (2,540)	$ (16,356)	$ 329

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Line Items]
Effective Income Tax Rate			19.25%	20.00%	35.00%
Tax Cuts and Jobs Act of 2017 (the "Act"), income tax benefit	$ (22,500)
Tax Cuts and Jobs Act of 2017 (the "Act"), provisional amount related to the remeasurement of certain deferred tax assets and liabilities	22,300
Tax Cuts and Jobs Act of 2017 (the "Act"), one-time transition tax on the mandatory deemed repatriation of foreign earnings	200
Tax Cuts and Jobs Act of 2017 (the "Act"), cumulative foreign earnings	32,400		$ 32,400
Deferred tax liability	333,044		333,044	$ 458,256
Income tax examination, Increase (decrease) in liability from prior year	(29,600)		(29,600)	(28,400)
Unrecognized tax benefits net of offsetting assets	148,600		148,600	108,700
Liability related to uncertain tax position inclusive interest and penalties	178,200		178,200	137,200
Net acquired uncertain tax position			37,900
Anticipated payment of tax liabilities related to interest and penalty accrual	4,000		4,000	$ 9,200
Unrecognized tax benefits arising from U.S. Federal and state tax			$ 15,600
Scenario Forecast
Income Taxes [Line Items]
Effective Income Tax Rate		21.00%
UNITED KINGDOM
Income Taxes [Line Items]
Statutory foreign income tax expense (benefit)			19.25%	20.00%
ISRAEL
Income Taxes [Line Items]
Earnings exempted associated with foreign subsidiary	18,600		$ 18,600
Foreign Subsidiaries
Income Taxes [Line Items]
Deferred tax liability	$ 2,700		$ 2,700

Reconciliation of U.S. Statutor

Reconciliation of U.S. Statutory Federal Income Tax Rate and Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Statutory Federal Tax Rate [Line Items]
Statutory income tax rate	19.25%	20.00%	35.00%
Effects of:
State income taxes, net of federal benefit	11.00%	(16.60%)	5.20%
Acquired deferred tax assets			5.80%
U.S. domestic manufacturing deduction	(0.90%)	(12.00%)
Facilitative transaction costs	54.20%	22.00%
Research and development tax credits	(119.70%)	(90.60%)	(25.10%)
Withholding taxes (U.K. entities)	12.40%	245.50%
U.K. stamp duty		9.40%
Subpart F income		4.00%	4.80%
Changes in valuation allowance	35.10%	6.00%	(26.60%)
Foreign tax credits	29.50%	(14.00%)	(20.70%)
Non-deductible officer compensation	4.90%		5.30%
Benefit of other foreign tax regimes	(170.60%)	(135.40%)
Recapture of dual consolidated losses			1.10%
Taiwan gain			34.30%
Change in tax rate	(105.00%)
Uncertain tax positions	(13.10%)	88.90%	(1.70%)
Other, net	5.00%	(13.50%)	8.70%
Effective Income Tax Rate Reconciliation, Percent, Total	(211.85%)	62.80%	21.10%
Non-US
Effects of:
Foreign tax rate differential			(5.00%)
Other Foreign
Effects of:
Foreign tax rate differential	26.10%	(50.90%)

Significant Components of Net D

Significant Components of Net Deferred Income Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets
Inventory costs	$ 29,453	$ 63,756
Property, plant and equipment		2,789
Accrued employee benefits	34,472	41,246
Accrued operating expenses	24,904	42,544
Reserves	16,434	26,731
Investments	8,796	667
Loss carryforwards	91,832	67,645
Research and development and other credits	164,841	118,113
Capitalized research and development	83,224	177,594
Other	17,379	50,171
Total deferred income tax assets	471,335	591,256
Deferred income tax liabilities:
Property, plant and equipment	(571)
Other liabilities	(7,190)	(6,656)
Goodwill and intangible assets	(325,283)	(451,600)
Total deferred income tax liabilities	(333,044)	(458,256)
Net deferred income tax assets	138,291	133,000
Valuation allowance	(91,743)	(57,772)	$ (87,788)	$ (118,629)
Net deferred income tax assets	$ 46,548	$ 75,228

Significant Attributes of Defer

Significant Attributes of Deferred Tax Assets (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Carryforwards and tax credits		$ 91,832	$ 67,645
Tax credit carryforwards		$ 164,841	118,113
Operating Loss Carryforward expiration description	[1]	Varies
Domestic Tax Authority
Carryforwards and tax credits	[2]	$ 27,405	30,009
Domestic Tax Authority | Research Tax Credit Carryforward
Tax credit carryforwards		103,581	84,711
Domestic Tax Authority | Other Tax Credit Carryforward
Tax credit carryforwards		$ 5,742	3,075
Tax credit carryforwards date		Dec. 31, 2027
State and Local Jurisdiction | Georgia
Carryforwards and tax credits		$ 15,948	4,737
State and Local Jurisdiction | Pennsylvania
Carryforwards and tax credits		17,687	13,899
State and Local Jurisdiction | Other US States
Carryforwards and tax credits		12,236	4,495
State and Local Jurisdiction | Other US States | Research Tax Credit Carryforward
Tax credit carryforwards		21,310	16,545
State and Local Jurisdiction | California | Research Tax Credit Carryforward
Tax credit carryforwards		$ 34,208	13,782
Tax credit carryforwards expiration description		Indefinite
Foreign Tax Authority
Carryforwards and tax credits		$ 18,556	$ 14,505
Minimum | Domestic Tax Authority
Operating loss carryforwards date	[2]	Dec. 31, 2018
Minimum | Domestic Tax Authority | Research Tax Credit Carryforward
Tax credit carryforwards date		Dec. 31, 2018
Minimum | State and Local Jurisdiction | Georgia
Operating loss carryforwards date		Dec. 31, 2018
Minimum | State and Local Jurisdiction | Pennsylvania
Operating loss carryforwards date		Dec. 31, 2018
Minimum | State and Local Jurisdiction | Other US States
Operating loss carryforwards date		Dec. 31, 2018
Minimum | State and Local Jurisdiction | Other US States | Research Tax Credit Carryforward
Tax credit carryforwards date		Dec. 31, 2018
Maximum | Domestic Tax Authority
Operating loss carryforwards date	[2]	Dec. 31, 2037
Maximum | Domestic Tax Authority | Research Tax Credit Carryforward
Tax credit carryforwards date		Dec. 31, 2037
Maximum | State and Local Jurisdiction | Georgia
Operating loss carryforwards date		Dec. 31, 2037
Maximum | State and Local Jurisdiction | Pennsylvania
Operating loss carryforwards date		Dec. 31, 2037
Maximum | State and Local Jurisdiction | Other US States
Operating loss carryforwards date		Dec. 31, 2037
Maximum | State and Local Jurisdiction | Other US States | Research Tax Credit Carryforward
Tax credit carryforwards date		Dec. 31, 2037
[1]	Canadian NOLs expire within 16 years and all other material foreign NOLs have an indefinite carryforward life.
[2]	Gross of tax effect U.S. Federal operating loss carryforwards are $130.5 million for the year ended December 31, 2017 and $85.7 million for the year ended December 31, 2016.

Significant Attributes of De112

Significant Attributes of Deferred Tax Assets (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Domestic Tax Authority
Operating loss carryforward gross tax effect	$ 130.5	$ 85.7
Foreign Tax Authority | Subsidiary Two
Net operating loss carry forwards related to subsidiary, expiration period	16 years

Significant Components of ARRIS

Significant Components of ARRIS's Valuation Allowance (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation Allowance [Line Items]
Valuation allowance	$ (91,743)	$ (57,772)	$ (87,788)	$ (118,629)
Domestic Tax Authority
Valuation Allowance [Line Items]
Valuation allowance, other	(4,241)	(16,792)
Domestic Tax Authority | NOL
Valuation Allowance [Line Items]
Valuation allowance, NOL	(8,578)	(8,064)
State and Local Jurisdiction | Georgia
Valuation Allowance [Line Items]
Valuation allowance, NOL	(15,008)	(3,464)
State and Local Jurisdiction | Pennsylvania
Valuation Allowance [Line Items]
Valuation allowance, NOL	(10,068)	(6,596)
State and Local Jurisdiction | Other US States
Valuation Allowance [Line Items]
Valuation allowance, NOL	(8,988)	(3,265)
Valuation allowance, R&D	(15,606)	(10,438)
State and Local Jurisdiction | California
Valuation Allowance [Line Items]
Valuation allowance, R&D	(18,773)
Foreign Tax Authority
Valuation Allowance [Line Items]
Valuation allowance, NOL	$ (10,481)	$ (9,153)

Deferred Tax Asset Valuation Al

Deferred Tax Asset Valuation Allowance (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Valuation Allowance [Line Items]
Beginning balance	$ 57,772	$ 87,788	$ 118,629
Additions	52,680	17,973	3,312
Reductions	(18,709)	(47,989)	(34,153)
Ending balance	$ 91,743	$ 57,772	$ 87,788

Reconciliation of Unrecognized

Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Beginning balance	$ 128,053	$ 49,919	$ 48,019
Gross increases - tax positions in prior period	6,783	8,068	1,599
Gross decreases - tax positions in prior period	(21,409)	(5,700)	(2,185)
Gross increases - current-period tax positions	24,551	27,774	9,578
Increases from acquired businesses	39,420	60,796
Changes related to foreign currency translation adjustment and remeasurement	1,545	(1,087)
Decreases relating to settlements with taxing authorities and other	(686)	(3,933)	(6,689)
Decreases due to lapse of statute of limitations	(4,032)	(7,784)	(403)
Ending balance	$ 174,225	$ 128,053	$ 49,919

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)ExecutiveOfficersOption$ / sharesshares	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued | shares	31,215,000
Allowance for flexibility in awards for every one share | $ / shares	$ 1.87
Vesting year one	2,016
Vesting year two	2,017
Vesting year three	2,018
Vesting year four	2,019
Number of executives that reached retirement age eligibility | ExecutiveOfficers	2
Term in which the returns are compared to determine number of shares	3 years
Minimum percentage of shares issued under comparative market performance restricted stock units awards	0.00%
Maximum percentage of shares issued under comparative market performance restricted stock units awards	200.00%
Percentage of shares achieved under comparative market performance restricted stock units awards	0.00%
Compensation expense measurement period	3 years
Expected dividend yield	0.00%
Unrecognized compensation cost	$ 152,200,000
Weighted average period of compensation cost	2 years 9 months 18 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares in target award outstanding | shares	672,530
Modified percentage in performance	200.00%
Number of shares issued at twice the performance percentage | shares	1,345,060
Fair value of vested restricted share units	$ 76,100,000	$ 52,300,000	$ 118,300,000
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum Percentage of base compensation applied towards purchase of common stock	10.00%
Maximum amount of purchase allowed for a participant	$ 25,000
Percentage of fair market value of exercise price	85.00%
Number of exercise price | Option	2
Minimum percentage of discount not recognized as compensation expense	5.00%
Percentage of discount on common stock	15.00%
Percentage of option held	85.00%
Risk free interest rate	1.20%	0.50%	0.10%
Volatility Factor	28.00%	37.00%	41.00%
Expected dividend yield	0.00%	0.00%	0.00%
Compensation expense related to ESPP	$ 4,800,000	$ 4,600,000	$ 5,100,000
Weighted average expected life	6 months	6 months	6 months
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Summary of Unvested Restricted

Summary of Unvested Restricted Stock and Share Units Transactions (Detail)	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Restricted Stock
Shares
Unvested, beginning balance | shares	6,495,049
Granted, shares | shares	3,793,925
Vested, shares | shares	(2,571,398)
Forfeited, shares | shares	(357,232)
Unvested, ending balance | shares	7,360,344
Weighted average grant date fair value
Weighted average grant date fair value, beginning balance | $ / shares	$ 24.04
Weighted average grant date fair value, granted | $ / shares	27.54
Weighted average grant date fair value, vested | $ / shares	22.98
Weighted average grant date fair value, forfeited | $ / shares	24.77
Weighted average grant date fair value, ending Balance | $ / shares	$ 26.18
Restricted Stock Units (RSUs)
Shares
Unvested, beginning balance | shares	1,640,410
Granted, shares | shares	524,350
Vested, shares | shares	(211,689)
Forfeited, shares | shares	(608,011)
Unvested, ending balance | shares	1,345,060
Weighted average grant date fair value
Weighted average grant date fair value, beginning balance | $ / shares	$ 29.52
Weighted average grant date fair value, granted | $ / shares	24.13
Weighted average grant date fair value, vested | $ / shares	41.12
Weighted average grant date fair value, forfeited | $ / shares	35.85
Weighted average grant date fair value, ending Balance | $ / shares	$ 22.73

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Estimated amounts to be amortized from AOCI into net periodic benefit costs	$ 1,000,000
Matching contribution made by the company	16,500,000	$ 16,400,000	$ 16,600,000
Expenses included in continuing operations for the matching contributions	300,000	200,000
Accrued balances of deferred retirement salary plan	1,500,000	1,600,000
Total expenses (income) included in continuing operations for the deferred retirement salary plan	200,000	400,000
Other long-term liabilities
Defined Benefit Plan Disclosure [Line Items]
Employee deferrals and matching contributions, net	3,100,000	3,000,000
Nonqualified Deferred Compensation Plan | Other long-term liabilities
Defined Benefit Plan Disclosure [Line Items]
Employee deferrals and matching contributions, net	5,700,000	4,200,000
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Minimum required funding contribution in 2017	0
Voluntary funding contribution	1,400,000	5,000,000
Estimate future contribution in 2018	0
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Voluntary funding contribution	1,200,000	$ 10,900,000
Estimate future contribution in 2018	$ 1,200,000

Schedule of Change in Projected

Schedule of Change in Projected Benefit Obligations, Fair Value of Plan Assets and the Funded Status of Pension Plan (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Change in Plan Assets:
Fair value of plan assets at beginning of year		$ 18,510
Fair value of plan assets at end of year				$ 18,510
U.S. Pension Plans
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year		45,270		42,999
Interest cost		1,733		1,751		$ 1,716
Actuarial loss		3,868		2,024
Benefit payments		(1,651)		(1,504)
Projected benefit obligation at end of year		49,220		45,270		42,999
Change in Plan Assets:
Fair value of plan assets at beginning of year		18,510	[1]	13,516
Actual return on plan assets		949		751
Company contributions		1,856		5,747
Expenses and benefits paid from plan assets		(1,651)		(1,504)
Fair value of plan assets at end of year		19,664	[1]	18,510	[1]	13,516
Funded Status:
Funded status of plan		(29,557)		(26,760)
Unrecognized actuarial loss (gain)	[2]	13,981		10,720
Net amount recognized		(15,576)		(16,040)
Non-U.S. Pension Plans
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year		35,706		36,372
Service cost		664		703		738
Interest cost		486		614		661
Actuarial loss		121		81
Benefit payments				(1,041)
Settlements		(1,596)		(1,626)
Foreign currency		2,755		603
Projected benefit obligation at end of year		38,136		35,706		36,372
Change in Plan Assets:
Fair value of plan assets at beginning of year		19,011	[1]	9,232
Actual return on plan assets		183		131
Company contributions		1,259		11,120
Settlements		(1,596)		(1,626)
Foreign currency		1,467		154
Fair value of plan assets at end of year		20,324	[1]	19,011	[1]	$ 9,232
Funded Status:
Funded status of plan		(17,812)		(16,695)
Unrecognized actuarial loss (gain)	[2]	(1,857)		(2,038)
Net amount recognized		$ (19,669)		$ (18,733)
[1]	In addition to the U.S. pension plan assets, ARRIS has established two rabbi trusts to further fund the pension obligations of the Executive Chairman and certain executive officers of $25.4 million as of December 31, 2017 and $21.2 million as of December 31, 2016, and are included in Investments on the Consolidated Balance Sheets.
[2]	The accumulated other comprehensive income on the Consolidated Balance Sheets as of December 31, 2017 and 2016 is presented net of income tax.

Schedule of Change in Projec120

Schedule of Change in Projected Benefit Obligations, Fair Value of Plan Assets and the Funded Status of Pension Plan (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Balance assets held in rabbi trust	$ 25.4	$ 21.2

Amounts Recognized in Statement

Amounts Recognized in Statement of Financial Position (Detail) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Current liabilities		$ (17,670)	$ (399)
Noncurrent liabilities		(11,887)	(26,361)
Accumulated other comprehensive loss (income)	[1]	13,981	10,720
Total		(15,576)	(16,040)
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Noncurrent liabilities		(17,812)	(16,695)
Accumulated other comprehensive loss (income)	[1]	(1,857)	(2,038)
Total		$ (19,669)	$ (18,733)
[1]	The accumulated other comprehensive income on the Consolidated Balance Sheets as of December 31, 2017 and 2016 is presented net of income tax.

Other Changes in Plan Assets an

Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net (gain) loss	$ 3,814	$ 2,068	$ (3,203)
Amortization of net gain (loss)	(552)	(544)	(834)
Total recognized in other (loss) comprehensive income	3,262	1,524	(4,037)
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net (gain) loss	261	225	813
Amortization of net gain (loss)	78	248	(529)
Adjustments		1,849
Foreign currency		31
Total recognized in other (loss) comprehensive income	$ 339	$ 2,353	$ 284

Information for Defined Benefit

Information for Defined Benefit Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 24, 2017	Dec. 31, 2016		Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation in excess of plan assets, Fair value of plan assets			$ 19,664	$ 18,510
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation in excess of plan assets, Accumulated benefit obligation	$ 49,220			45,270
Accumulated benefit obligation in excess of plan assets, Fair value of plan assets	19,664	[1]		18,510	[1]	$ 13,516
Projected benefit obligation in excess of plan assets, Projected benefit obligation	49,220			45,270
Projected benefit obligation in excess of plan assets, Fair value of plan assets	19,664			18,510
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation in excess of plan assets, Accumulated benefit obligation	29,741			27,551
Accumulated benefit obligation in excess of plan assets, Fair value of plan assets	20,324	[1]		19,011	[1]	$ 9,232
Projected benefit obligation in excess of plan assets, Projected benefit obligation	38,136			35,706
Projected benefit obligation in excess of plan assets, Fair value of plan assets	$ 20,324			$ 19,011
[1]	In addition to the U.S. pension plan assets, ARRIS has established two rabbi trusts to further fund the pension obligations of the Executive Chairman and certain executive officers of $25.4 million as of December 31, 2017 and $21.2 million as of December 31, 2016, and are included in Investments on the Consolidated Balance Sheets.

Components of Net Periodic Pens

Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost		$ 1,733	$ 1,751	$ 1,716
Return on assets (expected)		(895)	(795)	(839)
Amortization of net actuarial loss (gain)	[1]	552	544	834
Net periodic pension cost		1,390	1,500	1,711
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		664	703	738
Interest cost		486	614	661
Return on assets (expected)		(323)	(275)	(176)
Amortization of net actuarial loss (gain)	[1]	(78)	(70)	529
Settlement charge			(178)
Adjustments			(1,849)
Foreign currency			(31)
Net periodic pension cost		$ 749	$ (1,086)	$ 1,752
[1]	ARRIS uses the allowable 10% corridor approach to determine the amount of gains/losses subject to amortization in pension cost. Gains/losses are amortized on a straight-line basis over the average future service of members expected to receive benefits

Components of Net Periodic P125

Components of Net Periodic Pension Cost (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Actuarial gains losses amortization percentage	10.00%

Assumptions Used to Determine B

Assumptions Used to Determine Benefit Obligations (Detail)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average assumptions used to determine benefit obligations, Discount rate		3.45%	3.90%	4.15%
Weighted-average assumptions used to determine benefit obligations, Rate of compensation increase		0.00%	0.00%	0.00%
Weighted-average assumptions used to determine net periodic benefit costs, Discount rate		3.90%	4.15%	3.75%
Weighted-average assumptions used to determine net periodic benefit costs, Expected long-term rate of return on plan assets		5.00%	6.00%	6.00%
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average assumptions used to determine benefit obligations, Discount rate		1.10%	1.30%	1.70%
Weighted-average assumptions used to determine benefit obligations, Rate of compensation increase		0.00%	0.00%	0.00%
Weighted-average assumptions used to determine net periodic benefit costs, Discount rate		1.30%	1.70%	1.90%
Weighted-average assumptions used to determine net periodic benefit costs, Expected long-term rate of return on plan assets		1.40%	1.60%	2.00%
Weighted-average assumptions used to determine net periodic benefit costs, Rate of compensation increase	[1]	3.00%	3.00%	3.00%
[1]	Represent an average rate for the non-U.S. pension plans. Rate of compensation increase is 4.00% for indirect labor and 2.00% for direct labor for 2017, 2016 and 2015.

Assumptions Used to Determin127

Assumptions Used to Determine Benefit Obligations (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Indirect labors
Defined Benefit Plan Disclosure [Line Items]
Weighted-average assumptions used to determine net periodic benefit costs, Rate of compensation increase	4.00%	4.00%	4.00%
Direct labors
Defined Benefit Plan Disclosure [Line Items]
Weighted-average assumptions used to determine net periodic benefit costs, Rate of compensation increase	2.00%	2.00%	2.00%

Expected Benefit Payments Relat

Expected Benefit Payments Related to Defined Benefit Pension Plans (Detail) $ in Thousands	Dec. 31, 2017USD ($)
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2,018	$ 18,890
2,019	1,770
2,020	1,820
2,021	1,920
2,022	1,920
2023 - 2027	10,200
Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2,018	2,840
2,019	2,122
2,020	2,169
2,021	2,273
2,022	1,905
2023 - 2027	$ 10,737

Weighted Average Pension Asset

Weighted Average Pension Asset Allocations (Detail) - U.S. Pension Plans	Dec. 31, 2017	Dec. 31, 2016
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations		30.00%
Equity Securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations		30.00%
Equity Securities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations		40.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations		2.00%
Debt Securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations		0.00%
Debt Securities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations		5.00%
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Actual plan asset allocations	100.00%	68.00%
Cash and Cash Equivalents | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	80.00%	60.00%
Cash and Cash Equivalents | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	100.00%	70.00%

Pension Plan Asset by Category

Pension Plan Asset by Category and Level (Detail) - USD ($) $ in Thousands		Dec. 24, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 19,664	$ 18,510
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	19,664	12,723
U.S. Large Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,123
U.S. Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,118
U.S. Small Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,118
International
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,685
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]		743
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		19,662	5,787
Level 1 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	19,662
Level 1 | U.S. Large Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,123
Level 1 | U.S. Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,118
Level 1 | U.S. Small Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,118
Level 1 | International
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]		1,685
Level 1 | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]		743
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2	12,723
Level 2 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	$ 2	$ 12,723
[1]	Cash and cash equivalents, which are used to pay benefits and administrative expenses, are held in money market and stable value fund.
[2]	Equity securities consist of mutual funds and the underlying investments are indexes. Investments in mutual funds are valued at the net asset value per share multiplied by the number of shares held.
[3]	Fixed income securities consist of bonds securities in mutual funds, and are valued at the net asset value per share multiplied by the number of shares held.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (loss) by Component Net of Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 3,226,737	$ 1,840,961	$ 1,690,761
Net current-period other comprehensive income (loss)	1,210	15,950	(1,624)
Balance	3,184,034	3,226,737	1,840,961
Available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	137	133
Other comprehensive (loss) income before reclassifications	471	(11)
Amounts reclassified from accumulated other comprehensive income (loss)	54	15
Net current-period other comprehensive income (loss)	525	4
Balance	662	137	133
Derivative instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	671	(6,781)
Other comprehensive (loss) income before reclassifications	3,790	1,631
Amounts reclassified from accumulated other comprehensive income (loss)	1,128	5,821
Net current-period other comprehensive income (loss)	4,918	7,452
Balance	5,589	671	(6,781)
Pension obligations
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(6,810)	(4,195)
Other comprehensive (loss) income before reclassifications	(2,487)	(2,934)
Amounts reclassified from accumulated other comprehensive income (loss)	304	319
Net current-period other comprehensive income (loss)	(2,183)	(2,615)
Balance	(8,993)	(6,810)	(4,195)
Cumulative Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	9,293	(1,803)
Other comprehensive (loss) income before reclassifications	(2,050)	11,096
Net current-period other comprehensive income (loss)	(2,050)	11,096
Balance	7,243	9,293	(1,803)
Total
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	3,291	(12,646)
Other comprehensive (loss) income before reclassifications	(276)	9,782
Amounts reclassified from accumulated other comprehensive income (loss)	1,486	6,155
Net current-period other comprehensive income (loss)	1,210	15,937
Balance	$ 4,501	$ 3,291	$ (12,646)

Repurchases of Stock - Addition

Repurchases of Stock - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Share repurchase plans, authorized amount	$ 300,000,000	$ 300,000,000
Shares repurchased	7.5	7.4
Average price per share	$ 26.12	$ 24.09
Aggregate consideration	$ 197,000,000	$ 178,000,000
Remaining authorized amount for stock repurchases	$ 225,000,000
Maximum Period of shareholders approval	5 years

Future Minimum Operating Lease

Future Minimum Operating Lease Payments Under Non-Cancelable Leases (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Operating Leased Assets [Line Items]
2,018	$ 37,661
2,019	31,864
2,020	27,288
2,021	24,502
2,022	20,558
Thereafter	42,768
Less sublease income	(4,674)
Total minimum lease payments	$ 179,967

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Operating leases rent expense net	$ 26.4	$ 34	$ 26.9
Contractual obligations under agreements with non cancelable terms to purchase goods or services	772.1
Other assets
Loss Contingencies [Line Items]
Restricted cash associated with outstanding bank guarnatee	$ 1.5

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended
	Feb. 28, 2018	Dec. 31, 2017
Manufacturing facility in New Taipei City, Taiwan | Discontinued Operations, Held-for-sale [Member]
Subsequent Event [Line Items]
Facility, land, and manufacturing fixed assets, carrying amount		$ 57.9
Subsequent Event
Subsequent Event [Line Items]
Expected Restructuring charges to incur	$ 15
Subsequent Event | Manufacturing facility in New Taipei City, Taiwan | Discontinued Operations, Held-for-sale [Member]
Subsequent Event [Line Items]
Aggregate consideration value	81.3
Environmental obligation	7
Subsequent Event | Manufacturing facility in New Taipei City, Taiwan | Discontinued Operations, Held-for-sale [Member] | Land and Building [Member]
Subsequent Event [Line Items]
Facility, land, and manufacturing fixed assets, carrying amount	75
Subsequent Event | Manufacturing facility in New Taipei City, Taiwan | Discontinued Operations, Held-for-sale [Member] | Machinery and Equipment
Subsequent Event [Line Items]
Facility, land, and manufacturing fixed assets, carrying amount	$ 6.3

Summary Quarterly Consolidat136

Summary Quarterly Consolidated Financial Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended										12 Months Ended
	Dec. 31, 2017	[1],[2],[3],[4]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	[5],[6]	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Quarterly Financial Information [Line Items]
Net sales	$ 1,738,593		$ 1,728,524	$ 1,664,170	$ 1,483,105	$ 1,759,223		$ 1,725,145	$ 1,730,044	$ 1,614,706	$ 6,614,392		$ 6,829,118		$ 4,798,332
Gross margin	494,470		431,155	403,357	337,257	436,001		442,850	444,734	384,032	1,666,239		1,707,617		1,418,923
Operating (loss) income	(12,698)		84,157	55,636	(4,084)	72,506		91,313	33,388	(86,490)	123,012		110,717		210,953
Net (loss) income attributable to ARRIS Group, Inc.	$ 12,469		$ 88,320	$ 30,336	$ (39,098)	$ 88,283		$ 48,162	$ 84,228	$ (202,573)	$ 92,027		$ 18,100		$ 92,181
Net (loss) income per basic share	$ 0.07		$ 0.47	$ 0.16	$ (0.21)	$ 0.46		$ 0.25	$ 0.44	$ (1.06)	$ 0.49	[7]	$ 0.09	[7]	$ 0.63	[7]
Net (loss) income per diluted share	$ 0.07		$ 0.47	$ 0.16	$ (0.21)	$ 0.46		$ 0.25	$ 0.44	$ (1.06)	$ 0.49	[7]	$ 0.09	[7]	$ 0.62	[7]
[1]	During 2017, the Company recorded a foreign currency remeasurement loss of $10.5 million related primarily to a deferred income tax liability, in the United Kingdom. This deferred income tax liability is denominated in GBP. The foreign currency remeasurement gain derives from the remeasurement of the GBP deferred income tax liability to the USD, since the date of the acquisition.
[2]	For the quarter ended December 31, 2017, the Company recorded an increase to net sales of $8.1 million, to reverse previous quarters reduction in net sales in connection with Warrants.
[3]	In the fourth quarter of 2017, the Company recorded acquisition costs of $61.5 million related to the cash settlement of stock-based awards held by transferring employees.
[4]	In the fourth quarter of 2017, the Company recorded partial impairments of goodwill and indefinite-lived tradenames of $51.2 million and $3.8 million, respectively, acquired in our ActiveVideo acquisition and included as part of our Cloud TV reporting unit, of which $19.3 million is attributable to noncontrolling interest.
[5]	For the quarter ended December 31, 2016, the Company recorded $16.4 million as a reduction to net sales in connection with Warrants.
[6]	In the fourth quarter of 2016, the Company recorded foreign currency remeasurement gains of approximately $16 million related to the remeasurement of net deferred income tax liabilities in the U.K. where the functional currency is the U.S. dollar. Approximately $8 million resulted from changes in exchange rates prior to the 4th quarter in 2016 and was considered the correction of an immaterial misstatement of interim financial statements in 2016. In accordance with ASC Topic 250, Accounting Changes and Error Corrections, the Company evaluated the impact of the 4th quarter adjustment on its previously issued interim financial statements in 2016 and concluded that the results of operations for these periods were not materially misstated and accordingly the correction was recorded in the 4th quarter.
[7]	Calculated based on net income attributable to shareowners of ARRIS International plc.

Summary Quarterly Consolidat137

Summary Quarterly Consolidated Financial Information (Parenthetical) (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information [Line Items]
Impairments of goodwill			$ 51,200,000	$ 0	$ 0
Impairment of indefinite-lived tradenames					0
Acquisition costs related to the cash settlement of stock-based award held by transferring employees	$ 61,500,000
Foreign currency remeasurement gain (loss)			(9,757,000)	$ 13,982,000	$ (20,761,000)
Sales
Quarterly Financial Information [Line Items]
Reduction (increase) to net sales	(8,100,000)	$ 16,400,000
(Gain)/loss on foreign currency
Quarterly Financial Information [Line Items]
Correction of an immaterial misstatement from changes in exchange rates		8,000,000
Pace Plc
Quarterly Financial Information [Line Items]
Foreign currency remeasurement gain (loss)		$ 16,000,000
Cloud Tv Reporting Unit
Quarterly Financial Information [Line Items]
Impairments of goodwill	51,200,000		51,200,000
Cloud Tv Reporting Unit | Trade Names [Member]
Quarterly Financial Information [Line Items]
Impairment of indefinite-lived tradenames	3,800,000		3,800,000
UNITED KINGDOM
Quarterly Financial Information [Line Items]
Foreign currency remeasurement gain (loss)			(10,500,000)
Non-controlling Interest | Cloud Tv Reporting Unit
Quarterly Financial Information [Line Items]
Impairments of goodwill	17,900,000		$ 17,900,000
Impairment loss attributable to non controlling interest	19,300,000
Non-controlling Interest | Cloud Tv Reporting Unit | Trade Names [Member]
Quarterly Financial Information [Line Items]
Impairment of indefinite-lived tradenames	$ 1,300,000