Brocade Communications Systems (BRCD) 10-Q 4 Mar 16 2016 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Jan. 30, 2016	Feb. 26, 2016
Entity Information [Line Items]
Entity Registrant Name	BROCADE COMMUNICATIONS SYSTEMS INC
Entity Central Index Key	1,009,626
Current Fiscal Year End Date	--10-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jan. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		400,629,143
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Net revenues:
Product	$ 481,167	$ 486,238
Service	93,117	90,001
Total net revenues	574,284	576,239
Cost of revenues:
Product	144,097	149,926
Service	41,372	36,630
Total cost of revenues	185,469	186,556
Gross margin	388,815	389,683
Operating expenses:
Research and development	93,257	85,231
Sales and marketing	151,827	140,238
General and administrative	22,429	24,671
Amortization of intangible assets	902	138
Restructuring and other related benefits	(566)	0
Total operating expenses	267,849	250,278
Income from operations	120,966	139,405
Interest expense	(9,865)	(25,424)
Interest and other income (loss), net	669	(559)
Income before income tax	111,770	113,422
Income tax expense	18,124	26,155
Net income	$ 93,646	$ 87,267
Net income per share—basic	$ 0.23	$ 0.20
Net income per share—diluted	$ 0.23	$ 0.20
Shares used in per share calculation—basic	407,902	428,536
Shares used in per share calculation—diluted	415,085	439,156
Cash dividends declared per share	$ 0.045	$ 0.035

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Jan. 30, 2016	Jan. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 93,646	$ 87,267
Unrealized gains (losses) on cash flow hedges:
Change in unrealized gains and losses		(2,300)	(1,774)
Net gains and losses reclassified into earnings	[1]	626	603
Net unrealized losses on cash flow hedges		(1,674)	(1,171)
Foreign currency translation adjustments		(2,203)	(4,221)
Total other comprehensive loss		(3,877)	(5,392)
Total comprehensive income		$ 89,769	$ 81,875
[1]	For Condensed Consolidated Statements of Income classification of amounts reclassified from accumulated other comprehensive loss, see Note 10, “Derivative Instruments and Hedging Activities,” of the Notes to Condensed Consolidated Financial Statements.

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,392,009	$ 1,440,882
Accounts receivable, net of allowances for doubtful accounts of $1,741 and $1,838 as of January 30, 2016, and October 31, 2015, respectively	174,757	235,883
Inventories	42,586	40,524
Deferred tax assets	0	78,675
Prepaid expenses and other current assets	51,708	56,235
Total current assets	1,661,060	1,852,199
Property and equipment, net	442,158	439,224
Goodwill	1,617,041	1,617,161
Intangible assets, net	71,290	75,623
Non-current deferred tax assets	68,968	813
Other assets	48,378	51,133
Total assets	3,908,895	4,036,153
Current liabilities:
Accounts payable	74,019	98,143
Accrued employee compensation	112,951	142,075
Deferred revenue	228,582	244,622
Other accrued liabilities	69,287	77,524
Total current liabilities	484,839	562,364
Long-term debt, net of current portion	798,103	793,779
Non-current deferred revenue	74,571	72,065
Non-current income tax liability	47,651	47,010
Non-current deferred tax liabilities	0	24,024
Other non-current liabilities	2,538	3,376
Total liabilities	$ 1,407,702	$ 1,502,618
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value, 5,000 shares authorized, no shares issued and outstanding	$ 0	$ 0
Common stock, $0.001 par value, 800,000 shares authorized:
Issued and outstanding: 402,556 and 413,923 shares as of January 30, 2016, and October 31, 2015, respectively	403	414
Additional paid-in capital	1,529,313	1,632,984
Accumulated other comprehensive loss	(28,879)	(25,002)
Retained earnings	1,000,356	925,139
Total stockholders’ equity	2,501,193	2,533,535
Total liabilities and stockholders’ equity	$ 3,908,895	$ 4,036,153

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,741	$ 1,838
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	800,000	800,000
Common stock, shares issued	402,556	413,923
Common stock, shares outstanding	402,556	413,923

Condensed Consolidated Stateme6

Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Cash flows from operating activities:
Net income	$ 93,646	$ 87,267
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from stock-based compensation	(7,352)	(16,102)
Depreciation and amortization	22,812	19,575
Loss on disposal of property and equipment	207	444
Amortization of debt issuance costs and debt discount	4,325	1,056
Call premium cost and write-off of debt discount and debt issuance costs related to lenders that did not participate in refinancing	0	15,122
Provision for doubtful accounts receivable and sales allowances	(96)	2,403
Non-cash stock-based compensation expense	24,044	24,082
Changes in assets and liabilities, net of acquisitions:
Restricted cash	0	11,918
Accounts receivable	61,222	(17,256)
Inventories	(2,000)	1,155
Prepaid expenses and other assets	609	(5,746)
Deferred tax assets	16	494
Accounts payable	(23,859)	(8,776)
Accrued employee compensation	(38,993)	(77,033)
Deferred revenue	(13,535)	(2,190)
Other accrued liabilities	(7,991)	(1,423)
Restructuring liabilities	(855)	(761)
Net cash provided by operating activities	112,200	10,393
Cash flows from investing activities:
Purchases of property and equipment	(23,839)	(16,514)
Purchase of intangible assets	0	(7,750)
Proceeds from collection of note receivable	250	250
Net cash used in investing activities	(23,589)	(24,014)
Cash flows from financing activities:
Payment of debt issuance costs	0	(409)
Payment of principal related to capital leases	(83)	(1,154)
Common stock repurchases	(144,490)	(128,966)
Proceeds from issuance of common stock	19,482	21,036
Payment of cash dividends to stockholders	(18,429)	(15,106)
Proceeds from convertible notes	0	565,656
Purchase of convertible note hedge	0	(86,135)
Proceeds from issuance of warrants	0	51,175
Excess tax benefits from stock-based compensation	7,352	16,102
Increase in restricted cash	0	300,000
Net cash provided by (used in) financing activities	(136,168)	122,199
Effect of exchange rate fluctuations on cash and cash equivalents	(1,316)	(4,230)
Net increase (decrease) in cash and cash equivalents	(48,873)	104,348
Cash and cash equivalents, beginning of period	1,440,882	1,255,017
Cash and cash equivalents, end of period	1,392,009	1,359,365
Supplemental disclosures of cash flow information:
Cash paid for interest	10,891	17,333
Cash paid for income taxes	$ 4,798	$ 13,128

Basis Of Presentation

Basis Of Presentation	3 Months Ended
	Jan. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation Brocade Communications Systems, Inc. (“Brocade” or the “Company”) has prepared the accompanying Condensed Consolidated Financial Statements pursuant to the rules and regulations of the United States (“U.S.”) Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The Company’s Condensed Consolidated Balance Sheet as of October 31, 2015 , was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended October 31, 2015 . The accompanying Condensed Consolidated Financial Statements are unaudited but, in the opinion of the Company’s management, reflect all adjustments—including normal recurring adjustments—that management considers necessary for a fair presentation of these Condensed Consolidated Financial Statements. The results for the interim periods presented are not necessarily indicative of the results for the full fiscal year or any other future period. The Company’s fiscal year is a 52- or 53-week period ending on the last Saturday in October or the first Saturday in November, respectively. As is customary for companies that use the 52/53-week convention, every fifth year is a 53-week year. Fiscal year 2016 is a 52-week fiscal year and fiscal year 2015 was a 52-week fiscal year. The Company’s next 53-week fiscal year will be fiscal year 2019 and its next 14-week quarter will be the second quarter of fiscal year 2019. The Company’s Condensed Consolidated Financial Statements include the accounts of Brocade and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Use of Estimates in Preparation of Condensed Consolidated Financial Statements The preparation of the Company’s condensed consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported in the Company’s condensed consolidated financial statements and accompanying notes. Estimates are used for, but not limited to, revenue recognition, sales allowances and programs, allowance for doubtful accounts, stock-based compensation, acquisition purchase price allocations, warranty obligations, inventory valuation and purchase commitments, restructuring costs, incentive compensation, facilities lease losses, impairment of goodwill and other indefinite-lived intangible assets, litigation, income taxes, and investments. Actual results may differ materially from these estimates.

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	3 Months Ended
	Jan. 30, 2016
Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Summary of Significant Accounting Policies There have been no material changes in the Company’s significant accounting policies for the three months ended January 30, 2016 , as compared to those disclosed in Brocade’s Annual Report on Form 10-K for the fiscal year ended October 31, 2015 . New Accounting Pronouncements or Updates Recently Adopted In April 2014, the Financial Accounting Standards Board (“FASB”) issued an update to Accounting Standards Codification (“ASC”) 205, Presentation of Financial Statements , and ASC 360, Property, Plant, and Equipment: Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity . Under this update, a discontinued operation may include a component of an entity or a group of components of an entity, a business, or nonprofit activity. Only those disposals of components of an entity that represent a strategic shift that has, or will have, a major effect on an entity’s operations and financial results will be reported as discontinued operations in the financial statements. This update should be applied prospectively. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In April 2015, the FASB issued an update to ASC 835, Interest—Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs . Under this update, debt issuance costs are required to be presented as a direct deduction from the carrying amount of the related debt liability, consistent with the presentation of debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this update. This update should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In September 2015, the FASB issued an update to ASC 805, Business Combinations: Simplifying the Accounting Measurement-Period Adjustments . This update simplifies the accounting for adjustments made to provisional amounts recognized in a business combination by eliminating the requirement to retrospectively account for those adjustments. Under this update, the adjustments are recognized in the reporting period in which the adjustment amounts are determined. This update should be applied prospectively. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In November 2015, the FASB issued an update to ASC 740, Income Taxes: Balance Sheet Classification of Deferred Taxes . This update simplifies the presentation of current and noncurrent deferred tax liabilities and assets. Under this update, the deferred tax liabilities and assets are classified as noncurrent on the balance sheet. The update does not impact the current requirement that deferred tax liabilities and assets be offset and presented as a single amount. This update may be applied either prospectively or retrospectively. The Company adopted this update in the first quarter of fiscal year 2016 and has elected to apply this update prospectively. There was no material impact on the Company’s financial position, results of operations, or cash flows. Recent Accounting Pronouncements or Updates That Are Not Yet Effective In May 2014, the FASB issued an update to ASC 606, Revenue from Contracts with Customers , that will supersede virtually all existing revenue guidance. Under this update, an entity is required to recognize revenue upon transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. As such, an entity will need to use more judgment and make more estimates than under the current guidance. This update should be applied retrospectively either to each prior reporting period presented in the financial statements, or only to the most current reporting period presented in the financial statements with a cumulative effect adjustment recorded in retained earnings. In August 2015, the FASB issued an update to defer the effective date of this update by one year. This update becomes effective and will be adopted by the Company in the first quarter of fiscal year 2019. Early adoption is not permitted for reporting periods before the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this update on its consolidated financial statements. In April 2015, the FASB issued an update to ASC 350, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Fees Paid in Cloud Computing Arrangement . This update provides guidance on the accounting for fees paid in a cloud computing arrangement if the arrangement was determined to include a software license. This update will not change U.S. GAAP for a customer’s accounting for service contracts. This update may be applied either prospectively or retrospectively and will be adopted by the Company in the first quarter of fiscal year 2017. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated financial statements. In July 2015, the FASB issued an update to ASC 330, Inventory: Simplifying the Measurement of Inventory . Under this update, measurement of inventory is based on the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less the estimated cost of completion and disposal. This update does not apply to inventory that is measured using last-in, first-out or the retail inventory method. This update should be applied prospectively and will be adopted by the Company in the first quarter of fiscal year 2018. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated financial statements. In January 2016, the FASB issued an update to ASC 825, Financial Instruments—Overall: Recognition and Measurement of Financial Assets and Financial Liabilities . This update consists of eight provisions that provide guidance on the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. This update should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption and prospectively for equity investments without readily determinable fair values. This update becomes effective and will be adopted by the Company in the first quarter of fiscal year 2019. Early adoption is permitted for two of the eight provisions. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures. In February 2016, the FASB issued an update to ASC 842, Leases , that will supersede the existing lease guidance, including on-balance sheet recognition of operating leases for lessees. This update should be applied using a modified retrospective approach and will be adopted by the Company in the first quarter of fiscal year 2020. Early adoption is permitted. The Company is currently evaluating the impact of this update on its consolidated financial statements. Concentrations Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, and accounts receivable. Cash and cash equivalents are primarily maintained at five major financial institutions. Deposits held with banks may be redeemed upon demand and may exceed the amount of insurance provided on such deposits. A majority of the Company’s accounts receivable balance is derived from sales to original equipment manufacturer (“OEM”) partners in the computer storage and server industry. As of January 30, 2016 , one customer individually accounted for 10% of total accounts receivable and no other customers individually accounted for more than 10% of total accounts receivable. As of October 31, 2015 , one customer individually accounted for 17% of total accounts receivable and no other customers individually accounted for more than 10% of total accounts receivable. The Company performs ongoing credit evaluations of its customers and generally does not require collateral on accounts receivable balances. The Company has established reserves for credit losses and sales allowances. For the three months ended January 30, 2016 , two customers individually accounted for 20% and 14% of the Company’s total net revenues for a combined total of 34% of total net revenues. For the three months ended January 31, 2015 , three customers individually accounted for 20% , 14% , and 10% of the Company’s total net revenues for a combined total of 44% of total net revenues. The Company currently relies on single and limited sources for multiple key components used in the manufacture of its products. Additionally, the Company relies on multiple contract manufacturers (“CMs”) for the production of its products, including Hon Hai Precision Industry Co., Ltd. and Accton Technology Corporation. Although the Company uses standard parts and components for its products where possible, the Company’s CMs currently purchase, on the Company’s behalf, several key components used in the manufacture of products from single or limited supplier sources.

Acquisitions

Acquisitions	3 Months Ended
	Jan. 30, 2016
Business Combinations [Abstract]
Acquisitions	Acquisitions In March 2015, the Company completed its acquisition of two businesses to strengthen its software networking portfolio. The total aggregate purchase price of the acquisitions was $96.1 million , consisting of $95.5 million in cash consideration, which is gross of $0.1 million of cash acquired as part of the acquisitions, and $0.5 million in non-cash consideration. No direct acquisition costs or integration costs were recorded for the three months ended January 30, 2016 , or the three months ended January 31, 2015 . The results of operations for both acquisitions are included in the Company’s Condensed Consolidated Statements of Income from the respective dates of acquisition. The Company does not consider these acquisitions to be significant, individually or in the aggregate, to its results of operations or financial position. Therefore, the Company is not presenting pro-forma financial information of combined operations. In connection with these acquisitions, the Company allocated the total purchase consideration to the net assets acquired and liabilities assumed, including identifiable intangible assets, based on their respective fair values at the acquisition dates. In conjunction with the acquisitions, the Company granted restricted stock unit (“RSU”) awards and cash awards to transferring or continuing employees of the acquired businesses. These awards require the employees to continue providing services to the Company for the duration of the vesting or payout periods. The RSUs are accounted for as stock-based compensation expense and reported, as applicable, within “Cost of revenues,” “Research and development,” “Sales and marketing,” and “General and administrative” on the Company’s Condensed Consolidated Statements of Income . For the three months ended January 30, 2016 , the Company recognized $0.5 million of stock-based compensation expense related to these RSU awards. The cash awards are accounted for as employee compensation expense and reported within “Research and development” on the Company’s Condensed Consolidated Statements of Income . For the three months ended January 30, 2016 , the Company recognized $1.3 million of compensation expense related to these cash awards.

Goodwill And Intangible Assets

Goodwill And Intangible Assets	3 Months Ended
	Jan. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill And Intangible Assets	Goodwill and Intangible Assets The following table summarizes goodwill activity by reportable segment during the three months ended January 30, 2016 (in thousands): Storage Area Networking (“SAN”) Products Internet Protocol (“IP”) Networking Products Global Services Total Balance at October 31, 2015 Goodwill $ 176,325 $ 1,414,634 $ 155,416 $ 1,746,375 Accumulated impairment losses — (129,214 ) — (129,214 ) 176,325 1,285,420 155,416 1,617,161 Tax adjustments (1) (4 ) — — (4 ) Translation adjustments — (116 ) — (116 ) Balance at January 30, 2016 Goodwill 176,321 1,414,518 155,416 1,746,255 Accumulated impairment losses — (129,214 ) — (129,214 ) $ 176,321 $ 1,285,304 $ 155,416 $ 1,617,041 (1) The goodwill adjustments were primarily a result of tax benefits from the exercise of stock awards of acquired companies. The Company conducts its goodwill impairment test annually, as of the first day of the second fiscal quarter, and whenever events occur or facts and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. For the annual goodwill impairment test, the Company uses the income approach, the market approach, or a combination thereof to determine each reporting unit’s fair value. The income approach provides an estimate of fair value based on discounted expected future cash flows (“DCF”). The market approach provides an estimate of fair value by applying various observable market-based multiples to the reporting unit’s operating results and then applying an appropriate control premium. For the fiscal year 2015 annual goodwill impairment test, the Company used a combination of approaches to estimate each reporting unit’s fair value. At the time that the fiscal year 2015 annual goodwill impairment test was performed, the Company believed that the income approach and the market approach were equally representative of a reporting unit’s fair value. Determining the fair value of a reporting unit requires judgment and involves the use of significant estimates and assumptions. The Company based its fair value estimates on assumptions it believes to be reasonable but are inherently uncertain. Estimates and assumptions with respect to the determination of the fair value of its reporting units using the income approach include, among other inputs: • The Company’s operating forecasts; • The Company’s forecasted revenue growth rates; and • Risk-commensurate discount rates and costs of capital. The Company’s estimates of revenues and costs are based on historical data, various internal estimates, and a variety of external sources, and are developed as part of the Company’s regular long-range planning process. The control premium used in market or combined approaches is determined by considering control premiums offered as part of the acquisitions that have occurred in market segments that are comparable with the Company’s reporting units. Based on the results of the annual goodwill impairment analysis performed during the second fiscal quarter of 2015, the Company determined that no impairment needed to be recorded. As of January 30, 2016 , no new events had occurred nor had any facts or circumstances changed since the annual goodwill impairment analysis performed during the second quarter of fiscal year 2015 that indicated that the fair values of the reporting units may be less than their current carrying amounts. Intangible assets other than goodwill are amortized on a straight-line basis over the following estimated remaining useful lives, unless the Company has determined these lives to be indefinite. The Company did not incur costs to renew or extend the term of any acquired finite-lived intangible assets during the three months ended January 30, 2016 . The following tables present details of the Company’s intangible assets, excluding goodwill (in thousands, except for weighted-average remaining useful life): January 30, 2016 Gross Accumulated Net Weighted- Finite-lived intangible assets: Trade names $ 1,090 $ 471 $ 619 4.23 Core/developed technology (1) (2) 51,750 11,719 40,031 3.70 Patent portfolio license (3) 7,750 1,125 6,625 17.49 Customer relationships 23,110 3,233 19,877 6.94 Non-compete agreements 1,050 744 306 0.93 Patents with broader applications 1,040 58 982 14.13 Total finite-lived intangible assets 85,790 17,350 68,440 6.12 Indefinite-lived intangible assets, excluding goodwill: In-process research and development (“IPR&D”) (1) 2,850 — 2,850 Total indefinite-lived intangible assets, excluding goodwill 2,850 — 2,850 Total intangible assets, excluding goodwill $ 88,640 $ 17,350 $ 71,290 October 31, 2015 Gross Accumulated Net Weighted- Finite-lived intangible assets: Trade names $ 1,090 $ 415 $ 675 4.36 Core/developed technology (2) 40,530 9,605 30,925 3.49 Patent portfolio license (3) 7,750 849 6,901 17.74 Customer relationships 23,110 2,484 20,626 7.18 Non-compete agreements 1,050 664 386 1.17 Patents with broader applications 1,040 40 1,000 14.38 Total finite-lived intangible assets 74,570 14,057 60,513 6.55 Indefinite-lived intangible assets, excluding goodwill: IPR&D (1) 15,110 — 15,110 Total indefinite-lived intangible assets, excluding goodwill 15,110 — 15,110 Total intangible assets, excluding goodwill $ 89,680 $ 14,057 $ 75,623 (1) Acquired IPR&D are intangible assets accounted for as indefinite-lived assets until the completion or abandonment of the associated research and development efforts. If the research and development efforts associated with the IPR&D are successfully completed, then the IPR&D intangible assets will be amortized over the estimated useful lives to be determined as of the date the efforts are completed. During the three months ended January 30, 2016 , research and development efforts were completed on $12.3 million of the IPR&D intangible assets, and the completed IPR&D intangible assets are being amortized as Core/developed technology over an estimated useful life of five years . The research and development efforts associated with the remaining IPR&D intangible assets are expected to be completed in the second quarter of fiscal year 2016. (2) During the three months ended January 30, 2016 , $1.0 million of finite-lived intangible assets became fully amortized and, therefore, were removed from the balance sheet. (3) The patent portfolio license was assigned an estimated useful life that reflects the Company’s consumption of the expected defensive benefits related to this license to certain patents. The method of amortization for the patent portfolio license reflects the Company’s estimate of the pattern in which these expected defensive benefits will be used by the Company and is primarily based on the mix of expiration patterns of the individual patents included in the license. The Company conducts the IPR&D impairment test annually, as of the first day of the second fiscal quarter, or when events occur or facts and circumstances indicate that it is more likely than not that the IPR&D is impaired. For the annual IPR&D impairment test, the Company elects the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of the IPR&D assets is less than the carrying amount. If, after assessing the totality of events and circumstances, the Company determines that it is more likely than not that the fair value of the IPR&D assets is less than the carrying amount, then the Company conducts a quantitative analysis to determine the fair value of the IPR&D assets. If the carrying amount of the IPR&D assets exceeds the fair value, then the Company recognizes an impairment loss equal to the difference. Based on the results of the annual IPR&D impairment analysis performed during the second fiscal quarter of 2015, the Company determined that no impairment needed to be recorded. As of January 30, 2016 , no new events had occurred nor had any facts or circumstances changed since the annual IPR&D impairment analysis performed during the second quarter of fiscal year 2015 that indicated that the fair value of the IPR&D assets may be less than the current carrying amount. The amortization of finite-lived intangible assets is included in the following line items of the Company’s Condensed Consolidated Statements of Income as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ 3,154 $ 637 General and administrative (1) 277 — Amortization of intangible assets 902 138 Total $ 4,333 $ 775 (1) The amortization is related to the $7.8 million of perpetual, nonexclusive license to certain patents purchased during the fiscal year ended October 31, 2015 . The following table presents the estimated future amortization of finite-lived intangible assets as of January 30, 2016 (in thousands): Fiscal Year Estimated Future Amortization 2016 (remaining nine months) $ 12,894 2017 16,757 2018 12,238 2019 8,709 2020 7,620 Thereafter 10,222 Total $ 68,440

Balance Sheet Details

Balance Sheet Details	3 Months Ended
	Jan. 30, 2016
Balance Sheet Details [Abstract]
Balance Sheet Details	Balance Sheet Details The following tables provide details of selected balance sheet items (in thousands): January 30, October 31, Inventories: Raw materials $ 18,433 $ 18,788 Finished goods 24,153 21,736 Inventories $ 42,586 $ 40,524 January 30, October 31, Property and equipment, net: Gross property and equipment Computer equipment $ 16,262 $ 14,820 Software 68,456 67,625 Engineering and other equipment (1) 417,183 407,342 Furniture and fixtures (1) 32,262 31,028 Leasehold improvements 35,776 33,986 Land and building 385,539 385,415 Total gross property and equipment 955,478 940,216 Accumulated depreciation and amortization (1), (2) (513,320 ) (500,992 ) Property and equipment, net $ 442,158 $ 439,224 (1) Engineering and other equipment, furniture and fixtures, and accumulated depreciation and amortization include the following amounts under capital leases as of January 30, 2016 , and October 31, 2015 (in thousands): January 30, October 31, Cost $ 1,312 $ 1,312 Accumulated depreciation (939 ) (857 ) Property and equipment, net, under capital leases $ 373 $ 455 (2) The following table presents the depreciation of property and equipment included on the Company’s Condensed Consolidated Statements of Income (in thousands): Three Months Ended January 30, January 31, Depreciation expense $ 18,479 $ 18,800

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Jan. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company applies fair value measurements for both financial and non-financial assets and liabilities. The Company does not have any non-financial assets or liabilities that are required to be measured at fair value on a recurring basis as of January 30, 2016 . The fair value accounting guidance permits companies to elect fair value measurement for many financial instruments and certain other items that are not required to be accounted for at fair value. The Company did not elect fair value measurement for any eligible financial instruments or other assets. Fair Value Hierarchy The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. During the three months ended January 30, 2016 , the Company had no transfers between levels of the fair value hierarchy of its assets and liabilities measured at fair value. Assets and liabilities measured and recorded at fair value on a recurring basis as of January 30, 2016 , were as follows (in thousands): Fair Value Measurements Using Balance as of Quoted Prices in Significant Other Significant Assets: Money market funds (1) $ 1,115,461 $ 1,115,461 $ — $ — Derivative assets 212 — 212 — Total assets measured at fair value $ 1,115,673 $ 1,115,461 $ 212 $ — Liabilities: Derivative liabilities $ 2,638 $ — $ 2,638 $ — Total liabilities measured at fair value $ 2,638 $ — $ 2,638 $ — (1) Money market funds are reported within “Cash and cash equivalents” on the Company’s Condensed Consolidated Balance Sheets. Assets and liabilities measured and recorded at fair value on a recurring basis as of October 31, 2015 , were as follows (in thousands): Fair Value Measurements Using Balance as of Quoted Prices in Significant Other Significant Assets: Money market funds (1) $ 1,184,410 $ 1,184,410 $ — $ — Derivative assets 709 — 709 — Total assets measured at fair value $ 1,185,119 $ 1,184,410 $ 709 $ — Liabilities: Derivative liabilities $ 1,125 $ — $ 1,125 $ — Total liabilities measured at fair value $ 1,125 $ — $ 1,125 $ — (1) Money market funds are reported within “Cash and cash equivalents” on the Company’s Condensed Consolidated Balance Sheets.

Restructuring and Other Costs

Restructuring and Other Costs	3 Months Ended
	Jan. 30, 2016
Restructuring and Related Activities [Abstract]
Restructuring and Other Costs	Restructuring and Other Related Benefits The following table provides details of “ Restructuring and other related benefits ” on the Company’s Condensed Consolidated Statements of Income (in thousands): Three Months Ended January 30, January 31, Lease loss reserve and related benefits (566 ) — The following table provides a reconciliation of the Company’s beginning and ending restructuring liability balances (in thousands): Fiscal 2013 Fourth Quarter Restructuring Plan Other Restructuring Plans Severance and Benefits Lease Loss Reserve and Related Costs Lease Loss Reserve and Related Costs Total Restructuring liabilities at October 31, 2015 $ 110 $ 1,811 $ 408 $ 2,329 Restructuring and other related benefits — (566 ) — (566 ) Cash payments — (161 ) (91 ) (252 ) Translation adjustment (2 ) (34 ) — (36 ) Restructuring liabilities at January 30, 2016 $ 108 $ 1,050 $ 317 $ 1,475 Current restructuring liabilities at January 30, 2016 $ 108 $ 405 $ 317 $ 830 Non-current restructuring liabilities at January 30, 2016 $ — $ 645 $ — $ 645 Fiscal 2013 Fourth Quarter Restructuring Plan During the fiscal year ended October 26, 2013, and the first quarter of fiscal year 2014, the Company restructured certain business operations and reduced the Company’s operating expense structure. The restructuring plan included a workforce reduction, as well as the cancellation of certain nonrecurring engineering agreements and exits from certain leased facilities. The restructuring plan was substantially completed in the first quarter of fiscal year 2014. Other Restructuring Plans The Company also recorded charges related to estimated facilities lease losses, net of expected sublease income, due to consolidation of real estate space as a result of acquisitions. Cash payments for facilities that are part of the Company’s lease loss reserve are expected to be paid over the respective lease terms through fiscal year 2021. General The Company reevaluates its estimates and assumptions on a quarterly basis and makes adjustments to the restructuring liabilities balance if necessary. During the three months ended January 30, 2016 , the Company reversed $0.6 million of charges related to estimated facilities lease losses due to a change in lease terms for a certain facility.

Borrowings

Borrowings	3 Months Ended
	Jan. 30, 2016
Debt Disclosure [Abstract]
Borrowings	Borrowings The following table provides details of the Company’s long-term debt (in thousands, except years and percentages): January 30, 2016 October 31, 2015 Maturity Stated Annual Interest Rate Amount Effective Interest Rate Amount Effective Interest Rate Convertible Senior Unsecured Notes: 2020 Convertible Notes 2020 1.375% $ 575,000 4.98 % $ 575,000 4.98 % Senior Unsecured Notes: 2023 Notes 2023 4.625% 300,000 4.83 % 300,000 4.83 % Capital lease obligations 2016 4.625% 215 4.63 % 298 4.63 % Total gross long-term debt 875,215 875,298 Unamortized discount (74,962 ) (79,196 ) Unamortized debt issuance costs (1,935 ) (2,025 ) Current portion of long-term debt (215 ) (298 ) Long-term debt, net of current portion $ 798,103 $ 793,779 Convertible Senior Unsecured Notes On January 14, 2015, the Company issued $575.0 million in aggregate principal amount of 1.375% convertible senior unsecured notes due 2020 (the “2020 Convertible Notes”) pursuant to an indenture, dated as of January 14, 2015, between the Company and Wells Fargo Bank, National Association, as the trustee (the “Offering”). Net of an original issue discount, the Company received $565.7 million in proceeds from the Offering. Concurrently with the closing of the Offering, the Company called for redemption its outstanding 6.875% senior secured notes due 2020 (the “2020 Notes”) and irrevocably deposited a portion of the net proceeds from the Offering with the trustee to discharge the 2020 Indenture as described below under “ Senior Secured Notes. ” The 2020 Convertible Notes bear interest payable semiannually on January 1 and July 1 of each year, beginning on July 1, 2015. No payments were made toward the principal of the 2020 Convertible Notes during the three months ended January 30, 2016 . The Company separately accounts for the liability and equity components of the 2020 Convertible Notes. The fair value of the liability component, used in the allocation between the liability and equity components as of the date of issuance, was based on the present value of cash flows using a discount rate of 4.57% , the Company’s borrowing rate for a similar debt instrument without the conversion feature. The carrying values of the liability and equity components of the 2020 Convertible Notes are as follows (in thousands): January 30, October 31, Principal $ 575,000 $ 575,000 Unamortized discount of the liability component (72,161 ) (76,311 ) Net carrying amount of liability component $ 502,839 $ 498,689 Carrying amount of equity component $ 66,988 $ 70,765 As of January 30, 2016 , the remaining period of amortization for the discount is 3.92 years. The amount of interest cost recognized for amortization of the discount and for the contractual interest coupon for the 2020 Convertible Notes was $4.2 million and $2.0 million , respectively, during the three months ended January 30, 2016 . The amount of interest cost recognized for amortization of the discount and for the contractual interest coupon for the 2020 Convertible Notes was $0.7 million and $0.4 million , respectively, during the three months ended January 31, 2015 . As of January 30, 2016 , and October 31, 2015 , the fair value of the 2020 Convertible Notes was approximately $532.8 million and $568.0 million , respectively, which was estimated based on broker trading prices. The 2020 Convertible Notes mature on January 1, 2020 , unless repurchased or converted in accordance with their terms prior to such date. The 2020 Convertible Notes are not callable prior to their maturity. The 2020 Convertible Notes are convertible into shares of common stock of the Company under the circumstances described below. The initial conversion rate is 62.7746 shares of the Company’s common stock per $1,000 principal amount of the notes, which is equal to 36.1 million shares at an initial conversion price of approximately $15.93 per share. The 2020 Convertible Notes contain provisions where the conversion rate is adjusted upon the occurrence of certain events, including if the Company pays a regular, quarterly cash dividend in an amount greater than $0.035 per share. During the first fiscal quarter of 2016, the Board of Directors of the Company declared and paid a cash dividend in the amount of $0.045 per share. Accordingly, as of December 8, 2015 , the conversion rate was adjusted to a rate of 62.9573 shares of the Company’s common stock per $1,000 principal amount of the notes, which is equal to 36.2 million shares at a conversion price of approximately $15.88 per share. However, because the adjustment resulted in a change to the conversion rate of less than 1%, as is allowed by the terms of the indenture governing the 2020 Convertible Notes, the Company elected to defer the administration and noteholder notification of such adjustment until the occurrence of (i) a subsequent adjustment to the conversion rate that results in a cumulative adjustment of at least 1% of the current conversion rate, (ii) the conversion of any 2020 Convertible Note, or (iii) certain other events requiring the adjustment to be made under the indenture governing the 2020 Convertible Notes. Holders of the 2020 Convertible Notes may convert all or a portion of their notes prior to the close of business on the business day immediately preceding September 1, 2019, in multiples of $1,000 principal amount, only under the following circumstances: • During any fiscal quarter commencing after the fiscal quarter ending on May 2, 2015 (and only during such fiscal quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price of the notes on each applicable trading day; • During the five -business-day period after any 10 consecutive trading day period in which the trading price per $1,000 principal amount of the notes for each trading day of that 10 consecutive trading day period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate of the notes on each such trading day; or • Upon the occurrence of certain corporate events as specified in the terms of the indenture governing the 2020 Convertible Notes. On or after September 1, 2019, to the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of their notes regardless of the foregoing conditions. As of January 30, 2016 , the circumstances for conversion had not been triggered, and the 2020 Convertible Notes were not convertible. The if-converted value of the 2020 Convertible Notes as of January 30, 2016 , did not exceed the principal amount of the 2020 Convertible Notes. If a fundamental change, as specified in the terms of the indenture governing the 2020 Convertible Notes, occurs prior to the maturity date, holders of the notes may require the Company to repurchase the 2020 Convertible Notes at a repurchase price equal to 100% of the principal amount of the 2020 Convertible Notes repurchased, plus accrued and unpaid interest, if any, up to the repurchase date. As of January 30, 2016 , a fundamental change had not occurred and the 2020 Convertible Notes were not re-purchasable. Convertible Note Hedge and Warrants Related to the Convertible Senior Unsecured Notes In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge transactions with certain financial institutions (the “counterparties”) with respect to its common stock. Upon conversion of the 2020 Convertible Notes, the convertible note hedge transactions give the Company the right to acquire from the counterparties, subject to anti-dilution adjustments substantially similar to those in the 2020 Convertible Notes, initially approximately 36.1 million shares of the Company’s common stock at an initial strike price of $15.93 per share. Because a dividend in an amount greater than $0.035 per share was declared and paid effective beginning in the third fiscal quarter of 2015, the strike price under the convertible note hedge transactions has been adjusted to approximately $15.88 per share as of December 8, 2015 . The convertible note hedge transactions are expected generally to reduce the potential common stock dilution and/or offset potential cash payments in excess of the principal amount of converted notes upon conversion of the notes in the event that the market price per share of the Company’s common stock, as measured under the terms of the convertible note hedge transactions, is greater than the strike price of the convertible note hedge transactions. The convertible note hedge transactions will be terminated on the maturity date of the 2020 Convertible Notes or earlier under certain circumstances. The $86.1 million cost of the convertible note hedge transactions has been accounted for as an equity transaction. Separately from the convertible note hedge transactions, the Company entered into warrant transactions with the counterparties, pursuant to which the Company sold warrants to the counterparties to acquire, subject to customary anti-dilution adjustments, up to 36.1 million shares in the aggregate at an initial strike price of $20.65 per share. The primary reason the Company entered into these warrant transactions was to partially offset the cost of the convertible note hedge transactions. The warrants mature over 60 trading days, commencing on April 1, 2020 , and are exercisable solely on the maturity dates. The warrants are subject to net share settlement; however, the Company may elect to cash settle the warrants. The Company received gross proceeds of $51.2 million from the warrant transactions, which have been accounted for as an equity transaction. Under the terms of the warrants, the strike price and number of shares to be acquired by the holders of the warrants are adjusted if the Company pays a regular, quarterly cash dividend in an amount greater than $0.035 per share. Accordingly, the terms of the warrants were adjusted to reflect the payment of a cash dividend in the amount of $0.045 per share beginning in the third fiscal quarter of 2015, and, as of December 8, 2015 , the holders of the warrants have the right to acquire up to approximately 36.2 million shares of the Company’s common stock at a strike price of approximately $20.59 per share. See Note 15 , “ Net Income per Share ,” of the Notes to Condensed Consolidated Financial Statements for further discussion of the dilutive impact of the 2020 Convertible Notes and the convertible note hedge and warrant transactions. Senior Unsecured Notes In January 2013, the Company issued 4.625% senior unsecured notes in the aggregate principal amount of $300.0 million due 2023 (the “2023 Notes”) pursuant to an indenture, dated as of January 22, 2013 (the “2023 Indenture”), between the Company, certain domestic subsidiaries of the Company that have guaranteed the Company’s obligations under the 2023 Notes, and Wells Fargo Bank, National Association, as the trustee. The guarantees of the 2023 Notes were released upon the termination of the Senior Secured Credit Facility and discharge of the 2020 Indenture in the first fiscal quarter of 2015. The 2023 Notes bear interest payable semiannually on January 15 and July 15 of each year. No payments were made toward the principal of the 2023 Notes during the three months ended January 30, 2016 . As of January 30, 2016 , and October 31, 2015 , the fair value of the 2023 Notes was approximately $289.0 million and $293.9 million , respectively, which was estimated based on broker trading prices. On or after January 15, 2018, the Company may redeem all or part of the 2023 Notes at the redemption prices set forth in the 2023 Indenture, plus accrued and unpaid interest, if any, up to the redemption date. At any time prior to January 15, 2018, the Company may redeem all or a part of the 2023 Notes at a price equal to 100% of the principal amount of the 2023 Notes, plus an applicable premium and accrued and unpaid interest, if any, up to the redemption date. In addition, at any time prior to January 15, 2016, the Company may redeem up to 35% of the principal amount of the 2023 Notes, using the net cash proceeds of one or more sales of the Company’s capital stock, at a redemption price equal to 104.625% of the principal amount of the 2023 Notes redeemed, plus accrued and unpaid interest, if any, up to the redemption date. If the Company experiences a specified change of control triggering event, it must offer to repurchase the 2023 Notes at a repurchase price equal to 101% of the principal amount of the 2023 Notes repurchased, plus accrued and unpaid interest, if any, up to the repurchase date. The 2023 Indenture contains covenants that, among other things, restrict the ability of the Company and its subsidiaries to: • Incur certain liens and enter into certain sale-leaseback transactions; • Create, assume, incur, or guarantee additional indebtedness of the Company’s subsidiaries without such subsidiaries guaranteeing the 2023 Notes on a pari passu basis; and • Enter into certain consolidation or merger transactions, or convey, transfer, or lease all or substantially all of the Company’s or its subsidiaries’ assets. These covenants are subject to a number of limitations and exceptions as set forth in the 2023 Indenture. The 2023 Indenture also includes customary events of default, including cross-defaults to other debt of the Company and its subsidiaries. Senior Secured Notes In January 2010, the Company issued $300.0 million in aggregate principal amount of the 2020 Notes pursuant to an indenture, dated as of January 20, 2010, between the Company, certain domestic subsidiaries of the Company, and Wells Fargo Bank, National Association, as the trustee (the “2020 Indenture”). Interest on the 2020 Notes was payable semiannually on January 15 and July 15 of each year. The Company’s obligations under the 2020 Notes were previously guaranteed by certain of the Company’s domestic subsidiaries and secured by a lien on substantially all of the Company’s and the subsidiary guarantors’ assets. On January 14, 2015, the Company called the 2020 Notes for redemption at a redemption price equal to 103.438% of the principal amount of the 2020 Notes, and irrevocably deposited $322.2 million with the trustee for the 2020 Notes to discharge the 2020 Indenture. Due to the deposit and discharge, the guarantees provided by certain of the Company’s domestic subsidiaries, and the liens granted by the Company and the subsidiary guarantors to secure their obligations with respect to the 2020 Notes, were released as of the date of the deposit. The amount deposited with the trustee included $300.0 million to repay the principal amount of the 2020 Notes, $10.3 million representing the difference between the redemption price and the principal amount of the 2020 Notes (“Call Premium”), $10.3 million for accrued interest through January 15, 2015, and $1.6 million of interest payable up to the redemption date of February 13, 2015. The trustee redeemed the 2020 Notes on February 13, 2015, using the deposited amount, extinguishing the Company’s $300.0 million liability for the principal amount of the 2020 Notes. In accordance with the applicable accounting guidance for debt modification and extinguishment, and for interest costs accounting, the Company expensed the Call Premium, remaining debt issuance costs, and remaining original issue discount relating to the 2020 Notes in the first quarter of fiscal year 2015, which totaled $20.4 million . The Company reported this expense within “Interest expense” on the Company’s Condensed Consolidated Statements of Income for the three months ended January 31, 2015 . Debt Maturities As of January 30, 2016 , the Company’s aggregate debt maturities based on outstanding principal were as follows (in thousands): Fiscal Year Principal Balances 2016 (remaining nine months) $ 215 2017 — 2018 — 2019 — 2020 575,000 Thereafter 300,000 Total $ 875,215

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Jan. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	Commitments and Contingencies Product Warranties The Company’s accrued liability for estimated future warranty costs is included in “Other accrued liabilities” in the accompanying Condensed Consolidated Balance Sheets. The following table summarizes the activity related to the Company’s accrued liability for estimated future warranty costs during the three months ended January 30, 2016 , and January 31, 2015 (in thousands): Accrued Warranty Three Months Ended January 30, January 31, Beginning balance $ 7,599 $ 7,486 Liabilities accrued for warranties issued during the period 978 1,262 Warranty claims paid and used during the period (1,144 ) (1,114 ) Changes in liability for pre-existing warranties during the period (225 ) (446 ) Ending balance $ 7,208 $ 7,188 In addition, the Company has defense and indemnification clauses contained within its various customer contracts. As such, the Company indemnifies the parties to whom it sells its products with respect to the Company’s products, both alone and in certain circumstances when in combination with other products and services, for infringement of any patents, trademarks, copyrights, or trade secrets, as well as against bodily injury or damage to real or tangible personal property caused by a defective Company product. As of January 30, 2016 , there have been no known events or circumstances that have resulted in a material customer contract-related indemnification liability to the Company. Manufacturing and Purchase Commitments Brocade has manufacturing arrangements with its CMs under which Brocade provides product forecasts and places purchase orders in advance of the scheduled delivery of products to Brocade’s customers. The required lead time for placing orders with the CMs depends on the specific product. Brocade issues purchase orders, and the CMs then generate invoices based on prices and payment terms mutually agreed upon and set forth in those purchase orders. Although the purchase orders Brocade places with its CMs are cancellable, the terms of the agreements require Brocade to purchase all inventory components not returnable, usable by, or sold to other customers of the CMs. In addition, Brocade has an arrangement with one of its CMs regarding factory capacity that can be used by the Company. Under this arrangement, the Company receives a credit for exceeding the planned utilization of factory capacity and, conversely, is required to pay additional fees for under-utilizing the planned capacity. As of January 30, 2016 , the Company’s aggregate commitment to its CMs for inventory components used in the manufacture of Brocade products was $174.0 million , which the Company expects to utilize during future normal ongoing operations, net of a purchase commitments reserve of $1.4 million , which is reported within “Other accrued liabilities” on the Company’s Condensed Consolidated Balance Sheet as of January 30, 2016 . The Company’s purchase commitments reserve reflects the Company’s estimate of purchase commitments it does not expect to utilize in normal ongoing operations. Income Taxes The Company is subject to several ongoing income tax audits and has received notices of proposed adjustments or assessments from certain tax authorities. For additional discussion, see Note 13 , “ Income Taxes ,” of the Notes to Condensed Consolidated Financial Statements. The Company believes it has adequate reserves for all open tax years. Legal Proceedings From time to time, the Company is subject to various legal proceedings and claims, either asserted or unasserted, which arise in the ordinary course of business, including claims of alleged infringement of patents and/or other intellectual property rights and commercial and employment contract disputes. While the outcome of these matters cannot be predicted with certainty, the Company does not believe that the outcome of any of these matters, individually or in the aggregate, will result in losses that are materially in excess of amounts already accrued by the Company.

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	3 Months Ended
	Jan. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments And Hedging Activities	Derivative Instruments and Hedging Activities In the normal course of business, the Company is exposed to fluctuations in interest rates and the exchange rates associated with foreign currencies. The Company’s primary objective for holding derivative financial instruments is to manage foreign currency exchange rate risk. The Company currently does not manage its exposure to credit risk by entering into derivative instruments. However, the Company manages its exposure to credit risk through its investment policies. As part of these investment policies, the Company generally enters into transactions with high-credit quality counterparties and, by policy, limits the amount of credit exposure to any one counterparty based on its analysis of that counterparty’s relative credit standing. The amounts subject to credit risk related to derivative instruments are generally limited to the amounts, if any, by which a counterparty’s obligations exceed the Company’s obligations with that counterparty. Foreign Currency Exchange Rate Risk A majority of the Company’s revenue, expense, and capital purchasing activities are transacted in U.S. dollars. However, the Company is exposed to foreign currency exchange rate risk inherent in conducting business globally in numerous currencies. The Company is primarily exposed to foreign currency fluctuations related to operating expenses denominated in currencies other than the U.S. dollar, of which the most significant to its operations for the three months ended January 30, 2016 , were the British pound , the euro , the Indian rupee , the Chinese yuan , the Singapore dollar , the Swiss franc , and the Japanese yen . The Company has established a foreign currency risk management program to protect against the volatility of future cash flows caused by changes in foreign currency exchange rates. This program reduces, but does not eliminate, the impact of foreign currency exchange rate movements. The Company utilizes a rolling hedge strategy for the majority of its foreign currency derivative instruments to hedge exposures to the variability in the U.S. dollar equivalent of anticipated non-U.S.-dollar-denominated cash flows. All of the Company’s foreign currency forward contracts are single delivery, which are settled at maturity involving one cash payment. The Company’s foreign currency risk management program includes foreign currency derivatives with a cash flow hedge accounting designation that utilizes foreign currency forward and option contracts to hedge exposures to the variability in the U.S. dollar equivalent of anticipated non-U.S.-dollar-denominated cash flows. These instruments generally have a maturity of less than 15 months . For these derivatives, the Company initially reports the after-tax gain or loss from the effective portion of the hedge as a component of accumulated other comprehensive loss in stockholders’ equity and reclassifies it into earnings in the same period in which the hedged transaction affects earnings. The tax effect allocated to cash flow hedge-related components of other comprehensive loss was not significant for the three months ended January 30, 2016, and January 31, 2015 . Ineffective cash flow hedges are included in the Company’s net income as part of “ Interest and other income (loss), net .” The amount recorded on ineffective cash flow hedges was not significant for the three months ended January 30, 2016, and January 31, 2015 . Net losses relating to the effective portion of foreign currency derivatives recorded in the Company’s Condensed Consolidated Statements of Income are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ (94 ) $ (136 ) Research and development (199 ) (35 ) Sales and marketing (374 ) (454 ) General and administrative (27 ) (58 ) Total $ (694 ) $ (683 ) Alternatively, the Company may choose not to hedge the foreign currency risk associated with its foreign currency exposures if the Company believes such exposure acts as a natural foreign currency hedge for other offsetting amounts denominated in the same currency or if the currency is difficult or too expensive to hedge. The net foreign currency exchange gains and losses recorded as part of “ Interest and other income (loss), net ” were losses of $0.3 million and $1.0 million for the three months ended January 30, 2016, and January 31, 2015 , respectively. As of January 30, 2016 , the Company had gross unrealized loss positions of $2.6 million and gross unrealized gain positions of $0.2 million included in “Other accrued liabilities” and “Prepaid expenses and other current assets,” respectively. Volume of Derivative Activity All derivatives are designated as hedging instruments as of January 30, 2016 , and October 31, 2015 . Total gross notional amounts, presented by currency, are as follows (in thousands): Derivatives Designated In U.S. dollars January 30, 2016 October 31, 2015 British pound $ 32,080 $ 46,330 Euro 30,249 40,961 India rupee 25,837 35,647 Chinese yuan 10,954 15,129 Singapore dollar 9,830 13,745 Swiss franc 6,708 9,265 Japanese yen 6,592 8,809 Total $ 122,250 $ 169,886

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Jan. 30, 2016
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Stockholders' Equity and Stock-Based Compensation	Stock-Based Compensation Stock-based compensation expense, net of estimated forfeitures, is included in the following line items of the Company’s Condensed Consolidated Statements of Income as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ 2,905 $ 3,816 Research and development 5,476 4,933 Sales and marketing 11,078 9,843 General and administrative 4,585 5,490 Total stock-based compensation expense $ 24,044 $ 24,082 The following table presents stock-based compensation expense, net of estimated forfeitures, by grant type (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Stock options $ 729 $ 1,356 RSUs, including restricted stock units with market conditions 19,793 17,934 Employee stock purchase plan (“ESPP”) 3,522 4,792 Total stock-based compensation expense $ 24,044 $ 24,082 The following table presents the unrecognized compensation expense, net of estimated forfeitures, by grant type and the related weighted-average periods over which this expense is expected to be recognized as of January 30, 2016 (in thousands, except for the weighted-average period): Unrecognized Compensation Expense Weighted- Average Period (In years) Stock options $ 1,820 0.99 RSUs, including restricted stock units with market conditions $ 121,904 1.99 ESPP $ 10,009 1.08 The following table presents details on grants made by the Company for the following periods: Three Months Ended January 30, 2016 January 31, 2015 Granted Weighted-Average Granted Weighted-Average Stock options — $ — 1,117 $ 3.09 RSUs, including stock units with market conditions 3,476 $ 7.96 3,641 $ 10.87 The total intrinsic value of stock options exercised for the three months ended January 30, 2016 , and January 31, 2015 , was $0.1 million and $1.0 million , respectively.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Jan. 30, 2016
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Dividends During the three months ended January 30, 2016 , the Company’s Board of Directors declared the following dividends (in thousands, except per share amounts): Declaration Date Dividend per Share Record Date Total Amount Paid Payment Date November 22, 2015 $ 0.045 December 10, 2015 $ 18,429 January 4, 2016 Future dividends are subject to review and approval on a quarterly basis by the Company’s Board of Directors or a committee thereof. Convertible Note Hedge and Warrants Related to the Convertible Senior Unsecured Notes In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions with certain financial institutions with respect to its common stock. See Note 8 , “ Borrowings ,” of the Notes to Condensed Consolidated Financial Statements for further discussion. Accumulated Other Comprehensive Loss The components of other comprehensive loss and related tax effects for the three months ended January 30, 2016 , and January 31, 2015 , are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Unrealized gains (losses) on cash flow hedges: Change in unrealized gains and losses, foreign exchange contracts $ (2,413 ) $ 113 $ (2,300 ) $ (2,179 ) $ 405 $ (1,774 ) Net gains and losses reclassified into earnings, foreign exchange contracts (1) 694 (68 ) 626 683 (80 ) 603 Net unrealized gains (losses) on cash flow hedges (1,719 ) 45 (1,674 ) (1,496 ) 325 (1,171 ) Foreign currency translation adjustments (2,203 ) — (2,203 ) (4,221 ) — (4,221 ) Total other comprehensive loss $ (3,922 ) $ 45 $ (3,877 ) $ (5,717 ) $ 325 $ (5,392 ) (1) For Condensed Consolidated Statements of Income classification of amounts reclassified from accumulated other comprehensive loss, see Note 10 , “ Derivative Instruments and Hedging Activities ,” of the Notes to Condensed Consolidated Financial Statements. The changes in accumulated other comprehensive loss by component, net of tax, for the three months ended January 30, 2016 , and January 31, 2015 , are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Losses on Cash Flow Hedges Foreign Currency Translation Adjustments Total Accumulated Other Comprehensive Loss Losses on Cash Flow Hedges Foreign Currency Translation Adjustments Total Accumulated Other Comprehensive Loss Beginning balance $ (1,539 ) $ (23,463 ) $ (25,002 ) $ (1,907 ) $ (16,907 ) $ (18,814 ) Change in unrealized gains and losses (2,300 ) (2,203 ) (4,503 ) (1,774 ) (4,221 ) (5,995 ) Net gains and losses reclassified into earnings 626 — 626 603 — 603 Net current-period other comprehensive loss (1,674 ) (2,203 ) (3,877 ) (1,171 ) (4,221 ) (5,392 ) Ending balance $ (3,213 ) $ (25,666 ) $ (28,879 ) $ (3,078 ) $ (21,128 ) $ (24,206 )

Income Taxes

Income Taxes	3 Months Ended
	Jan. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes In general, the Company’s provision for income taxes differs from the tax computed at the U.S. federal statutory tax rate due to state taxes, the effect of non-U.S. operations being taxed at rates lower than the U.S. federal statutory tax rate, nondeductible stock-based compensation expense, tax credits, and adjustments to unrecognized tax benefits. Earnings of the Company’s subsidiaries outside of the United States primarily relate to its European and Asia Pacific businesses. The effective tax rate for the three months ended January 30, 2016 , was lower than the U.S. federal statutory tax rate of 35% and lower compared with the three months ended January 31, 2015 , primarily due to the benefits from the domestic manufacturing deduction, which was not available for the three months ended January 31, 2015 , and the federal research and development tax credit, which was permanently reinstated retroactive to January 1, 2015, by the passage of the Protecting Americans from Tax Hikes Act of 2015. The Company recorded a discrete benefit related to the research and development credit which reduced the Company’s effective tax rate for the three months ended January 30, 2016 , and a benefit reducing the effective annual tax rate for fiscal year 2016. The Company’s total gross unrecognized tax benefits, excluding interest and penalties, were $126.6 million as of January 30, 2016 . If the total gross unrecognized tax benefits as of January 30, 2016 , were recognized in the future, approximately $87.4 million would decrease the Company’s effective tax rate. The IRS and other tax authorities regularly examine the Company’s income tax returns. In October 2014, the IRS issued a Revenue Agent’s Report related to its field examination of the Company’s federal income tax returns for fiscal years 2009 and 2010. The IRS is contesting certain assumptions used to support the Company’s transfer pricing with its foreign subsidiaries. In November 2014, the Company filed a protest to challenge the proposed adjustment, and in March 2015, the issue was moved to the Office of Appeals. In addition, in October 2014, the Geneva Tax Administration issued its final assessments for fiscal years 2003 to 2012, disputing certain of the Company’s transfer pricing arrangements. In November 2014, the Company filed a protest to challenge the final assessments. The Company believes that reserves for unrecognized tax benefits are adequate for all open tax years. The timing of income tax examinations, as well as the amounts and timing of related settlements, if any, are highly uncertain. Before the end of fiscal year 2016, it is reasonably possible that either certain audits will conclude or the statutes of limitations relating to certain income tax examination periods will expire, or both. After the Company reaches settlement with the tax authorities, the Company expects to record a corresponding adjustment to its unrecognized tax benefits. Taking into consideration the inherent uncertainty as to settlement terms, the timing of payments, and the impact of such settlements on the uncertainty in income taxes, the Company estimates the range of potential decreases in underlying uncertainty in income tax is between $0 and $4 million in the next 12 months.

Segment Information

Segment Information	3 Months Ended
	Jan. 30, 2016
Segment Reporting [Abstract]
Segment Information	Segment Information Operating segments are defined as components of an enterprise for which separate financial information is available that is evaluated regularly by the Chief Operating Decision Maker (“CODM”), or decision-making group, in deciding how to allocate resources and in assessing performance. Financial decisions and the allocation of resources are based on the information from the Company’s internal management reporting system. Currently, the Company’s CODM is its Chief Executive Officer. Brocade is organized into three operating segments, each of which is an individually reportable segment: SAN Products, IP Networking Products, and Global Services. These reportable segments are organized principally by product category. At this time, the Company does not track its operating expenses by operating segments because management does not consider this information in its measurement of the performance of the operating segments. The Company also does not track all of its assets by operating segments. The majority of the Company’s assets as of January 30, 2016 , were attributable to its U.S. operations. Summarized financial information by reportable segment for the three months ended January 30, 2016, and January 31, 2015 , based on the internal management reporting system, is as follows (in thousands): SAN Products IP Networking Products Global Services Total Three months ended January 30, 2016 Net revenues $ 347,058 $ 134,109 $ 93,117 $ 574,284 Cost of revenues 81,204 62,893 41,372 185,469 Gross margin $ 265,854 $ 71,216 $ 51,745 $ 388,815 Three months ended January 31, 2015 Net revenues $ 353,399 $ 132,839 $ 90,001 $ 576,239 Cost of revenues 85,725 64,201 36,630 186,556 Gross margin $ 267,674 $ 68,638 $ 53,371 $ 389,683

Net Income Per Share

Net Income Per Share	3 Months Ended
	Jan. 30, 2016
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income per Share The following table presents the calculation of basic and diluted net income per share (in thousands, except per share amounts): Three Months Ended January 30, January 31, Basic net income per share Net income $ 93,646 $ 87,267 Weighted-average shares used in computing basic net income per share 407,902 428,536 Basic net income per share $ 0.23 $ 0.20 Diluted net income per share Net income $ 93,646 $ 87,267 Weighted-average shares used in computing basic net income per share 407,902 428,536 Dilutive potential common shares in the form of stock options 1,332 1,734 Dilutive potential common shares in the form of other share-based awards 5,851 8,886 Weighted-average shares used in computing diluted net income per share 415,085 439,156 Diluted net income per share $ 0.23 $ 0.20 Antidilutive potential common shares in the form of: (1) Warrants issued in conjunction with the 2020 Convertible Notes (2) 36,200 7,140 Stock options 1,874 577 Other share-based awards 984 — (1) These amounts are excluded from the computation of diluted net income per share. (2) In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions as described in Note 8 , “ Borrowings .” The 2020 Convertible Notes have no impact on diluted earnings per share until the average quarterly price of the Company’s common stock exceeds the adjusted conversion price of $15.88 per share. If the common stock price exceeds this adjusted conversion price, then, prior to conversion, the Company will calculate the effect of the additional shares that may be issued using the treasury stock method. If the average price of the Company’s common stock exceeds $20.59 per share for a quarterly period, the Company’s weighted-average shares used in computing diluted net income per share will be impacted by the effect of the additional potential shares that may be issued related to the warrants using the treasury stock method. The convertible note hedge is not considered for purposes of the diluted earnings per share calculation, as its effect would be antidilutive.

Basis Of Presentation (Policies

Basis Of Presentation (Policies)	3 Months Ended
	Jan. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period Policy	The Company’s fiscal year is a 52- or 53-week period ending on the last Saturday in October or the first Saturday in November, respectively. As is customary for companies that use the 52/53-week convention, every fifth year is a 53-week year. Fiscal year 2016 is a 52-week fiscal year and fiscal year 2015 was a 52-week fiscal year. The Company’s next 53-week fiscal year will be fiscal year 2019 and its next 14-week quarter will be the second quarter of fiscal year 2019.
Consolidation Policy	The Company’s Condensed Consolidated Financial Statements include the accounts of Brocade and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated.
Use of Estimates in Preparation of Condensed Consolidated Financial Statements	Use of Estimates in Preparation of Condensed Consolidated Financial Statements The preparation of the Company’s condensed consolidated financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and judgments that affect the amounts reported in the Company’s condensed consolidated financial statements and accompanying notes. Estimates are used for, but not limited to, revenue recognition, sales allowances and programs, allowance for doubtful accounts, stock-based compensation, acquisition purchase price allocations, warranty obligations, inventory valuation and purchase commitments, restructuring costs, incentive compensation, facilities lease losses, impairment of goodwill and other indefinite-lived intangible assets, litigation, income taxes, and investments. Actual results may differ materially from these estimates.

Summary of Significant Accoun23

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Jan. 30, 2016
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy	New Accounting Pronouncements or Updates Recently Adopted In April 2014, the Financial Accounting Standards Board (“FASB”) issued an update to Accounting Standards Codification (“ASC”) 205, Presentation of Financial Statements , and ASC 360, Property, Plant, and Equipment: Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity . Under this update, a discontinued operation may include a component of an entity or a group of components of an entity, a business, or nonprofit activity. Only those disposals of components of an entity that represent a strategic shift that has, or will have, a major effect on an entity’s operations and financial results will be reported as discontinued operations in the financial statements. This update should be applied prospectively. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In April 2015, the FASB issued an update to ASC 835, Interest—Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs . Under this update, debt issuance costs are required to be presented as a direct deduction from the carrying amount of the related debt liability, consistent with the presentation of debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this update. This update should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In September 2015, the FASB issued an update to ASC 805, Business Combinations: Simplifying the Accounting Measurement-Period Adjustments . This update simplifies the accounting for adjustments made to provisional amounts recognized in a business combination by eliminating the requirement to retrospectively account for those adjustments. Under this update, the adjustments are recognized in the reporting period in which the adjustment amounts are determined. This update should be applied prospectively. The Company adopted this update in the first quarter of fiscal year 2016. There was no material impact on the Company’s financial position, results of operations, or cash flows. In November 2015, the FASB issued an update to ASC 740, Income Taxes: Balance Sheet Classification of Deferred Taxes . This update simplifies the presentation of current and noncurrent deferred tax liabilities and assets. Under this update, the deferred tax liabilities and assets are classified as noncurrent on the balance sheet. The update does not impact the current requirement that deferred tax liabilities and assets be offset and presented as a single amount. This update may be applied either prospectively or retrospectively. The Company adopted this update in the first quarter of fiscal year 2016 and has elected to apply this update prospectively. There was no material impact on the Company’s financial position, results of operations, or cash flows. Recent Accounting Pronouncements or Updates That Are Not Yet Effective In May 2014, the FASB issued an update to ASC 606, Revenue from Contracts with Customers , that will supersede virtually all existing revenue guidance. Under this update, an entity is required to recognize revenue upon transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. As such, an entity will need to use more judgment and make more estimates than under the current guidance. This update should be applied retrospectively either to each prior reporting period presented in the financial statements, or only to the most current reporting period presented in the financial statements with a cumulative effect adjustment recorded in retained earnings. In August 2015, the FASB issued an update to defer the effective date of this update by one year. This update becomes effective and will be adopted by the Company in the first quarter of fiscal year 2019. Early adoption is not permitted for reporting periods before the first quarter of fiscal year 2018. The Company is currently evaluating the impact of this update on its consolidated financial statements. In April 2015, the FASB issued an update to ASC 350, Intangibles—Goodwill and Other—Internal-Use Software: Customer’s Accounting for Fees Paid in Cloud Computing Arrangement . This update provides guidance on the accounting for fees paid in a cloud computing arrangement if the arrangement was determined to include a software license. This update will not change U.S. GAAP for a customer’s accounting for service contracts. This update may be applied either prospectively or retrospectively and will be adopted by the Company in the first quarter of fiscal year 2017. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated financial statements. In July 2015, the FASB issued an update to ASC 330, Inventory: Simplifying the Measurement of Inventory . Under this update, measurement of inventory is based on the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less the estimated cost of completion and disposal. This update does not apply to inventory that is measured using last-in, first-out or the retail inventory method. This update should be applied prospectively and will be adopted by the Company in the first quarter of fiscal year 2018. Early adoption is permitted. The Company does not expect the adoption of this update to have a material impact on its consolidated financial statements. In January 2016, the FASB issued an update to ASC 825, Financial Instruments—Overall: Recognition and Measurement of Financial Assets and Financial Liabilities . This update consists of eight provisions that provide guidance on the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. This update should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption and prospectively for equity investments without readily determinable fair values. This update becomes effective and will be adopted by the Company in the first quarter of fiscal year 2019. Early adoption is permitted for two of the eight provisions. The Company is currently evaluating the impact of this update on its consolidated financial statements and related disclosures. In February 2016, the FASB issued an update to ASC 842, Leases , that will supersede the existing lease guidance, including on-balance sheet recognition of operating leases for lessees. This update should be applied using a modified retrospective approach and will be adopted by the Company in the first quarter of fiscal year 2020. Early adoption is permitted. The Company is currently evaluating the impact of this update on its consolidated financial statements.

Goodwill And Intangible Assets

Goodwill And Intangible Assets (Policies)	3 Months Ended
	Jan. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Goodwill Policy	The Company conducts its goodwill impairment test annually, as of the first day of the second fiscal quarter, and whenever events occur or facts and circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. For the annual goodwill impairment test, the Company uses the income approach, the market approach, or a combination thereof to determine each reporting unit’s fair value. The income approach provides an estimate of fair value based on discounted expected future cash flows (“DCF”). The market approach provides an estimate of fair value by applying various observable market-based multiples to the reporting unit’s operating results and then applying an appropriate control premium. For the fiscal year 2015 annual goodwill impairment test, the Company used a combination of approaches to estimate each reporting unit’s fair value. At the time that the fiscal year 2015 annual goodwill impairment test was performed, the Company believed that the income approach and the market approach were equally representative of a reporting unit’s fair value. Determining the fair value of a reporting unit requires judgment and involves the use of significant estimates and assumptions. The Company based its fair value estimates on assumptions it believes to be reasonable but are inherently uncertain. Estimates and assumptions with respect to the determination of the fair value of its reporting units using the income approach include, among other inputs: • The Company’s operating forecasts; • The Company’s forecasted revenue growth rates; and • Risk-commensurate discount rates and costs of capital. The Company’s estimates of revenues and costs are based on historical data, various internal estimates, and a variety of external sources, and are developed as part of the Company’s regular long-range planning process. The control premium used in market or combined approaches is determined by considering control premiums offered as part of the acquisitions that have occurred in market segments that are comparable with the Company’s reporting units.
Goodwill and Intangible Assets, Intangible Assets, Policy	Intangible assets other than goodwill are amortized on a straight-line basis over the following estimated remaining useful lives, unless the Company has determined these lives to be indefinite.
Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy	Acquired IPR&D are intangible assets accounted for as indefinite-lived assets until the completion or abandonment of the associated research and development efforts. If the research and development efforts associated with the IPR&D are successfully completed, then the IPR&D intangible assets will be amortized over the estimated useful lives to be determined as of the date the efforts are completed.

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurements (Policies)	3 Months Ended
	Jan. 30, 2016
Accounting Policies [Abstract]
Fair Value Transfer Policy	The Company applies fair value measurements for both financial and non-financial assets and liabilities. The Company does not have any non-financial assets or liabilities that are required to be measured at fair value on a recurring basis as of January 30, 2016 . The fair value accounting guidance permits companies to elect fair value measurement for many financial instruments and certain other items that are not required to be accounted for at fair value. The Company did not elect fair value measurement for any eligible financial instruments or other assets. Fair Value Hierarchy The Company utilizes a fair value hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. During the three months ended January 30, 2016 , the Company had no transfers between levels of the fair value hierarchy of its assets and liabilities measured at fair value.

Derivative Instruments and He26

Derivative Instruments and Hedging Activities Derivative Instruments And Hedging Activities (Policies)	3 Months Ended
	Jan. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives, Methods of Accounting, Hedging Derivatives	A majority of the Company’s revenue, expense, and capital purchasing activities are transacted in U.S. dollars. However, the Company is exposed to foreign currency exchange rate risk inherent in conducting business globally in numerous currencies. The Company is primarily exposed to foreign currency fluctuations related to operating expenses denominated in currencies other than the U.S. dollar, of which the most significant to its operations for the three months ended January 30, 2016 , were the British pound , the euro , the Indian rupee , the Chinese yuan , the Singapore dollar , the Swiss franc , and the Japanese yen . The Company has established a foreign currency risk management program to protect against the volatility of future cash flows caused by changes in foreign currency exchange rates. This program reduces, but does not eliminate, the impact of foreign currency exchange rate movements. The Company utilizes a rolling hedge strategy for the majority of its foreign currency derivative instruments to hedge exposures to the variability in the U.S. dollar equivalent of anticipated non-U.S.-dollar-denominated cash flows. All of the Company’s foreign currency forward contracts are single delivery, which are settled at maturity involving one cash payment. The Company’s foreign currency risk management program includes foreign currency derivatives with a cash flow hedge accounting designation that utilizes foreign currency forward and option contracts to hedge exposures to the variability in the U.S. dollar equivalent of anticipated non-U.S.-dollar-denominated cash flows. These instruments generally have a maturity of less than 15 months . For these derivatives, the Company initially reports the after-tax gain or loss from the effective portion of the hedge as a component of accumulated other comprehensive loss in stockholders’ equity and reclassifies it into earnings in the same period in which the hedged transaction affects earnings. The tax effect allocated to cash flow hedge-related components of other comprehensive loss was not significant for the three months ended January 30, 2016, and January 31, 2015 . Ineffective cash flow hedges are included in the Company’s net income as part of “ Interest and other income (loss), net .” The amount recorded on ineffective cash flow hedges was not significant for the three months ended January 30, 2016, and January 31, 2015 .

Goodwill And Intangible Asset27

Goodwill And Intangible Assets (Tables)	3 Months Ended
	Jan. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Goodwill Activity By Reportable Segment	The following table summarizes goodwill activity by reportable segment during the three months ended January 30, 2016 (in thousands): Storage Area Networking (“SAN”) Products Internet Protocol (“IP”) Networking Products Global Services Total Balance at October 31, 2015 Goodwill $ 176,325 $ 1,414,634 $ 155,416 $ 1,746,375 Accumulated impairment losses — (129,214 ) — (129,214 ) 176,325 1,285,420 155,416 1,617,161 Tax adjustments (1) (4 ) — — (4 ) Translation adjustments — (116 ) — (116 ) Balance at January 30, 2016 Goodwill 176,321 1,414,518 155,416 1,746,255 Accumulated impairment losses — (129,214 ) — (129,214 ) $ 176,321 $ 1,285,304 $ 155,416 $ 1,617,041 (1) The goodwill adjustments were primarily a result of tax benefits from the exercise of stock awards of acquired companies.
Schedule of Intangible Assets	The following tables present details of the Company’s intangible assets, excluding goodwill (in thousands, except for weighted-average remaining useful life): January 30, 2016 Gross Accumulated Net Weighted- Finite-lived intangible assets: Trade names $ 1,090 $ 471 $ 619 4.23 Core/developed technology (1) (2) 51,750 11,719 40,031 3.70 Patent portfolio license (3) 7,750 1,125 6,625 17.49 Customer relationships 23,110 3,233 19,877 6.94 Non-compete agreements 1,050 744 306 0.93 Patents with broader applications 1,040 58 982 14.13 Total finite-lived intangible assets 85,790 17,350 68,440 6.12 Indefinite-lived intangible assets, excluding goodwill: In-process research and development (“IPR&D”) (1) 2,850 — 2,850 Total indefinite-lived intangible assets, excluding goodwill 2,850 — 2,850 Total intangible assets, excluding goodwill $ 88,640 $ 17,350 $ 71,290 October 31, 2015 Gross Accumulated Net Weighted- Finite-lived intangible assets: Trade names $ 1,090 $ 415 $ 675 4.36 Core/developed technology (2) 40,530 9,605 30,925 3.49 Patent portfolio license (3) 7,750 849 6,901 17.74 Customer relationships 23,110 2,484 20,626 7.18 Non-compete agreements 1,050 664 386 1.17 Patents with broader applications 1,040 40 1,000 14.38 Total finite-lived intangible assets 74,570 14,057 60,513 6.55 Indefinite-lived intangible assets, excluding goodwill: IPR&D (1) 15,110 — 15,110 Total indefinite-lived intangible assets, excluding goodwill 15,110 — 15,110 Total intangible assets, excluding goodwill $ 89,680 $ 14,057 $ 75,623 (1) Acquired IPR&D are intangible assets accounted for as indefinite-lived assets until the completion or abandonment of the associated research and development efforts. If the research and development efforts associated with the IPR&D are successfully completed, then the IPR&D intangible assets will be amortized over the estimated useful lives to be determined as of the date the efforts are completed. During the three months ended January 30, 2016 , research and development efforts were completed on $12.3 million of the IPR&D intangible assets, and the completed IPR&D intangible assets are being amortized as Core/developed technology over an estimated useful life of five years . The research and development efforts associated with the remaining IPR&D intangible assets are expected to be completed in the second quarter of fiscal year 2016. (2) During the three months ended January 30, 2016 , $1.0 million of finite-lived intangible assets became fully amortized and, therefore, were removed from the balance sheet. (3) The patent portfolio license was assigned an estimated useful life that reflects the Company’s consumption of the expected defensive benefits related to this license to certain patents. The method of amortization for the patent portfolio license reflects the Company’s estimate of the pattern in which these expected defensive benefits will be used by the Company and is primarily based on the mix of expiration patterns of the individual patents included in the license.
Schedule Of Amortization Of Intangible Assets Included On Consolidated Statements Of Operations	The amortization of finite-lived intangible assets is included in the following line items of the Company’s Condensed Consolidated Statements of Income as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ 3,154 $ 637 General and administrative (1) 277 — Amortization of intangible assets 902 138 Total $ 4,333 $ 775 (1) The amortization is related to the $7.8 million of perpetual, nonexclusive license to certain patents purchased during the fiscal year ended October 31, 2015 .
Schedule Of Estimated Future Amortization Of Intangible Assets	The following table presents the estimated future amortization of finite-lived intangible assets as of January 30, 2016 (in thousands): Fiscal Year Estimated Future Amortization 2016 (remaining nine months) $ 12,894 2017 16,757 2018 12,238 2019 8,709 2020 7,620 Thereafter 10,222 Total $ 68,440

Balance Sheet Details (Tables)

Balance Sheet Details (Tables)	3 Months Ended
	Jan. 30, 2016
Balance Sheet Details [Abstract]
Schedule of Inventory	The following tables provide details of selected balance sheet items (in thousands): January 30, October 31, Inventories: Raw materials $ 18,433 $ 18,788 Finished goods 24,153 21,736 Inventories $ 42,586 $ 40,524
Schedule of Property, Plant and Equipment	January 30, October 31, Property and equipment, net: Gross property and equipment Computer equipment $ 16,262 $ 14,820 Software 68,456 67,625 Engineering and other equipment (1) 417,183 407,342 Furniture and fixtures (1) 32,262 31,028 Leasehold improvements 35,776 33,986 Land and building 385,539 385,415 Total gross property and equipment 955,478 940,216 Accumulated depreciation and amortization (1), (2) (513,320 ) (500,992 ) Property and equipment, net $ 442,158 $ 439,224 (1) Engineering and other equipment, furniture and fixtures, and accumulated depreciation and amortization include the following amounts under capital leases as of January 30, 2016 , and October 31, 2015 (in thousands): January 30, October 31, Cost $ 1,312 $ 1,312 Accumulated depreciation (939 ) (857 ) Property and equipment, net, under capital leases $ 373 $ 455 (2) The following table presents the depreciation of property and equipment included on the Company’s Condensed Consolidated Statements of Income (in thousands): Three Months Ended January 30, January 31, Depreciation expense $ 18,479 $ 18,800
Schedule of Capital Leased Assets	Engineering and other equipment, furniture and fixtures, and accumulated depreciation and amortization include the following amounts under capital leases as of January 30, 2016 , and October 31, 2015 (in thousands): January 30, October 31, Cost $ 1,312 $ 1,312 Accumulated depreciation (939 ) (857 ) Property and equipment, net, under capital leases $ 373 $ 455

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Jan. 30, 2016
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Measured At Fair Value	Assets and liabilities measured and recorded at fair value on a recurring basis as of January 30, 2016 , were as follows (in thousands): Fair Value Measurements Using Balance as of Quoted Prices in Significant Other Significant Assets: Money market funds (1) $ 1,115,461 $ 1,115,461 $ — $ — Derivative assets 212 — 212 — Total assets measured at fair value $ 1,115,673 $ 1,115,461 $ 212 $ — Liabilities: Derivative liabilities $ 2,638 $ — $ 2,638 $ — Total liabilities measured at fair value $ 2,638 $ — $ 2,638 $ — (1) Money market funds are reported within “Cash and cash equivalents” on the Company’s Condensed Consolidated Balance Sheets. Assets and liabilities measured and recorded at fair value on a recurring basis as of October 31, 2015 , were as follows (in thousands): Fair Value Measurements Using Balance as of Quoted Prices in Significant Other Significant Assets: Money market funds (1) $ 1,184,410 $ 1,184,410 $ — $ — Derivative assets 709 — 709 — Total assets measured at fair value $ 1,185,119 $ 1,184,410 $ 709 $ — Liabilities: Derivative liabilities $ 1,125 $ — $ 1,125 $ — Total liabilities measured at fair value $ 1,125 $ — $ 1,125 $ — (1) Money market funds are reported within “Cash and cash equivalents” on the Company’s Condensed Consolidated Balance Sheets.

Restructuring and Other Costs (

Restructuring and Other Costs (Tables)	3 Months Ended
	Jan. 30, 2016
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Other Charges	The following table provides details of “ Restructuring and other related benefits ” on the Company’s Condensed Consolidated Statements of Income (in thousands): Three Months Ended January 30, January 31, Lease loss reserve and related benefits (566 ) —
Schedule of Restructuring Reserve	The following table provides a reconciliation of the Company’s beginning and ending restructuring liability balances (in thousands): Fiscal 2013 Fourth Quarter Restructuring Plan Other Restructuring Plans Severance and Benefits Lease Loss Reserve and Related Costs Lease Loss Reserve and Related Costs Total Restructuring liabilities at October 31, 2015 $ 110 $ 1,811 $ 408 $ 2,329 Restructuring and other related benefits — (566 ) — (566 ) Cash payments — (161 ) (91 ) (252 ) Translation adjustment (2 ) (34 ) — (36 ) Restructuring liabilities at January 30, 2016 $ 108 $ 1,050 $ 317 $ 1,475 Current restructuring liabilities at January 30, 2016 $ 108 $ 405 $ 317 $ 830 Non-current restructuring liabilities at January 30, 2016 $ — $ 645 $ — $ 645

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Jan. 30, 2016
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	The following table provides details of the Company’s long-term debt (in thousands, except years and percentages): January 30, 2016 October 31, 2015 Maturity Stated Annual Interest Rate Amount Effective Interest Rate Amount Effective Interest Rate Convertible Senior Unsecured Notes: 2020 Convertible Notes 2020 1.375% $ 575,000 4.98 % $ 575,000 4.98 % Senior Unsecured Notes: 2023 Notes 2023 4.625% 300,000 4.83 % 300,000 4.83 % Capital lease obligations 2016 4.625% 215 4.63 % 298 4.63 % Total gross long-term debt 875,215 875,298 Unamortized discount (74,962 ) (79,196 ) Unamortized debt issuance costs (1,935 ) (2,025 ) Current portion of long-term debt (215 ) (298 ) Long-term debt, net of current portion $ 798,103 $ 793,779
Schedule of Carrying Values of Liability and Equity Components	The carrying values of the liability and equity components of the 2020 Convertible Notes are as follows (in thousands): January 30, October 31, Principal $ 575,000 $ 575,000 Unamortized discount of the liability component (72,161 ) (76,311 ) Net carrying amount of liability component $ 502,839 $ 498,689 Carrying amount of equity component $ 66,988 $ 70,765
Schedule Of Debt Maturities	As of January 30, 2016 , the Company’s aggregate debt maturities based on outstanding principal were as follows (in thousands): Fiscal Year Principal Balances 2016 (remaining nine months) $ 215 2017 — 2018 — 2019 — 2020 575,000 Thereafter 300,000 Total $ 875,215

Commitments And Contingencies (

Commitments And Contingencies (Tables)	3 Months Ended
	Jan. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Accrued Liability For Estimated Future Warranty Costs	The following table summarizes the activity related to the Company’s accrued liability for estimated future warranty costs during the three months ended January 30, 2016 , and January 31, 2015 (in thousands): Accrued Warranty Three Months Ended January 30, January 31, Beginning balance $ 7,599 $ 7,486 Liabilities accrued for warranties issued during the period 978 1,262 Warranty claims paid and used during the period (1,144 ) (1,114 ) Changes in liability for pre-existing warranties during the period (225 ) (446 ) Ending balance $ 7,208 $ 7,188

Derivative Instruments And He33

Derivative Instruments And Hedging Activities (Tables)	3 Months Ended
	Jan. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule Of Net Gains (Losses) Related To The Effective Portion Of Foreign Currency Derivatives	Net losses relating to the effective portion of foreign currency derivatives recorded in the Company’s Condensed Consolidated Statements of Income are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ (94 ) $ (136 ) Research and development (199 ) (35 ) Sales and marketing (374 ) (454 ) General and administrative (27 ) (58 ) Total $ (694 ) $ (683 )
Schedule Of Total Gross Notional Amounts, Presented By Currency	Total gross notional amounts, presented by currency, are as follows (in thousands): Derivatives Designated In U.S. dollars January 30, 2016 October 31, 2015 British pound $ 32,080 $ 46,330 Euro 30,249 40,961 India rupee 25,837 35,647 Chinese yuan 10,954 15,129 Singapore dollar 9,830 13,745 Swiss franc 6,708 9,265 Japanese yen 6,592 8,809 Total $ 122,250 $ 169,886

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Jan. 30, 2016
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Stock-Based Compensation Expense Included In Line Items Of Consolidated Statements Of Operations	Stock-based compensation expense, net of estimated forfeitures, is included in the following line items of the Company’s Condensed Consolidated Statements of Income as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Cost of revenues $ 2,905 $ 3,816 Research and development 5,476 4,933 Sales and marketing 11,078 9,843 General and administrative 4,585 5,490 Total stock-based compensation expense $ 24,044 $ 24,082
Stock-Based Compensation Expense By Grant Type	The following table presents stock-based compensation expense, net of estimated forfeitures, by grant type (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Stock options $ 729 $ 1,356 RSUs, including restricted stock units with market conditions 19,793 17,934 Employee stock purchase plan (“ESPP”) 3,522 4,792 Total stock-based compensation expense $ 24,044 $ 24,082
Stock-Based Compensation, Unrecognized Compensation Expense And Weighted-Average Period	The following table presents the unrecognized compensation expense, net of estimated forfeitures, by grant type and the related weighted-average periods over which this expense is expected to be recognized as of January 30, 2016 (in thousands, except for the weighted-average period): Unrecognized Compensation Expense Weighted- Average Period (In years) Stock options $ 1,820 0.99 RSUs, including restricted stock units with market conditions $ 121,904 1.99 ESPP $ 10,009 1.08
Schedule of Share-based Compensation, Activity	The following table presents details on grants made by the Company for the following periods: Three Months Ended January 30, 2016 January 31, 2015 Granted Weighted-Average Granted Weighted-Average Stock options — $ — 1,117 $ 3.09 RSUs, including stock units with market conditions 3,476 $ 7.96 3,641 $ 10.87 The total intrinsic value of stock options exercised for the three months ended January 30, 2016 , and January 31, 2015 , was $0.1 million and $1.0 million , respectively.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Jan. 30, 2016
Equity [Abstract]
Schedule of Dividends Payable [Table Text Block]	During the three months ended January 30, 2016 , the Company’s Board of Directors declared the following dividends (in thousands, except per share amounts): Declaration Date Dividend per Share Record Date Total Amount Paid Payment Date November 22, 2015 $ 0.045 December 10, 2015 $ 18,429 January 4, 2016
Schedule of Comprehensive Income (Loss) Tax Effects	The components of other comprehensive loss and related tax effects for the three months ended January 30, 2016 , and January 31, 2015 , are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Before-Tax Amount Tax (Expense) Benefit Net-of-Tax Amount Unrealized gains (losses) on cash flow hedges: Change in unrealized gains and losses, foreign exchange contracts $ (2,413 ) $ 113 $ (2,300 ) $ (2,179 ) $ 405 $ (1,774 ) Net gains and losses reclassified into earnings, foreign exchange contracts (1) 694 (68 ) 626 683 (80 ) 603 Net unrealized gains (losses) on cash flow hedges (1,719 ) 45 (1,674 ) (1,496 ) 325 (1,171 ) Foreign currency translation adjustments (2,203 ) — (2,203 ) (4,221 ) — (4,221 ) Total other comprehensive loss $ (3,922 ) $ 45 $ (3,877 ) $ (5,717 ) $ 325 $ (5,392 ) (1) For Condensed Consolidated Statements of Income classification of amounts reclassified from accumulated other comprehensive loss, see Note 10 , “ Derivative Instruments and Hedging Activities ,” of the Notes to Condensed Consolidated Financial Statements.
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in accumulated other comprehensive loss by component, net of tax, for the three months ended January 30, 2016 , and January 31, 2015 , are as follows (in thousands): Three Months Ended January 30, 2016 January 31, 2015 Losses on Cash Flow Hedges Foreign Currency Translation Adjustments Total Accumulated Other Comprehensive Loss Losses on Cash Flow Hedges Foreign Currency Translation Adjustments Total Accumulated Other Comprehensive Loss Beginning balance $ (1,539 ) $ (23,463 ) $ (25,002 ) $ (1,907 ) $ (16,907 ) $ (18,814 ) Change in unrealized gains and losses (2,300 ) (2,203 ) (4,503 ) (1,774 ) (4,221 ) (5,995 ) Net gains and losses reclassified into earnings 626 — 626 603 — 603 Net current-period other comprehensive loss (1,674 ) (2,203 ) (3,877 ) (1,171 ) (4,221 ) (5,392 ) Ending balance $ (3,213 ) $ (25,666 ) $ (28,879 ) $ (3,078 ) $ (21,128 ) $ (24,206 )

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Jan. 30, 2016
Segment Reporting [Abstract]
Schedule Of Financial Information By Reportable Segment	Summarized financial information by reportable segment for the three months ended January 30, 2016, and January 31, 2015 , based on the internal management reporting system, is as follows (in thousands): SAN Products IP Networking Products Global Services Total Three months ended January 30, 2016 Net revenues $ 347,058 $ 134,109 $ 93,117 $ 574,284 Cost of revenues 81,204 62,893 41,372 185,469 Gross margin $ 265,854 $ 71,216 $ 51,745 $ 388,815 Three months ended January 31, 2015 Net revenues $ 353,399 $ 132,839 $ 90,001 $ 576,239 Cost of revenues 85,725 64,201 36,630 186,556 Gross margin $ 267,674 $ 68,638 $ 53,371 $ 389,683

Net Income Per Share (Tables)

Net Income Per Share (Tables)	3 Months Ended
	Jan. 30, 2016
Earnings Per Share [Abstract]
Schedule Of Calculation Of Basic And Diluted Net Income (Loss) Per Share	The following table presents the calculation of basic and diluted net income per share (in thousands, except per share amounts): Three Months Ended January 30, January 31, Basic net income per share Net income $ 93,646 $ 87,267 Weighted-average shares used in computing basic net income per share 407,902 428,536 Basic net income per share $ 0.23 $ 0.20 Diluted net income per share Net income $ 93,646 $ 87,267 Weighted-average shares used in computing basic net income per share 407,902 428,536 Dilutive potential common shares in the form of stock options 1,332 1,734 Dilutive potential common shares in the form of other share-based awards 5,851 8,886 Weighted-average shares used in computing diluted net income per share 415,085 439,156 Diluted net income per share $ 0.23 $ 0.20 Antidilutive potential common shares in the form of: (1) Warrants issued in conjunction with the 2020 Convertible Notes (2) 36,200 7,140 Stock options 1,874 577 Other share-based awards 984 — (1) These amounts are excluded from the computation of diluted net income per share. (2) In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions as described in Note 8 , “ Borrowings .” The 2020 Convertible Notes have no impact on diluted earnings per share until the average quarterly price of the Company’s common stock exceeds the adjusted conversion price of $15.88 per share. If the common stock price exceeds this adjusted conversion price, then, prior to conversion, the Company will calculate the effect of the additional shares that may be issued using the treasury stock method. If the average price of the Company’s common stock exceeds $20.59 per share for a quarterly period, the Company’s weighted-average shares used in computing diluted net income per share will be impacted by the effect of the additional potential shares that may be issued related to the warrants using the treasury stock method. The convertible note hedge is not considered for purposes of the diluted earnings per share calculation, as its effect would be antidilutive.

Summary Of Significant Accoun38

Summary Of Significant Accounting Policies (Concentration of Risk Narrative)(Details)	3 Months Ended		12 Months Ended
	Jan. 30, 2016customer	Jan. 31, 2015customer	Oct. 31, 2015customer
Concentration Risk
Number of Financial Institutions	5
Customer Concentration Risk | Accounts Receivable
Concentration Risk
Number Of Customers Included In Concentration Disclosures	1		1
Customer Concentration Risk | Accounts Receivable | Major Customer One
Concentration Risk
Concentration Risk, Percentage	10.00%		17.00%
Customer Concentration Risk | Sales Revenue, Segment
Concentration Risk
Concentration Risk, Percentage	34.00%	44.00%
Number Of Customers Included In Concentration Disclosures	2	3
Customer Concentration Risk | Sales Revenue, Segment | Major Customer One
Concentration Risk
Concentration Risk, Percentage	20.00%	20.00%
Customer Concentration Risk | Sales Revenue, Segment | Major Customer Two
Concentration Risk
Concentration Risk, Percentage	14.00%	14.00%
Customer Concentration Risk | Sales Revenue, Segment | Major Customer Three
Concentration Risk
Concentration Risk, Percentage		10.00%

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - Series of Individually Immaterial Business Acquisitions [Member] - USD ($) $ in Millions	3 Months Ended
	Jan. 30, 2016	May. 02, 2015	Jan. 31, 2015
Business Acquisition [Line Items]
Purchase Consideration Transferred		$ 96.1
Payments to Acquire Businesses, Gross		95.5
Cash Acquired from Acquisition		0.1
Other Consideration Transferred		$ 0.5
Direct Business Acquisition Transaction Costs	$ 0		$ 0
Integration Related Costs	$ 0		$ 0
RSU Grant
Business Acquisition [Line Items]
Separately Recognized Transactions, Accounting Method	The RSUs are accounted for as stock-based compensation expense
Separately Recognized Transaction, Expense Recognized	$ 0.5
Cash Retention Award
Business Acquisition [Line Items]
Separately Recognized Transactions, Accounting Method	The cash awards are accounted for as employee compensation expense
Separately Recognized Transaction, Expense Recognized	$ 1.3

Goodwill And Intangible Asset40

Goodwill And Intangible Assets (Schedule Of Goodwill Activity By Reportable Segment) (Details) $ in Thousands	3 Months Ended
	Jan. 30, 2016USD ($)
Goodwill
Goodwill, Gross, Beginning Balance	$ 1,746,375
Accumulated impairment losses, Beginning Balance	(129,214)
Goodwill, Net, Beginning Balance	1,617,161
Goodwill, Tax and other adjustments	(4)	[1]
Goodwill, Translation Adjustments	(116)
Goodwill, Gross, Ending Balance	1,746,255
Accumulated impairment losses, Ending Balance	(129,214)
Goodwill, Net, Ending Balance	1,617,041
Storage Area Networking (“SAN”) Products
Goodwill
Goodwill, Gross, Beginning Balance	176,325
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	176,325
Goodwill, Tax and other adjustments	(4)	[1]
Goodwill, Translation Adjustments	0
Goodwill, Gross, Ending Balance	176,321
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	176,321
Internet Protocol (“IP”) Networking Products
Goodwill
Goodwill, Gross, Beginning Balance	1,414,634
Accumulated impairment losses, Beginning Balance	(129,214)
Goodwill, Net, Beginning Balance	1,285,420
Goodwill, Tax and other adjustments	0	[1]
Goodwill, Translation Adjustments	(116)
Goodwill, Gross, Ending Balance	1,414,518
Accumulated impairment losses, Ending Balance	(129,214)
Goodwill, Net, Ending Balance	1,285,304
Global Services
Goodwill
Goodwill, Gross, Beginning Balance	155,416
Accumulated impairment losses, Beginning Balance	0
Goodwill, Net, Beginning Balance	155,416
Goodwill, Tax and other adjustments	0	[1]
Goodwill, Translation Adjustments	0
Goodwill, Gross, Ending Balance	155,416
Accumulated impairment losses, Ending Balance	0
Goodwill, Net, Ending Balance	$ 155,416
[1]	The goodwill adjustments were primarily a result of tax benefits from the exercise of stock awards of acquired companies.

Goodwill And Intangible Asset41

Goodwill And Intangible Assets (Schedule Of Intangible Assets) (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Jan. 30, 2016		Oct. 31, 2015
Intangible Assets
Gross Carrying Value		$ 85,790		$ 74,570
Accumulated Amortization		17,350		14,057
Net Carrying Value		$ 68,440		$ 60,513
Weighted- Average Remaining Useful Life (in years)		6 years 1 month 13 days		6 years 6 months 18 days
Indefinite-Lived Intangible Assets (Excluding Goodwill)		$ 2,850		$ 15,110
Intangible Assets, Gross (Excluding Goodwill)		88,640		89,680
Intangible assets, net		71,290		75,623
Indefinite-lived Intangible Assets, Period Increase (Decrease)		$ 12,300
UsefulLifeofCompletedIPRD		5 years
CostofFullyAmortizedIntangibleAssets		$ 1,000
In Process Research and Development [Member]
Intangible Assets
Indefinite-Lived Intangible Assets (Excluding Goodwill)	[1]	2,850		15,110
Trade names
Intangible Assets
Gross Carrying Value		1,090		1,090
Accumulated Amortization		471		415
Net Carrying Value		$ 619		$ 675
Weighted- Average Remaining Useful Life (in years)		4 years 2 months 23 days		4 years 4 months 10 days
Core/developed technology (1) (2)
Intangible Assets
Gross Carrying Value	[2]	$ 51,750	[1]	$ 40,530
Accumulated Amortization	[2]	11,719	[1]	9,605
Net Carrying Value	[2]	$ 40,031	[1]	$ 30,925
Weighted- Average Remaining Useful Life (in years)	[2]	3 years 8 months 12 days	[1]	3 years 5 months 26 days
Patent portfolio license (3)
Intangible Assets
Gross Carrying Value	[3]	$ 7,750		$ 7,750
Accumulated Amortization	[3]	1,125		849
Net Carrying Value	[3]	$ 6,625		$ 6,901
Weighted- Average Remaining Useful Life (in years)	[3]	17 years 5 months 26 days		17 years 8 months 26 days
Customer relationships
Intangible Assets
Gross Carrying Value		$ 23,110		$ 23,110
Accumulated Amortization		3,233		2,484
Net Carrying Value		$ 19,877		$ 20,626
Weighted- Average Remaining Useful Life (in years)		6 years 11 months 8 days		7 years 2 months 5 days
Non-compete agreements
Intangible Assets
Gross Carrying Value		$ 1,050		$ 1,050
Accumulated Amortization		744		664
Net Carrying Value		$ 306		$ 386
Weighted- Average Remaining Useful Life (in years)		11 months 5 days		1 year 2 months 1 day
Patents with broader applications
Intangible Assets
Gross Carrying Value		$ 1,040		$ 1,040
Accumulated Amortization		58		40
Net Carrying Value		$ 982		$ 1,000
Weighted- Average Remaining Useful Life (in years)		14 years 1 month 17 days		14 years 4 months 17 days
[1]	Acquired IPR&D are intangible assets accounted for as indefinite-lived assets until the completion or abandonment of the associated research and development efforts. If the research and development efforts associated with the IPR&D are successfully completed, then the IPR&D intangible assets will be amortized over the estimated useful lives to be determined as of the date the efforts are completed. During the three months ended January 30, 2016, research and development efforts were completed on $12.3 million of the IPR&D intangible assets, and the completed IPR&D intangible assets are being amortized as Core/developed technology over an estimated useful life of five years. The research and development efforts associated with the remaining IPR&D intangible assets are expected to be completed in the second quarter of fiscal year 2016.
[2]	During the three months ended January 30, 2016, $1.0 million of finite-lived intangible assets became fully amortized and, therefore, were removed from the balance sheet.
[3]	The patent portfolio license was assigned an estimated useful life that reflects the Company’s consumption of the expected defensive benefits related to this license to certain patents. The method of amortization for the patent portfolio license reflects the Company’s estimate of the pattern in which these expected defensive benefits will be used by the Company and is primarily based on the mix of expiration patterns of the individual patents included in the license.

Goodwill And Intangible Asset42

Goodwill And Intangible Assets (Schedule Of Amortization Of Intangible Assets Included On Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 30, 2016	Jan. 31, 2015
Amortization of Finite-Lived Intangible Assets [Line Items]
Amortization		$ 4,333	$ 775
Payments to Acquire Intangible Assets		0	7,750
Cost of revenues
Amortization of Finite-Lived Intangible Assets [Line Items]
Amortization		3,154	637
Other Operating Income (Expense)
Amortization of Finite-Lived Intangible Assets [Line Items]
Amortization		902	138
General and administrative
Amortization of Finite-Lived Intangible Assets [Line Items]
Amortization	[1]	$ 277	$ 0
[1]	The amortization is related to the $7.8 million of perpetual, nonexclusive license to certain patents purchased during the fiscal year ended October 31, 2015.

Goodwill And Intangible Asset43

Goodwill And Intangible Assets (Schedule Of Estimated Future Amortization Of Intangible Assets) (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2016 (remaining nine months)	$ 12,894
2,017	16,757
2,018	12,238
2,019	8,709
2,020	7,620
Thereafter	10,222
Total	$ 68,440	$ 60,513

Balance Sheet Details (Schedule

Balance Sheet Details (Schedule of Inventory) (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 18,433	$ 18,788
Finished goods	24,153	21,736
Inventory, Net	$ 42,586	$ 40,524

Balance Sheet Details (Schedu45

Balance Sheet Details (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands		Jan. 30, 2016	Oct. 31, 2015
Property, Plant and Equipment
Property and equipment, gross		$ 955,478	$ 940,216
Less: Accumulated depreciation and amortization	[1],[2]	(513,320)	(500,992)
Total property and equipment, net		442,158	439,224
Computer equipment
Property, Plant and Equipment
Property and equipment, gross		16,262	14,820
Software
Property, Plant and Equipment
Property and equipment, gross		68,456	67,625
Engineering and other equipment
Property, Plant and Equipment
Property and equipment, gross	[1]	417,183	407,342
Furniture and fixtures
Property, Plant and Equipment
Property and equipment, gross	[1]	32,262	31,028
Leasehold improvements
Property, Plant and Equipment
Property and equipment, gross		35,776	33,986
Land and building
Property, Plant and Equipment
Property and equipment, gross		$ 385,539	$ 385,415
[1]	Engineering and other equipment, furniture and fixtures, and accumulated depreciation and amortization include the following amounts under capital leases as of January 30, 2016, and October 31, 2015 (in thousands): January 30, 2016 October 31, 2015Cost$1,312 $1,312Accumulated depreciation(939) (857)Property and equipment, net, under capital leases$373 $455
[2]	The following table presents the depreciation of property and equipment included on the Company’s Condensed Consolidated Statements of Income (in thousands): Three Months Ended January 30, 2016 January 31, 2015Depreciation expense$18,479 $18,800

Balance Sheet Details (Schedu46

Balance Sheet Details (Schedule of Capital Leased Assets) (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Capital Leases
Cost	$ 1,312	$ 1,312
Accumulated depreciation	(939)	(857)
Total	$ 373	$ 455

Balance Sheet Details (Narrativ

Balance Sheet Details (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Balance Sheet Details [Abstract]
Depreciation expense	$ 18,479	$ 18,800

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands		Jan. 30, 2016	Oct. 31, 2015
Assets
Money market funds	[1]	$ 1,115,461	$ 1,184,410
Derivative assets		212	709
Total assets measured at fair value		1,115,673	1,185,119
Liabilities
Derivative liabilities		2,638	1,125
Total liabilities measured at fair value		2,638	1,125
Quoted Prices In Active Markets For Identical Instruments (Level 1)
Assets
Money market funds	[1]	1,115,461	1,184,410
Derivative assets		0	0
Total assets measured at fair value		1,115,461	1,184,410
Liabilities
Derivative liabilities		0	0
Total liabilities measured at fair value		0	0
Significant Other Observable Inputs (Level 2)
Assets
Money market funds	[1]	0	0
Derivative assets		212	709
Total assets measured at fair value		212	709
Liabilities
Derivative liabilities		2,638	1,125
Total liabilities measured at fair value		2,638	1,125
Significant Unobservable Inputs (Level 3)
Assets
Money market funds	[1]	0	0
Derivative assets		0	0
Total assets measured at fair value		0	0
Liabilities
Derivative liabilities		0	0
Total liabilities measured at fair value		$ 0	$ 0
[1]	Money market funds are reported within “Cash and cash equivalents” on the Company’s Condensed Consolidated Balance Sheets.

Restructuring and Other Costs49

Restructuring and Other Costs (Schedule of Restructuring and Other Charges) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Restructuring Charges [Abstract]
Business Exit Costs	$ (566)	$ 0

Restructuring and Other Costs50

Restructuring and Other Costs (Schedule of Restructuring Reserve) (Details) $ in Thousands	3 Months Ended
	Jan. 30, 2016USD ($)
Restructuring
Initial Period in which Effects are Expected to be Realized	Cash payments for facilities that are part of the Company’s lease loss reserve are expected to be paid over the respective lease terms through fiscal year 2021.
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	$ 2,329
Restructuring Charges	(566)
Cash payments	(252)
Translation adjustment	(36)
Restructuring liabilities, Ending balance	1,475
Restructuring Reserve Ending Balance
Current restructuring liabilities	830
Non-current restructuring liabilities	$ 645
Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring
Restructuring and Related Activities, Description	During the fiscal year ended October 26, 2013, and the first quarter of fiscal year 2014, the Company restructured certain business operations and reduced the Company’s operating expense structure. The restructuring plan included a workforce reduction, as well as the cancellation of certain nonrecurring engineering agreements and exits from certain leased facilities. The restructuring plan was substantially completed in the first quarter of fiscal year 2014.
Restructuring Reserve, Adjustment Description	The Company reevaluates its estimates and assumptions on a quarterly basis and makes adjustments to the restructuring liabilities balance if necessary. During the three months ended January 30, 2016, the Company reversed $0.6 million of charges related to estimated facilities lease losses primarily due to a change in lease terms for a certain facility.
Other Restructuring Plans [Member]
Restructuring
Restructuring and Related Activities, Description	The Company also recorded charges related to estimated facilities lease losses, net of expected sublease income, due to consolidation of real estate space as a result of acquisitions.
Severance and Benefits | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	$ 110
Restructuring Charges	0
Cash payments	0
Translation adjustment	(2)
Restructuring liabilities, Ending balance	108
Restructuring Reserve Ending Balance
Current restructuring liabilities	108
Non-current restructuring liabilities	0
Lease Loss Reserve and Related Costs | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	1,811
Restructuring Charges	(566)
Cash payments	(161)
Translation adjustment	(34)
Restructuring liabilities, Ending balance	1,050
Restructuring Reserve Ending Balance
Current restructuring liabilities	405
Non-current restructuring liabilities	645
Lease Loss Reserve and Related Costs | Other Restructuring Plans [Member]
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	408
Restructuring Charges	0
Cash payments	(91)
Translation adjustment	0
Restructuring liabilities, Ending balance	317
Restructuring Reserve Ending Balance
Current restructuring liabilities	317
Non-current restructuring liabilities	$ 0

Borrowings (Schedule Of Long-Te

Borrowings (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jan. 31, 2015	Jan. 30, 2016	Oct. 31, 2015
Debt Instrument
Long-term debt, gross		$ 875,215	$ 875,298
Unamortized discount		(74,962)	(79,196)
Unamortized debt issuance costs		(1,935)	(2,025)
Current portion of long-term debt		(215)	(298)
Long-term debt, net of current portion		$ 798,103	793,779
Convertible Senior Unsecured 2020 Notes
Debt Instrument
Maturity	Jan. 1, 2020	Jan. 1, 2020
Stated annual interest rate		1.375%
Long-term debt, gross		$ 575,000	$ 575,000
Effective interest rate		4.98%	4.98%
Unamortized discount		$ (72,161)	$ (76,311)
Senior Unsecured 2023 Notes
Debt Instrument
Maturity		Jan. 15, 2023
Stated annual interest rate		4.625%
Long-term debt, gross		$ 300,000	$ 300,000
Effective interest rate		4.83%	4.83%
Capital Lease Obligations
Debt Instrument
Maturity		May 31, 2016
Stated annual interest rate		4.625%
Long-term debt, gross		$ 215	$ 298
Effective interest rate		4.63%	4.63%

Borrowings (Schedule of Carryin

Borrowings (Schedule of Carrying Values of Liability and Equity Components) (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Debt Instrument
Long-term debt, gross	$ 875,215	$ 875,298
Unamortized discount	(74,962)	(79,196)
Convertible Senior Unsecured 2020 Notes
Debt Instrument
Long-term debt, gross	575,000	575,000
Unamortized discount	(72,161)	(76,311)
Long-term Debt	502,839	498,689
Carrying amount of equity component	$ 66,988	$ 70,765

Borrowings (Narrative) (Details

Borrowings (Narrative) (Details) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2015USD ($)shares$ / shares	Jan. 30, 2016USD ($)shares$ / shares	Jan. 31, 2015USD ($)	Oct. 31, 2015USD ($)	Jan. 14, 2015USD ($)$ / sharesshares	Jan. 22, 2013USD ($)	Jan. 20, 2010USD ($)
Debt Instrument
Proceeds from convertible notes		$ 0	$ 565,656,000
Purchase of convertible hedge		0	86,135,000
Proceeds from issuance of warrants		$ 0	51,175,000
Senior Secured 2020 Notes
Debt Instrument
Debt Instrument, Face Amount							$ 300,000,000
Debt Instrument, Redemption Price, Percentage		103.438%
Irrevocable deposit					$ 322,200,000
Repayment of principal amount					300,000,000
Call premium					10,300,000
Debt Instrument, Increase, Accrued Interest			10,300,000
Unpaid interest deposited to escrow					1,600,000
Call premium cost and original issue discount and debt issuance costs related to lenders that did not participate in refinancing			20,400,000
Convertible Senior Unsecured 2020 Notes
Debt Instrument
Debt Instrument, Face Amount					$ 575,000,000
Proceeds from convertible notes	$ 565,700,000
DiscountRateForFairValueOfLiabilityComponent	4.57%
Debt Instrument, Convertible, Remaining Discount Amortization Period		3 years 11 months 1 day
Long-Term Debt, Fair Value		$ 532,800,000		$ 568,000,000
Maturity	Jan. 1, 2020	Jan. 1, 2020
Debt Instrument, Convertible, Conversion Ratio	62.7746	62.9573
Debt Instrument, Convertible, Number of Equity Instruments | shares	36.1	36.2
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 15.88			$ 15.93
Debt Instrument, Convertible, If-converted Value in Excess of Principal		$ 0
Repurchase price of notes in case of change in control, percentage of face value	100.00%
Shares Covered By Note Hedge | shares					36.1
Note Hedge, Exercise Price | $ / shares	$ 15.93	$ 15.88
Purchase of convertible hedge	$ 86,100,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares		36.2			36.1
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 20.59			$ 20.65
Class of Warrant or Right, Date from which Warrants or Rights Exercisable	Apr. 1, 2020
WarrantsMaturityPeriod	60 days
Proceeds from issuance of warrants	$ 51,200,000
Interest Expense, Debt [Abstract]
Amortization of Debt Discount		$ 4,200,000	700,000
Interest Expense, Debt, Excluding Amortization		2,000,000	$ 400,000
Senior Unsecured 2023 Notes
Debt Instrument
Debt Instrument, Face Amount						$ 300,000,000
Long-Term Debt, Fair Value		$ 289,000,000		$ 293,900,000
Maturity		Jan. 15, 2023
Repurchase price of notes in case of change in control, percentage of face value		101.00%
Debt Instrument, Redemption Price, Percentage		100.00%
Redemption amount of notes, percentage of principal amount, when using the net cash proceed from capital stock sale		35.00%
Redemption price, percentage of principal amount, when using the net cash proceed from capital stock sale		104.625%
Trading Price Trigger One | Convertible Senior Unsecured 2020 Notes
Debt Instrument
Debt Instrument, Convertible, Threshold Trading Days	20
Debt Instrument, Convertible, Threshold Consecutive Trading Days	30 days
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	130.00%
Trading Price Trigger Two | Convertible Senior Unsecured 2020 Notes
Debt Instrument
Debt Instrument, Convertible, Threshold Trading Days	5
Debt Instrument, Convertible, Threshold Consecutive Trading Days	10 days
Debt Instrument, Convertible, Threshold Percentage of Notes Price Trigger	98.00%

Borrowings (Schedule Of Debt Ma

Borrowings (Schedule Of Debt Maturities) (Details) - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Long-term Debt, by Maturity [Abstract]
2016 (remaining nine months)	$ 215
2,017	0
2,018	0
2,019	0
2,020	575,000
Thereafter	300,000
Long-term debt, gross	$ 875,215	$ 875,298

Commitments And Contingencies55

Commitments And Contingencies (Schedule Of Accrued Liability For Estimated Future Warranty Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Product Warranty Activity
Beginning balance	$ 7,599	$ 7,486
Liabilities accrued for warranties issued during the period	978	1,262
Warranty claims paid and used during the period	(1,144)	(1,114)
Changes in liability for pre-existing warranties during the period	(225)	(446)
Ending balance	$ 7,208	$ 7,188

Commitments And Contingencies56

Commitments And Contingencies (Purchase Commitment Narrative) (Details) (Details) - Inventory Purchase Commitment $ in Millions	Jan. 30, 2016USD ($)
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase Commitment, Remaining Minimum Amount Committed	$ 174
Purchase Commitment, Recognized Loss	$ 1.4

Derivative Instruments And He57

Derivative Instruments And Hedging Activities (Schedule Of Net Gains (Losses) Related To The Effective Portion Of Foreign Currency Derivatives) (Details) - Foreign Exchange Contract - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ (694)	$ (683)
Cost of revenues
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	(94)	(136)
Research and development
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	(199)	(35)
Sales and marketing
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	(374)	(454)
General and administrative
Derivative Instruments, Gain (Loss)
Net gains (losses) related to the effective portion of foreign currency derivatives	$ (27)	$ (58)

Derivative Instruments And He58

Derivative Instruments And Hedging Activities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Maximum derivative instrument maturity period	15 months
Foreign Currency Transaction [Abstract]
Foreign currency transaction gains (losses)	$ (0.3)	$ (1)
Derivatives Designated As Hedging Instruments | Other Current Assets [Member]
Derivative Instruments, Gain (Loss)
Gross unrealized gain positions	0.2
Derivatives Designated As Hedging Instruments | Other Current Liabilities [Member]
Derivative Instruments, Gain (Loss)
Gross unrealized loss positions	$ (2.6)

Derivative Instruments And He59

Derivative Instruments And Hedging Activities (Schedule Of Total Gross Notional Amounts, Presented By Currency) (Details) - Derivatives Designated As Hedging Instruments - USD ($) $ in Thousands	Jan. 30, 2016	Oct. 31, 2015
Derivative
Total gross notional amounts, presented by currency	$ 122,250	$ 169,886
United Kingdom, Pounds
Derivative
Total gross notional amounts, presented by currency	32,080	46,330
Euro Member Countries, Euro
Derivative
Total gross notional amounts, presented by currency	30,249	40,961
India, Rupees
Derivative
Total gross notional amounts, presented by currency	25,837	35,647
China, Yuan Renminbi
Derivative
Total gross notional amounts, presented by currency	10,954	15,129
Singapore, Dollars
Derivative
Total gross notional amounts, presented by currency	9,830	13,745
Switzerland, Francs
Derivative
Total gross notional amounts, presented by currency	6,708	9,265
Japan, Yen
Derivative
Total gross notional amounts, presented by currency	$ 6,592	$ 8,809

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock-Based Compensation Expense Included In Line Items Of Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	$ 24,044	$ 24,082
Cost of revenues
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	2,905	3,816
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	5,476	4,933
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	11,078	9,843
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation expense	$ 4,585	$ 5,490

Stock-Based Compensation (Sto61

Stock-Based Compensation (Stock-Based Compensation Expense By Grant Type) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award
Total stock-based compensation expense	$ 24,044	$ 24,082
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Total stock-based compensation expense	729	1,356
RSUs, including restricted stock units with market conditions
Share-based Compensation Arrangement by Share-based Payment Award
Total stock-based compensation expense	19,793	17,934
Employee stock purchase plan (“ESPP”)
Share-based Compensation Arrangement by Share-based Payment Award
Total stock-based compensation expense	$ 3,522	$ 4,792

Stock-Based Compensation (Sto62

Stock-Based Compensation (Stock-Based Compensation, Unrecognized Compensation Expense And Weighted-Average Period) (Details) $ in Thousands	3 Months Ended
	Jan. 30, 2016USD ($)
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 1,820
Weighted-Average Period (in years)	11 months 26 days
RSUs, including restricted stock units with market conditions
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 121,904
Weighted-Average Period (in years)	1 year 11 months 26 days
Employee stock purchase plan (“ESPP”)
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized Compensation Expense	$ 10,009
Weighted-Average Period (in years)	1 year 29 days

Stock-Based Compensation (Sched

Stock-Based Compensation (Schedule of Share-based Compensation, Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Stock options, Granted	0	1,117
Stock options, Weighted-Average Grant Date Fair Value (dollars per share)	$ 0	$ 3.09
Stock options, Exercises in Period, Total Intrinsic Value	$ 0.1	$ 1
RSUs, including restricted stock units with market conditions
Share-based Compensation Arrangement by Share-based Payment Award
RSUs, Granted	3,476	3,641
RSUs, Weighted-Average Grant Date Fair Value (dollars per share)	$ 7.96	$ 10.87

Stockholders' Equity Stockholde

Stockholders' Equity Stockholders' Equity (Schedule of Dividends Payable) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Dividends Payable [Line Items]
Cash dividends declared per share	$ 0.045	$ 0.035
Payments of Ordinary Dividends, Common Stock	$ 18,429	$ 15,106
Common Stock
Dividends Payable [Line Items]
Dividends Payable, Date Declared	Nov. 22, 2015
Cash dividends declared per share	$ 0.045
Dividends Payable, Date of Record	Dec. 10, 2015
Payments of Ordinary Dividends, Common Stock	$ 18,429
Dividends Payable, Date to be Paid	Jan. 4, 2016

Stockholders' Equity Stockhol65

Stockholders' Equity Stockholders' Equity (Details)	3 Months Ended
	Jan. 30, 2016
Equity [Abstract]
Stockholders' Equity Note, Derivative Transactions Connected with Contingently Convertible Securities	In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions with certain financial institutions with respect to its common stock. See Note 8, “Borrowings,” of the Notes to Condensed Consolidated Financial Statements for further discussion.

Stockholders' Equity (Schedule

Stockholders' Equity (Schedule of Comprehensive Income (Loss) Tax Effects) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jan. 30, 2016	Jan. 31, 2015
Unrealized gains (losses) on cash flow hedges, before tax
Change in unrealized gains and losses, foreign exchange contracts, before tax		$ (2,413)	$ (2,179)
Net gains and losses reclassified into earnings, foreign exchange contracts, before tax	[1]	694	683
Net unrealized losses on cash flow hedges, before tax		(1,719)	(1,496)
Foreign currency translation adjustments, before tax
Foreign currency translation adjustments, before tax		(2,203)	(4,221)
Total other comprehensive loss, before tax		(3,922)	(5,717)
Unrealized gains (losses) on cash flow hedges, tax
Change in unrealized gains and losses, foreign exchange contracts, tax		113	405
Net gains and losses reclassified into earnings, foreign exchange contracts, tax	[1]	(68)	(80)
Net unrealized losses on cash flow hedges, tax		45	325
Foreign currency translation adjustments, tax
Foreign currency translation adjustments, tax		0	0
Total other comprehensive loss, tax		45	325
Unrealized gains (losses) on cash flow hedges, net of tax
Change in unrealized gains and losses, foreign exchange contracts, net of tax		(2,300)	(1,774)
Net gains and losses reclassified into earnings, foreign exchange contracts, net of tax	[1]	626	603
Net unrealized gains (losses) on cash flow hedges		(1,674)	(1,171)
Foreign currency translation adjustments, net of tax
Foreign currency translation adjustments, net of tax		(2,203)	(4,221)
Total other comprehensive income (loss)		$ (3,877)	$ (5,392)
[1]	For Condensed Consolidated Statements of Income classification of amounts reclassified from accumulated other comprehensive loss, see Note 10, “Derivative Instruments and Hedging Activities,” of the Notes to Condensed Consolidated Financial Statements.

Stockholders' Equity (Schedul67

Stockholders' Equity (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Accumulated Other Comprehensive Income (Loss)
AOCI, Net of Tax, Beginning Balance	$ (25,002)	$ (18,814)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Change in unrealized gains and losses	(4,503)	(5,995)
Net gains and losses reclassified into earnings	626	603
Net current-period other comprehensive loss	(3,877)	(5,392)
AOCI, Net of Tax, Ending Balance	(28,879)	(24,206)
Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss)
AOCI, Net of Tax, Beginning Balance	(1,539)	(1,907)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Change in unrealized gains and losses	(2,300)	(1,774)
Net gains and losses reclassified into earnings	626	603
Net current-period other comprehensive loss	(1,674)	(1,171)
AOCI, Net of Tax, Ending Balance	(3,213)	(3,078)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss)
AOCI, Net of Tax, Beginning Balance	(23,463)	(16,907)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Change in unrealized gains and losses	(2,203)	(4,221)
Net gains and losses reclassified into earnings	0	0
Net current-period other comprehensive loss	(2,203)	(4,221)
AOCI, Net of Tax, Ending Balance	$ (25,666)	$ (21,128)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) $ in Millions	3 Months Ended
	Jan. 30, 2016USD ($)
Current Income Tax Expense (Benefit), Continuing Operations
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Income Tax Contingency
Unrecognized Tax Benefits	$ 126.6
Amount of unrecognized tax benefits that could affect the effect tax rate	87.4
Minimum [Member]
Income Tax Contingency
Decrease in Unrecognized Tax Benefits is Reasonably Possible	0
Maximum [Member]
Income Tax Contingency
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 4

Segment Information (Schedule O

Segment Information (Schedule Of Financial Information By Reportable Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Segment Reporting Information
Net revenues	$ 574,284	$ 576,239
Service	93,117	90,001
Cost of revenues	185,469	186,556
Gross margin	388,815	389,683
Storage Area Networking (“SAN”) Products
Segment Reporting Information
Net revenues	347,058	353,399
Cost of revenues	81,204	85,725
Gross margin	265,854	267,674
Internet Protocol (“IP”) Networking Products
Segment Reporting Information
Net revenues	134,109	132,839
Cost of revenues	62,893	64,201
Gross margin	71,216	68,638
Global Services
Segment Reporting Information
Net revenues	93,117	90,001
Cost of revenues	41,372	36,630
Gross margin	$ 51,745	$ 53,371

Segment Information Narrative (

Segment Information Narrative (Details)	3 Months Ended
	Jan. 30, 2016segments
Segment Reporting [Abstract]
Number of operating segments	3
Number of reportable operating segments	3

Net Income Per Share (Schedule

Net Income Per Share (Schedule Of Calculation Of Basic And Diluted Net Income (Loss) Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Jan. 30, 2016	Jan. 31, 2015	Jan. 14, 2015
Earnings Per Share, Basic
Net income		$ 93,646	$ 87,267
Weighted-average shares used in computing basic net income per share		407,902	428,536
Net income per share—basic		$ 0.23	$ 0.20
Earnings Per Share, Diluted
Net income		$ 93,646	$ 87,267
Weighted-average shares used in computing diluted net income per share		415,085	439,156
Net income per share—diluted		$ 0.23	$ 0.20
Weighted Average Number of Shares Outstanding Reconciliation
Weighted-average shares used in computing basic net income per share		407,902	428,536
Dilutive potential common shares in the form of stock options		1,332	1,734
Dilutive potential common shares in the form of other share-based awards		5,851	8,886
Weighted-average shares used in computing diluted net income per share		415,085	439,156
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares	[1]	1,874	577
Other share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares	[1]	984	0
Convertible Senior Unsecured 2020 Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Debt Instrument, Convertible, Conversion Price		$ 15.88		$ 15.93
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 20.59		$ 20.65
Convertible Senior Unsecured 2020 Notes | Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive potential common shares	[1],[2]	36,200	7,140
[1]	These amounts are excluded from the computation of diluted net income per share.
[2]	In connection with the issuance of the 2020 Convertible Notes, the Company entered into convertible note hedge and warrant transactions as described in Note 8, “Borrowings.” The 2020 Convertible Notes have no impact on diluted earnings per share until the average quarterly price of the Company’s common stock exceeds the adjusted conversion price of $15.88 per share. If the common stock price exceeds this adjusted conversion price, then, prior to conversion, the Company will calculate the effect of the additional shares that may be issued using the treasury stock method. If the average price of the Company’s common stock exceeds $20.59 per share for a quarterly period, the Company’s weighted-average shares used in computing diluted net income per share will be impacted by the effect of the additional potential shares that may be issued related to the warrants using the treasury stock method. The convertible note hedge is not considered for purposes of the diluted earnings per share calculation, as its effect would be antidilutive.