Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jan. 31, 2015	Jan. 25, 2014
Cash flows from operating activities:
Net income	$ 87,267us-gaap_NetIncomeLoss	$ 80,884us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Excess tax benefits from stock-based compensation	(16,102)	(14,335)
Depreciation and amortization	19,575	38,754
Loss on disposal of property and equipment	444	2,348
Gain on sale of network adapter business	0	(4,884)
Amortization of debt issuance costs and debt discount	1,056	281
Call premium cost and write-off of debt discount and debt issuance costs related to lenders that did not participate in refinancing	15,122us-gaap_OtherNoncashExpense	0us-gaap_OtherNoncashExpense
Provision for doubtful accounts receivable and sales allowances	2,403us-gaap_ProvisionForDoubtfulAccounts	1,567us-gaap_ProvisionForDoubtfulAccounts
Non-cash stock-based compensation expense	24,082us-gaap_ShareBasedCompensation	18,588us-gaap_ShareBasedCompensation
Changes in assets and liabilities, net of acquisitions:
Increase (Decrease) in Restricted Cash	(11,918)	0
Accounts receivable	(17,256)	29,771
Inventories	1,155us-gaap_IncreaseDecreaseInInventories	2,097us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets	(5,746)	3,486
Deferred tax assets	494	95
Accounts payable	(8,776)	(8,077)
Accrued employee compensation	(77,033)	(39,208)
Deferred revenue	(2,190)	(5,414)
Other accrued liabilities	(1,423)	10,455
Restructuring liabilities	(761)	(6,939)
Net cash provided by operating activities	10,393	109,469
Cash flows from investing activities:
Purchases of property and equipment	(16,514)	(12,966)
Purchase of intangible assets	(7,750)	0
Proceeds from collection of note receivable	250	250
Proceeds from sale of network adapter business	0	9,995
Net cash used in investing activities	(24,014)	(2,721)
Cash flows from financing activities:
Payment of debt issuance costs	(409)us-gaap_PaymentsOfDebtIssuanceCosts	0us-gaap_PaymentsOfDebtIssuanceCosts
Payment of principal related to capital leases	(1,154)	(608)
Common stock repurchases	(128,966)	(140,380)
Proceeds from issuance of common stock	21,036	32,410
Payment of cash dividends to stockholders	(15,106)us-gaap_PaymentsOfDividendsCommonStock	0us-gaap_PaymentsOfDividendsCommonStock
Proceeds from convertible notes	565,656us-gaap_ProceedsFromConvertibleDebt	0us-gaap_ProceedsFromConvertibleDebt
Purchase of convertible hedge	(86,135)	0
Proceeds from issuance of warrants	51,175us-gaap_ProceedsFromIssuanceOfWarrants	0us-gaap_ProceedsFromIssuanceOfWarrants
Excess tax benefits from stock-based compensation	16,102	14,335
Increase in restricted cash	(300,000)	0
Net cash provided by (used in) financing activities	122,199	(94,243)
Effect of exchange rate fluctuations on cash and cash equivalents	(4,230)	(815)
Net increase in cash and cash equivalents	104,348	11,690
Cash and cash equivalents, beginning of period	1,255,017	986,997
Cash and cash equivalents, end of period	1,359,365	998,687
Supplemental disclosures of cash flow information:
Cash paid for interest	17,333us-gaap_InterestPaid	17,265us-gaap_InterestPaid
Cash paid for income taxes	$ 13,128us-gaap_IncomeTaxesPaidNet	$ 4,074us-gaap_IncomeTaxesPaidNet

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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- Definition

The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (a)

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

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The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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-Glossary Financing Activities

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Aggregate cash proceeds received from a combination of transactions in which noncurrent assets are sold, which may include the sale of a business, an investment in an affiliate (including an equity method investee), property, plant and equipment and intangible assets. Excludes sales of trading, available-for-sale, and held-to-maturity securities.

+ References

No definition available.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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-Publisher FASB

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-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

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-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.5)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

-Paragraph 15

-Subparagraph (b)

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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