Additional shares authorized under the plan during the period

No definition available.

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- Definition

Defined contribution plan employee contribution maximum rate.

+ References

No definition available.

+ Details

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- Definition

Defined contribution plan maximum matching contribution by company.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Expiration Date For Stock Options And Stock Appreciation Rights Maximum Time From Grant Date

+ References

No definition available.

+ Details

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- Definition

Expiration date for stock options and stock appreciation rights maximum time from grant date, for more than 10% owners.

+ References

No definition available.

+ Details

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- Definition

Minimum fair market value of the shares granted to principal shareholder

+ References

No definition available.

+ Details

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- Definition

Minimum percentage holding requirement for principal shareholder

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Number of purchase periods within one offering period.

+ References

No definition available.

+ Details

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- Definition

The period during which rights to purchase stock under the ESPP are outstanding.

+ References

No definition available.

+ Details

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- Definition

Duration of Plan Purchase Period within Offering Period

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Reduction in number of shares available for issuance.

+ References

No definition available.

+ Details

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- Definition

Shares remaining for future issuance.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
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- Definition

The maximum number of additional shares approved to be added to the original reserve under the plan, when shares issued under previous plans are forfeited

+ References

No definition available.

+ Details

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 11

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The discount rate from market value on offering date that participants pay for shares.

+ References

+ Details

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 65

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ References

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

The maximum number of shares (or other type of equity) that have been approved for issuance in the equity-based payment transaction.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 50

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Employee Compensation Plans Employee Compensation Plans (Narrative) (Details) (USD $)	12 Months Ended		12 Months Ended			3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended			12 Months Ended
	Oct. 26, 2013 Equity Compensation Plans	Oct. 27, 2012 Equity Compensation Plans	Oct. 26, 2013 Equity Compensation Plans Minimum	Oct. 26, 2013 Equity Compensation Plans Maximum	Oct. 26, 2013 2013 Inducement Award Plan	Apr. 28, 2012 2009 Stock Plan	Oct. 26, 2013 2009 Stock Plan	Oct. 26, 2013 2009 Director Plan	Apr. 28, 2012 2009 Employee Stock Purchase Plan	Oct. 26, 2013 2009 Employee Stock Purchase Plan	Oct. 26, 2013 1999 Nonstatutory Stock Option Plan	Oct. 26, 2013 Mcdata Equity Plans	Oct. 26, 2013 Employee 401 K Plan	Oct. 27, 2012 Employee 401 K Plan	Oct. 29, 2011 Employee 401 K Plan
Share-based Compensation Arrangement by Share-based Payment Award
Additional shares authorized under plan						35,000,000			30,000,000
Shares authorized for issuance under plan	90,600,000	126,700,000			2,400,000		83,000,000	2,000,000		65,000,000		800,000
Maximum number of shares to be added to the plan							40,300,000	900,000
Shares available for issuance under plan	56,800,000	76,000,000								27,900,000
Maximum payroll deductions										15.00%
Discount from Market Price At Offering Date										85.00%
Maximum number of shares to be purchased per employee										3,750
Plan Offering Period										24 months
Plan Purchase Period										6 months
Number of purchase periods										4
Reduction In Number Of Shares Available For Issuance	1.56
Minimum Percentage Holding Requirement For Principal Shareholder	10.00%
Minimum Fair Market Value Of The Shares Granted To Principal Shareholder	110.00%
Expiration Date For Stock Options And Stock Appreciation Rights Maximum Time From Grant Date - 10% owners	5 years
Expiration Date For Stock Options And Stock Appreciation Rights Maximum Time From Grant Date	7 years
Award vesting period			3 years	4 years
Shares reserved for issuance under director plan											51,400,000
Shares Remaining For Future Issuance											200,000
Company's matching contributions to the 401(k) Plan													$ 9,200,000	$ 9,100,000	$ 9,300,000
Maximum contribution by employee													$ 3,000
Employee contribution maximum rate													60.00%