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Employee Benefit Plans (Equity Compensation Plans) - Additional Information (Detail) - USD ($) $ in Millions			12 Months Ended
		Apr. 02, 2015	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012	May. 23, 2005
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding			3,928,000	3,947,000	3,983,000	3,920,000
Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)			3 years
Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)			4 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding			45,000	48,000
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant	[1]		11,883,000	12,155,000	8,472,000	7,352,000
2006 Employee Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement for options contractual term (in years)			7 years
Vesting period, (in years)			4 years
Additional reserved for future issuance under the 2006 Employee Plan		3,800,000
Shares available for future grant			11,900,000
2006 Employee Equity Incentive Plan | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding			3,900,000
2006 Employee Equity Incentive Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate stock options outstanding			6,600,000
2005 Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for future issuance			262,402				800,000
Restricted stock awards issued			343,070
Aggregate grant date fair value of restricted stock awards			$ 10.5
2005 Directors Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)			3 years
Aggregate restricted stock units outstanding			44,823
2005 Directors Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate stock options outstanding			76,369
Aggregate stock options granted under 2005 director plan			157,871
Fair value of option shares granted			$ 4.7
2005 Directors Plan | Stock Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)			3 years
2005 Directors Plan | Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)			4 years
Other Assumed Stock Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Assumed shares remaining outstanding			600,000
[1] Excluding shares reserved for future issuance under the 2005 Directors Plan.

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Aggregate number of common shares reserved for future issuance.

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-SubTopic 10
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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.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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