Income Taxes (Details) (USD $) In Thousands	3 Months Ended
Jan. 28, 2011	Jan. 29, 2010	Oct. 29, 2010
Income Taxes
Liability recorded for gross unrecognized tax benefits			$ 17,817
Unrecognized tax benefits would affect the effective tax rate			15,646
Accrued interest and penalties			5,907
U.S. federal research and development tax credit	1,250
Reduction in unrecognized tax benefits due to settlement of income tax audits		7,244
Net decrease to tax expense		$ (4,821)

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to research tax credits generated or utilized under enacted tax laws during the period.

+ References

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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.

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- Definition

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

+ References

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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