Income Taxes	6 Months Ended
Apr. 27, 2013
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 income tax rate due to state taxes, the effect of non-U.S. operations, non-deductible stock-based compensation expense and adjustments to unrecognized tax benefits. For the three and six months ended April 27, 2013, the Company recorded an income tax benefit of $0.2 million and tax expense of $88.1 million, respectively. The tax reported included a discrete benefit of $10.6 million from reserve releases resulting from the settlement of an IRS audit for the three months ended April 27, 2013, and a discrete charge of $78.2 million to reduce previously recognized California deferred tax assets due to California law changes, partially offset by a discrete benefit from an increase in the federal research and development tax credit of $5.7 million that was reinstated on January 2, 2013, for two years and made retroactive to January 1, 2012, for the six months ended April 27, 2013. For the three and six months ended April 28, 2012, the Company recorded an income tax benefit of $0.7 million and $3.9 million, respectively, primarily due to a discrete benefit from net reserve releases related to settling tax audits and from expiring statutes of limitations, offset by a decrease to the federal research and development tax credit which expired on December 31, 2011, and, therefore, was not applicable in 2012. The total amount of unrecognized tax benefits of $72.9 million, net of federal benefit, as of April 27, 2013, would affect the Company’s effective tax rate, if recognized. Although the timing of the closure of audits is highly uncertain, it is reasonably possible that the balance of unrecognized tax benefits could change during the remainder of fiscal year 2013. The IRS and other tax authorities regularly examine the Company’s income tax returns. The IRS is currently examining fiscal years 2009 and 2010. In addition, the Company is in negotiations with foreign tax authorities to obtain correlative relief on transfer pricing adjustments previously settled with the IRS. 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. The Company believes that before the end of fiscal year 2013, 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 our unrecognized tax benefits. Taking into consideration the inherent uncertainty as to settlement terms, the timing of payments and the impact of such settlements on other uncertain tax positions, the Company estimates the range of potential decreases in underlying uncertain tax positions is between $0 and $3.9 million in the next twelve months. The Company believes that sufficient positive evidence exists from historical operations and projections of taxable income in future years to conclude that it is more likely than not that the Company will realize its deferred tax assets except for California deferred tax assets and capital loss carryforwards. Accordingly, the Company applies a valuation allowance to the California deferred tax assets due to the recent change in California law and to capital loss carryforwards due to the limited carryforward periods of these tax assets.

Income Taxes

In general, the Company’s provision for income taxes differs from the tax computed at the U.S. federal statutory income tax rate due to state taxes, the effect of non-U.S. operations, non-deductible stock-based compensation expense and adjustments to unrecognized tax benefits.

For the three and six months ended April 27, 2013, the Company recorded an income tax benefit of $0.2 million and tax expense of $88.1 million, respectively. The tax reported included a discrete benefit of $10.6 million from reserve releases resulting from the settlement of an IRS audit for the three months ended April 27, 2013, and a discrete charge of $78.2 million to reduce previously recognized California deferred tax assets due to California law changes, partially offset by a discrete benefit from an increase in the federal research and development tax credit of $5.7 million that was reinstated on January 2, 2013, for two years and made retroactive to January 1, 2012, for the six months ended April 27, 2013.

For the three and six months ended April 28, 2012, the Company recorded an income tax benefit of $0.7 million and $3.9 million, respectively, primarily due to a discrete benefit from net reserve releases related to settling tax audits and from expiring statutes of limitations, offset by a decrease to the federal research and development tax credit which expired on December 31, 2011, and, therefore, was not applicable in 2012.

The total amount of unrecognized tax benefits of $72.9 million, net of federal benefit, as of April 27, 2013, would affect the Company’s effective tax rate, if recognized. Although the timing of the closure of audits is highly uncertain, it is reasonably possible that the balance of unrecognized tax benefits could change during the remainder of fiscal year 2013.

The IRS and other tax authorities regularly examine the Company’s income tax returns. The IRS is currently examining fiscal years 2009 and 2010. In addition, the Company is in negotiations with foreign tax authorities to obtain correlative relief on transfer pricing adjustments previously settled with the IRS. 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. The Company believes that before the end of fiscal year 2013, 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 our unrecognized tax benefits. Taking into consideration the inherent uncertainty as to settlement terms, the timing of payments and the impact of such settlements on other uncertain tax positions, the Company estimates the range of potential decreases in underlying uncertain tax positions is between $0 and $3.9 million in the next twelve months.

The Company believes that sufficient positive evidence exists from historical operations and projections of taxable income in future years to conclude that it is more likely than not that the Company will realize its deferred tax assets except for California deferred tax assets and capital loss carryforwards. Accordingly, the Company applies a valuation allowance to the California deferred tax assets due to the recent change in California law and to capital loss carryforwards due to the limited carryforward periods of these tax assets.