Income Taxes	3 Months Ended
Income Taxes	Oct. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our interim income tax provisions are based on the effective income tax rate expected to be applicable for the full fiscal year, adjusted for specific items that are required to be recognized in the period in which they occur. Deferred tax assets and liabilities are based on the enacted tax rate that will apply in future periods when such assets and liabilities are expected to be settled or realized. Our effective income tax rate was 17.7% and 26.2% for the three months ended October 30, 2021 and October 24, 2020, respectively, and 17.2% and 41.2% for the nine months ended October 30, 2021 and October 24, 2020, respectively. The effective tax rate differs from the statutory rate primarily due to tax credits recognized, the impact of the vesting and exercise of share-based awards during the nine months ended October 30, 2021, and the difference in income tax rates from state to state where work was performed. Additionally, the three and nine months ended October 30, 2021, includes approximately $3.0 million for incremental tax benefits for credits related to tax filings for prior periods. Other fluctuations in our effective income tax rate from the statutory rate each period are mainly attributable to changes in unrecognized tax benefits, tax law changes, and variances in non-deductible and non-taxable items. Additionally, during the nine months ended October 24, 2020, our effective tax rate was impacted by a $53.3 million goodwill impairment charge which was mostly non-deductible for income tax purposes, and the benefit from a $2.6 million tax loss carryback technical correction under the CARES Act. During the second quarter of fiscal 2022, we were notified by the Internal Revenue Service that our federal income tax return for fiscal 2020 was selected for examination. We believe our provision for income taxes is adequate; however, any assessment may affect our results of operations and cash flows.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.