Income Taxes	6 Months Ended
Income Taxes	Mar. 28, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rates for the first half of fiscal 2021 and 2020 were 19.2% and 19.5%, respectively. Income tax expense was reduced by $8.0 million and $6.7 million of excess tax benefits on share-based payments in the first half of fiscal 2021 and 2020, respectively. Excluding the impact of the excess tax benefits on share-based payments, our effective tax rates in the first half of fiscal 2021 and 2020 were 25.8% and 25.9%, respectively. As of March 28, 2021 and September 27, 2020, the liability for income taxes associated with uncertain tax positions was $10.0 million and $9.7 million, respectively. These uncertain tax positions substantially relate to ongoing examinations, which are reasonably likely to be resolved within the next 12 months. These liabilities represent our current estimates of the additional tax liabilities that we may be assessed when the related audits are concluded. If these audits are resolved in a manner more unfavorable than our current expectations, our additional tax liabilities could be materially higher than the amounts currently recorded resulting in additional tax expense.

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.