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Income Taxes
 9 Months Ended
Jul. 03, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income TaxesThe effective tax rate for the three and nine months ended July 3, 2021 were 25.7% and 23.9%, respectively. The effective tax rate for the three and nine months ended July 3, 2021 is higher than expected from applying the U.S. federal statutory tax rate of 21% to earnings before income taxes due to tax on earnings generated outside the U.S. Further, there were beneficial provision to return adjustments primarily associated with an increase in the U.S. R&D tax credit. This benefit was offset by an expense resulting from the revaluation of deferred tax liabilities due to a tax rate increase in the UK.The effective tax rate for the three and nine months ended June 27, 2020 were 46.1% and 17%, respectively. The effective tax rate for the three months and nine months ended June 27, 2020 varies from what would be expected by applying the U.S. federal statutory tax rate of 21% to earnings before income taxes, primarily due to provision to return adjustments associated with an increase in foreign tax credit utilization. The effective tax rate for the three months ended June 27, 2020 also reflects a low earnings before income taxes base.