Description Of Business and Basis Of Presentation (Policies)	3 Months Ended
	Dec. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Fiscal Period	The Company’s fiscal year ends on the Friday closest to September 30. The fiscal year ending on September 27, 2024 consists of 52 weeks (“fiscal 2024”). The fiscal year ended on September 29, 2023 consisted of 52 weeks (“fiscal 2023”). The three months ended December 29, 2023, and December 30, 2022, each consisted of 13 weeks.
Property, Plant and Equipment, Policy	Property, Plant, and Equipment Property, plant, and equipment are carried at cost less accumulated depreciation, with significant renewals and betterments being capitalized and retired equipment written off in the respective periods. Maintenance and repairs are expensed as incurred. Depreciation is calculated using the straight-line method over the estimated useful lives, which range from five to forty years for buildings and improvements and from five to ten years for machinery and equipment. Leasehold improvements are depreciated over the lesser of the economic life or the life of the associated lease.
New Accounting Pronouncements, Policy	Recently Issued Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosure” (“ASU 2023-07”). ASU 2023-07 requires disclosure of incremental segment information on an annual and interim basis. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, on a retrospective basis. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2023-07 on its consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09,“Income Taxes (Topic 740): Improvements to Income Tax Disclosures” (“ASU 2023-09”). ASU 2023-09 includes amendments that further enhance income tax disclosures, primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, on either a prospective or retrospective basis, with early adoption permitted. The Company is currently evaluating the impact of ASU 2023-09 on its consolidated financial statements and related disclosures.
Use of Estimates, Policy	During the three months ended December 29, 2023, the Company changed its accounting estimate for the expected useful lives of certain machinery and equipment. The Company evaluated its current asset base and reassessed the estimated useful lives of certain machinery and equipment in connection with its recent usage of older equipment, including considering the technological and physical obsolescence of such machinery and equipment. Based on its ability to re-use equipment across generations of process technologies and historical usage trends, the Company determined that the expected useful lives for certain machinery and equipment should be increased by up to two years to reflect more closely the estimated economic lives of those assets. This change in estimate was applied prospectively effective for the first quarter of fiscal 2024 and resulted in a decrease in depreciation expense of $22.9 million for the three months ended December 29, 2023. This benefit increased income from operations by $2.6 million and decreased ending inventory by $20.3 million as of December 29, 2023. As a result of this change in accounting estimate, net income increased by $2.6 million and diluted earnings per share increased by $0.02 for the three months ended December 29, 2023.