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Changes in Accounting Principles
 12 Months Ended
Oct. 02, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]  
Changes In Accounting Principles CHANGES IN ACCOUNTING PRINCIPLESIn June 2016, the FASB issued guidance that provides more decision-useful information about the expected credit losses on financial instruments and changes the loss impairment methodology. The guidance is effective for annual reporting periods and interim periods within those annual reporting periods beginning after December 15, 2019, our fiscal 2021. For available-for-sale debt securities previously impaired, the amendments should be applied prospectively; otherwise, the modified-retrospective transition method should be applied. We adopted this guidance in the first quarter of fiscal 2021 using the modified retrospective transition method. Prior periods were not adjusted and, based on our implementation assessment, no cumulative-effect adjustment was made to the opening balance of retained earnings. The adoption of this standard did not have a material impact on our consolidated financial statements. For further description of our policies for accounts receivable and investments refer to Note 1: Business and Summary of Significant Accounting Policies and to Note 14: Fair Value Measurements for available-for-sale debt securities.