Summary of Significant Accounting Policies - Reconciliation of Weighted Average Number of Common and Common Equivalent Shares Outstanding and Number of Awards Excluded from Diluted Earnings Per Share (Detail) - shares shares in Millions	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Oct. 01, 2022
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	1,825	1,828	1,822
Weighted average dilutive impact of Awards	6	2	5
Weighted Average Number of Shares Outstanding, Diluted	1,831	1,830	1,827
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	24	24	15