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. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	1,804	1,825	1,828
Weighted average dilutive impact of Awards	7	6	2
Weighted Average Number of Shares Outstanding, Diluted	1,811	1,831	1,830
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	13	24	24