Debt Long-term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2026	Sep. 28, 2025	Sep. 29, 2024
Long-term Debt [Abstract]
Long-term debt, Principal amount	$ 15,107	$ 15,107
Unamortized discount including debt issuance costs	(175)	(201)
Hedge accounting adjustments	(319)	(95)
Debt, Long-term and Short-term, Combined Amount	14,613	14,811
Long-term debt, Current Maturities	1,993	0
Long-term Debt, Excluding Current Maturities	12,620	14,811
Future principal payments, Fiscal 2027	2,000
Future principal payments, Fiscal 2028	962
Future principal payments, Fiscal 2029	0
Future principal payments, Fiscal 2030	1,700
Future principal payments, Fiscal 2031	0
Future principal payments, after Fiscal 2031	10,445
Long-term Debt, Fair value	13,300
Interest paid related to commercial paper and long-term debt, net of cash received from the related interest rate swaps	642	614	$ 656
Fixed rate notes
Long-term Debt [Abstract]
Long-term debt, Principal amount	$ 15,107	$ 15,107
Debt Instrument Maturity Date Range Start	2027	2027
Debt Instrument Maturity Date Range End	2053	2053
Fixed rate notes | Minimum
Long-term Debt [Abstract]
Long-term debt, Effective Interest Rate	2.63%	2.39%
Fixed rate notes | Maximum
Long-term Debt [Abstract]
Long-term debt, Effective Interest Rate	6.06%	5.12%