Debt - Summary of Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 24, 2022
Debt Instrument [Line Items]
Total term debt principal	$ 106,572	$ 111,824
Unamortized premium/(discount) and issuance costs, net	(356)	(374)
Hedge accounting fair value adjustments	(1,113)	(1,363)
Total term debt	105,103	110,087
Less: Current portion of term debt	(9,822)	(11,128)
Total non-current portion of term debt	95,281	98,959
2013 – 2022 debt issuances | Fixed-rate notes
Debt Instrument [Line Items]
Total term debt principal	$ 101,322	$ 111,824
Debt instrument, maturity year (calendar), start	2024
Debt instrument, maturity year (calendar), end	2062
2013 – 2022 debt issuances | Fixed-rate notes | Minimum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	0.00%
Debt instrument, effective interest rate	0.03%	0.03%
2013 – 2022 debt issuances | Fixed-rate notes | Maximum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.65%
Debt instrument, effective interest rate	6.72%	4.78%
Third quarter 2023 debt issuance | Fixed-rate notes
Debt Instrument [Line Items]
Total term debt principal	$ 5,250	$ 0
Debt instrument, maturity year (calendar), start	2026
Debt instrument, maturity year (calendar), end	2053
Third quarter 2023 debt issuance | Fixed-rate notes | Minimum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.00%
Debt instrument, effective interest rate	4.04%
Third quarter 2023 debt issuance | Fixed-rate notes | Maximum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.85%
Debt instrument, effective interest rate	4.88%