Debt - Summary of Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024
Debt Instrument [Line Items]
Total term debt principal	$ 91,281	$ 97,341
Unamortized premium/(discount) and issuance costs, net	(309)	(321)
Hedge accounting fair value adjustments	(294)	(358)
Total term debt	90,678	96,662
Less: Current portion of term debt	(12,350)	(10,912)
Total non-current portion of term debt	78,328	85,750
2013 – 2023 debt issuances | Fixed-rate notes
Debt Instrument [Line Items]
Total term debt principal	$ 86,781	$ 97,341
Debt instrument, maturity year (calendar), start	2025
Debt instrument, maturity year (calendar), end	2062
2013 – 2023 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 – 2023 debt issuances | Fixed-rate notes | Maximum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.85%
Debt instrument, effective interest rate	5.75%	6.65%
2025 debt issuance | Fixed-rate notes
Debt Instrument [Line Items]
Total term debt principal	$ 4,500
Debt instrument, maturity year (calendar), start	2028
Debt instrument, maturity year (calendar), end	2035
2025 debt issuance | Fixed-rate notes | Minimum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.00%
Debt instrument, effective interest rate	4.07%
2025 debt issuance | Fixed-rate notes | Maximum
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.75%
Debt instrument, effective interest rate	4.83%