Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Lessee, Lease, Description [Line Items]
Typical term of leases (not exceeding)	10 years
Fixed operating lease costs	$ 2,100	$ 2,000	$ 2,000
Variable lease costs	16,100	13,800	13,900
Fixed operating lease payments	2,100	1,900	1,900
Right-of-use assets obtained in exchange for operating and finance lease liabilities	$ 2,800	$ 1,000	$ 2,100
Weighted-average remaining lease term	9 years 9 months 18 days	10 years 3 months 18 days
Weighted-average discount rate	3.40%	3.10%
Leases not yet commenced, fixed payment obligations	$ 13,308
Operating lease, lease not yet commenced
Lessee, Lease, Description [Line Items]
Leases not yet commenced, fixed payment obligations	$ 523
Minimum
Lessee, Lease, Description [Line Items]
Leases not yet commenced, lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Leases not yet commenced, lease term	21 years