Noncontrolling Interests - Summary of Common Stock Outstanding (Details)	3 Months Ended
	Dec. 24, 2022 shares
Common Stock, Shares, Outstanding [Roll Forward]
Beginning of period (in shares)	553,889,249
Issuance (in shares)	17,500
End of period (in shares)	553,906,749
Symbotic, Inc.
Common Stock, Shares, Outstanding [Roll Forward]
Ownership percentage	100.00%
Class A Common Stock
Common Stock, Shares, Outstanding [Roll Forward]
Beginning of period (in shares)	57,718,836
Issuance (in shares)	17,500
Exchanges (in shares)	848,354
End of period (in shares)	58,584,690
Class A Common Stock \| Symbotic, Inc.
Common Stock, Shares, Outstanding [Roll Forward]
Ownership percentage	10.60%
Class V-1 and Class V-3 Common Stock
Common Stock, Shares, Outstanding [Roll Forward]
Beginning of period (in shares)	496,170,413
Issuance (in shares)	0
Exchanges (in shares)	(848,354)
End of period (in shares)	495,322,059
Class V-1 and Class V-3 Common Stock \| Symbotic, Inc.
Common Stock, Shares, Outstanding [Roll Forward]
Ownership percentage	89.40%