Unaudited Condensed Consolidated Statements of Changes in Equity (Deficit) - USD ($) $ in Thousands	Total	Class A Common Stock	Common Stock	Common Stock Class A Common Stock	Common Stock Class V-1 Common Stock	Common Stock Class V-3 Common Stock	Additional Paid-in Capital - Warrants	Additional Paid-in Capital As Restated	Accumulated Other Comprehensive Loss	Accumulated Deficit As Restated	Noncontrolling Interest As Restated
Beginning balance (in shares) at Sep. 24, 2022				57,718,836	79,237,388	416,933,025
Beginning balance at Sep. 24, 2022	$ 68,940			$ 6	$ 8	$ 42	$ 58,126	$ 1,237,865	$ (2,294)	$ (1,286,569)	$ 61,756
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(162,479)									(17,658)	(144,821)
Issuance of common stock under stock plans, net of shares withheld for employee taxes (in shares)				1,841,753
Issuance of common stock under stock plans, net of shares withheld for employee taxes	(11,717)							(1,157)			(10,560)
Issuance of common stock under employee stock purchase plan, net of shares withheld for employee taxes (in shares)				98,171
Stock Issued During Period, Value, Employee Stock Purchase Plan	987							119			868
Exchange of Class V-1 and V-3 common stock (in shares)				2,782,949	(2,782,949)
Exchange of Class V-1 and V-3 common stock	$ 0							238			(238)
Issuance of common stock in connection with equity offering (in shares)	1,939,924	1,939,924
Cancellation of Class V-1 common stock (in shares)	(367,694)	0			(367,694)
Stock-based compensation	$ 121,762							13,290			108,472
Other comprehensive loss	4,138								460		3,678
Ending balance (in shares) at Jun. 24, 2023				62,441,709	76,086,745	416,933,025
Ending balance at Jun. 24, 2023	21,631			$ 6	$ 8	$ 42	58,126	1,250,355	(1,834)	(1,304,227)	19,155
Beginning balance (in shares) at Mar. 25, 2023				61,283,689	77,080,090	416,933,025
Beginning balance at Mar. 25, 2023	21,441			$ 6	$ 8	$ 42	58,126	1,246,152	(2,086)	(1,299,880)	19,073
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(39,077)									(4,347)	(34,730)
Issuance of common stock under stock plans, net of shares withheld for employee taxes (in shares)				164,675
Issuance of common stock under stock plans, net of shares withheld for employee taxes	0							6			(6)
Exchange of Class V-1 and V-3 common stock (in shares)				993,345	(993,345)
Exchange of Class V-1 and V-3 common stock	$ 0							38			(38)
Issuance of common stock in connection with equity offering (in shares)	164,675	164,675
Cancellation of Class V-1 common stock (in shares)	0	0
Stock-based compensation	$ 36,999							4,159			32,840
Other comprehensive loss	2,268								252		2,016
Ending balance (in shares) at Jun. 24, 2023				62,441,709	76,086,745	416,933,025
Ending balance at Jun. 24, 2023	21,631			$ 6	$ 8	$ 42	58,126	1,250,355	(1,834)	(1,304,227)	19,155
Beginning balance (in shares) at Sep. 30, 2023				82,112,881	66,931,097	407,528,941
Beginning balance at Sep. 30, 2023	(2,716)			$ 8	$ 7	$ 41	58,126	1,254,022	(1,687)	(1,310,435)	(2,798)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(100,626)							0		(16,326)	(84,300)
Issuance of common stock under stock plans, net of shares withheld for employee taxes (in shares)				5,849,738
Issuance of common stock under stock plans, net of shares withheld for employee taxes	(3,152)		$ 1					(3,103)			(50)
Issuance of common stock under employee stock purchase plan, net of shares withheld for employee taxes (in shares)				102,633
Stock Issued During Period, Value, Employee Stock Purchase Plan	3,501							3,501
Exchange of Class V-1 and V-3 common stock (in shares)				8,530,867	(5,311,122)	(3,219,745)
Exchange of Class V-1 and V-3 common stock	$ 0			$ 2	$ (2)			(1,064)			1,064
Issuance of common stock in connection with equity offering (in shares)	28,322,782	12,452,371		6,500,000
Issuance of common stock in connection with equity offering	$ 257,986			$ 1				257,985
Exercise of warrants (in shares)					15,870,411
Exercise of warrants	158,705				$ 3		(58,126)	0		0	216,828
Distributions to Symbotic Holdings LLC partners	(48,100)										(48,100)
Stock-based compensation	86,977							14,528			72,449
Other comprehensive loss	(5,783)								(945)		(4,838)
Ending balance (in shares) at Jun. 29, 2024				103,096,119	77,490,386	404,309,196
Ending balance at Jun. 29, 2024	346,792			$ 12	$ 8	$ 41	0	1,525,869	(2,632)	(1,326,761)	150,255
Beginning balance (in shares) at Mar. 30, 2024				101,195,288	78,432,388	404,334,196
Beginning balance at Mar. 30, 2024	393,643			$ 12	$ 8	$ 40		1,521,489	(2,373)	(1,322,080)	196,547
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(26,724)							0		(4,681)	(22,043)
Issuance of common stock under stock plans, net of shares withheld for employee taxes (in shares)				933,829
Exchange of Class V-1 and V-3 common stock (in shares)				967,002	(942,002)	(25,000)
Exchange of Class V-1 and V-3 common stock	$ 1					$ 1		(910)			910
Issuance of common stock in connection with equity offering (in shares)	933,829	933,829
Distributions to Symbotic Holdings LLC partners	$ (48,100)										(48,100)
Stock-based compensation	29,451							5,290			24,161
Other comprehensive loss	(1,479)								(259)		(1,220)
Ending balance (in shares) at Jun. 29, 2024				103,096,119	77,490,386	404,309,196
Ending balance at Jun. 29, 2024	$ 346,792			$ 12	$ 8	$ 41	$ 0	$ 1,525,869	$ (2,632)	$ (1,326,761)	$ 150,255