v3.26.1
Summary of Significant Accounting Policies - Schedule of Change in Cash Flow Statement (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Cash flows from operating activities:        
Net loss $ 55,000 $ (21,174) $ 77,787 $ (47,884) [1]
Adjustments to reconcile net loss to net cash provided by operating activities:        
Depreciation and amortization     30,277 30,954 [1]
Amortization of leases     956 3,172 [1]
Loss from equity method investment $ 9,631 3,776 22,375 7,831 [1]
Foreign currency losses (gains)     58 (73) [1]
Loss on disposal of assets     76 201 [1]
Provision for excess and obsolete inventory     13,826 4,901 [1]
Stock-based compensation     142,919 92,322 [1]
Gain from strategic investment fair value adjustment     (21,039) (4,481) [1]
Changes in operating assets and liabilities:        
Accounts receivable     (101,331) 65,570 [1]
Inventories     (71,145) (30,187) [1]
Prepaid expenses and other current assets     (265,836) 52,779 [1]
Deferred expenses     (38,532) 23,582 [1]
Other assets     35,632 (61,928) [1]
Accounts payable     51,245 40,544 [1]
Accrued expenses and other current liabilities     63,672 (7,613) [1]
Deferred revenue     368,777 117,288 [1]
Other liabilities     (4,133) (8,888) [1]
Net cash provided by operating activities     $ 305,584 278,090 [1]
As Computed Under Accelerated Attribution Method        
Cash flows from operating activities:        
Net loss   (31,925)   (71,883)
Adjustments to reconcile net loss to net cash provided by operating activities:        
Depreciation and amortization       30,954
Amortization of leases       3,172
Loss from equity method investment       7,831
Foreign currency losses (gains)       (73)
Loss on disposal of assets       201
Provision for excess and obsolete inventory       4,901
Stock-based compensation       119,568
Gain from strategic investment fair value adjustment       (4,481)
Changes in operating assets and liabilities:        
Accounts receivable       65,570
Inventories       (30,187)
Deferred expenses       23,582
Other assets       (16,928)
Accounts payable       40,544
Accrued expenses and other current liabilities       (7,613)
Deferred revenue       117,288
Other liabilities       (8,888)
Net cash provided by operating activities       336,259
As Computed Under Accelerated Attribution Method | Change In Presentation        
Changes in operating assets and liabilities:        
Prepaid expenses and other current assets       62,701
Effect of Change        
Cash flows from operating activities:        
Net loss   $ 10,751   23,999
Adjustments to reconcile net loss to net cash provided by operating activities:        
Depreciation and amortization       0
Amortization of leases       0
Loss from equity method investment       0
Foreign currency losses (gains)       0
Loss on disposal of assets       0
Provision for excess and obsolete inventory       0
Stock-based compensation       (27,246)
Gain from strategic investment fair value adjustment       0
Changes in operating assets and liabilities:        
Accounts receivable       0
Inventories       0
Prepaid expenses and other current assets       (9,922)
Deferred expenses       0
Other assets       (45,000)
Accounts payable       0
Accrued expenses and other current liabilities       0
Deferred revenue       0
Other liabilities       0
Net cash provided by operating activities       $ (58,169)
[1] Refer to Note 2 for a description of the revision related to the statement of cash flows for the nine months ended June 28, 2025.