v3.26.3
Related Parties and Related Commitments and Contingencies - Additional Information (Details)
3 Months Ended 12 Months Ended
Sep. 29, 2024
USD ($)
Sep. 28, 2024
USD ($)
installment
Oct. 02, 2026
USD ($)
Oct. 03, 2025
USD ($)
Jul. 03, 2026
USD ($)
Jan. 29, 2026
USD ($)
Feb. 21, 2025
USD ($)
Related Party Transaction [Line Items]              
Indemnification liability     $ 0        
Proceeds from dispositions of business     34,000,000 $ 25,000,000      
Loss on business divestiture     0 (10,000,000)      
Tax indemnification liability     $ 132,000,000   $ 128,000,000    
Accounts Receivable | Customer Concentration Risk | Unis Venture              
Related Party Transaction [Line Items]              
Concentration risk, percentage         1.00%    
SanDisk Semiconductor (Shanghai) Co. Ltd.              
Related Party Transaction [Line Items]              
Commitment term 5 years            
Purchase commitment amount $ 550,000,000            
Renewal term     1 year        
SanDisk Semiconductor (Shanghai) Co. Ltd. | Certain Flash-Based Products              
Related Party Transaction [Line Items]              
Commitment purchases     $ 141,000,000 $ 139,000,000      
Accounts payable     157,000,000   $ 143,000,000    
Disposed of by sale | SanDisk Semiconductor (Shanghai) Co. Ltd.              
Related Party Transaction [Line Items]              
Ownership percentage sold   80.00%          
Disposal consideration   $ 659,000,000          
Proceeds from dispositions of business     536,000,000        
Number of installments | installment   3          
Installment payment   $ 37,000,000 27,000,000        
Loss on business divestiture     (10,000,000)        
Consideration receivable     103,000,000   139,000,000    
Present value discount     $ 10,000,000        
Term of effective interest method     3 years        
Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent | Disposed of by sale | SanDisk Semiconductor (Shanghai) Co. Ltd.              
Related Party Transaction [Line Items]              
Consideration receivable     $ 37,000,000   37,000,000    
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent | Disposed of by sale | SanDisk Semiconductor (Shanghai) Co. Ltd.              
Related Party Transaction [Line Items]              
Consideration receivable     $ 66,000,000   102,000,000    
Flash Ventures              
Related Party Transaction [Line Items]              
Ownership percentage     49.90%        
SanDisk Semiconductor (Shanghai) Co. Ltd.              
Related Party Transaction [Line Items]              
Ownership percentage   20.00%          
Equity investment     $ 168,000,000        
Unis Venture              
Related Party Transaction [Line Items]              
Ownership percentage     48.00%        
Refund liability     $ 20,000,000        
Unis Venture | Revenue from Contract with Customer | Product Concentration Risk              
Related Party Transaction [Line Items]              
Concentration risk, percentage     0.40% 1.30%      
Unis Venture | Unissoft (Wuxi) Group Co Ltd.              
Related Party Transaction [Line Items]              
Ownership percentage     52.00%        
Related Party              
Related Party Transaction [Line Items]              
Accounts payable     $ 549,000,000   460,000,000    
Investment funding commitments, percentage     50.00%        
Tax indemnification liability             $ 112,000,000
Related Party | Research And Development Commitments              
Related Party Transaction [Line Items]              
Related party transaction     $ 88,000,000        
Related Party | Reimbursement of Short-Term Employee Incentives              
Related Party Transaction [Line Items]              
Related party transaction     $ 0 $ 22,000,000      
Related Party | Extension Agreements              
Related Party Transaction [Line Items]              
Other commitment           $ 1,200,000,000  
Related Party | Maximum              
Related Party Transaction [Line Items]              
Investment funding commitments, percentage     50.00%        
Related Party | Flash Ventures | Future Building Depreciation Payments              
Related Party Transaction [Line Items]              
Other commitment     $ 459,000,000        
Exchange rate     157.56        
To be paid remainder of fiscal year     $ 104,000,000        
To be paid year one     253,000,000        
To be paid year two     71,000,000        
To be paid year three     31,000,000        
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments              
Related Party Transaction [Line Items]              
Other commitment     835,000,000        
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | Balance Sheet Location [Axis]: us-gaap:OtherAssetsCurrent              
Related Party Transaction [Line Items]              
Other commitment     137,000,000        
Related Party | K1, K2, And Y7 Facilities | Future Building Depreciation Payments | Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent              
Related Party Transaction [Line Items]              
Other commitment     698,000,000        
Flash Ventures | Related Party              
Related Party Transaction [Line Items]              
Payments for equity method investments     941,000,000 $ 900,000,000      
Accounts payable     $ 392,000,000   $ 318,000,000