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Related Parties and Related Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2019
Apr. 03, 2020
Oct. 04, 2019
Mar. 29, 2019
Apr. 03, 2020
Mar. 29, 2019
Jun. 28, 2019
Related Party Transactions [Abstract]              
Accounts payable to related parties   $ 397     $ 397   $ 331
Investment funding commitments   50.00%     50.00%    
Costs incurred associated with reduction in utilization     $ 68        
Western Digital Corp | Minimum              
Related Party Transactions [Abstract]              
Investment funding commitments   49.90%     49.90%    
Western Digital Corp | Maximum              
Related Party Transactions [Abstract]              
Investment funding commitments   50.00%     50.00%    
Equity Method Investee              
Related Party Transactions [Abstract]              
Payments for equity method investments   $ 842   $ 1,040 $ 2,360 $ 2,900  
Accounts payable to related parties   397     397   $ 331
Flash Ventures              
Related Party Transactions [Abstract]              
Remaining committed prepayments   $ 205     $ 205    
Unis Venture              
Related Party Transactions [Abstract]              
Equity method investment, ownership percentage   49.00%     49.00%    
Unissoft (Wuxi) Group Co Ltd. | Unis Venture              
Related Party Transactions [Abstract]              
Partner's ownership in venture business   51.00%     51.00%    
Prepayments of Future Depreciation | Flash Ventures              
Related Party Transactions [Abstract]              
Other commitment $ 360            
Other commitment, period 3 years            
Revenue from Contract with Customer | Unis Venture | Product Concentration Risk              
Related Party Transactions [Abstract]              
Concentration risk, percentage   1.00%   1.00% 1.00% 1.00%