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Related Parties and Related Commitments and Contingencies - Additional Information (Details) $ in Millions | 12 Months Ended
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Jul. 03, 2020 USD ($) legalEntity | Jun. 28, 2019 USD ($) | Jun. 29, 2018 USD ($)
Related Party Transactions [Abstract] |  |  |
Number of legal entities | legalEntity | 3 |  |
Accounts payable to related parties | $ 407 | $ 331 |
Undistributed earnings | $ 24 | $ 14 |
Investment funding commitments | 50.00% |  |
Percent of total manufacturing capacity in operation |  | 100.00% |
Costs incurred associated with reduction in utilization |  | $ 264 |
Costs incurred with unexpected power outage incident | $ 68 | 145 |
Western Digital Corp | Minimum |  |  |
Related Party Transactions [Abstract] |  |  |
Investment funding commitments | 49.90% |  |
Western Digital Corp | Maximum |  |  |
Related Party Transactions [Abstract] |  |  |
Investment funding commitments | 50.00% |  |
Equity Method Investee |  |  |
Related Party Transactions [Abstract] |  |  |
Payments for equity method investments | $ 3,090 | 4,130 | $ 3,790
Accounts payable to related parties | $ 407 | $ 331 |
Flash Ventures |  |  |
Related Party Transactions [Abstract] |  |  |
Equity method investment, ownership percentage | 49.90% |  |
Remaining committed prepayments | $ 206 |  |
Unis Venture |  |  |
Related Party Transactions [Abstract] |  |  |
Equity method investment, ownership percentage | 49.00% |  |
Kioxia |  |  |
Related Party Transactions [Abstract] |  |  |
Equity method investment, ownership percentage | 49.90% |  |
Unissoft (Wuxi) Group Co Ltd. | Unis Venture |  |  |
Related Party Transactions [Abstract] |  |  |
Partner's ownership in venture business | 51.00% |  |
Kioxia | Flash Ventures |  |  |
Related Party Transactions [Abstract] |  |  |
Equity method investment, ownership percentage | 50.10% |  |
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 | 2.00% | 2.00% |
Accounts Receivable Benchmark | Unis Venture | Product Concentration Risk |  |  |
Related Party Transactions [Abstract] |  |  |
Concentration risk, percentage |  | 5.00% |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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