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Income Tax Expense (Benefit) Additional Information (Details Textuals) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jun. 29, 2018 | Mar. 30, 2018 | Dec. 29, 2017 | Mar. 30, 2018 | Mar. 31, 2017
Income Tax Disclosure [Line Items] |  |  |  |  |
U.S. federal statutory income tax rate, percent |  |  | 35.00% | 28.00% |
Tax cuts and jobs act of 2017, provisional income tax expense amount |  |  |  | $ 1,660 |
Tax cuts and jobs Act of 2017, change in tax rate, income tax expense (benefit) provisional amount |  | $ 9 |  | $ (79) |
Deferred tax assets, projected effective rate at which position will reverse |  | 29.00% |  | 29.00% |
Deferred tax liabilities, projected effective rate at which position will reverse |  | 22.00% |  | 22.00% |
Tax cuts and jobs act of 2017, transition tax for accumulated foreign earnings, liability, incomplete accounting, provisional amount |  |  |  | $ 1,660 |
Tax cuts and jobs act of 2017, transition tax for accumulated foreign earnings, liability, current, incomplete accounting, provisional amount |  | $ 132 |  | 132 |
Excess tax benefit from share-based compensation, operating activities |  | 46 |  | 73 |
Deferred tax assets, valuation allowance |  |  |  |  | $ 111
Extinguishment of debt, amount |  |  |  |  | (98)
Unrecognized tax benefits, period increase (decrease) |  |  |  | (17) |
Unrecognized tax benefits |  | 505 |  | 505 |
Income tax penalties and interest accrued |  | $ 105 |  | 105 |
Scenario, Forecast |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
U.S. federal statutory income tax rate, percent | 21.00% |  |  |  |
SanDisk |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deduction, premiums And issuance costs from debt financing transactions |  |  |  |  | $ 91
Internal Revenue Service (IRS) |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Current federal tax expense (benefit) |  |  |  | 795 |
Make Whole Premiums |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deduction, premiums And issuance costs from debt financing transactions |  |  |  | $ (211) |

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=96864182&loc=d3e11374-113907 + Details
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