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Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions | Jun. 30, 2018 | Jun. 24, 2017
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Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount |  | $ 25.7
Retained Earnings [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount |  | 24.7
Additional Paid-in Capital [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount |  | $ 1.0
ASU for Compensation-Stock Compensation [Member] | Retained Earnings [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount | $ 24.7 |
ASU for Compensation-Stock Compensation [Member] | Additional Paid-in Capital [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount | 1.0 |
Deferred Tax Assets for Research Credit and Alternative Minimum Tax Credit Carryforwards [Member] | ASU for Compensation-Stock Compensation [Member] |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Net cumulative effect, change in amount | $ 25.7 |

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