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Share-Based Compensation - Share-Based Compensation, Cash-Based Awards and Related Tax Benefit Recognized in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 26, 2021 | Jun. 27, 2020 | Jun. 29, 2019
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | $ 93.1 | $ 60.4 | $ 59.0
Income tax benefit on share-based compensation | 15.2 | 6.3 | 4.3
Phantom Stock Unit [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 27.0 | 11.1 |
Cost of Revenue [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 3.4 | 2.1 | 3.1
Cost of Revenue [Member] | Phantom Stock Unit [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 0.4 | 0.2 |
Research and Development [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 45.4 | 32.3 | 33.7
Research and Development [Member] | Phantom Stock Unit [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 21.9 | 9.1 |
Selling, General, and Administrative [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | 44.3 | 26.0 | $ 22.2
Selling, General, and Administrative [Member] | Phantom Stock Unit [Member] |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |
Total | $ 4.7 | $ 1.8 |

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