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Income Taxes - Provision for Income Taxes Differs from Federal Statutory Rate (Detail) - USD ($) $ in Millions | 12 Months Ended
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Jun. 29, 2019 | Jun. 30, 2018 | Jun. 24, 2017
Income Tax Disclosure [Abstract] |  |  |
Provision at U.S. federal statutory tax rate | $ (4.4) | $ (22.9) | $ 21.5
Qualified stock options | 4.0 | 4.9 | 5.5
Shortfall related to share-based compensation | 3.3 | 4.1 |
Non-deductible officer compensation | 1.1 |  |
Business credits | (6.1) | (4.9) | (3.6)
Foreign tax differential | 1.0 | 16.5 | (13.2)
Non-deductible portion of contingent consideration |  |  | 0.9
Change in valuation allowance |  |  | (0.8)
Nondeductible amortization | 0.7 | 1.2 | 1.6
Taxes associated with one-time transition tax |  | 44.1 |
Impact of corporate tax rate change on deferred taxes |  | (2.7) |
Other differences | 0.7 | 0.2 | 0.3
Provision for income taxes | $ 0.3 | $ 40.5 | $ 12.2

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