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Income taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 27, 2015	Sep. 28, 2014
Income Taxes [Line Items]
Income tax (benefit) expense	$ 19,628	$ 21,569
Effective income tax rate	6.40%
U.S. federal statutory tax rate	35.00%
Discrete tax benefit	$ 21,900

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- Definition

Income Taxes [Line Items]

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in income tax contingencies. Including, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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