Income Taxes - Reconciliation from Federal Statutory Tax Rate to Effective Tax Rate (Details)		6 Months Ended	12 Months Ended
Jan. 01, 2018	Dec. 31, 2017	Jun. 24, 2018	Jun. 25, 2017	Jun. 26, 2016
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Federal statutory tax rate	21.00%	35.00%	28.30%	35.00%	35.00%
Foreign income taxed at different rates			(2.40%)	(10.20%)	(7.70%)
Repatriation of foreign earnings and withholding taxes			1.80%	1.40%	(1.00%)
Repatriation of foreign earnings due to tax reform			23.90%
Revaluation of U.S. deferred balances due to tax reform			(14.20%)
Change in valuation allowance			(12.90%)	(0.50%)	(3.70%)
Foreign tax credits			(11.00%)
Domestic production activities deduction			0.50%	2.00%	(0.50%)
Research and other credits			(1.80%)	(5.10%)	4.80%
State income taxes, net of federal tax benefit			(3.90%)	0.20%	1.50%
Change in uncertain tax positions			(15.10%)	1.80%	1.20%
Nondeductible compensation			1.60%
Nondeductible expenses and other			0.30%	0.60%	1.60%
Effective tax rate			(4.90%)	25.20%	31.20%

Effective income tax rate reconciliation deductions qualified production activities net of reversal.

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Effective income tax rate reconciliation, nondeductible expense and other reconciling items percent.

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Effective income tax rate reconciliation repatriation of foreign earnings and (withholding) taxes.

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Effective income tax rate reconciliation repatriation of foreign earnings due to tax reform.

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Effective income tax rate reconciliation revaluation of domestic deferred balances due to tax reform.

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Effective income tax rate reconciliation tax credits net of reversal.

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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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Percentage 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 changes in the valuation allowance for deferred tax assets.

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Percentage 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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage 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 income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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