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Income Taxes - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 28, 2019	Sep. 28, 2019	Sep. 29, 2018
Income Tax Disclosure [Abstract]
Research and development tax credits		$ 28,600,000	$ 0
Gain from deconsolidation of GACC	$ 4,000,000.0	4,000,000
Gain related to gaining control of an affiliate			10,000,000.0
Tax expense on gain		$ 0	$ 0
U.S. federal statutory income tax rate		21.00%	21.00%

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- Definition

Tax Expense On Remeasurement Gain

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No definition available.

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- Definition

In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.

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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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