Reorganization of Business - Reorganization of Businesses Accruals (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Restructuring Reserve [Roll Forward]
Adjustments	$ (3)	$ (1)	$ (13)	$ (11)
Employee separation costs
Restructuring Reserve [Roll Forward]
January 1, 2020			78
Additional Charges	16	$ 19	85	$ 48
Adjustments			(13)
Amount Used			(63)
September 26, 2020	$ 87		$ 87

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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