Fair Value Measurements - Summary of Activity Related to Equity Investments (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 27, 2020	Dec. 29, 2019
Other Investment Not Readily Marketable [Line Items]
Business Combination, Contingent Consideration, Liability	$ 636	$ 1,715
Equity Investment [Roll Forward]
Non Current Other Assets	6,131	$ 5,695
Equity Securities \| Equity Investments with readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	1,148
Changes in Fair Value Reflected in Net Income	161
Sales/ Purchases/Other	(169)
Carrying value, end of period	1,140
Non Current Other Assets	1,140
Equity Securities \| Equity Investments without readily determinable value
Equity Investment [Roll Forward]
Carrying value, beginning of period	712
Changes in Fair Value Reflected in Net Income	(36)
Sales/ Purchases/Other	66
Carrying value, end of period	742
Non Current Other Assets	$ 742

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Equity Investments, Increase (Decrease) from Acquisition (Sale) During Period

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of addition (reduction) to the amount at which an instrument classified in shareholders' equity could be incurred (settled) in a current transaction between willing parties.

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Amount of investment in equity security without readily determinable fair value.

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Amount of investment in marketable security, classified as noncurrent.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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