Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jul. 04, 2021	Jan. 03, 2021
Derivative [Line Items]
Accumulated other comprehensive income on derivatives, after tax	$ 187
Reclassification of foreign exchange contracts into earnings, period	next 12 months
Maximum length of time for hedge exposure	18 months
Weighted average interest rate on non-current debt	2.98%
Excess of the estimated fair value over the carrying value of debt		$ 5,400
Current Debt	$ 3,173	2,631
Commercial Paper
Derivative [Line Items]
Current Debt	$ 600
Weighted average interest rate	0.05%
Term	2 months
Forward foreign exchange contracts
Derivative [Line Items]
Collateral already posted, aggregate fair value	$ 494
Derivative, notional amount	46,200	37,800
Cross currency interest rate swaps
Derivative [Line Items]
Derivative, notional amount	34,800	$ 30,600
Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount	2,000
Equity Securities
Derivative [Line Items]
Changes in Fair Value Reflected in Net Income	37
Equity Investments without readily determinable value \| Equity Securities
Derivative [Line Items]
Equity, fair value adjustment, impairment loss	(15)
Changes in Fair Value Reflected in Net Income	$ 22

Equity, Fair Value Adjustment, Impairment Loss

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Excess of fair value over carrying value of debt.

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Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average interest rate of debt outstanding.

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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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Nominal or face amount used to calculate payment on derivative.

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Description of the transactions or other events that will result in the reclassification into earnings of gains or losses reported in accumulated other comprehensive income. May include the time period over which gains or losses will be reclassified to earnings.

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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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Weighted average interest rate of long-term debt outstanding calculated at point in time.

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Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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