Common Stock, Stock Option Plans and Stock Compensation Agreements - Narrative (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Jan. 01, 2023 USD ($) StockBasedCompensationPlans $ / shares shares	Jan. 02, 2022 USD ($) $ / shares shares	Jan. 03, 2021 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans \| StockBasedCompensationPlans	1
Compensation cost charged for Long term incentive plan \| $	$ 1,138	$ 1,135	$ 1,005
Total income tax benefit recognized \| $	196	218	210
Exercise of options, tax benefit \| $	282	223	248
Total compensation cost not yet recognized for option \| $	$ 939	$ 862	$ 804
Weighted average period for total compensation cost not yet recognized	1 year 9 months 18 days	1 year 9 months 10 days	1 year 9 months 3 days
Average fair value of option granted (in dollars per share) \| $ / shares	$ 23.23	$ 20.86	$ 16.42
Total intrinsic value of options exercised \| $	$ 1,228	$ 919	$ 1,021
Stock options outstanding (in shares) \| shares	118,672	117,361	114,250
Stock option average life	5 years 9 months 18 days	5 years 9 months 18 days	6 years
Stock options exercisable \| shares		62,742	61,289
Stock options average price \| $ / shares		$ 104.42	$ 96.97
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options expiration period	10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average fair value of RSU's and PSU's granted \| $ / shares	$ 153.67	$ 152.62	$ 139.58
Fair Value of RSU or PSU units settled \| $	$ 591	$ 611	$ 650
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Average fair value of RSU's and PSU's granted \| $ / shares	$ 170.46	$ 179.35	$ 160.54
Fair Value of RSU or PSU units settled \| $	$ 94	$ 83	$ 91
Minimum \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	6 months
Minimum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	6 months
Minimum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Maximum \| Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Maximum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Maximum \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
2022 Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under long-term incentive plan \| shares	150,000
Shares available for future grants under long-term incentive plan \| shares	150,000
Shares issued subject to stock options or stock appreciation rights (in shares) \| shares	110,000
Shares subject to full value awards (in shares) \| shares	40,000
Shares subject to full value award, excess (in shares) \| shares	40,000

Number of stock-based compensation plans.

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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, May Be Issued Subject To Full Value Awards

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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, May Be Issued Subject To Stock Options Or Stock Appreciation Rights

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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