Common Stock, Stock Option Plans and Stock Compensation Agreements - Narrative (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
Jan. 02, 2022 USD ($) StockBasedCompensationPlans $ / shares shares	Jan. 03, 2021 USD ($) $ / shares shares	Dec. 29, 2019 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based compensation plans \| StockBasedCompensationPlans	2
Compensation cost charged for Long term incentive plan	$ 1,135	$ 1,005	$ 977
Total income tax benefit recognized	218	210	227
Exercise of options, tax benefit	223	248	209
Total compensation cost not yet recognized for option	$ 862	$ 804	$ 823
Weighted average period for total compensation cost not yet recognized	1 year 9 months 10 days	1 year 9 months 3 days	1 year 8 months 15 days
Average fair value of option granted (in dollars per share) \| $ / shares	$ 20.86	$ 16.42	$ 17.80
Total intrinsic value of options exercised	$ 919	$ 1,021	$ 807
Stock options outstanding (in shares) \| shares	117,361	114,250	111,637
Stock option average life	5 years 9 months 18 days	6 years	6 years
Stock options exercisable \| shares		61,289	60,761
Stock options average price \| $ / shares		$ 96.97	$ 88.88
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	$ 152.62	$ 139.58	$ 121.31
Fair Value of RSU or PSU units settled	$ 611	$ 650	$ 586
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	$ 179.35	$ 160.54	$ 124.67
Fair Value of RSU or PSU units settled	$ 83	$ 91	$ 119
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]
Award vesting period	6 months
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]
Award vesting period	3 years
Vesting percentage	200.00%
2012 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	650,000
Shares available for future grants under long-term incentive plan \| shares	240,000

Number of stock-based compensation plans.

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

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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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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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