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Pension Benefits Plan Assets (Details) - Global plans - Pension - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 5,211 |  | $ 5,170 |  | $ 4,677
Net Asset Value Excluded From Fair Value By Input |  | 2,791 | [1] | 2,615 | [2] |
Expected contribution by Company |  | 6 |  |  |  |
Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 360 |  | 368 |  |
Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 1,780 |  | 2,187 |  |
Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 280 |  | 0 |  |
Cash and Cash Equivalents |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 42 |  | 14 |  |
Net Asset Value Excluded From Fair Value By Input |  | 3 | [1] | 0 | [2] |
Cash and Cash Equivalents | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 35 |  | 14 |  |
Cash and Cash Equivalents | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 4 |  | 0 |  |
Cash and Cash Equivalents | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Corporate stock, common |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 325 |  | 354 |  |
Net Asset Value Excluded From Fair Value By Input |  | 0 | [1] | 0 | [2] |
Corporate stock, common | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 325 |  | 354 |  |
Corporate stock, common | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Corporate stock, common | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 0 |  | $ 0 |  |
Domestic Corporate Common Stock |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Percentage of consolidated plan assets represented by investment in Company comon stock |  | 1.10% |  | 1.20% |  |
Mutual Fund International Equity |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 2 |  | $ 36 |  |
Net Asset Value Excluded From Fair Value By Input |  | 2 | [1] | 36 | [2] |
Mutual Fund International Equity | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Mutual Fund International Equity | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Mutual Fund International Equity | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Mutual Funds Domestic Debt |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 5 |  | 4 |  |
Net Asset Value Excluded From Fair Value By Input |  | 0 | [1] | 0 | [2] |
Mutual Funds Domestic Debt | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Mutual Funds Domestic Debt | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 5 |  | 4 |  |
Mutual Funds Domestic Debt | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Collective Trusts Domestic Equity |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 1,508 |  | 1,431 |  |
Net Asset Value Excluded From Fair Value By Input |  | 1,508 | [1] | 1,314 | [2] |
Collective Trusts Domestic Equity | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Collective Trusts Domestic Equity | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 117 |  |
Collective Trusts Domestic Equity | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Collective Trusts Other International Debt |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 963 |  | 1,096 |  |
Net Asset Value Excluded From Fair Value By Input |  | 415 | [1] | 378 | [2] |
Collective Trusts Other International Debt | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Collective Trusts Other International Debt | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 548 |  | 718 |  |
Collective Trusts Other International Debt | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Limited Partnership |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 292 |  | 228 |  |
Net Asset Value Excluded From Fair Value By Input |  | 292 | [1] | 228 | [2] |
Limited Partnership | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Limited Partnership | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Limited Partnership | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, corporate |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 361 |  | 654 |  |
Net Asset Value Excluded From Fair Value By Input |  | 141 | [1] | 211 | [2] |
Bonds, corporate | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, corporate | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 220 |  | 443 |  |
Bonds, corporate | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, government |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 861 |  | 774 |  |
Net Asset Value Excluded From Fair Value By Input |  | 0 | [1] | 0 | [2] |
Bonds, government | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, government | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 861 |  | 774 |  |
Bonds, government | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, other |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 64 |  | 70 |  |
Net Asset Value Excluded From Fair Value By Input |  | 0 | [1] | 0 | [2] |
Bonds, other | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Bonds, other | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 64 |  | 70 |  |
Bonds, other | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Real estate |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 421 |  | 412 |  |
Net Asset Value Excluded From Fair Value By Input |  | 421 | [1] | 412 | [2] |
Real estate | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Real estate | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Real estate | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Other [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 87 |  | 97 |  |
Net Asset Value Excluded From Fair Value By Input |  | 9 | [1] | 36 | [2] |
Other [Member] | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  | 0 |  |
Other [Member] | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 78 |  | 61 |  |
Other [Member] | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 0 |  | 0 |  |
Debt Securities |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Weighted-average target asset allocation |  | 29.00% |  |  |  |
Equity Securities |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Weighted-average target asset allocation |  | 34.00% |  |  |  |
Real Estate And Other |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Weighted-average target asset allocation |  | 37.00% |  |  |  |
Buy-in annuity contract |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 280 |  |  |  |
Net Asset Value Excluded From Fair Value By Input | [1] | 0 |  |  |  |
Buy-in annuity contract | Level 1 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  |  |  |
Buy-in annuity contract | Level 2 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | 0 |  |  |  |
Buy-in annuity contract | Level 3 [Member] |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |
Fair Value of Plan Assets |  | $ 280 |  | $ 0 |  |
[1] | Certain assets that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.
[2] | Certain assets that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.

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