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Accounting Policies (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 28, 2020 | Jan. 02, 2021 | Dec. 28, 2019 | Dec. 30, 2018
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Assets |  | $ 17,996 | $ 17,564 |
Income tax examination percentage likelihood of being realized upon settlement |  | 50.00% |  |
Maximum length of time, forward contracts and options |  | 18 months |  |
Maximum length of time hedged in price risk cash flow hedge |  | 18 months |  |
Payables Placed On Tracking System |  | $ 909 | 812 |
Payables Financed By Participating Suppliers |  | 670 | 605 |
Reclassification of tax effects relating to U.S. Tax Reform |  |  | 0 |
Operating lease, right-of-use assets |  | 658 | 541 |
Operating lease, liability |  | $ 637 |  |
Minimum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Expected rates of return |  | 25th |  |
Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Expected rates of return |  | 75th |  |
Machinery and Equipment [Member] | Minimum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 15 years |  |
Machinery and Equipment [Member] | Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 30 years |  |
Office Equipment [Member] | Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 5 years |  |
Computer Equipment and Capitalized Software [Member] | Minimum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 3 years |  |
Computer Equipment and Capitalized Software [Member] | Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 7 years |  |
Building [Member] | Minimum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 10 years |  |
Building [Member] | Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 50 years |  |
Building Components [Member] | Maximum |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Property, Plant and Equipment, Useful Life |  | 20 years |  |
Leases ASU |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Operating lease, right-of-use assets |  |  |  | $ 453
Operating lease, liability |  |  |  | $ 461
AOCI |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Reclassification of tax effects relating to U.S. Tax Reform | $ (22) |  | (22) |
Retained earnings |  |  |  |
Accounting Policies and New Accounting Standards [Line Items] |  |  |  |
Reclassification of tax effects relating to U.S. Tax Reform | $ 22 |  | $ 22 |

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