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Other Income (Expense), Net (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2020 | Oct. 01, 2021 | Apr. 02, 2021 | Oct. 02, 2020 | Oct. 01, 2021 | Oct. 02, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Other Income and Expenses [Abstract] |  |  |  |  |  |  |  |
Proceeds from sale of product lines | $ 826 |  | $ 26 |  | $ 26 | $ 826 |  |
Pretax gain on sale of product lines | 455 | $ 0 | 13 | $ 0 | $ 13 | 455 |  |
Gain on sale of product lines, net of tax | $ 305 |  | $ 10 |  |  | $ 305 |  |
Disposal group, product lines, revenues |  |  |  |  |  |  | $ 88 | $ 170

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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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