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Other Income (Expense), Net and Gain on Sale of Product Lines (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2020 | Oct. 02, 2020 | Jul. 03, 2020 | Sep. 27, 2019 | Oct. 02, 2020 | Sep. 27, 2019 | Dec. 31, 2019
Other Income and Expenses [Abstract] |  |  |  |  |  |  |
Other nonoperating income, net pension and postretirement benefits |  | $ 3.0 |  | $ 4.0 | $ 14.0 | $ 14.0 |
Unrealized gain (loss) on investments |  | 3.0 |  |  | (10.0) |  |
Disposal group, product lines, revenues |  |  |  |  |  |  | $ 170.0
Proceeds from sale of product lines | $ 826.0 |  |  |  | 825.9 | 0.0 |
Pretax gain on sale of product lines |  | $ 0.0 | $ 455.0 | $ 0.0 | $ 454.6 | $ 0.0 |
Gain on sale of product lines, net of tax |  |  | $ 305.0 |  |  |  |
Gain on sale of product lines, net of tax, per diluted common share |  |  | $ 0.42 |  |  |  |

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- Definition Gain on Sale of Product Lines, Net of Tax + References No definition available. + Details
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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=109226348&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=121586364&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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