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Restructuring and Other Exit Costs (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 29, 2018 | Mar. 29, 2019
Restructuring Cost and Reserve [Line Items] |  |
Restructuring reserve | $ 27 | $ 16
Remaining lease term of exited facilities |  | 5 years
Exelis | Engineering, selling and administrative expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Charges for integration and other costs | $ 5 |

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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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