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Business Segments - Assets by Segment (Details) - USD ($) $ in Millions | Mar. 30, 2018 | Jun. 30, 2017
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 10,070 | $ 10,090
Identifiable intangible assets | 1,019 | 1,104
Operating Segments | Communication Systems |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,592 | 1,534
Operating Segments | Electronic Systems |  |
Segment Reporting Information [Line Items] |  |
Assets | 4,177 | 4,094
Operating Segments | Space and Intelligence Systems |  |
Segment Reporting Information [Line Items] |  |
Assets | 2,190 | 2,117
Corporate |  |
Segment Reporting Information [Line Items] |  |
Assets | 2,111 | 2,345
Corporate | Exelis |  |
Segment Reporting Information [Line Items] |  |
Identifiable intangible assets | $ 1,000 | $ 1,000

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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