| **Goodwill (Tables)**                                    | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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| **Goodwill and Intangible Assets Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Schedule of Goodwill by Business Segments                | Goodwill by business segment, and changes in the carrying amount of goodwill for the two quarters ended December 30, 2016 by business segment, were as follows: CommunicationSystems Space andIntelligenceSystems ElectronicSystems CriticalNetworks (1) Total           (In millions)Balance at July 1, 2016 — As reported$781 $1,478 $1,650 $2,066 $5,975Decrease from reclassification to assets of discontinued operations (1)— — — (136) (136)Balance at July 1, 2016 — After reclassification$781 $1,478 $1,650 $1,930 $5,839Currency translation adjustments1 (5) (3) (5) (12)Other2 2 4 13 21Balance at December 30, 2016$784 $1,475 $1,651 $1,938 $5,848 (1) In the second quarter of fiscal 2017, we entered into a definitive agreement to sell CapRock, which was formerly part of our Critical Networks segment and is reported as discontinued operations in this Report. As a result, our goodwill balance as of July 1, 2016 has been adjusted by $136 million in order to include CapRock goodwill within our separate presentation of assets and liabilities of discontinued operations in our Condensed Consolidated Balance Sheet (Unaudited) in accordance with GAAP. The carrying amount of CapRock goodwill is included as a component of the “Current assets of discontinued operations” or “Non-current assets of discontinued operations” lines in our Condensed Consolidated Balance Sheet (Unaudited). See Note B — Discontinued Operations in these Notes for additional information. |

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No definition available.
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| - Definition
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267
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