| **Goodwill (Tables)**          | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| **Goodwill [Abstract]**        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Changes in the carrying amount | The assignment of goodwill by business segment, and changes in the carrying amount of goodwill for the fiscal years ended July 1, 2016 and July 3, 2015, by business segment, were as follows: Communication Systems Space and Intelligence Systems Electronic Systems Critical Networks Total           (In millions)Balance at June 27, 2014$439 $131 $85 $1,056 $1,711Goodwill acquired326 1,313 1,632 1,424 4,695Goodwill decrease from divestitures— — — (24) (24)Currency translation adjustments(5) 2 1 (32) (34)Balance at July 3, 2015760 1,446 1,718 2,424 6,348Impairment of goodwill— — — (290) (290)Goodwill decrease from divestitures (1)— — (61) — (61)Currency translation adjustments7 (1) (28) (40) (62)Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)14 33 21 (28) 40Balance at July 1, 2016$781 $1,478 $1,650 $2,066 $5,975 (1)  During the fourth quarter of fiscal 2016, we completed the divestiture of Aerostructures. In accordance with GAAP, we determined $61 million of goodwill to be a part of the carrying value of Aerostructures in determining the gain or loss on divestiture. See Note 3: Discontinued Operations and Divestitures for additional information. |

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| - Definition
Goodwill
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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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