| **Inventories (Tables)**            | 6 Months Ended                                                                                                                                                                                                                                                                                                                      |
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| **Inventory Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                |
| Inventories                         | Inventories are summarized below:  December 30, 2016 July 1, 2016     (In millions)Unbilled costs and accrued earnings on fixed-price contracts$566 $511Finished products108 128Work in process129 119Raw materials and supplies198 192 $1,001 $950 |

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| - References
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| - Definition
Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.
+ References
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