| **INTEREST EXPENSE**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| **Interest Expense [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| INTEREST EXPENSE                | INTEREST EXPENSETotal interest expense was $172 million, $183 million and $130 million in fiscal 2017, 2016 and 2015, respectively. Fiscal 2015 interest expense included $18 million of debt issuance costs related to financing commitments for a senior unsecured bridge loan facility established (and subsequently terminated when we secured permanent financing) in connection with our acquisition of Exelis. Interest paid was $168 million, $177 million and $89 million in fiscal 2017, 2016 and 2015, respectively. |

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Interest Expense Borrowings.
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No definition available.
+ Details**Name:**us-gaap_InterestExpenseAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |