| **Discontinued Operations**                                | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
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| **Discontinued Operations and Disposal Groups [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| DISCONTINUED OPERATIONS AND DIVESTITURES                   | DISCONTINUED OPERATIONS AND DIVESTITURESDiscontinued OperationsPursuant to a plan approved by our Board of Directors we completed the sale of the remaining assets of our cyber integrated solutions operation (“CIS”) on August 27, 2013 for $35 million, including $28 million in cash and a $7 million subordinated promissory note, which we collected in the first quarter of fiscal 2015.On February 4, 2013, we completed the sale of Broadcast Communications to an affiliate of The Gores Group, LLC (“the Buyer”) for $225 million, including $160 million in cash, subject to customary adjustments (including a post-closing working capital adjustment), a $15 million subordinated promissory note (which was collected in fiscal 2014) and an earnout of up to $50 million based on future performance. Broadcast Communications was recorded as discontinued operations in connection with the sale.  Based on a dispute between us and the Buyer over the amount of the post-closing working capital adjustment, we and the Buyer previously appointed a nationally recognized accounting firm to render a final determination of such dispute. On January 29, 2016, the accounting firm rendered its final determination as to the disputed items, in which it concluded substantially in our favor and partly in the Buyer’s favor. As a result of such determination and related third-party costs, we recorded a loss in discontinued operations in fiscal 2016 of $24 million ($21 million after-tax or $0.16 per diluted share) and adjusted current liabilities of discontinued operations to $30 million. We did not restate our historical financial results of operations to account for Broadcast Communications as discontinued operations for fiscal 2015 as presented in this Report because the amounts were not material. Unless otherwise specified, disclosures in these Notes, other than this Note 3: Discontinued Operations and Divestitures, relate solely to our continuing operations.We did not record any amounts in discontinued operations in fiscal 2015.Discontinued operations in fiscal 2014 consisted of an $18 million ($7 million after-tax) increase in the loss on sale of Broadcast Communications from miscellaneous adjustments for contingencies related to the disposition, and a $3 million ($2 million after-tax) gain on sale of the remaining assets of CIS. DivestituresOn April 8, 2016, we completed the divestiture of Aerostructures for $187 million in cash at closing and the assumption of a $23 million capitalized lease. We continued to report the results of Aerostructures through the date of divestiture as part of our Electronic Systems segment. We recognized a net gain of $10 million on the sale which is included in the “Non-operating income (loss)” line item in our Consolidated Statement of Income. Aerostructures was not strategic to our business and was part of our company as a result of our acquisition of Exelis in May 2015. Summarized financial information for Aerostructures is as follows: 2016 2015 (In millions)Revenue from product sales and services$60 $8Income before income taxes5 —Net gain on sale of business10 —    Receivables$— $7Inventories— 36Property, plant and equipment— 65Goodwill— 57Intangible assets— 25Other assets— 3Total assets— 193Accounts payable— 7Other liabilities— 5Net assets$— $181 |

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| - Definition
The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.
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