| **ACQUISITIONS, DIVESTITURES AND ASSET SALES - Sale Price and Net Cash Proceeds of Completed Divestitures (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations $ in Millions** | 12 Months Ended |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | $ 1,783         |
| Net Cash Proceeds                                                                                                                                                                                      | 1,727           |
| Narda-MITEQ business                                                                                                                                                                                   |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 75              |
| Net Cash Proceeds                                                                                                                                                                                      | 76              |
| ESSCO business                                                                                                                                                                                         |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 55              |
| Net Cash Proceeds                                                                                                                                                                                      | 53              |
| Electron Devices business                                                                                                                                                                              |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 185             |
| Net Cash Proceeds                                                                                                                                                                                      | 173             |
| VSE disposal group                                                                                                                                                                                     |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 20              |
| Net Cash Proceeds                                                                                                                                                                                      | 19              |
| CPS business                                                                                                                                                                                           |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 398             |
| Net Cash Proceeds                                                                                                                                                                                      | 347             |
| Military training business                                                                                                                                                                             |            |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                      |            |
| Cash price on sale of business                                                                                                                                                                         | 1,050           |
| Net Cash Proceeds                                                                                                                                                                                      | $ 1,059         |

| X                                                                                                                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.
+ References
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-12
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| X                                                                                                                                                                                                    |
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