| **DIVESTITURES, ASSET SALES AND DISCONTINUED OPERATIONS - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions** |        |        |        |        |        | 6 Months Ended | 12 Months Ended |
|-------------------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|----------------|-----------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Proceeds from sales of businesses, net                                                                                                    |   |   |   |   |   | $ 343          |            | $ 0 | $ 0 | $ 1,014 |
| Gain (loss) on sale of discontinued operations, net                                                                                       |   |   |   |   |   | 12             |            | 0 | 0 | 0 |
| Proceeds from sale of asset group                                                                                                         |   |   |   |   |   | $ 20           |            | $ 0 | $ 0 | $ 0 |
| Discontinued operations (in dollars per share)                                                                                            |   |   |   |   |   | $ (0.01)       | $ (0.02)        | $ (0.03) | $ (0.02) | $ (0.68) |
| Harris Night Vision | Discontinued Operations, Disposed of by Sale                                                                        |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Income (loss) before income taxes                                                                                                         |   |   |   |   |   |           |            | $ 27 | $ 20 | $ 9 |
| Harris Night Vision | L3Harris | Discontinued Operations, Disposed of by Sale                                                             |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Cash price on sale of business                                                                                                            | $ 350  |   |   |   |   |           |            |   |   |   |
| Proceeds from sales of businesses, net                                                                                                    | 343    |   |   |   |   |           |            |   |   |   |
| Gain (loss) on sale of discontinued operations, net                                                                                       | $ 229  |   |   |   |   |           |            |   |   |   |
| Stormscope | Discontinued Operations, Disposed of by Sale                                                                                 |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Gain on sale of product line                                                                                                              |   | $ 12   |   |   |   |           |            |   |   |   |
| Stormscope | L3Harris | Discontinued Operations, Disposed of by Sale                                                                      |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Proceeds from sale of asset group                                                                                                         |   | $ 20   |   |   |   |           |            |   |   |   |
| IT Services | Discontinued Operations, Disposed of by Sale | Critical Networks                                                            |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Gain (loss) on sale of discontinued operations, net                                                                                       |   |   | $ (28) |   |   |           |            |   |   |   |
| Proceeds from sale of discontinued operations, subject to post-closing adjustments, net                                                   |   |   | 646    |   |   |           |            |   |   |   |
| Gain on disposal of discontinued operation, net of tax                                                                                    |   |   | $ 55   |   |   |           |            |   |   |   |
| Discontinued operations (in dollars per share)                                                                                            |   |   | $ 0.44 |   |   |           |            |   |   |   |
| Goodwill assigned to disposal group                                                                                                       |   |   |   | $ 487  |   |           |            |   |   |   |
| Impairment of goodwill and other assets                                                                                                   |   |   |   | 240    |   |           |            |   |   |   |
| Goodwill impairment loss                                                                                                                  |   |   |   | $ 228  |   |           |            |   |   |   |
| CapRock | Discontinued Operations, Disposed of by Sale                                                                                    |   |   |   |   |   |           |            |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**         |   |   |   |   |   |           |            |   |   |   |
| Gain (loss) on sale of discontinued operations, net                                                                                       |   |   |   |   | $ 14   |           |            |   |   |   |
| Proceeds from sale of discontinued operations, subject to post-closing adjustments, net                                                   |   |   |   |   | 368    |           |            |   |   |   |
| Gain on disposal of discontinued operation, net of tax                                                                                    |   |   |   |   | $ 61   |           |            |   |   |   |
| Discontinued operations (in dollars per share)                                                                                            |   |   |   |   | $ 0.49 |           |            |   |   |   |

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
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Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
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Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
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Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.
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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.
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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.
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