| **ACQUISITIONS, DIVESTITURES AND ASSET SALES - Acquisition of TDL - Pro Forma Information (Details) - USD ($) $ in Millions** | 3 Months Ended | 9 Months Ended |
|-------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
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| Viasat TDL                                                                                                                    |           |           |   |   |   |
| **Business Acquisition [Line Items]**                                                                                         |           |           |   |   |   |
| Revenues                                                                                                                      |           | $ 105          |   |   | $ 290 |
| Tactical Data Links (TDL) Product Line                                                                                        |           |           |   |   |   |
| **Business Acquisition [Line Items]**                                                                                         |           |           |   |   |   |
| Net revenues from acquiree for the reporting period                                                                           | $ 97           |           | $ 261 |   |   |
| Earnings from acquiree for the reporting period                                                                               | $ 38           | $ 30           |   | $ 86 | $ 55 |

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