| **BUSINESS COMBINATION - Preliminary Measurement of Assets Acquired, Liabilities Assumed and Noncontrolling Interest (Details) - USD ($) $ in Millions** | 9 Months Ended | 12 Months Ended |          |          |          |         |
|----------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|-----------------|----------|----------|----------|---------|
||
| **Preliminary Fair Value**                                                                                                                               |           |            |     |     |     |    |
| Goodwill                                                                                                                                                 |           | $ 18,876        | $ 18,189 | $ 20,001 |     |    |
| **Measurement Period Adjustments**                                                                                                                       |           |            |     |     |     |    |
| Goodwill                                                                                                                                                 |           | $ (90)          |     |     |     |    |
| L3Harris                                                                                                                                                 |           |            |     |     |     |    |
| **Preliminary Fair Value**                                                                                                                               |           |            |     |     |     |    |
| Receivables                                                                                                                                              | $ 829          |            |     |     |     |    |
| Contract assets                                                                                                                                          | 1,651          |            |     |     |     |    |
| Inventories                                                                                                                                              | 983            |            |     |     |     |    |
| Other current assets                                                                                                                                     | 501            |            |     |     |     |    |
| Property, plant and equipment                                                                                                                            | 1,219          |            |     |     |     |    |
| Operating lease right-of-use assets                                                                                                                      | 812            |            |     |     |     |    |
| Goodwill                                                                                                                                                 | 14,582         |            |     |     |     |    |
| Other intangible assets                                                                                                                                  | 8,458          |            |     |     |     | $ 8,458 |
| Other non-current assets                                                                                                                                 | 314            |            |     |     |     |    |
| Total assets acquired                                                                                                                                    | 29,349         |            |     |     |     |    |
| Accounts payable                                                                                                                                         | 885            |            |     |     |     |    |
| Contract liabilities                                                                                                                                     | 726            |            |     |     |     |    |
| Other current liabilities                                                                                                                                | 1,073          |            |     |     |     |    |
| Operating lease liabilities                                                                                                                              | 760            |            |     |     |     |    |
| Defined benefit plans                                                                                                                                    | 1,411          |            |     |     |     |    |
| Long-term debt, net                                                                                                                                      | 3,548          |            |     |     |     |    |
| Other long-term liabilities                                                                                                                              | 2,141          |            |     |     |     |    |
| Total liabilities assumed                                                                                                                                | 10,544         |            |     |     |     |    |
| Net assets acquired                                                                                                                                      | 18,805         |            |     |     |     |    |
| Noncontrolling interests                                                                                                                                 | (155)          |            |     |     |     |    |
| Total net consideration transferred                                                                                                                      | 18,650         |            |     |     |     |    |
| **Measurement Period Adjustments**                                                                                                                       |           |            |     |     |     |    |
| Receivables                                                                                                                                              | (20)           |            |     |     |     |    |
| Contract assets                                                                                                                                          | (57)           |            |     |     |     |    |
| Inventories                                                                                                                                              | (73)           |            |     |     |     |    |
| Other current assets                                                                                                                                     | (16)           |            |     |     |     |    |
| Property, plant and equipment                                                                                                                            | 43             |            |     |     |     |    |
| Operating lease right-of-use assets                                                                                                                      | 108            |            |     |     |     |    |
| Goodwill                                                                                                                                                 | (841)          |            |     |     |     |    |
| Other intangible assets                                                                                                                                  | 1,690          |            |     |     |     |    |
| Other non-current assets                                                                                                                                 | (13)           |            |     |     |     |    |
| Total assets acquired                                                                                                                                    | 821            |            |     |     |     |    |
| Accounts payable                                                                                                                                         | (13)           |            |     |     |     |    |
| Contract liabilities                                                                                                                                     | 4              |            |     |     |     |    |
| Other current liabilities                                                                                                                                | 301            |            |     |     |     |    |
| Operating lease liabilities                                                                                                                              | 45             |            |     |     |     |    |
| Defined benefit plans                                                                                                                                    | 0              |            |     |     |     |    |
| Long-term debt, net                                                                                                                                      | 0              |            |     |     |     |    |
| Other long-term liabilities                                                                                                                              | 480            |            |     |     |     |    |
| Total liabilities assumed                                                                                                                                | 817            |            |     |     |     |    |
| Net assets acquired                                                                                                                                      | 4              |            |     |     |     |    |
| Noncontrolling interests                                                                                                                                 | (4)            |            |     |     |     |    |
| Total net consideration transferred                                                                                                                      | $ 0            |            |     |     |     |    |
| As Previously Reported | L3Harris                                                                                                                        |           |            |     |     |     |    |
| **Preliminary Fair Value**                                                                                                                               |           |            |     |     |     |    |
| Receivables                                                                                                                                              |           |            |     |     | $ 849    |    |
| Contract assets                                                                                                                                          |           |            |     |     | 1,708    |    |
| Inventories                                                                                                                                              |           |            |     |     | 1,056    |    |
| Other current assets                                                                                                                                     |           |            |     |     | 517      |    |
| Property, plant and equipment                                                                                                                            |           |            |     |     | 1,176    |    |
| Operating lease right-of-use assets                                                                                                                      |           |            |     |     | 704      |    |
| Goodwill                                                                                                                                                 |           |            |     |     | 15,423   |    |
| Other intangible assets                                                                                                                                  |           |            |     |     | 6,768    |    |
| Other non-current assets                                                                                                                                 |           |            |     |     | 327      |    |
| Total assets acquired                                                                                                                                    |           |            |     |     | 28,528   |    |
| Accounts payable                                                                                                                                         |           |            |     |     | 898      |    |
| Contract liabilities                                                                                                                                     |           |            |     |     | 722      |    |
| Other current liabilities                                                                                                                                |           |            |     |     | 772      |    |
| Operating lease liabilities                                                                                                                              |           |            |     |     | 715      |    |
| Defined benefit plans                                                                                                                                    |           |            |     |     | 1,411    |    |
| Long-term debt, net                                                                                                                                      |           |            |     |     | 3,548    |    |
| Other long-term liabilities                                                                                                                              |           |            |     |     | 1,661    |    |
| Total liabilities assumed                                                                                                                                |           |            |     |     | 9,727    |    |
| Net assets acquired                                                                                                                                      |           |            |     |     | 18,801   |    |
| Noncontrolling interests                                                                                                                                 |           |            |     |     | (151)    |    |
| Total net consideration transferred                                                                                                                      |           |            |     |     | $ 18,650 |    |

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.
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Amount of assets acquired at the acquisition date.
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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.
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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.
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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.
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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.
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The amount of inventory recognized as of the acquisition date.
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Amount of liabilities assumed at the acquisition date.
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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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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