| **EMPLOYEE BENEFIT PLANS (Retirement Income Plans' Assets Carried at Fair Value) (Details) - Retirement Income - USD ($) $ in Millions** | Jun. 30, 2023 | Jun. 30, 2022 |
|------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | $ 381         | $ 412         |
| Total assets in the fair value hierarchy                                                                                                 |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 74            | 0             |
| Total common collect trust measured at net asset value                                                                                   |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 307           | 412           |
| Cash equivalents — Level 1 | Total assets in the fair value hierarchy                                                              |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 74            | 0             |
| Bond funds | Total common collect trust measured at net asset value                                                                      |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 289           | 391           |
| International equity funds | Total common collect trust measured at net asset value                                                      |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 15            | 14            |
| Domestic equity funds | Total common collect trust measured at net asset value                                                           |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 0             | 0             |
| Short-term investment fund | Total common collect trust measured at net asset value                                                      |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | 1             | 4             |
| Real estate fund | Total common collect trust measured at net asset value                                                                |          |          |
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                         |          |          |
| Total assets at fair value                                                                                                               | $ 2           | $ 3           |

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| - 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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| - Definition
Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.
+ References
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