| **EMPLOYEE BENEFIT PLANS (Information for Retirement Income Plans with Accumulated Benefit Obligation in Excess of Plan Assets) (Details) - Retirement Income [Member] - Retirement Income [Member] - USD ($) $ in Millions** | Jun. 30, 2020 | Jun. 30, 2019 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Defined Benefit Plan Disclosure [Line Items]**                                                                                                                                                                              |          |          |
| Projected benefit obligation                                                                                                                                                                                                  | $ 172         | $ 167         |
| Accumulated benefit obligation                                                                                                                                                                                                | 170           | 166           |
| Fair value of plan assets                                                                                                                                                                                                     | $ 0           | $ 0           |

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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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.
+ References
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