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