EMPLOYEE BENEFIT PLANS (Information for Retirement Income Plans with Accumulated Benefit Obligation in Excess of Plan Assets) (Details) - Retirement Income Plans [Member] - Other Postretirement Benefit Plan [Member] - USD ($) $ in Millions	Jun. 30, 2017	Jun. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 611	$ 651
Accumulated benefit obligation	610	650
Fair value of plan assets	$ 409	$ 399