POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - DEFINED CONTRIBUTION RETIREMENT PLANS (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Defined Contribution Plan Disclosure [Line Items] | |||
| Defined Contribution Plan, Cost Recognized | $ 292 | $ 305 | $ 311 |
| UNITED STATES | |||
| Defined Contribution Plan Disclosure [Line Items] | |||
| Defined Contribution Plan Contribution Rate | 14.00% | 14.00% | 15.00% |