POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - PENSION PLANS WITH ACCUMULATED AND PROJECTED BENEFIT OBLIGATIONS IN EXCESS OF PLAN ASSETS (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Accumulated Benefit Obligation Exceeds the Fair Value of Plan Assets
Projected benefit obligation	$ 14,229	$ 12,024
Accumulated benefit obligation	12,406	10,406
Fair value of plan assets	8,353	6,086
Projected Benefit Obligation Exceeds the Fair Value of Plan Assets
Projected benefit obligation	15,325	12,962
Accumulated benefit obligation	13,279	11,149
Fair value of plan assets	$ 9,301	$ 6,895