POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - RECONCILIATION OF BENEFIT PLANS RECOGNIZED IN THE BALANCE SHEET (DETAILS) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Pension Benefits
CLASSIFICATION OF NET AMOUNT RECOGNIZED
Noncurrent assets	$ 69	$ 114
Current liability	(40)	(40)
Noncurrent liability	(5,984)	(6,027)
NET AMOUNT RECOGNIZED	(5,955)	(5,953)
AMOUNTS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss	5,169	4,049
Prior service cost (credit)	344	353
NET AMOUNTS RECOGNIZED IN AOCI	5,513	4,402
Other Retiree Benefits
CLASSIFICATION OF NET AMOUNT RECOGNIZED
Noncurrent assets	0	0
Current liability	(25)	(23)
Noncurrent liability	(1,906)	(1,713)
NET AMOUNT RECOGNIZED	(1,931)	(1,736)
AMOUNTS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss	1,871	1,772
Prior service cost (credit)	(39)	(54)
NET AMOUNTS RECOGNIZED IN AOCI	$ 1,832	$ 1,718