POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - RECONCILIATION OF BENEFIT PLANS RECOGNIZED IN THE BALANCE SHEET (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Pension Benefits
CLASSIFICATION OF NET AMOUNT RECOGNIZED
Noncurrent assets	$ 128	$ 168
Current liability	(43)	(47)
Noncurrent liability	(5,684)	(4,388)
NET AMOUNT RECOGNIZED	(5,599)	(4,267)
AMOUNTS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss	4,010	2,315
Prior service cost (credit)	261	354
NET AMOUNTS RECOGNIZED IN AOCI	4,271	2,669
CHANGE IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss - current year	2,009	(827)
Prior service cost - current year	(44)	93
Amortization of net actuarial loss	(102)	(154)
Amortization of prior service (cost) / credit	(21)	(18)
Settlement / curtailment cost	(6)	0
Currency translation and other	(234)	262
TOTAL CHANGE IN AOCI	1,602	(644)
NET AMOUNTS RECOGNIZED IN PERIODIC BENEFIT COST AND AOCI	2,036	(106)
Other Retiree Benefits
CLASSIFICATION OF NET AMOUNT RECOGNIZED
Noncurrent assets	0	0
Current liability	(23)	(24)
Noncurrent liability	(3,270)	(1,887)
NET AMOUNT RECOGNIZED	(3,293)	(1,911)
AMOUNTS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss	3,565	2,181
Prior service cost (credit)	(75)	(92)
NET AMOUNTS RECOGNIZED IN AOCI	3,490	2,089
CHANGE IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss - current year	1,516	(60)
Prior service cost - current year	0	7
Amortization of net actuarial loss	(99)	(96)
Amortization of prior service (cost) / credit	20	18
Settlement / curtailment cost	0	0
Currency translation and other	(36)	20
TOTAL CHANGE IN AOCI	1,401	(111)
NET AMOUNTS RECOGNIZED IN PERIODIC BENEFIT COST AND AOCI	$ 1,417	$ (124)