POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - COMPONENTS OF NET PERIODIC BENEFIT COST (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Pension Benefits
Service cost	$ 298	[1]	$ 300	[1]	$ 267
Interest cost	590	[1]	560	[1]	611
Expected return on plan assets	(701)		(587)		(573)
Prior service cost /(credit) amortization	26		18		21
Net actuarial loss amortization	214		213		102
Special termination benefits	5		39		0
Curtailments, settlements and other	0		4		6
GROSS BENEFIT COST	432		547		434
Dividends on ESOP preferred stock	0		0		0
NET PERIODIC BENEFIT COST/(CREDIT)	432		547		434
CHANGE IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss - current year	1,102		264
Prior service cost - current year	4		104
Amortization of net actuarial loss	(214)		(213)
Amortization of prior service (cost) / credit	(26)		(18)
Settlement / curtailment cost	0		(4)
Currency translation and other	245		(2)
TOTAL CHANGE IN AOCI	1,111		131
NET AMOUNTS RECOGNIZED IN PERIODIC BENEFIT COST AND AOCI	1,543		678
Other Retiree Benefits
Service cost	149	[2]	190	[2]	142
Interest cost	256	[2]	260	[2]	276
Expected return on plan assets	(385)		(382)		(434)
Prior service cost /(credit) amortization	(20)		(20)		(20)
Net actuarial loss amortization	118		199		99
Special termination benefits	9		18		27
Curtailments, settlements and other	0		0		0
GROSS BENEFIT COST	127		265		90
Dividends on ESOP preferred stock	(64)		(70)		(74)
NET PERIODIC BENEFIT COST/(CREDIT)	63		195		16
CHANGE IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE INCOME (AOCI)
Net actuarial loss - current year	215		(1,594)
Prior service cost - current year	(5)		0
Amortization of net actuarial loss	(118)		(199)
Amortization of prior service (cost) / credit	20		20
Settlement / curtailment cost	0		0
Currency translation and other	2		1
TOTAL CHANGE IN AOCI	114		(1,772)
NET AMOUNTS RECOGNIZED IN PERIODIC BENEFIT COST AND AOCI	$ 177		$ (1,577)

[1] Primarily non-U.S.-based defined benefit retirement plans.

[2] Primarily U.S.-based other postretirement benefit plans.