POSTRETIREMENT BENEFITS AND EMPLOYEE STOCK OWNERSHIP PLAN - RECONCILIATION OF BENEFIT OBLIGATIONS AND PLAN ASSETS (Details) - USD ($) $ in Millions		12 Months Ended
		Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2013
Pension Benefits
CHANGE IN BENEFIT OBLIGATION
Benefit obligation at beginning of year	[1],[2]	$ 17,053		$ 14,514
Service cost		317	[2]	298	[2]	$ 300
Interest cost		545	[2]	590	[2]	560
Participants' contributions	[2]	19		20
Amendments	[2]	17		4
Defined Benefit Plan, Actuarial Gain (Loss)	[2]	524		1,365
Acquisitions (divestitures)	[2]	7		0
Special termination benefits	[2]	11		5
Currency translation and other	[2]	(1,908)		797
Benefit payments	[2]	(634)		(540)
BENEFIT OBLIGATION AT END OF YEAR	[1],[2]	15,951		17,053		14,514
CHANGE IN PLAN ASSETS
Fair value of plan assets at beginning of year	[2]	11,098		8,561
Actual return on plan assets	[2]	1,016		964
Employer contributions	[2]	262		1,549
Participants' contributions	[2]	19		20
Currency translation and other	[2]	(1,156)		544
ESOP debt impacts	[2],[3]	0		0
Benefit payments	[2]	(634)		(540)
FAIR VALUE OF PLAN ASSETS AT END OF YEAR	[2]	10,605		11,098		8,561
FUNDED STATUS	[2]	(5,346)		(5,955)
Other Retiree Benefits
CHANGE IN BENEFIT OBLIGATION
Benefit obligation at beginning of year	[1],[4]	5,505		5,289
Service cost		156	[4]	149	[4]	190
Interest cost		240	[4]	256	[4]	260
Participants' contributions	[4]	71		72
Amendments	[4]	(325)		(5)
Defined Benefit Plan, Actuarial Gain (Loss)	[4]	(399)		(46)
Acquisitions (divestitures)	[4]	0		0
Special termination benefits	[4]	23		9
Currency translation and other	[4]	(134)		20
Benefit payments	[4]	(233)		(239)
BENEFIT OBLIGATION AT END OF YEAR	[1],[4]	4,904		5,505		5,289
CHANGE IN PLAN ASSETS
Fair value of plan assets at beginning of year	[4]	3,574		3,553
Actual return on plan assets	[4]	10		124
Employer contributions	[4]	18		31
Participants' contributions	[4]	71		72
Currency translation and other	[4]	(6)		0
ESOP debt impacts	[3],[4]	36		33
Benefit payments	[4]	(233)		(239)
FAIR VALUE OF PLAN ASSETS AT END OF YEAR	[4]	3,470		3,574		$ 3,553
FUNDED STATUS	[4]	$ (1,434)		$ (1,931)

[1] For the pension benefit plans, the benefit obligation is the projected benefit obligation. For other retiree benefit plans, the benefit obligation is the accumulated postretirement benefit obligation.

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

[3] Represents the net impact of ESOP debt service requirements, which is netted against plan assets for other retiree benefits.

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