EMPLOYEE BENEFIT PLANS (Summarized Information for Defined Benefit Retirement Income and Healthcare Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Retirement Income Plans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer contributions	$ 63	$ 21	$ 31
Retirement Health Care Plans [Member] | Retirement Health Care [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation as of beginning of year	38	42
Service cost	0	0	0
Interest cost	2	2	2
Actuarial loss (gain)	(3)	(2)
Plan amendments	0	0
Translation and other adjustments	0	0
Benefits paid	(3)	(4)
Benefit obligation as of end of year	34	38	42
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of assets as of beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	3	4
Benefits paid	(3)	(4)
Translation and other adjustments	0	0
Fair value of plan assets as of end of year	0	0	0
Accrued benefit cost, net funded status	(34)	(38)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Pension benefit assets	0	0
Current accrued benefit liability	(2)	(2)
Non-current accrued benefit liability	(32)	(36)
Accrued benefit cost, net	(34)	(38)
Other Postretirement Benefits Plan [Member] | Retirement Income Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation as of beginning of year	593	633
Service cost	1	1	1
Interest cost	23	23	22
Actuarial loss (gain)	26	(21)
Plan amendments	0	1
Translation and other adjustments	0	(1)
Benefits paid	(39)	(43)
Benefit obligation as of end of year	604	593	633
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of assets as of beginning of year	420	434
Actual return on plan assets	41	8
Employer contributions	63	22
Benefits paid	(39)	(43)
Translation and other adjustments	0	(1)
Fair value of plan assets as of end of year	485	420	$ 434
Accrued benefit cost, net funded status	(119)	(173)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Pension benefit assets	48	3
Current accrued benefit liability	(12)	(13)
Non-current accrued benefit liability	(155)	(163)
Accrued benefit cost, net	$ (119)	$ (173)