EMPLOYEE BENEFIT PLANS (Summarized Information for Defined Benefit Retirement Income and Healthcare Plans) (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Retirement Income [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Employer contributions	$ 13	$ 63	$ 21
Retirement Income [Member] \| Retirement Income [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation as of beginning of year	604	593
Service cost	1	1	1
Interest cost	20	23	23
Actuarial loss (gain)	43	26
Plan amendments	0	0
Translation and other adjustments	(1)	0
Benefits paid	(39)	(39)
Benefit obligation as of end of year	628	604	593
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of assets as of beginning of year	485	420
Actual return on plan assets	48	41
Employer contributions	13	63
Benefits paid	(39)	(39)
Translation and other adjustments	0	0
Fair value of plan assets as of end of year	507	485	420
Accrued benefit cost, net funded status	(121)	(119)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Pension benefit assets	52	48
Current accrued benefit liability	(11)	(12)
Non-current accrued benefit liability	(162)	(155)
Accrued benefit cost, net	(121)	(119)
Retirement Health Care [Member] \| Retirement Health Care [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation as of beginning of year	34	38
Service cost	0	0	0
Interest cost	1	2	2
Actuarial loss (gain)	4	(3)
Plan amendments	0	0
Translation and other adjustments	0	0
Benefits paid	(3)	(3)
Benefit obligation as of end of year	36	34	38
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	3
Benefits paid	(3)	(3)
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	(36)	(34)
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	(34)	(32)
Accrued benefit cost, net	$ (36)	$ (34)

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

Name:	us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.