PENSION, DEFERRED COMPENSATION AND POST-RETIREMENT BENEFIT PLANS - 401(k) Savings Plan (U.S.) and Deferred Compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
401(k) Savings Plan (U.S.)
Minimum period following date of hire after which full-time employees become eligible to participate in the savings plan	30 days
Minimum service period after which the Company matches a portion of the participant's contributions	1 year
Company's contribution to contributory defined contribution plan	$ 41	$ 39	$ 37
Deferred Compensation
Accrued amount of deferred compensation and interest thereon	89	75
Deferred compensation expense (income) to reflect additional deferrals and change in market value (in dollars)	$ 16	$ 6	$ 6