FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Non-qualified deferred compensation plan assets, changes in fair value of trust assets	$ 14
Settlement of interest rate forward contracts	0	$ 25	$ 0
Payment to settle interest rate forward contracts		25
Derivatives	5	8
Derivative instruments subject to contractually defined counterparty liability position limits	4	8
Estimated amount of the existing net loss to be reclassified into earnings in the next 12 months	$ (11)
Senior notes with an annual fixed interest rate of 3.50% [Member]
Derivative [Line Items]
Debt issued				$ 500
Commodity purchase derivative contracts [Member]
Derivative [Line Items]
Maximum contract duration	2 years
Notional amounts	$ 30	47
Cash margin balances amount	1	2
Commodity purchase derivative contracts [Member] | Jet Fuel [Member]
Derivative [Line Items]
Notional amounts	16	27
Commodity purchase derivative contracts [Member] | Soybean Oil [Member]
Derivative [Line Items]
Notional amounts	$ 14	20
Foreign exchange derivative contracts [Member]
Derivative [Line Items]
Maximum contract duration	2 years
Notional amounts	$ 84	105
Interest rate derivative contracts [Member]
Derivative [Line Items]
Notional amounts		$ 0
Amortization period of settlement payment	10 years