RISK MANAGEMENT ACTIVITIES AND FAIR VALUE MEASUREMENTS - FAIR VALUES AND AMOUNTS OF GAINS AND LOSSES ON QUALIFYING AND NON-QUAIFYING FINANCIAL INSTRUMENTS USED IN HEDGING TRANSACTIONS (DETAILS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Derivatives in Cash Flow Hedging Relationships
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	$ 17		$ 21
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	44		221
Derivatives in Cash Flow Hedging Relationships | Interest Rate
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	3		7
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	6		6
Derivatives in Cash Flow Hedging Relationships | Foreign currency hedges
Notional Amount	951		951
Fair Value Asset (Liability)	187		168
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	14		14
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	38		215
Derivatives in Net Investment Hedging Relationships
Notional Amount	831		1,303
Fair Value Asset (Liability)	48		233
Amount of Gain (Loss) Recognized in AOCI on Derivative (Effective Portion)	30		145
Amount of Gain (Loss) Recognized in Income	0		(2)
Derivatives in Fair Value Hedging Relationships
Amount of Gain (Loss) Recognized in Income	(1)		4
Derivatives in Fair Value Hedging Relationships | Interest Rate
Notional Amount	9,738		9,117
Fair Value Asset (Liability)	168		132
Amount of Gain (Loss) Recognized in Income	36		(167)
Derivatives in Fair Value Hedging Relationships | Debt
Amount of Gain (Loss) Recognized in Income	(37)		171
Derivatives Not Designated as Hedging Instruments | Foreign currency hedges
Notional Amount	12,111		7,080
Fair Value Asset (Liability)	(42)		(71)
Amount of Gain (Loss) Recognized in Income	$ 123	[1]	$ (34)	[1]

[1] The gain or loss on non-qualifying foreign currency contracts substantially offsets the foreign currency mark-to-market impact of the related exposure.