ACCUMULATED OTHER COMPREHENSIVE INCOME - ADDITIONAL INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	$ 5	$ 739	$ (209)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	7	0	(4)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(621)	328	$ (356)
Reclassification out of Accumulated Other Comprehensive Income
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(1)	(2)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	0	(1)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	87	109
Other Comprehensive Income (Loss)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	6	741
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	7	1
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	$ (708)	$ 219