VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ (3)	$ (5)	$ (4)
Charged to costs and expenses	(4)	0	(1)
Charged to other accounts	0	0	0
Deductions	0	2	0
Balance at end of period	(7)	(3)	(5)
LIFO Allowance [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	(26)	(32)	(34)
Charged to costs and expenses	(1)	0	(1)
Charged to other accounts	0	0	0
Deductions	0	6	3
Balance at end of period	(27)	(26)	(32)
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	(40)	(37)	(34)
Charged to costs and expenses	(3)	(3)	(5)
Charged to other accounts	0	0	0
Deductions	0	0	2
Balance at end of period	$ (43)	$ (40)	$ (37)