PROPERTY, PLANT AND EQUIPMENT, NET (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 3,057,000,000	$ 2,932,000,000
Accumulated depreciation and amortization		2,061,000,000	2,001,000,000
Asset retirement obligation, liabilities incurred		0	0
Depreciation and amortization		166,000,000	163,000,000	$ 165,000,000
Asset impairment charges		1,000,000	23,000,000	10,000,000
Non-cash capital expenditures		2,000,000	2,000,000	10,000,000
Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment		13,000,000	13,000,000
Accumulated depreciation and amortization		10,000,000	8,000,000
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment		131,000,000	116,000,000
Asset retirement obligation		2,000,000	3,000,000
Capitalized software costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment		375,000,000	371,000,000
Amortization		11,000,000	15,000,000	16,000,000
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization		$ 156,000,000	$ 153,000,000	$ 157,000,000
Aplicare Business [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 21,000,000