PROPERTY, PLANT AND EQUIPMENT, NET (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment			$ 3,184,000,000	$ 3,057,000,000
Accumulated depreciation and amortization			2,150,000,000	2,061,000,000
Asset retirement obligation, liabilities incurred			0	0
Depreciation and amortization			180,000,000	166,000,000	$ 163,000,000
Asset impairment charges			0	1,000,000	23,000,000
Non-cash capital expenditures			2,000,000	2,000,000	2,000,000
Assets Held under Capital Leases [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment			21,000,000	13,000,000
Accumulated depreciation and amortization			12,000,000	10,000,000
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment			596,000,000	574,000,000
Asset retirement obligation			0	2,000,000
Capitalized Software Costs [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment			358,000,000	375,000,000
Amortization			8,000,000	11,000,000	15,000,000
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization			$ 165,000,000	$ 156,000,000	$ 153,000,000
Aplicare Business [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges	$ 21,000,000
Cleaning [Member] | Aplicare Business [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges		$ 21,000,000