DISCONTINUED OPERATIONS - Balance Sheet Disclosures (Details) - USD ($) $ in Millions	Jun. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 1.8	$ 32.1
Current assets of discontinued operations	18.9	355.6	[1]
Current liabilities of discontinued operations	7.0	83.0	[1]
Redeemable noncontrolling interests of discontinued operations	0.0	10.3	[1]
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	1.8	32.1
Accounts receivable, net	8.2	122.2
Inventories	5.5	197.3
Prepaid expenses and other current assets	3.4	4.0
Current assets of discontinued operations	18.9	355.6
Property, plant and equipment, net	5.1	120.6
Goodwill	0.0	74.7
Intangible assets	0.0	20.6
Deferred tax assets	0.0	2.1
Other assets	0.0	54.9
Total assets of discontinued operations	24.0	628.5
Accounts payable	5.8	41.9
Accrued liabilities	1.2	29.1
Deferred revenues	0.0	12.0
Current liabilities of discontinued operations	7.0	83.0
Other long-term liabilities	0.0	4.2
Total liabilities of discontinued operations	7.0	87.2
Redeemable noncontrolling interests of discontinued operations	$ 0.0	$ 10.3

[1] The condensed consolidated balance sheet as of September 30, 2016 was derived from audited financial statements as of that date, but does not include all disclosures required by accounting principles generally accepted in the United States of America.