Asset and Liabilities Held for Sale (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Receivables, net	$ 22.2	$ 21.0
Inventories, net	25.3	30.4
Prepayments and other current assets	11.4	10.3
Property, plant and equipment, net	47.7	47.7
Goodwill	7.1	7.3
Other intangible assets, net	20.6	21.1
Other assets	0.3	0.5
Impairment of carrying value	(69.1)	(71.0)
Assets held for sale	65.5	67.3
Accounts payable and accrued expenses	25.6	24.6
Other liabilities	5.7	4.9
Liabilities held for sale	$ 31.3	$ 29.5