Discontinued Operations Components of Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									$ 450.3	$ 1,639.4	$ 1,858.6
Cost of goods sold									339.7	1,177.1	1,271.2
Gross profit									110.6	462.3	587.4
Selling, general and administrative									103.3	367.6	457.8
Disposal Group, Including Discontinued Operation, Operating Expense									5.7	18.2	21.2
Disposal Group, Including Discontinued Operation, Other Expense									0.0	0.0	554.7
Operating Income (loss)									1.6	76.5	(446.3)
Income (loss) from discontinued operations before income taxes									2.4	77.2	(445.5)
Provision for income taxes									(3.0)	7.2	21.3
Income (loss) from discontinued operations, net of tax									5.4	70.0	(466.8)
Gain (loss) from sale / impairment of discontinued operations before income taxes									(183.5)	(0.6)	6.7
Provision for income taxes									2.4	0.0	0.0
(Gain) loss from sale / impairment of discontinued operations, net of tax	$ 17.8	$ 1.7	$ (200.6)	$ 0.0	$ 0.0	$ (0.6)	$ 0.0	$ 0.0	(181.1)	(0.6)	$ 6.7
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net	0.0				365.4				0.0	365.4
Disposal Group, Including Discontinued Operation, Inventory	0.0				491.5				0.0	491.5
Other current assets	0.0				35.0				0.0	35.0
Current assets held for sale	0.0				891.9				0.0	891.9
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	0.0				361.5				0.0	361.5
Disposal Group, Including Discontinued Operation, Goodwill	0.0				996.4				0.0	996.4
Disposal Group, Including Discontinued Operation, Intangible Assets	0.0				703.5				0.0	703.5
Disposal Group, Including Discontinued Operations, Asbestos Related Insurance Receivable	0.0				108.5				0.0	108.5
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent	0.0				123.0				0.0	123.0
Non-current assets held for sale	0.0				2,292.9				0.0	2,292.9
Disposal Group, Including Discontinued Operation, Accounts Payable, Current	0.0				151.4				0.0	151.4
Disposal Group, Including Discontinued Operation, Employee Compensation and Benefits	0.0				61.5				0.0	61.5
Disposal Group, Including Discontinued Operation, Other Liabilities, Current	0.0				143.3				0.0	143.3
Disposal Group, Including Discontinued Operation, Liabilities, Current	0.0				356.2				0.0	356.2
Disposal Group, Including Discontinued Operation, Pension Plan Benefit Obligation	0.0				32.2				0.0	32.2
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities, Noncurrent	0.0				162.8				0.0	162.8
Disposal Group, including Discontinued Operation, Asbestos Related Liabilities	0.0				228.3				0.0	228.3
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent	0.0				82.6				0.0	82.6
Non-current liabilities held for sale	$ 0.0				$ 505.9				$ 0.0	$ 505.9