Discontinued Operations Discontinued Operations - Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 429.5	$ 404.5	$ 1,257.0	$ 1,157.8
Cost of goods sold	256.2	236.3	761.2	663.7
Gross profit	173.3	168.2	495.8	494.1
Selling, general and administrative expenses	70.5	67.1	207.3	201.5
Research and development expenses	13.3	12.1	39.4	36.2
Repositioning expenses	4.0	3.8	6.9	10.4
Interest expense and related financing costs	20.1	19.8	59.7	61.6
Other expense, net	(0.2)	(0.5)	(12.0)	13.3
Total costs and expenses	114.6	107.5	313.1	342.6
Net (loss) income from discontinued operations	$ 0.0	$ 1.6	$ 0.0	10.9
Grace Construction Products | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales				99.6
Cost of goods sold				62.6
Gross profit				37.0
Selling, general and administrative expenses				21.6
Research and development expenses				1.7
Repositioning expenses				22.0
Interest expense and related financing costs				0.7
Other expense, net				4.4
Total costs and expenses				50.4
(Loss) Income from discontinued operations before income taxes				(13.4)
Benefit from (provision for) income taxes				2.6
(Loss) Income from discontinued operations after income taxes				(10.8)
Less: Net income attributable to noncontrolling interests				(0.1)
Net (loss) income from discontinued operations				$ 10.9