Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Examination [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%	35.00%
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 0.0	$ 0.0
Roll forward of uncertain tax positions
Balance	14.1	17.7	$ 18.7	$ 23.1
Additions for current year tax positions	0.9	0.8	6.8
Additions for prior year tax positions	4.0	0.7	0.2
Reductions for prior year tax positions and reclassifications	(2.8)	$ (2.5)	(0.2)
Settlements	$ (5.7)		(3.3)
Transferred to GCP upon Separation			$ 7.9
Domestic Tax Authority [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2016
Open Tax Year	2017
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2011 2012 2013 2014 2015 2016
Open Tax Year	2017
Federal Ministry of Finance, Germany [Member]
Income Tax Examination [Line Items]
Income Tax Examination, Year under Examination	2014 2015 2016
Open Tax Year	2017
SWEDEN
Income Tax Examination [Line Items]
Open Tax Year	2013 2014 2015 2016 2017