Discontinued Operations - Balance Sheet Information (Details) - USD ($) $ in Millions	Sep. 30, 2016	Feb. 03, 2016	Dec. 31, 2015	Sep. 30, 2015
Current Assets
Cash and cash equivalents		$ 143.4		$ 0.0
Total Current Assets	$ 0.0		$ 446.4
Total Assets	0.0		867.3
Current Liabilities
Total Current Liabilities	$ 0.0		256.4
Discontinued Operations, Disposed of by Sale | Grace Construction Products
Current Assets
Cash and cash equivalents			98.6
Trade accounts receivable, net			203.6
Inventories			105.3
Other current assets			38.9
Total Current Assets			446.4
Properties and equipment, net of accumulated depreciation and amortization			217.5
Goodwill			102.5
Technology and other intangible assets, net			33.3
Deferred income taxes		$ 85.0	32.0
Overfunded defined benefit pension plans			26.1
Other assets			9.5
Total Assets			867.3
Current Liabilities
Debt payable within one year			25.7
Accounts payable			109.0
Other current liabilities			121.7
Total Current Liabilities			256.4
Deferred income taxes			8.7
Unrecognized tax benefits			11.1
Underfunded and unfunded defined benefit pension plans			79.0
Other liabilities			8.6
Total Liabilities			$ 363.8