Discontinued Operations, Divestitures and Acquisitions - Additional Information (Detail) - USD ($) $ in Millions			3 Months Ended								12 Months Ended
	Sep. 06, 2017	Apr. 01, 2017	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]
Gain on sale of business, net of tax	$ 640.7		$ (58.6)	$ 699.3	$ 0.0	$ 0.0	$ 19.8	$ 99.5	$ 47.6	$ 27.2	$ 640.7	$ 0.0	$ 0.0
Taxes on net gain on sale of business	197.5
Discontinued Operations, Disposed of by Sale | Diversey Care
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses	$ 3,200.0
Daylight Medical
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price of acquisition		$ 25.2
Cash paid for acquisition		3.5
Preliminary fair value of contingent consideration		21.7
Noncontingent consideration to be paid in the future		14.4
Preliminary fair value for liability-classified contingent consideration		$ 7.3