Discontinued operations (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended				12 Months Ended			16 Months Ended
	Apr. 30, 2015	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2015
Discontinued operations
Non-cash impairment charge of discontinued operations						$ 0.0	$ 3.2	$ 44.7
Gain on divestiture						0.0	0.0	9.3
Proceeds from divestitures						0.0	13.6	215.6
Restructuring and acquisition-related costs						21.6
Expected Cash Payments for Plant Closure						15.0
Income (loss) from discontinued operations, net of tax		$ 0.0	$ 0.0	$ 0.0	$ (2.6)	0.0	(2.6)	(48.0)
Pressure Sensitive Materials [Member]
Discontinued operations
Non-cash impairment charge of discontinued operations								44.7
Disposal Group, Including Discontinued Operation, Revenue							0.0	480.9
Proceeds from divestitures	$ 13.6							136.9	$ 150.5
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax							(3.7)	(39.4)
Discontinued Operation, Tax Effect of Discontinued Operation							(1.1)	8.6
Income (loss) from discontinued operations, net of tax							(2.6)	(48.0)
Paper [Member]
Discontinued operations
Gain on divestiture								9.3
Disposal Group, Including Discontinued Operation, Revenue								160.0
Proceeds from divestitures								78.7
Healthcare Plant Closure [Member]
Discontinued operations
Restructuring and acquisition-related costs							$ 7.8
Expected Cash Payments for Plant Closure						$ 7.0
Stow Plant Closure [Member]
Discontinued operations
Restructuring and acquisition-related costs								25.0
Expected Cash Payments for Stow Plant Closure								$ 20.8