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, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Apr. 30, 2015
Discontinued operations
Non-cash impairment charge of discontinued operations										$ 3.2	$ 44.7	$ 0.0
Gain on divestiture										0.0	9.3	5.5
Proceeds from divestitures										13.6	215.6	30.0
Restructuring and acquisition-related costs										12.1	0.0	45.4
Income (loss) from discontinued operations, net of tax		$ 0.0	$ 0.0	$ 0.0	$ (2.6)	$ 1.9	$ (44.5)	$ 5.1	$ (10.5)	(2.6)	(48.0)	20.1
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	553.2
Proceeds from divestitures	$ 13.6										136.9		$ 150.5
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax										(3.7)	(39.4)	30.6
Discontinued Operation, Tax Effect of Discontinued Operation										(1.1)	8.6	10.5
Income (loss) from discontinued operations, net of tax										(2.6)	(48.0)	20.1
Paper [Member]
Discontinued operations
Gain on divestiture											9.3
Disposal Group, Including Discontinued Operation, Revenue											160.0
Proceeds from divestitures											78.7
Clysar [Member]
Discontinued operations
Gain on divestiture												5.5
Disposal Group, Including Discontinued Operation, Revenue												70.0
Proceeds from divestitures												$ 30.0
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