Goodwill and Other intangible assets - Other intangible assets (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount total	$ 806.9	$ 105.0
Accumulated amortization	56.8	41.9
Net carrying amount	750.1	63.1
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense relating to intangible assets	15.2	5.4	5.4
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2014		18.8
2015		18.8
2016		18.7
2017		17.9
2018		17.3
Trademarks [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - indefinite life intangible assets	575.3	55.0
Net carrying amount	575.3	55.0
Contractual or Distributer Relationships [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	90.0	0
Accumulated amortization	4.7	0
Net carrying amount	85.3	0
Useful life (in years)	15 years
Technology [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	89.5	16.0
Accumulated amortization	21.8	16.0
Net carrying amount	67.7	0
Useful life (in years)	10 years
Patents & Other Trademarks [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	27.4	12.9
Accumulated amortization	12.2	9.9
Net carrying amount	15.2	3.0
Patents & Other Trademarks [Member] | Minimum [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Useful life (in years)	5 years
Patents & Other Trademarks [Member] | Maximum [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Useful life (in years)	20 years
Customer Database [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	8.8	4.9
Accumulated amortization	5.5	4.9
Net carrying amount	3.3	0
Useful life (in years)	5 years
Foam Formula [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	3.7	3.7
Accumulated amortization	3.7	3.7
Net carrying amount	0	0
Useful life (in years)	10 years
Reacquired Rights [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	5.4	5.8
Accumulated amortization	5.4	5.3
Net carrying amount	0	0.5
Useful life (in years)	3 years
Customer Relationships [Member]
Intangible Assets, Combined Indefinite lived and Finite lived Intangible Assets by Major Class [Line Items]
Gross carrying amount - finite life intangible assets	6.8	6.7
Accumulated amortization	3.5	2.1
Net carrying amount	$ 3.3	$ 4.6
Useful life (in years)	5 years