Commitments and Contingent Liabilities (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Commitments and Contingent Liabilities [Abstract]
Operating lease terms	ranging from one month to 20 years
Expected costs to construct new facility	$ 36.3
Expected direct capital expenditures	24.6
Expected costs for new facility, time period (in years)	1
Net rental expense	11.4	10.2	12.9
Sublease income	0.8	0.7	0.7
Operating Leases, Future Minimum Payments Due [Abstract]
2012	12.2
2013	6.3
2014	5.6
2015	4.1
2016	3.5
Thereafter	17.6
Total	49.3
Less sublease income	0.4
Total net	48.9
Unconditional contractual commitments for the purchase of raw materials, utilities and equipment	21.7
Unconditional contractual commitments due within one year	13.8
Accrual for insurance obligations	9.2
Receivable due from insurance company	5.2
Brazilian government penalties and interest on tax obligations, accrual	$ 7.8