Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	3 Months Ended		9 Months Ended					9 Months Ended
	Sep. 30, 2012 disputes	Sep. 30, 2012 Environmental	Sep. 30, 2011 Environmental	Sep. 30, 2012 Environmental	Sep. 30, 2011 Environmental	Dec. 31, 2011 Environmental	Sep. 30, 2012 Brazilian Tax Disputes - Case 1	Aug. 31, 2005 Brazilian Tax Disputes - Case 2	Sep. 30, 2012 Other defendants case claim
Commitments and Contingencies
Accruals for environmental matters		$ 2.2		$ 2.2		$ 2.5
Charges related to environmental matters		0.2	0.7	0.7	1.5
Estimated claims or assessment, before tax							3	3
Estimated claims or assessment, additional amount							29	9
Number of Commercial Disputes	1
Estimated claims or assessment, aggregate amount								12
Approximate number of defendants that includes the company named in legal actions									90
Minimum amount of damages									20
Maximum amount of damages									$ 25
Number of pending claims									18,341
Number of claims pending in New York Supreme Court									17,845
Number of claims pending in various counties in a number of state courts, and in certain Federal District Courts									496
Number of claims dismissed to date by stipulation or summary judgment prior to trial									26,428
Number of active or in extremis cases in New York County									605