Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended
	Dec. 31, 2012 Environmental	Dec. 31, 2011 Environmental	Dec. 31, 2010 Environmental	Dec. 31, 2012 Brazilian Tax Disputes - Case 1	Aug. 31, 2005 Brazilian Tax Disputes - Case 2	Dec. 31, 2012 Other defendants case claim
Commitments and Contingencies
Accruals for environmental matters	$ 1.9	$ 2.5
Charges related to environmental matters	1.2	2.0	2.6
Estimated claims or assessment, before tax				3	3
Estimated claims or assessment, additional amount				29	9
Estimated claims or assessment, aggregate amount					12
Approximate number of defendants in claims against the company (in persons)						90
Minimum amount of damages						20
Maximum amount of damages						$ 25
Number of pending claims						18,302
Number of claims pending in New York Supreme Court						17,813
Number of claims pending in various counties in a number of state courts, and in certain Federal Distrct Courts						489
Number of claims dismissed to date by stipulation or summary judgment prior to trial						26,480
Number of active or in extremis cases in New York County						651