Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended
	Dec. 31, 2011 Environmental	Dec. 31, 2010 Environmental	Dec. 31, 2009 Environmental	Dec. 31, 2011 Brazilian Tax Disputes - Case 1	Aug. 31, 2005 Brazilian Tax Disputes - Case 2	Dec. 31, 2011 Other person case claim
Commitments and Contingencies
Accruals for environmental matters	$ 2.5	$ 4.2
Charges related to environmental matters	2.0	2.6	1.5
Estimated claims or assessment, before tax				3	3
Estimated claims or assessment, additional amount				29	10
Estimated claims or assessment, aggregate amount					13
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						18,966
Number of claims pending in New York Supreme Court						18,477
Number of claims pending in various counties in a number of state courts, and in certain Federal District Courts						489
Number of claims dismissed to date by stipulation or summary judgment prior to trial						25,739
Number of active or in extremis cases in New York County						1,008