Other (Income) Expense, net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended
	Jun. 30, 2012	Sep. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other (Income) Expense, net
Business interruption insurance settlement				$ (9.6)
Gain on sale of land				(4.9)
Pension curtailment gain					(5.7)
Environmental expense				5.0	2.7	3.5
Other (income) expense, net	(9.5)	2.7	(5.7)	(9.5)	(3.0)	3.5
Reduction in projected plan obligation			$ 1.6