Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Identifiable intangibles
Gross Carrying Amount	$ 60.0		$ 60.0
Accumulated Amortization	(7.5)		(6.6)
Net	52.5		53.4
Amortization expense	0.9	0.9
Total estimated amortization expense for the five succeeding fiscal years
Remainder of 2012	2.9
2013	3.8
2014	3.8
2015	3.8
2016	3.8
2017	3.8
Total Estimated Amortization Expense	21.9
Customer relationships
Identifiable intangibles
Gross Carrying Amount	50.0		50.0
Accumulated Amortization	(5.5)		(4.9)
Net	44.5		45.1
TerraCair Brand
Identifiable intangibles
Gross Carrying Amount	10.0		10.0
Accumulated Amortization	(2.0)		(1.7)
Net	$ 8.0		$ 8.3