Impairments Restructuring Charges and Other Items (Details 1) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Activities for accrued impairment, restructuring charges and other items
Beginning balance	$ 1.9
Accruals	2.6
Payments	(3.3)
Ending balance	1.2
Severance [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	0.1
Accruals	2.6
Payments	(2.6)
Ending balance	0.1
Other [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	1.8
Accruals	0
Payments	(0.7)
Ending balance	$ 1.1
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Period for Payment of Environmental Reserve	9 months
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Period for Payment of Environmental Reserve	12 months