Impairments Restructuring Charges and Other Items (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Activities for accrued impairment, restructuring charges and other items
Beginning balance	$ 1.6
Accruals	3.4
Payments	(2.2)
Ending balance	2.8
Severance [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	0.1
Accruals	2.3
Payments	(1.4)
Ending balance	1.0
Other [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	1.5
Accruals	1.1
Payments	(0.8)
Ending balance	$ 1.8
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Period for Payment of Environmental Reserve	15 months
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Period for Payment of Environmental Reserve	21 months