Impairments Restructuring Charges and Other Items (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Activities for accrued impairment, restructuring charges and other items
Beginning balance	$ 1.9	$ 3.0
Accruals	4.4	8.1
Payments	(4.7)	(9.2)
Ending balance	1.6	1.9
Severance [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	0.1	0.6
Accruals	3.8	8.0
Payments	(3.8)	(8.5)
Ending balance	0.1	0.1
Other [Member]
Activities for accrued impairment, restructuring charges and other items
Beginning balance	1.8	2.4
Accruals	0.6	0.1
Payments	(0.9)	(0.7)
Ending balance	$ 1.5	$ 1.8