Other Income Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Income and Expenses [Abstract]
Loss from disposal activities									$ 39.7	$ 21.5	$ 0
Restructuring expense									27.4	0	0
Retirement related obligations									17.3	0	0
Patent infringement settlement, net of legal costs incurred									0	(29.1)	0
Environmental litigation settlement									0	0	28.0
BERU - Eichenauer equity investment gain									0	0	8.0
Other									0.3		2.4
Other Operating Income										(0.5)
Other (income) expense	(17.3)	(29.7)	(36.6)	(1.1)	(21.8)	(0.6)	28.9	1.6	(84.7)	8.1	(22.4)
Employee termination benefits									9.0
Loss on cancellation of contracts									6.3
Other restructuring charges									12.1
Recognized net (gain) loss due to settlements									5.7
Executive retirement incremental compensation expense									11.6
Patent infringement settlement - Cash received									32.5
Patent infringement settlement - Expense									$ 3.4