Guarantees and Indemnifications (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2004	Dec. 31, 2002
Product Liability Contingency [Line Items]
Indemnity				$ 4.0	$ 15.0
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	30.3	29.5	32.9
Accrued to expense	4.5	13.7	11.2
Product Warranty Accrual, Preexisting, Increase (Decrease)	(1.8)
Payments made	(11.6)	(12.9)	(14.6)
Ending Balance	21.4	30.3	29.5
Current portion of warranty reserves	(12.0)	(12.0)	(10.0)
Long-term portion of warranty reserves	9.4	18.3	19.5
Damages from Product Defects [Member]
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Accrued to expense	3.6	12.0	5.2
deductible [Member]
Product Liability Contingency [Line Items]
Indemnity				$ 0.3