Product Warranty (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 66.8	$ 61.7
Acquisition	4.5	3.0
Provisions	47.5	39.3
Payments	(43.5)	(35.5)
Translation adjustment	(2.6)	(1.7)
Ending balance	72.7	66.8
Product Warranty Accrual, Balance Sheet Classification [Abstract]
Accounts payable and accrued expenses	38.6	37.0
Other non-current liabilities	34.1	29.8
Total product warranty liability	$ 72.7	$ 66.8