Commitments and Contingencies (Details 2) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Changes in the accrued product quality issue
Total accrued product quality issue as of December 31, 2010	$ 16.0
Product quality claims	(3.7)
Changes in estimates associated with pre-existing liabilities	(1.4)
Total accrued product quality issue as of June 30, 2011	$ 10.9