Note 10. Warranties

Depending on the product, the Company provides warranties against materials and manufacturing defects generally ranging from one to five years. The warranty costs are estimated using a two-step approach. First, an engineering estimate is made for the cost of all claims that have been filed by customers. Second, based on historical claims experience, a cost is accrued for all products still within a warranty period for which no claims have been filed. The Company provides for the estimated cost of product warranties at the time revenue is recognized related to products covered by warranties and assesses the adequacy of the resulting reserves on a quarterly basis. The changes in the accruals for warranties for the three and six month periods ended June 30, 2011 and 2010 are as follows:


	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
				(in millions)
Beginning balance	$	12.7		$	19.6		$	13.2		$	19.6
Warranty costs incurred		(1.4	)		(1.3	)		(2.7	)		(2.2	)
Warranty originations and revisions		0.9			1.3			2.5			2.9
Warranty expirations		(0.2	)		(1.0	)		(1.0	)		(1.7	)

Ending balance	$	12.0		$	18.6		$	12.0		$	18.6