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Warranties (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Changes in the accruals for warranties
Beginning balance	$ 12.5	$ 13.5
Warranty costs incurred	(1.5)	(2.4)
Warranty originations and revisions	2.6	3.8
Warranty expirations	(1.0)	(0.4)
Ending balance	$ 12.6	$ 14.5

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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