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Product Warranty (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Roll forward of Product warranty accruals
Beginning Balance	$ 11.7	$ 8.0
Expense	(1.1)	9.0
Payments	(4.0)	(5.3)
Ending Balance	$ 6.6	$ 11.7

- 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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