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5. Product Warranty Liability
 6 Months Ended
Jun. 30, 2012
Product Warranties Disclosures [Abstract]  
Product Warranty Liability
5.PRODUCT WARRANTY LIABILITY

We warrant certain equipment against defects in design, materials and workmanship, generally for a period of one year.  Upon delivery of that equipment, we establish, as part of Cost of goods sold, a provision for the expected costs of such warranty based on historical experience, specific warranty terms and customer feedback.  A review is performed on a quarterly basis to assess the adequacy of our warranty accrual.

Components of the warranty accrual, included in Other current liabilities and Other long-term liabilities in the Condensed Consolidated Balance Sheets, were as follows (in millions):

December 31, 2011
$
16.4

Provision for warranty
8.6

Actual warranty costs
(10.1
)
June 30, 2012
$
14.9