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5. Product Warranty Liability (Tables)
9 Months Ended
Sep. 30, 2015
Product Warranties Disclosures [Abstract]  
Components of 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):

January 1, 2015
$
17.8

Provision for warranty
21.8

Actual warranty costs
(22.8
)
September 30, 2015
$
16.8