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5. Product Warranty Liability (Tables)
3 Months Ended
Mar. 31, 2017
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, 2017
$
17.6

Provision for warranty
8.0

Actual warranty costs
(8.0
)
March 31, 2017
$
17.6