Product Warranty Liability Activities (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Guarantor Obligations [Line Items]
Beginning balance	$ 70.4	$ 73.7	$ 78.3	$ 83.6
Payments	(7.2)	(7.7)	(26.4)	(24.0)
Increase in liability (warranty issued during period)	3.9	5.0	12.3	16.2
Net adjustments to liability	3.0	10.8	5.6	5.8
Accretion (for Predecessor liabilities)		0.1	0.3	0.3
Ending balance	$ 70.1	$ 81.9	$ 70.1	$ 81.9