Changes in Accumulated Other Comprehensive Loss by Component (Parenthetical) (Detail) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Unrealized net gain on cash flow derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Realized gains on derivatives reclassified to cost of products sold, tax provision		$ 0.2	$ 0.0
Pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification, before income tax benefit		4.8	3.9
Income tax benefit		(1.2)	(1.0)
Reclassification net of income tax benefit	[1]	3.6	2.9
Actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification, before income tax benefit	[2]	4.9	4.0
Prior year service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification, before income tax benefit	[2]	$ (0.1)	$ (0.1)

[1] Amortization of pension items:

[2] These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. See Note 10 - Pensions for additional details