Depreciation Included in Property Plant and Equipment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Depreciation	$ 330.7	$ 295.9	$ 269.6
Cost of Sales
Property Plant And Equipment [Line Items]
Depreciation	300.9	268.9	248.3
Selling, General and Administrative Expenses
Property Plant And Equipment [Line Items]
Depreciation	13.9	12.5	8.6
Research, Development and Engineering Expenses, net
Property Plant And Equipment [Line Items]
Depreciation	$ 15.9	$ 14.5	$ 12.7