Restructuring - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 194.2	$ 88.0	$ 70.9
Carrying value in excess of related estimated fair values	8.7	4.7	1.3
Right-of-use asset, impairment	0.8
Restructuring, expected cost	55.0
Restructuring charges, including curtailment and settlement losses	183.6		72.6
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	173.8	63.7	59.2
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16.4	24.0	14.3
Other income and expense, net
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(6.6)	0.3	(0.9)
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	167.8	74.5	62.9
Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	9.5	4.7	1.3
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3.0	1.5	1.7
Pension benefit plan curtailment gain
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10.6
Pension benefit plan curtailment and settlement losses
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1.7
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 13.9	$ 7.3	$ 5.0