Restructuring - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 63.6	$ 81.1	$ 107.0
Restructuring, expected cost	35.0
Restructuring charges, including curtailment and settlement losses		88.8
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	55.4		86.8
Restructuring charges, including curtailment and settlement losses		68.4
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8.5		19.2
Restructuring charges, including curtailment and settlement losses		18.4
Other expense, net
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(0.3)		1.0
Restructuring charges, including curtailment and settlement losses		2.0
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	54.1	70.0	88.6
Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4.7	3.9	0.5
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0.1	1.7	0.5
Other related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 4.7	5.5	$ 17.4
Pension benefit plan curtailment charges
Restructuring Cost and Reserve [Line Items]
Curtailment gain (loss)		$ (7.7)