Restructuring Charges - Schedule of Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Lease And Exit Costs [Member]	Sep. 30, 2013 Two Thousand Twelve Restructuring [Member]	Sep. 30, 2013 Two Thousand Twelve Restructuring [Member]	Dec. 31, 2012 Two Thousand Twelve Restructuring [Member]	Sep. 30, 2013 Two Thousand Twelve Restructuring [Member] Employee Severance and other Personnel Benefits [Member]	Dec. 31, 2012 Two Thousand Twelve Restructuring [Member] Employee Severance and other Personnel Benefits [Member]		Sep. 30, 2013 Two Thousand Twelve Restructuring [Member] Other Restructuring [Member]		Dec. 31, 2012 Two Thousand Twelve Restructuring [Member] Other Restructuring [Member]	Sep. 30, 2013 Restructuring Charges [Member]	Sep. 30, 2013 Restructuring Charges [Member] Two Thousand Twelve Restructuring [Member]	Dec. 31, 2012 Restructuring Charges [Member] Two Thousand Twelve Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges prior to gain on sale of facility			$ 4.3									$ 1.7	[1]
Gain (Loss) on Disposition of Property Plant Equipment						(2.5)	(2.5)
Restructuring Reserve [Roll Forward]
Restructuring cost, beginning balance			19.2		0.3				18.0			0.9
(Income) expense, net	(1.5)	21.0	1.8	21.0	0		2.2	24.1	2.6	18.4	[2]	(0.8)	[1]	2.3	1.8	1.8	20.7
Restructuring reserve, translation adjustment			(0.2)		0				(0.2)			0
Cash utilized, net			(16.1)		(0.3)		(13.3)	(3.8)	(13.5)			(2.3)
Non utilized, net			0		0				0			0
Restructuring cost, ending balance	$ 7.2		$ 7.2		$ 0				$ 6.9	$ 18.0		$ 0.3		$ 0.9

[1] Included within the $(0.8) million of other is a $2.5 million gain on the July 2013 sale of the Company's manufacturing facility in France, which was recognized in the third quarter of 2013.

[2] Included within the $18.4 million of employee severance and other personnel benefits is a net pension curtailment gain of $1.5 million recognized in the year ended December 31, 2012.