Accumulated Other Comprehensive Loss (Changes in Accumulated Other Comprehensive Loss by Component) (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended			9 Months Ended
	Jun. 30, 2013	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive loss, tax (benefit) expense		$ 0.4			$ 0.6
Net sales		598.7		626.7	1,807.8		1,750.5
Loss on early extinguishment of debt	(43.1)	(13.8)			(56.9)
Foreign Currency Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive loss, tax (benefit) expense		0			0
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive loss, tax (benefit) expense		1.0	[1]		2.6	[1]
Pension and Other Postretirement Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive loss, tax (benefit) expense		(0.6)	[2]		(2.0)	[2]
Reclassification out of Accumulated Other Comprehensive Income | Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net sales		2.8			3.9
Loss on early extinguishment of debt					$ 3.1

[1] Pre-tax amounts reclassified from AOCI in the three months ended September 30, 2013 are reported in Net sales ($2.8 million (gain)). Pre-tax amounts reclassified from AOCI in the nine months ended September 30, 2013 are reported in Net sales ($3.9 million (gain)) and loss on early extinguishment of debt ($3.1 million (gain)).

[2] Pre-tax amounts reclassified from AOCI represent amortization of net loss, which is included in the computation of net periodic benefit cost (see Note 14, Pension Benefits).