Accumulated Other Comprehensive Loss (Changes in Accumulated Other Comprehensive Loss by Component) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss, Beginning balance	$ (289.4)			$ (186.0)
Other comprehensive (loss) income before reclassifications	84.0			(19.7)
(Gains) losses reclassified from accumulated other comprehensive loss (net of tax (benefit) expense)	(0.9)			(0.6)
Net current period other comprehensive (loss) income	83.1		84.3	(20.3)		107.2
Accumulated Other Comprehensive Loss, Ending balance	(206.3)			(206.3)
Foreign Currency Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss, Beginning balance	(179.8)			(71.1)
Other comprehensive (loss) income before reclassifications	85.9			(22.8)
Net current period other comprehensive (loss) income	85.9			(22.8)
Accumulated Other Comprehensive Loss, Ending balance	(93.9)			(93.9)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss, Beginning balance	6.4	[1]		4.0	[1]
Other comprehensive (loss) income before reclassifications	(1.9)	[1]		3.1	[1]
(Gains) losses reclassified from accumulated other comprehensive loss (net of tax (benefit) expense)	(1.8)	[1]		(4.4)	[1]
Net current period other comprehensive (loss) income	(3.7)	[1]		(1.3)	[1]
Accumulated Other Comprehensive Loss, Ending balance	2.7	[1]		2.7	[1]
Pension and Other Postretirement Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss, Beginning balance	(116.0)	[2]		(118.9)	[2]
(Gains) losses reclassified from accumulated other comprehensive loss (net of tax (benefit) expense)	0.9	[2]		3.8	[2]
Net current period other comprehensive (loss) income	0.9	[2]		3.8	[2]
Accumulated Other Comprehensive Loss, Ending balance	$ (115.1)	[2]		$ (115.1)	[2]

[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).