Income Tax Expense Allocated to Each Component of Other Comprehensive Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Other Comprehensive Income [Line Items]
Translation adjustments - Before Tax Amount	$ (9.0)	$ 7.1
Adjustment for net periodic pension and other postretirement benefits plan cost - Before Tax Amount	1.4	7.8
Change in fair value of derivatives - Before Tax Amount	0.1	0.1
Other comprehensive income (loss) - Before Tax Amount	(7.5)	15.0
Translation adjustments - Income Tax Expense
Adjustment for net periodic pension and other postretirement benefits plan cost - Income Tax Expense	0.5	8.7
Change in fair value of derivatives - Income Tax Expense	0.1
Other comprehensive income (loss) - Income Tax Expense	0.6	8.7
Translation adjustments - Net of Tax Amount	(9.0)	7.1
Adjustment for net periodic pension and other postretirement benefits plan cost	0.9	(0.9)
Change in fair value of derivatives - Net of Tax Amount		0.1
Other comprehensive income (loss) - Net of Tax Amount	$ (8.1)	$ 6.3