Components of Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 0.2		$ 2.5
Other comprehensive income before reclassifications			4.7		(14.6)
Amounts reclassified to consolidated statement of income	(0.1)	0	(0.4)	[1]	0.3	[1]
Tax benefit (expense)			0
Other comprehensive income (loss)	5.9	(8.7)	4.3		(14.3)
Ending balance	4.5	(11.8)	4.5		(11.8)
Foreign Currency Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			12.7		22.8
Other comprehensive income before reclassifications			4.5		(14.8)
Amounts reclassified to consolidated statement of income			0	[1]	0	[1]
Tax benefit (expense)			0
Other comprehensive income (loss)			4.5		(14.8)
Ending balance	17.2	8.0	17.2		8.0
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			(13.0)		(20.5)
Other comprehensive income before reclassifications			1.0		0
Amounts reclassified to consolidated statement of income			0	[1]	0.3	[1]
Tax benefit (expense)			(0.3)
Other comprehensive income (loss)			0.7		0.3
Ending balance	(12.3)	(20.2)	(12.3)		(20.2)
Derivative Agreements
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			0.5		0.2
Other comprehensive income before reclassifications			(0.8)		0.2
Amounts reclassified to consolidated statement of income			(0.4)	[1]	0	[1]
Tax benefit (expense)			0.3
Other comprehensive income (loss)			(0.9)		0.2
Ending balance	$ (0.4)	$ 0.4	$ (0.4)		$ 0.4

[1] Amounts classified to cost of sales and selling, general and administrative expenses.