Pro Forma Adjustments Affecting Net Earnings (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
Business Acquisition [Line Items]
Depreciation and amortization of purchased assets, pre-tax	$ 1.8	$ (2.6)	$ 1.6	$ (4.5)
Acquisition-related expenses, pre-tax	0.3	0.1	18.9	(16.5)
Restructuring, impairment and other charges, pre-tax	5.0	(5.0)	22.1	(21.2)
Inventory fair value adjustments, pre-tax	2.2		14.3	(14.3)
Other pro forma adjustments, pre-tax	6.1	(8.5)	(4.5)	1.4
Income taxes	$ (3.5)	$ (0.5)	$ (13.7)	$ 17.9