Pro Forma Adjustments Affecting Net Earnings (Loss) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Business Acquisition [Line Items]
Depreciation and amortization of purchased assets, pre-tax	$ (0.2)	$ (1.9)
Acquisition-related expenses, pre-tax	18.6	(16.6)
Restructuring, impairment and other charges, pre-tax	17.1	(16.2)
Inventory fair value adjustments, pre-tax	12.1	(14.3)
Other pro forma adjustments, pre-tax	(10.6)	9.9
Income taxes	$ (10.2)	$ 18.4