Acquisitions and Dispositions - Pro Forma Adjustments Affecting Net Earnings (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Business Combinations [Abstract]
Amortization of purchased intangibles	$ 80.2	$ 84.8
Restructuring, impairment and other charges	103.0	170.2
Depreciation and amortization of purchased assets, pre-tax	5.5	(10.2)
Acquisition-related expenses, pre-tax	18.9	(8.9)
Restructuring, impairment and other charges, pre-tax	32.8	(31.8)
Inventory fair value adjustments, pre-tax	14.3	(14.3)
Interest expense-net, pre-tax	2.6	(19.1)
Other pro forma adjustments, pre-tax	(4.9)	9.5
Income taxes	$ (19.8)	$ 18.8