Acquisitions and Dispositions – Pro-Forma Adjustments Affecting Net Earnings (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2015 USD ($)
Business Combinations [Abstract]
Depreciation and amortization of purchased assets, pre-tax	$ 2.4
Acquisition-related expenses, pre-tax	23.3
Restructuring, impairment and other charges, pre-tax	3.0
Other pro forma adjustments, pre-tax	0.8
Income taxes	$ (0.9)