Property, Plant and Equipment - Components of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Property Plant And Equipment [Abstract]
Land	$ 114.3	$ 112.1
Buildings	1,226.1	1,214.8
Machinery and equipment	6,167.2	6,142.8
Property, plant and equipment, gross	7,507.6	7,469.7
Less: Accumulated depreciation	(6,003.6)	(5,954.2)
Total	$ 1,504.0	$ 1,515.5