Components of Property, Plant and Equipment (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Property Plant And Equipment [Line Items]
Land	$ 94.6	$ 98.7
Buildings	1,159.6	1,167.0
Machinery and equipment	6,019.3	6,022.7
Property, plant and equipment, gross	7,273.5	7,288.4
Accumulated depreciation	(5,822.6)	(5,671.8)
Total	$ 1,450.9	$ 1,616.6