Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Property, plant and equipment
Property, plant and equipment, gross	$ 4,987.6		$ 4,987.6		$ 4,929.2
Accumulated depreciation	(2,604.3)		(2,604.3)		(2,556.9)
Net property, plant and equipment	2,383.3		2,383.3		2,372.3
Depreciation expense	59.1	64.3	118.2	128.1
Land
Property, plant and equipment
Property, plant and equipment, gross	68.0		68.0		67.6
Buildings
Property, plant and equipment
Property, plant and equipment, gross	982.0		982.0		980.9
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, gross	3,664.4		3,664.4		3,647.8
Construction-in-progress
Property, plant and equipment
Property, plant and equipment, gross	$ 273.2		$ 273.2		$ 232.9