The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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- Definition

Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property, plant and equipment
Property, plant and equipment, gross	$ 4,867.0		$ 4,867.0		$ 4,665.1
Accumulated depreciation	(2,506.9)		(2,506.9)		(2,376.5)
Net property, plant and equipment	2,360.1		2,360.1		2,288.6
Depreciation expense	66.8	64.4	194.9	190.2
Land
Property, plant and equipment
Property, plant and equipment, gross	79.2		79.2		82.6
Buildings
Property, plant and equipment
Property, plant and equipment, gross	963.5		963.5		934.3
Machinery and equipment
Property, plant and equipment
Property, plant and equipment, gross	3,541.1		3,541.1		3,407.6
Construction-in-progress
Property, plant and equipment
Property, plant and equipment, gross	$ 283.2		$ 283.2		$ 240.6