Components of Property and Equipment (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011 Year	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	1
Property and equipment maximum useful life	50
Property and equipment	$ 421.6	$ 363.0
Less accumulated depreciation	(213.3)	(193.7)
Property and equipment, net	208.3	169.3
Land, Buildings and Improvements
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	3
Property and equipment maximum useful life	50
Property and equipment	97.5	84.8
Machinery
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	1
Property and equipment maximum useful life	20
Property and equipment	96.7	87.5
Tooling
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	2
Property and equipment maximum useful life	10
Property and equipment	52.5	41.7
Computer Equipment and Software
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	2
Property and equipment maximum useful life	20
Property and equipment	158.3	133.4
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment minimum useful life	2
Property and equipment maximum useful life	20
Property and equipment	$ 16.6	$ 15.6

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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Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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