Cost and Accumulated Depreciation of Property Plant and Equipment (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Land and land improvements	$ 23.6us-gaap_LandAndLandImprovements	$ 20.3us-gaap_LandAndLandImprovements
Buildings and building improvements	281.6us-gaap_BuildingsAndImprovementsGross	271.4us-gaap_BuildingsAndImprovementsGross
Machinery and equipment	576.2us-gaap_MachineryAndEquipmentGross	567.7us-gaap_MachineryAndEquipmentGross
Software	117.0	112.9
Special tools	143.6us-gaap_PropertyPlantAndEquipmentOther	143.4us-gaap_PropertyPlantAndEquipmentOther
Construction in progress	39.9us-gaap_ConstructionInProgressGross	48.6us-gaap_ConstructionInProgressGross
Total property, plant and equipment	1,181.9us-gaap_PropertyPlantAndEquipmentGross	1,164.3us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(667.3)	(600.9)
Property, plant and equipment, net	$ 514.6us-gaap_PropertyPlantAndEquipmentNet	$ 563.4us-gaap_PropertyPlantAndEquipmentNet	$ 596.2us-gaap_PropertyPlantAndEquipmentNet

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

+ Details

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

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-Paragraph 4

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-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765

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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 1

-Subparagraph (a)

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

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Period Type:	instant

- Definition

Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale.

+ References

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-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

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- Definition

Amount before accumulated depreciation, depletion and amortization of 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, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

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