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Accounting Policies - Schedule of Property, Plant and Equipment Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2012
Buildings [Member]
Estimated useful lives of Property, Plant and Equipment, Average	33 years
Facilities & leasehold improvements [Member] | Minimum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	5 years
Facilities & leasehold improvements [Member] | Maximum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	10 years
Machinery and equipment [Member] | Minimum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	3 years
Machinery and equipment [Member] | Maximum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	10 years
Computer and R&D equipment [Member] | Minimum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	3 years
Computer and R&D equipment [Member] | Maximum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	6 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	2 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Estimated useful lives of Property, Plant and Equipment, Average	5 years

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration