Summary of Significant Accounting Policies (Details 2)	12 Months Ended
	Dec. 31, 2011 M
Summary of Significant Accounting Policies
Inventory adjustment, usage period (in months)	1
Building
Property, plant and equipment
Estimated useful life, minimum (in years)	25
Estimated useful life, maximum (in years)	40
Machinery and equipment
Property, plant and equipment
Estimated useful life, minimum (in years)	3
Estimated useful life, maximum (in years)	10
Computer equipment and software
Property, plant and equipment
Estimated useful life, minimum (in years)	3
Estimated useful life, maximum (in years)	5
Furniture and fixtures
Property, plant and equipment
Estimated useful life, minimum (in years)	3
Estimated useful life, maximum (in years)	10
Leasehold improvements
Property, plant and equipment
Estimated useful life, maximum (in years)	15
Purchased software
Property, plant and equipment
Estimated useful life (in years)	3