Restructuring, Asset Impairments and Other, Net (Termination and Related Payments) (Details) (USD $)			9 Months Ended								21 Months Ended	9 Months Ended	21 Months Ended	33 Months Ended	9 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Restructuring Activities Related to the 2011 Global Workforce Reduction [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Activities Related To The 2011 Closure Of The Phoenix, Arizona Wafer Manufacturing Facility [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Activities Related To The 2011 Closure Of The Phoenix, Arizona Wafer Manufacturing Facility [Member] Estimated Costs To Exit [Member]	Sep. 30, 2011 Restructuring Activities Related To The 2011 Acquisition Of SANYO Semiconductor [Member]	Sep. 30, 2011 Restructuring Activities Related To The 2011 Acquisition Of SANYO Semiconductor [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Activities Related To The 2011 Acquisition Of SANYO Semiconductor [Member] Estimated Costs To Exit [Member]	Sep. 30, 2011 Restructuring Activities Related To 2010 Acquisition Of California Micro Devices Corporation ("CMD") [Member]	Sep. 30, 2011 Restructuring Activities Related To 2010 Acquisition Of California Micro Devices Corporation ("CMD") [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Activities Related To 2010 Acquisition Of California Micro Devices Corporation ("CMD") [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Restructuring Activities Related To 2010 Acquisition Of California Micro Devices Corporation ("CMD") [Member] Estimated Costs To Exit [Member]	Sep. 30, 2011 Restructuring Activities Related To 2010 Acquisition Of California Micro Devices Corporation ("CMD") [Member] Estimated Costs To Exit [Member]	Sep. 30, 2011 Restructuring Activities Related To 2009 Global Workforce Reduction [Member]	Sep. 30, 2011 Restructuring Activities Related To 2009 Global Workforce Reduction [Member] Estimated Employee Separation Costs [Member]	Dec. 31, 2010 Acquisition Of AMIS Holdings, Inc. [Member]	Sep. 30, 2011 Acquisition Of AMIS Holdings, Inc. [Member] Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Acquisition Of AMIS Holdings, Inc. [Member] Estimated Costs To Exit [Member]	Sep. 30, 2011 Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Estimated Employee Separation Costs [Member]	Sep. 30, 2011 Estimated Costs To Exit [Member]	Sep. 30, 2011 Estimated Costs To Exit [Member]
Balance at Beginning of Period	$ 12,800,000	$ 11,300,000	$ 0	$ 0	$ 0		$ 0	$ 0		$ 1,000,000		$ 100,000			$ 200,000	$ 10,000,000	$ 200,000	$ 9,800,000
Charges			2,300,000	2,500,000	1,600,000	10,000,000	8,500,000	1,500,000	3,600,000	0	3,500,000	0	100,000	13,000,000	0				2,400,000	13,300,000	1,300,000	3,100,000
Usage			(500,000)	(1,700,000)	(1,100,000)		(8,500,000)	(1,500,000)		(1,000,000)		(100,000)			(200,000)		0	(300,000)
Adjustments			0	0	0		0	0		0.0		0			0		0	0
Balance at End of Period	$ 12,800,000	$ 11,300,000	$ 1,800,000	$ 800,000	$ 500,000		$ 0	$ 0		$ 0	$ 0	$ 0	$ 0		$ 0	$ 10,000,000	$ 200,000	$ 9,500,000