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Segment Information - Net Revenues by Product Segment (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues $ 8,493 $ 9,735 $ 10,346
Automotive ("APG") [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues 1,554 1,678 1,420
Digital [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues 1,334 1,839 2,174
Analog MEMS And Microcontrollers ("AMM") [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues 3,200 3,377 3,154
Power Discrete Products ("PDP") [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues 1,015 1,240 1,319
Wireless [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues 1,345 1,552 2,219
All Other Segments [Member]
      
Revenues from External Customers and Long-Lived Assets [Line Items]      
Total consolidated net revenues $ 45 $ 49 $ 60