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Segment Information - Net Revenues by Product Lines (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]      
Total consolidated net revenues $ 8,493 $ 9,735 $ 10,346
Automotive ("APG") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,554 1,678 1,420
Digital Convergence Group ("DCG") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 888 1,084 1,413
Imaging, Bi-CMOS ASIC and Silicon Photonics Group ("IBP") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 437 722 712
Other Digital [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 9 33 49
Digital [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,334 1,839 2,174
Analog, MEMS & Sensors ("AMS") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,320 1,335 1,106
Industrial & Power Conversion ("IPC") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 733 864 863
Microcontrollers, Memories & Secure MCUs ("MMS") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,147 1,175 1,181
Other AMM [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues    3 4
Analog MEMS And Microcontrollers ("AMM") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 3,200 3,377 3,154
Power Discrete Products ("PDP") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,015 1,240 1,319
Connectivity [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 120 233 286
Smartphone and Tablet Solutions ("STS") [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,102 1,202 1,893
Modem [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 129 115 35
Other Wireless [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues (6) 2 5
Wireless Segment (Wireless) [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues 1,345 1,552 2,219
All Other Segments [Member]
     
Segment Reporting Information [Line Items]      
Total consolidated net revenues $ 45 $ 49 $ 60