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Financial Instruments and Risk Management - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 1 Months Ended 3 Months Ended 12 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2010
Apr. 30, 2010
Dec. 31, 2010
Mar. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2012
Contractual customer relationships [Member]
Dec. 31, 2012
Wireless capitalized software [Member]
Dec. 31, 2012
Acquired technology [Member]
Sep. 30, 2012
Wireless [Member]
Dec. 31, 2012
Wireless [Member]
Dec. 31, 2012
Wireless [Member]
Contractual customer relationships [Member]
Dec. 31, 2012
Wireless [Member]
Wireless capitalized software [Member]
Dec. 31, 2012
Wireless [Member]
Acquired technology [Member]
Dec. 31, 2012
Carrollton [Member]
Dec. 31, 2010
Micron Technology Inc. [Member]
Dec. 31, 2010
Micron Technology Inc. [Member]
Derivative [Line Items]                                      
Notional amount of Derivative Instruments Not Designated as a Hedge $ 874   $ 874   $ 817 $ 517 $ 874                        
Maximum percentage for Research and development and Corporate costs of the total forecasted transactions         80.00%                            
Maximum percentage for manufacturing costs of forecasted transactions         70.00%                            
Realized gain (loss) on Reduction in Cost of Sale         39 65 37                        
Realized gain (loss) on Reduction in Operating Expenses         32 52 42                        
Notional amount for hedge 1,850   1,850   1,552 1,759 1,850                        
Deferred Gain on Derivative Instrument, net of tax         30 (13) (2)                        
Deferred Gain on Derivative Instrument, Tax         3 9                          
Period of accumulated other comprehensive income (loss)           12 months                          
Amount Reclassified as Other Income and Expenses, net         0 0                          
Notional share amount of price risk derivatives 20,056,131 5,000,000 10,000,000                                
Gain (loss) on financial instruments       6                              
Shares Sold 20,000,000   10,000,000                                
Proceeds from sale of derivatives                                   16 5
Gain (loss) on the sale of derivatives                                     4
Contingency premium paid on zero-cost collars             9                        
Notional amount to hedge forecasted sales, shares                                     40,000,000
Cumulative change in fair value of the collars             27                        
Disposal of financial instrument           6                          
Maximum outstanding amount per instrument with each Bank , as percentage of total               20.00%                      
Maximum outstanding percentage of counterparty risk               15.00%                      
Percentage of trade account receivable represented by one customer         7.10% 11.30%                          
Impairment charges         1,268 4 11         690 1,234       21    
Impairment on intangible assets         $ 312       $ 261 $ 45 $ 6   $ 312 $ 261 $ 45 $ 6